28 research outputs found

    Structural and Vibrational Properties of Corundum-type In2O3 Nanocrystals under Compression

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    This work reports the structural and vibrational properties of nanocrystals of corundum-type In2O3 (rh-In2O3) at high pressures by using angle-dispersive x-ray diffraction and Raman scattering measurements up to 30 GPa. The equation of state and the pressure dependence of the Raman-active modes of the corundum phase in nanocrystals are in good agreement with previous studies on bulk material and compare nicely with theoretical simulations on bulk rh-In2O3. Nanocrystalline rh-In2O3 showed stability under compression at least up to 20 GPa, unlike bulk rh-In2O3 which gradually transforms to the orthorhombic Pbca (Rh2O3-III-type) structure above 12-14 GPa. The different stability range found in nanocrystalline and bulk In2O3 is discussed

    Synergistic effect between hydrodynamic conditions during Ti anodization and acidic treatment on the photoelectric properties of TiO2 nanotubes

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    In the present work, the combined influence of controlled hydrodynamic conditions during Ti anodization and the acidic treatment with HClO4 on the photoelectric properties of mixed anatase/rutile TiO2 nanotubes has been studied. Anodized samples were analyzed by means of Field Emission Scanning Electronic Microscopy (FE-SEM), Confocal Raman Microscopy, electrochemical measurements (electrochemical impedance spectroscopy and Mott-Schottky analysis) and photoelectrochemical measurements. It has been observed that the use of hydrodynamic conditions increases the surface area of nanotubes, while acidic treatment enhances their conductivity. Besides, there is a clear synergistic effect between the hydrodynamic conditions and the acidic treatment, which results in higher photocurrent densities for the treated nanotubes formed under hydrodynamic conditions.Authors would like to express their gratitude for the financial support to the Ministerio of Economia y Competitividad (Project CTQ2013-42494-R).Sánchez Tovar, R.; Fernández Domene, RM.; Martinez Sanchez, A.; Blasco Tamarit, ME.; García-Antón, J. (2015). Synergistic effect between hydrodynamic conditions during Ti anodization and acidic treatment on the photoelectric properties of TiO2 nanotubes. Journal of Catalysis. 330:434-441. https://doi.org/10.1016/j.jcat.2015.08.002S43444133

