Microwave assisted facile synthesis of 3D flower-like ZnO nanostructures for enhanced photocatalytic degradation/removal of Eosin Y from water

Three-dimensional ZnO nanoflower has been synthesized via microwave irradiation technique using glycine as complexing/capping agent for the first time. TEM, SAED, XRD, FTIR, UV and PL spectra have been recorded to characterize the synthesized ZnO nanostructures. The TEM image indicates the formation of 3D flower-like ZnO nanostructures having diameter ~0.74-1.60 μm. The spacing between adjacent lattice fringes obtained from the HRTEM image is 0.145 nm which indicated the presence of (103) lattice plane of ZnO. The synthesized ZnO nanoflower show excellent luminescence properties. The photocatalytic properties of synthesized ZnO nanoflower is depicted by the degradation of Eosin Y dye under solar irradiation. It is found that 98.9% of Eosin Y dye is degraded within 50 min under solar irradiation. Henceforth, ZnO nanoflower acts as an effective photocatalyst for the degradation of Eosin Y dye

Characterization of liquid products obtained from catalytic co-cracking of polypropylene waste and residual fuel oil

The characterization of the liquid yield resulting from the co-cracking of Polypropylene extrusion grade and Residual fuel oil was carried out using analysis techniques like Gel Permeation chromatography, Ultimate, Calorimetry, and Fourier-transform infrared spectroscopy analysis technique. The resulting product of liquid yield from the co-cracking of the two feedstocks in presence of catalyst Zeolite Socony Mobil–5 was observed to have high calorific values of 44.084 MJ/Kg comparable values to that of the commercial diesel and therefore, has the potential to be used as source of renewable fuel energy. The addition of catalyst and temperature has been found to have positive synergistic effect on the heating value of the liquid product. The Fourier-transform infrared spectroscopy spectrum obtained from the co-cracking of Residual fuel oil and Polypropylene extrusion grade both in the presence and absence of catalyst was observed to be a mixed spectrum of their individual component and addition of catalyst had an insignificant effect on the properties of the resulting liquid except in the calorific values which were increased. The spectrum shows that the liquid product was dominated by the presence of alkanes and alkenes compounds

Microwave assisted facile synthesis of 3D flower-like ZnO nanostructures for enhanced photocatalytic degradation/removal of Eosin Y from water

237-240Three-dimensional ZnO nanoflower has been synthesized via microwave irradiation technique using glycine as complexing/capping agent for the first time. TEM, SAED, XRD, FTIR, UV and PL spectra have been recorded to characterize the synthesized ZnO nanostructures. The TEM image indicates the formation of 3D flower-like ZnO nanostructures having diameter ~0.74-1.60 μm. The spacing between adjacent lattice fringes obtained from the HRTEM image is 0.145 nm which indicated the presence of (103) lattice plane of ZnO. The synthesized ZnO nanoflower show excellent luminescence properties. The photocatalytic properties of synthesized ZnO nanoflower is depicted by the degradation of Eosin Y dye under solar irradiation. It is found that 98.9% of Eosin Y dye is degraded within 50 min under solar irradiation. Henceforth, ZnO nanoflower acts as an effective photocatalyst for the degradation of Eosin Y dye

Characterization of Liquid Products Obtained from Catalytic Co-Cracking of Polypropylene Waste and Residual Fuel Oil

398-403The characterization of the liquid produced from the co-cracking of Polypropylene extrusion grade (PPX) and Residual fuel oil (RFO) was carried out using analysis techniques like Gel Permeation chromatography (GPC), Ultimate analysis, Calorimetry analysis, Fourier-transform infrared spectroscopy (FTIR) analysis and Nuclear magnetic resonance (NMR) analysis technique. The resulting liquid from the co-cracking of the two feedstocks in presence of catalyst Zeolite Socony Mobil–5 (ZSM-5) was observed to have high calorific values of 44.084 MJ/Kg comparable to that of the commercial diesel and therefore has the potential to be used as source of renewable fuel. The temperature and catalyst have been found to have positive synergistic effect on the heating value of the liquid product. GPC analysis has revealed that, the liquid obtained from RFO is quite complex, but the complexity is reduced by co-cracking with PPX as suggested by the reduction in the polydispersity index, while the NMR analysis shows that the liquid obtained from the co-cracking was more of aliphatic in nature. The FTIR spectrum obtained from the co-cracking of RFO and PPX both in the presence and absence of catalyst was observed to be a mixed spectrum of their individual component and addition of catalyst had an insignificant effect on the properties of the resulting liquid except in the calorific values which were increased. The spectrum shows that the liquid product was dominated by the presence of alkanes and alkenes

