Brookite vs Anatase TiO₂ in the Photocatalytic Activity for Organic Degradation in Water

Brookite is the least studied TiO₂, and its photocatalytic activity higher or lower than that of anatase still remains unclear. In this work, three different model reactions have been used for the activity assessment. Phase-pure brookite and anatase were homemade at different temperatures (<i>T</i>_s = 200–500 °C), as confirmed by X-ray diffraction and Raman spectroscopy. For phenol oxidation in aerated aqueous solution, brookite showed an apparent activity higher and lower than that of anatase at low and high <i>T</i>_s, respectively. For chromate reduction in aerated aqueous suspension, the apparent activity of brookite was always lower than that of anatase. However, with the same amount of Cr­(VI) or Ag­(I) adsorbed on the oxide in water for Cr­(VI) reduction or for phenol degradation under N₂, the intrinsic activities of brookite and anatase not only became similar at given <i>T</i>_s but also increased with the increase of <i>T</i>_s. Moreover, for O₂ reduction to H₂O₂ in the presence of excess phenol, the BET surface area normalized activity of brookite was always higher than that of anatase, the trend of which was similar to that observed from phenol degradation in aerated aqueous solution. It is proposed that brookite has a stronger affinity to O₂ in water than anatase. Then, the observed difference between brookite and anatase in the apparent photocatalytic activity for phenol degradation is ascribed to the combined effect of <i>T</i>_s, surface area, and sorption capacity toward the dissolved O₂ in water

DataSheet_1_Analysis of the key ligand receptor CADM1_CADM1 in the regulation of thyroid cancer based on scRNA-seq and bulk RNA-seq data.zip

IntroductionAdvanced papillary thyroid cancer (PTC) has a poor prognosis, 60~70% of which become radio iodine refractory (RAI-R), but the molecular markers that assess PTC progress to advanced PTC remain unclear. Meanwhile, current targeted therapies are badly effective due to drug resistance and adverse side effects. Ligand-receptor pairs (L/R pairs) play an important role in the interactions between tumor cells and other cells in the tumor microenvironment (TME). Nowadays, therapies targeting ligand-receptor pairs in the TME are advancing rapidly in the treatment of advanced cancers. However, therapies targeting L/R pairs applied to advanced PTC remains challenging because of limited knowledge about L/R pairs in PTC.MethodsWe screened the critical L/R pair: CADM1-CADM1 using 65311 single-cell RNA sequencing (scRNA-seq) samples from 7 patients in different stage of PTC and bulk RNA-seq datasets containing data from 487 tumor samples and 58 para-carcinoma samples. Moreover, the expression levels of CADM1-CADM1 was assessed by quantitative real time polymerase chain reaction (qRT-PCR) and the function was analyzed using Transwell immigration assay.ResultsWe found that CADM1_CADM1 could be regarded as a biomarker representing a good prognosis of PTC. In addition, the high expression of CADM1_CADM1 can strongly increase the sensitivity of many targeted drugs, which can alleviate drug resistance. And the results of qRT-PCR showed us that the expression of CADM1_CADM1 in PTC was down-regulated and overexpression of CADM1 could suppresses tumor cell invasion migration.ConclusionOur study identified that CADM1_CADM1 played an essential role in the progression of PTC for the first time and our findings provide a new potential prognostic and therapeutic ligand-receptor pair for advanced PTC.</p

Synergy of W₁₈O₄₉ and Polyaniline for Smart Supercapacitor Electrode Integrated with Energy Level Indicating Functionality