    High-pressure lattice dynamical study of bulk and nanocrystalline In2O3

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    The effect of pressure on the vibrational properties of bulk and nanocrystallinepowders of cubic bixbyite-type In2O3 has been investigated at room temperature by means of Raman spectroscopy up to 31.6 and 30¿GPa, respectively. We have been able to follow the pressure dependence of up to sixteen and seven Raman modes in bulk and nanocrystalline cubic In2O3, respectively. The experimental frequencies and pressure coefficients of the Raman-active modes of bulk cubic In2O3 at ambient pressure are in good agreement with those predicted by our theoretical ab initio calculations. Furthermore, a comparison of our experimental data with our calculations for the Raman modes in rhombohedral corundum and orthorhombic Rh2O3-II structures and with already reported Raman modes of rhombohedral corundum-type In2O3 at room pressure indicate that Raman scattering measurements provide no experimental evidence of the cubic to rhombohedral or cubic to orthorhombic phase transitions either in bulk material or in nanocrystals up to 30¿GPa. © 2012 American Institute of PhysicsResearch financed by the Spanish MEC under Grant No. MAT2010-21270-C04-01/03/04 and from Vicerrectorado de Investigacion de la Universitat Politecnica de Valencia under Projects UPV2011-0914 PAID-05-11 and UPV2011-0966 PAID-06-11. CONACyT Mexico under the Project J-152153-F and the Marie-Curie Intra-European Fellowship have supported AHR. Supercomputer time has been provided by the Red Espanola de Supercomputacion (RES) and the MALTA cluster. B.G.-D. acknowledges J. Ruiz-Fuertes for enlightening suggestions. We also acknowledge the financial support from the MEC through the FPI program and Juan de la Cierva fellowship.Garcia Domene, B.; Ortiz, HM.; Gomis Hilario, O.; Sans, JA.; Manjón Herrera, FJ.; Muñoz, A.; Rodríguez-Hernández, P.... (2012). High-pressure lattice dynamical study of bulk and nanocrystalline In2O3. Journal of Applied Physics. 112:1235111-1235117. https://doi.org/10.1063/1.4769747S12351111235117112Granqvist, C. G. (1993). Transparent conductive electrodes for electrochromic devices: A review. Applied Physics A Solids and Surfaces, 57(1), 19-24. doi:10.1007/bf00331211Mizoguchi, H., & Woodward, P. M. (2004). Electronic Structure Studies of Main Group Oxides Possessing Edge-Sharing Octahedra:  Implications for the Design of Transparent Conducting Oxides. Chemistry of Materials, 16(25), 5233-5248. doi:10.1021/cm049249wKing, P. D. C., Veal, T. D., Fuchs, F., Wang, C. Y., Payne, D. J., Bourlange, A., … McConville, C. F. (2009). Band gap, electronic structure, and surface electron accumulation of cubic and rhombohedralIn2O3. Physical Review B, 79(20). doi:10.1103/physrevb.79.205211Hotovy, I., Pezoldt, J., Kadlecikova, M., Kups, T., Spiess, L., Breza, J., … Rehacek, V. (2010). Structural characterization of sputtered indium oxide films deposited at room temperature. Thin Solid Films, 518(16), 4508-4511. doi:10.1016/j.tsf.2009.12.018Erhart, P., Klein, A., Egdell, R. G., & Albe, K. (2007). Band structure of indium oxide: Indirect versus direct band gap. Physical Review B, 75(15). doi:10.1103/physrevb.75.153205Karazhanov, S. Z., Ravindran, P., Vajeeston, P., Ulyashin, A., Finstad, T. G., & Fjellvåg, H. (2007). Phase stability, electronic structure, and optical properties of indium oxide polytypes. Physical Review B, 76(7). doi:10.1103/physrevb.76.075129Breeze, A. J., Schlesinger, Z., Carter, S. A., & Brock, P. J. (2001). Charge transport inTiO2/MEH−PPVpolymer photovoltaics. Physical Review B, 64(12). doi:10.1103/physrevb.64.125205Bel Hadj Tahar, R., Ban, T., Ohya, Y., & Takahashi, Y. (1998). Tin doped indium oxide thin films: Electrical properties. Journal of Applied Physics, 83(5), 2631-2645. doi:10.1063/1.367025Xirouchaki, C., Kiriakidis, G., Pedersen, T. F., & Fritzsche, H. (1996). Photoreduction and oxidation of as‐deposited microcrystalline indium oxide. Journal of Applied Physics, 79(12), 9349-9352. doi:10.1063/1.362612Tang, C. W., & VanSlyke, S. A. (1987). Organic electroluminescent diodes. Applied Physics Letters, 51(12), 913-915. doi:10.1063/1.98799Burroughes, J. H., Bradley, D. D. C., Brown, A. R., Marks, R. N., Mackay, K., Friend, R. H., … Holmes, A. B. (1990). Light-emitting diodes based on conjugated polymers. Nature, 347(6293), 539-541. doi:10.1038/347539a0Lee, B. H., Iee Gon Kim, Sung Woo Cho, & Lee, S.