Application of Ag Nanoparticle Loaded Bio-based Activated Carbon Composites for Sequestration of Naproxen from Water

746-749In the present investigation we described a facile method to synthesize nano-silver supported activated carbon from renewable bio-resource and its eco-friendly promising role to purify pharmaceutical contaminated wastewaters. The adsorption characteristics of Naproxen (NAP) on Ag supported activated carbon (AAC) have been studied under varied environments. The developed adsorbent, AAC have been characterized by UV-Visible, FT-IR, SEM-EDXA, XRD, TEM and SAED. UV-Vis and TEM confirmed production of Ag NPs (average size of 15 ± 3 nm) on activated carbon surface. Further, XRD analysis authenticates the presence of pure face centered cubic (fcc) structure of silver nanoparticles formed on activated carbon surface. Various operational parameters, such as pH, adsorbent dose and contact time were optimized for the removal of NAP from water phase. The pseudo-second-order kinetic model was found to follow the adsorption phenomenon (with good correlation coefficient). The Langmuir isotherm well describes the experimental data and maximum monolayer adsorption capacity was 200 mg/g for AAC. The pH and optimal temperature for adsorption process are found to be 4.0 and 303 K, respectively. The rate of adsorption is remarkably fast at the beginning and achieves equilibrium in 120 min. The obtained results showed that AAC was a better substitute as composite materials for remediation of wastewater

Green synthesis of silver nanoparticles using Coccinia grandis fruit extract and its application toward the reduction of toxic nitro compounds

Silver nanoparticles have been synthesized using Coccinia grandis fruit extract without using any surfactant or external energy. The phytochemical present in the fruit acts as a reducing agent and reduced the metal ions (Ag+) into metallic form (Ag0) and help in the formation of silver nanoparticles. For further confirmation, synthesized silver nanoparticles are well characterized by using UV-Visible spectroscopy, TEM, XRD, FT-IR and EDX techniques. The catalytic activities of nanoparticles in the reduction of toxic nitro compounds such as para nitrophenol and para nitroaniline has also been investigated. It is observed that silver nanoparticles show excellent catalytic activity towards the reduction of toxic nitro compounds. This is for the first time, the synthesis of silver nanoparticle using Coccinia grandis fruit extract has been reported

Removal of perilous nitrocompound from aqueous phase using biogenic copper nanoparticles as a catalyst

The present study mainly deals with the preparation of Cu nanoparticles utilizing Cocinia grandis flower extract. Here the flower extract acts as a reducing agent in the formation of Cu nanoparticles. The flower extract reduces the metal ion into metallic nanoparticles and help in the reduction process. A peak appears at 600 nm (UV spectra), establish the formation CuNPs. The synthesized NPs are analyzed using various techniques. As-synthesized CuNPs is utilized as a catalyst for the reduction of noxious nitrocompound

Environmental benign synthesis of low-viscous triethanolamine based hyper- branched epoxy thermoset

A room temperature curable, low viscosity hyper-branched (HPBs) epoxy resin has been synthesised by a single step A2 + B3 polycondensation reaction which would be a good proposition from an industrial point of view. An attempt has been made to obtain industrially suitable hyperbranched epoxy thermosets which exhibit high thermostability, high tensile strength and elongation at break (i.e. high toughness), where an aromatic (Bisphenol A, A2) and aliphatic (Triethanolamine, B3) moiety is combined in the hyperbranched structure of the resin with an aliphatic poly (amido-amine) as a hardener. The prepared resin show surprisingly low viscosity when the ratio of Bisphenol A: Epichlorohydrine (ECH) is maintained at a ratio of 1:3 i.e. a high amount of ECH is added and the remaining ECH is washed off by azeotropic distillation process. Prepared HPBs resins have been studied using 1H NMR, 13C NMR, IR, and TGA analysis. The hyperbranched epoxy resin with 20 wt% triethanolamine (TELA) show high performance and might be utilized in advanced thin film application