Supercapacitors are important energy storage technologies in fields such as fuel-efficient transport and renewable energy. State-of-the-art supercapacitors are capable of supplanting conventional batteries in real applications, and supercapacitors with novel features and functionalities have been sought for years. Herein, we report the realization of a new concept, a smart supercapacitor, which functions as a normal supercapacitor in energy storage and also communicates the level of stored energy through multiple-stage pattern indications integrated into the device. The metal-oxide W₁₈O₄₉ and polyaniline constitute the pattern and background, respectively. Both materials possess excellent electrochemical and electrochromic behaviors and operate in different potential windows, −0.5–0 V (W₁₈O₄₉) and 0–0.8 V (polyaniline). The intricate cooperation of the two materials enables the supercapacitor to work in a widened, 1.3 V window while displaying variations in color schemes depending on the level of energy storage. We believe that our success in integrating this new functionality into a supercapacitor may open the door to significant opportunities in the development of future supercapacitors with imaginative and humanization features

Organic–Inorganic Hybrid Interfacial Layer for High-Performance Planar Perovskite Solar Cells

4,7-Diphenyl-1,10-phenanthroline (Bphen) is an efficient electron transport and hole blocking material in organic photoelectric devices. Here, we report cesium carbonate (Cs₂CO₃) doped Bphen as cathode interfacial layer in CH₃NH₃PbI_3–<i>x</i>Cl_<i>x</i> based planar perovskite solar cells (PSCs). Investigation finds that introducing Cs₂CO₃ suppresses the crystallization of Bphen and benefits a smooth interface contact between the perovskite and electrode, resulting in the decrease in carrier recombination and the perovskite degradation. In addition, the matching energy level of Bphen film in the PSCs effectively blocks the holes diffusion to cathode. The resultant power conversion efficiency (PCE) achieves as high as 17.03% in comparison with 12.67% of reference device without doping. Besides, experiments also demonstrate the stability of PSCs have large improvement because the suppressed crystallization of Bphen by doping Cs₂CO₃ as a superior barrier layer blocks the Ag atom and surrounding moisture access to the vulnerable perovskite layer

Semiconductor SERS enhancement enabled by oxygen incorporation

<p>Semiconductor-based surface-enhanced Raman spectroscopy (SERS) substrates represent a new frontier in the field of SERS. However, the application of semiconductor materials as SERS substrates is still seriously impeded by their low SERS enhancement and inferior detection sensitivity, especially for non-metal-oxide semiconductor materials. Herein, we demonstrate a general oxygen-incorporation-assisted strategy to magnify the semiconductor substrate–analyte molecule interaction, leading to significant increase in SERS enhancement for non-metal-oxide semiconductor materials. Oxygen incorporation in MoS₂ even with trace concentrations can not only increase enhancement factors by up to 100,000 folds compared with oxygen-unincorporated samples, but also endow MoS₂ with low limit of detection below 10^-7 M. Intriguingly, combined with the findings in previous studies, our present results indicate that both oxygen incorporation and extraction processes can result in SERS enhancement, probably due to the enhanced charge-transfer resonance as well as exciton resonance arising from the judicious control of oxygen admission in semiconductor substrate.</p

Additional file 1 of RBM10 regulates alternative splicing of lncRNA Neat1 to inhibit the invasion and metastasis of NSCLC

Additional file 1: Figure S1. The flow chart of Clip-Seq

Additional file 1: of Nitrogen-Doped Carbon Dots for “green” Quantum Dot Solar Cells

Fluorescence quantum yields and characterizations ofnitrogen-doped carbon dots. (DOCX 87 kb

Additional file 1: Figure S1. of Lipopolysaccharide induces SBD-1 expression via the P38 MAPK signaling pathway in ovine oviduct epithelial cells

The mRNA levels of SBD-1 and SBD-2 in ovine oviduct epithelial cells. The quantitative RT-PCR results showed that SBD-1 mRNA was expressed at a very high level in ovine oviduct epithelial cells, while SBD-2 mRNA was not detectable. All of the experiments were repeated at least three times. *p < 0.05, **p < 0.01 (t-test) vs. SBD-1. (TIF 128 kb

Additional file 1: of Self-Cleaning Glass of Photocatalytic Anatase TiO2@Carbon Nanotubes Thin Film by Polymer-Assisted Approach

Supporting information. (DOCX 860 kb