-H. (1997). Effect of process parameters on the characteristics of indium tin oxide thin film for flat panel display application. Thin Solid Films, 302(1-2), 25-30. doi:10.1016/s0040-6090(96)09581-8Hsu, S.-F., Lee, C.-C., Hwang, S.-W., & Chen, C. H. (2005). Highly efficient top-emitting white organic electroluminescent devices. Applied Physics Letters, 86(25), 253508. doi:10.1063/1.1953883Favier, F. (2001). Hydrogen Sensors and Switches from Electrodeposited Palladium Mesowire Arrays. Science, 293(5538), 2227-2231. doi:10.1126/science.1063189Takada, T., Suzuki, K., & Nakane, M. (1993). Highly sensitive ozone sensor. Sensors and Actuators B: Chemical, 13(1-3), 404-407. doi:10.1016/0925-4005(93)85412-4Atashbar, M. ., Gong, B., Sun, H. ., Wlodarski, W., & Lamb, R. (1999). Investigation on ozone-sensitive In2O3 thin films. Thin Solid Films, 354(1-2), 222-226. doi:10.1016/s0040-6090(99)00405-8Pu, Z., Cao, M., Yang, J., Huang, K., & Hu, C. (2006). Controlled synthesis and growth mechanism of hematite nanorhombohedra, nanorods and nanocubes. Nanotechnology, 17(3), 799-804. doi:10.1088/0957-4484/17/3/031Alivisatos, A. P. (1996). Semiconductor Clusters, Nanocrystals, and Quantum Dots. Science, 271(5251), 933-937. doi:10.1126/science.271.5251.933El-Sayed, M. A. (2001). Some Interesting Properties of Metals Confined in Time and Nanometer Space of Different Shapes. Accounts of Chemical Research, 34(4), 257-264. doi:10.1021/ar960016nChen, S. G., Huang, Y. F., Xiao, H. N., Liao, H. W., Long, C. G., Ye, C., & Xia, Q. (2007). Sodium dodecyl benzene sulfonate (SDBS)-aid hydrothermal synthesis of indium–tin oxide (ITO) precursor intersecting-rods. Materials Letters, 61(8-9), 1937-1942. doi:10.1016/j.matlet.2006.07.107Singhal, A., Achary, S. N., Manjanna, J., Jayakumar, O. D., Kadam, R. M., & Tyagi, A. K. (2009). Colloidal Fe-Doped Indium Oxide Nanoparticles: Facile Synthesis, Structural, and Magnetic Properties. The Journal of Physical Chemistry C, 113(9), 3600-3606. doi:10.1021/jp8097846Qi, J., Liu, J. F., He, Y., Chen, W., & Wang, C. (2011). Compression behavior and phase transition of cubic In2O3 nanocrystals. Journal of Applied Physics, 109(6), 063520. doi:10.1063/1.3561363Marezio, M. (1966). Refinement of the crystal structure of In2O3 at two wavelengths. Acta Crystallographica, 20(6), 723-728. doi:10.1107/s0365110x66001749Prewitt, C. T., Shannon, R. D., Rogers, D. B., & Sleight, A. W. (1969). C rare earth oxide-corundum transition and crystal chemistry of oxides having the corundum structure. Inorganic Chemistry, 8(9), 1985-1993. doi:10.1021/ic50079a033Yusa, H., Tsuchiya, T., Sata, N., & Ohishi, Y. (2008). Rh2O3(II)-type structures inGa2O3andIn2O3under high pressure: Experiment and theory. Physical Review B, 77(6). doi:10.1103/physrevb.77.064107Yusa, H., Tsuchiya, T., Tsuchiya, J., Sata, N., & Ohishi, Y. (2008). α-Gd2S3-type structure inIn2O3: Experiments and theoretical confirmation of a high-pressure polymorph in sesquioxide. Physical Review B, 78(9). doi:10.1103/physrevb.78.092107Gurlo, A., Barsan, N., Weimar, U., Ivanovskaya, M., Taurino, A., & Siciliano, P. (2003). Polycrystalline Well-Shaped Blocks of Indium Oxide Obtained by the Sol−Gel Method and Their Gas-Sensing Properties. Chemistry of Materials, 15(23), 4377-4383. doi:10.1021/cm031114nYu, D., Yu, S.-H., Zhang, S., Zuo, J., Wang, D., & Qian, Y. T. (2003). Metastable Hexagonal In2O3 Nanofibers Templated from InOOH Nanofibers under Ambient Pressure. Advanced Functional Materials, 13(6), 497-501. doi:10.1002/adfm.200304303Epifani, M., Siciliano, P., Gurlo, A., Barsan, N., & Weimar, U. (2004). Ambient Pressure Synthesis of Corundum-Type In2O3. Journal of the American Chemical Society, 126(13), 4078-4079. doi:10.1021/ja0318075Yu, D., Wang, D., & Qian, Y. (2004). Synthesis of metastable hexagonal In2O3 nanocrystals by a precursor-dehydration route under ambient pressure. Journal of Solid State Chemistry, 177(4-5), 1230-1234. doi:10.1016/j.jssc.2003.10.030Sorescu, M., Diamandescu, L., Tarabasanu-Mihaila, D., & Teodorescu, V. S. (2004). Nanocrystalline rhombohedral In2O3synthesized by hydrothermal and postannealing pathways. Journal of Materials Science, 39(2), 675-677. doi:10.1023/b:jmsc.0000011529.01603.fcHao, Y., Meng, G., Ye, C., & Zhang, L. (2005). Controlled Synthesis of In2O3Octahedrons and Nanowires. Crystal Growth & Design, 5(4), 1617-1621. doi:10.1021/cg050103zLee, C. H., Kim, M., Kim, T., Kim, A., Paek, J., Lee, J. W., … Lee, K. (2006). Ambient Pressure Syntheses of Size-Controlled Corundum-type In2O3Nanocubes. Journal of the American Chemical Society, 128(29), 9326-9327. doi:10.1021/ja063227oChen, C., Chen, D., Jiao, X., & Wang, C. (2006). Ultrathin corundum-type In2O3 nanotubes derived from orthorhombic InOOH: synthesis and formation mechanism. Chemical Communications, (44), 4632. doi:10.1039/b610120hXu, J. Q., Chen, Y. P., Pan, Q. Y., Xiang, Q., Cheng, Z. X., & Dong, X. W. (2007). A new route for preparing corundum-type In2O3nanorods used as gas-sensing materials. Nanotechnology, 18(11), 115615. doi:10.1088/0957-4484/18/11/115615Zhuang, Z., Peng, Q., Liu, J., Wang, X., & Li, Y. (2007). Indium Hydroxides, Oxyhydroxides, and Oxides Nanocrystals Series. Inorganic Chemistry, 46(13), 5179-5187. doi:10.1021/ic061999fWang, C. Y., Dai, Y., Pezoldt, J., Lu, B., Kups, T., Cimalla, V., & Ambacher, O. (2008). Phase Stabilization and Phonon Properties of Single Crystalline Rhombohedral Indium Oxide. Crystal Growth & Design, 8(4), 1257-1260. doi:10.1021/cg700910nGurlo, A., Kroll, P., & Riedel, R. (2008). Metastability of Corundum-Type In2O3. Chemistry - A European Journal, 14(11), 3306-3310. doi:10.1002/chem.200701830Fan, Y., Li, Z., Wang, L., & Zhan, J. (2009). Catanionic-surfactant-controlled morphosynthesis and gas-sensing properties of corundum-type In2O3. Nanotechnology, 20(28), 285501. doi:10.1088/0957-4484/20/28/285501Chen, L.-Y., Wang, Z.-X., & Zhang, Z.-D. (2009). Corundum-type tubular and rod-like In2O3 nanocrystals: synthesis from designed InOOH and application in photocatalysis. New Journal of Chemistry, 33(5), 1109. doi:10.1039/b817588hGurlo, A., Ivanovskaya, M., Barsan, N., & Weimar, U. (2003). Corundum-type indium (III) oxide: formation under ambient conditions in Fe2O3–In2O3 system. Inorganic Chemistry Communications, 6(5), 569-572. doi:10.1016/s1387-7003(03)00047-9White, W. B., & Keramidas, V. G. (1972). Vibrational spectra of oxides with the C-type rare earth oxide structure. Spectrochimica Acta Part A: Molecular Spectroscopy, 28(3), 501-509. doi:10.1016/0584-8539(72)80237-xSobotta, H., Neumann, H., Kühn, G., & Riede, V. (1990). Infrared lattice vibrations of In2O3. Crystal Research and Technology, 25(1), 61-64. doi:10.1002/crat.2170250112Vigreux, C., Binet, L., Gourier, D., & Piriou, B. (2001). Formation by Laser Impact of Conducting β-Ga2O3–In2O3 Solid Solutions with Composition Gradients. Journal of Solid State Chemistry, 157(1), 94-101. doi:10.1006/jssc.2000.9043Korotcenkov, G., Brinzari, V., Ivanov, M., Cerneavschi, A., Rodriguez, J., Cirera, A., … Morante, J. (2005). Structural stability of indium oxide films deposited by spray pyrolysis during thermal annealing. Thin Solid Films, 479(1-2), 38-51. doi:10.1016/j.tsf.2004.11.107Matei Ghimbeu, C., Schoonman, J., & Lumbreras, M. (2008). Porous indium oxide thin films deposited by electrostatic spray deposition technique. Ceramics International, 34(1), 95-100. doi:10.1016/j.ceramint.2006.08.011Wang, C. Y., Cimalla, V., Romanus, H., Kups, T., Ecke, G., Stauden, T., … Ambacher, O. (2006). Phase selective growth and properties of rhombohedral and cubic indium oxide. Applied Physics Letters, 89(1), 011904. doi:10.1063/1.2219125Zhang, Y., Li, J., Li, Q., Zhu, L., Liu, X., Zhong, X., … Cao, X. (2007). Preparation of In2O3 ceramic nanofibers by electrospinning and their optical properties. Scripta Materialia, 56(5), 409-412. doi:10.1016/j.scriptamat.2006.10.032Berengue, O. M., Rodrigues, A. D., Dalmaschio, C. J., Lanfredi, A. J. C., Leite, E. R., & Chiquito, A. J. (2010). Structural characterization of indium oxide nanostructures: a Raman analysis. Journal of Physics D: Applied Physics, 43(4), 045401. doi:10.1088/0022-3727/43/4/045401Hoekstra, H. R. (1966). Phase Relationships in the Rare Earth Sesquioxides at High Pressure. Inorganic Chemistry, 5(5), 754-757. doi:10.1021/ic50039a013Shannon, R. D. (1966). New high pressure phases having the corundum structure. Solid State Communications, 4(12), 629-630. doi:10.1016/0038-1098(66)90058-5Atou, T., Kusaba, K., Fukuoka, K., Kikuchi, M., & Syono, Y. (1990). Shock-induced phase transition of M2O3 (M = Sc, Y, Sm, Gd, and In)-type compounds. Journal of Solid State Chemistry, 89(2), 378-384. doi:10.1016/0022-4596(90)90280-bLiu, D., Lei, W. W., Zou, B., Yu, S. D., Hao, J., Wang, K., … Zou, G. T. (2008). High-pressure x-ray diffraction and Raman spectra study of indium oxide. Journal of Applied Physics, 104(8), 083506. doi:10.1063/1.2999369Tao, X., Sun, L., Li, Z., & Zhao, Y. (2009). Side-by-Side In(OH)3 and In2O3 Nanotubes: Synthesis and Optical Properties. Nanoscale Research Letters, 5(2), 383-388. doi:10.1007/s11671-009-9493-5Syassen, K. (2008). Ruby under pressure. High Pressure Research, 28(2), 75-126. doi:10.1080/08957950802235640Hohenberg, P., & Kohn, W. (1964). Inhomogeneous Electron Gas. Physical Review, 136(3B), B864-B871. doi:10.1103/physrev.136.b864Kresse, G., & Furthmüller, J. (1996). Efficiency of ab-initio total energy calculations for metals and semiconductors using a plane-wave basis set. Computational Materials Science, 6(1), 15-50. doi:10.1016/0927-0256(96)00008-0Kresse, G., & Furthmüller, J. (1996). Efficient iterative schemes forab initiototal-energy calculations using a plane-wave basis set. Physical Review B, 54(16), 11169-11186. doi:10.1103/physrevb.54.11169Kresse, G., & Hafner, J. (1993). Ab initiomolecular dynamics for liquid metals. Physical Review B, 47(1), 558-561. doi:10.1103/physrevb.47.558Kresse, G., & Hafner, J. (1994). Ab initiomolecular-dynamics simulation of the liquid-metal–amorphous-semiconductor transition in germanium. Physical Review B, 49(20), 14251-14269. doi:10.1103/physrevb.49.14251Blöchl, P. E. (1994). Projector augmented-wave method. Physical Review B, 50(24), 17953-17979. doi:10.1103/physrevb.50.17953Kresse, G., & Joubert, D. (1999). From ultrasoft pseudopotentials to the projector augmented-wave method. Physical Review B, 59(3), 1758-1775. doi:10.1103/physrevb.59.1758Perdew, J. P., Ruzsinszky, A., Csonka, G. I., Vydrov, O. A., Scuseria, G. E., Constantin, L. A., … Burke, K. (2008). Restoring the Density-Gradient Expansion for Exchange in Solids and Surfaces. Physical Review Letters, 100(13). doi:10.1103/physrevlett.100.136406Mujica, A., Rubio, A., Muñoz, A., & Needs, R. J. (2003). High-pressure phases of group-IV, III–V, and II–VI compounds. Reviews of Modern Physics, 75(3), 863-912. doi:10.1103/revmodphys.75.863Parlinski, K., Li, Z. Q., & Kawazoe, Y. (1997). First-Principles Determination of the Soft Mode in CubicZrO2. Physical Review Letters, 78(21), 4063-4066. doi:10.1103/physrevlett.78.4063Arora, A. K., Rajalakshmi, M., Ravindran, T. R., & Sivasubramanian, V. (2007). Raman spectroscopy of optical phonon confinement in nanostructured materials. Journal of Raman Spectroscopy, 38(6), 604-617. doi:10.1002/jrs.1684Manjón, F. J., López-Solano, J., Ray, S., Gomis, O., Santamaría-Pérez, D., Mollar, M., … Muñoz, A. (2010). High-pressure structural and lattice dynamical study ofHgWO4. Physical Review B, 82(3). doi:10.1103/physrevb.82.035212Machon, D., McMillan, P. F., Xu, B., & Dong, J. (2006). High-pressure study of theβ-to-αtransition inGa2O3. Physical Review B, 73(9). doi:10.1103/physrevb.73.094125Guo, Q., Zhao, Y., Jiang, C., Mao, W. L., & Wang, Z. (2008). Phase transformation in Sm2O3 at high pressure: In situ synchrotron X-ray diffraction study and ab initio DFT calculation. Solid State Communications, 145(5-6), 250-254. doi:10.1016/j.ssc.2007.11.019Meyer, C., Sanchez, J. P., Thomasson, J., & Itié, J. P. (1995). Mössbauer and energy-dispersive x-ray-diffraction studies of the pressure-induced crystallographic phase transition inC-typeYb2O3. Physical Review B, 51(18), 12187-12193. doi:10.1103/physrevb.51.1218

    Pbca-Type In2O3: the high-pressure post-corundum phase at room temperature

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    This document is the Accepted Manuscript version of a Published Work that appeared in final form in Journal of Physical Chemistry C, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see http://dx.doi.org/10.1021/jp5061599High-pressure powder X-ray diffraction and Raman scattering measurements in cubic bixbyite-type indium oxide (c-In2O3) have been performed at room temperature. On increasing pressure c-In2O3 undergoes a transition to the Rh2O3-II structure but on decreasing pressure Rh2O3-II-type In2O3 undergoes a transition to a previously unknown phase with Pbca space group which is isostructural to Rh2O3-III. On further decrease of pressure, we observed a phase transition to the metastable corundum-type In2O3 near room conditions. Recompression of the metastable corundum-type In2O3 at room temperature leads to a transition to the Rh2O3-III phase, thus showing that the Rh2O3-III phase is the post-corundum phase at room temperature. Our results are supported by theoretical ab initio calculations. Furthermore, they show that the Rh2O3-III phase could be present in other sesquioxides, thus prompting to a revision of the pressure-temperature phase diagrams of sesquioxidesFinancial support by the Spanish MEC under Grant No. MAT2010-21270-C04-01/03/04, MAT2013-46649-C4-1/2/3-P, by MALTA Consolider Ingenio 2010 project (CSD2007-00045) and by Generalitat Valenciana (GVA-ACOMP-2013-012). Red Espanola de Supercomputacion (RES) and ALBA Synchrotron Light Source are also acknowledged. B.G.-D. and J.A.S. acknowledge financial support through the FPI program and Juan de la Cierva fellowship, respectively. We also thank J. L. Jorda for fruitful discussions. A.L.J.P. acknowledges financial support through Brazilian CNPq. A.S. expresses thanks to FEDER Grant UNLV10-3E-1253 for financial support.García-Domene, B.; Sans Tresserras, JÁ.; Gomis, O.; Manjón Herrera, FJ.; Ortiz, HM.; Errandonea, D.; Santamaría Pérez, D.... (2014). Pbca-Type In2O3: the high-pressure post-corundum phase at room temperature. Journal of Physical Chemistry C. 118(35):20545-20552. https://doi.org/10.1021/jp5061599S20545205521183

    Public Versus Private: Does It Matter for Water Conservation? Insights from California

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    This article asks three connected questions: First, does the public view private and public utilities differently, and if so, does this affect attitudes to conservation? Second, do public and private utilities differ in their approaches to conservation? Finally, do differences in the approaches of the utilities, if any, relate to differences in public attitudes? We survey public attitudes in California toward (hypothetical but plausible) voluntary and mandated water conservation, as well as to price increases, during a recent period of shortage. We do this by interviewing households in three pairs of adjacent public and private utilities. We also survey managers of public and private urban water utilities to see if they differ in their approaches to conservation and to their customers. On the user side we do not find pronounced differences, though a minority of customers in all private companies would be more willing to conserve or pay higher prices under a public operator. No respondent in public utility said the reverse. Negative attitudes toward private operators were most pronounced in the pair marked by a controversial recent privatization and a price hike. Nonetheless, we find that California’s history of recurrent droughts and the visible role of the state in water supply and drought management undermine the distinction between public and private. Private utilities themselves work to underplay the distinction by stressing the collective ownership of the water source and the collective value of conservation. Overall, California’s public utilities appear more proactive and target-oriented in asking their customers to conserve than their private counterparts and the state continues to be important in legitimating and guiding conservation behavior, whether the utility is in public hands or private

    The reference site collaborative network of the european innovation partnership on active and healthy ageing

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    Seventy four Reference Sites of the European Innovation Partnership on Active and Healthy Ageing (EIP on AHA) have been recognised by the European Commission in 2016 for their commitment to excellence in investing and scaling up innovative solutions for active and healthy ageing. The Reference Site Collaborative Network (RSCN) brings together the EIP on AHA Reference Sites awarded by the European Commission, and Candidate Reference Sites into a single forum. The overarching goals are to promote cooperation, share and transfer good practice and solutions in the development and scaling up of health and care strategies, policies and service delivery models, while at the same time supporting the action groups in their work. The RSCN aspires to be recognized by the EU Commission as the principal forum and authority representing all EIP on AHA Reference Sites. The RSCN will contribute to achieve the goals of the EIP on AHA by improving health and care outcomes for citizens across Europe, and the development of sustainable economic growth and the creation of jobs

    Evaluación del impacto de un plan multisectorial de promoción de la salud y el bienestar social en Andalucía

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    Objective: To evaluate the impact of the Plan for the promotion of personal autonomy and prevention of disability in Andalusia (2016-2020) in 13 public administrations during the first year of its implementation; and to analyse the usability and feasibility of the impact assessment ladder used. Method: The Plan addresses the promotion of personal autonomy and the prevention of disabilities and dependencies through a multisectoral approach. It is structured in strands or lines of work, objectives and actions that have been assessed through the Adoption Impact Ladder (AIL). The analysis of the face validity, feasibility and inter-rater reliability of the impact assessment ladder was carried out in 30 actions of the Plan that were rated by 20 experts from the 13 ministries and public agencies involved in the Plan, and an external rater. Results: 176 actions and programmes were launched in 2017. Of these, 67.2% were implemented during the first year. Only one of the 16 objectives had no action initiated during the first year. Moreover, 7 out of 15 objectives implemented were fully multisectoral involving more than three Regional Ministries. The face validity, feasibility and inter-rater reliability of the AIL were good (K: 0.72). Conclusions: This Plan has provided a novel framework to coordinate a broad range of proposed policies and actions within the public administration of Andalusia. For the first time, a multisectoral impact analysis has been conducted providing an effective guide for monitoring, planning and setting public priorities in health, social services, ageing and disabilities. (C) 2019 SESPAS. Published by Elsevier Espana, S.L.UObjetivo: Evaluar el impacto del Plan de Promoción de la Autonomía Personal y Prevención de la Dependencia de Andalucía (2016-2020) en 13 organismos públicos participantes tras su primer ano, ˜ y analizar la usabilidad y la fiabilidad de la escala de evaluación del impacto que se ha empleado. Método: El Plan aborda la promoción de la autonomía personal y la prevención de la discapacidad y la dependencia con un enfoque multisectorial. Se estructura en líneas, objetivos y actuaciones que han sido evaluadas mediante la escala Adoption Impact Ladder (AIL). El análisis de la validez simple, la viabilidad y la fiabilidad de la escala se ha realizado en 30 actuaciones evaluadas por 20 expertos de la Administración pública y un evaluador externo independiente. Resultados: En 2017 se pusieron en marcha 176 actuaciones y programas del Plan. Se han implementado el 67,2% de las actuaciones propuestas y solo uno de los 16 objetivos no se ha asociado a actuaciones ejecutadas en el primer ano. ˜ Siete de los 15 objetivos ejecutados fueron enteramente multisectoriales, involucrando a tres o más consejerías. La validez simple, la viabilidad y la fiabilidad interexaminadores de la escala AIL fueron buenas (: 0,72). Conclusiones: El Plan ha proporcionado un marco novedoso para coordinar un amplio rango de políticas y actuaciones en la Administración pública de Andalucía. Por primera vez se presenta un análisis del impacto multisectorial que proporciona una guía efectiva para el seguimiento, la planificación y el establecimiento de prioridades públicas en salud, servicios sociales y atención a personas mayores y personas con discapacidad. © 2019 SESPAS. Publicado por Elsevier Espana, ˜ S.L.
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