Graphitic carbon nitride (g-CN) and zinc indium sulfide (ZnInS) were combined to form CN/ZIS composite materials via a hydrothermal method. The CN/ZIS composites were extensively characterized before they were used for photocatalytic degradation of sodium isobutyl xanthate (SIBX). Results revealed that 3CN/ZIS outperformed other materials, as evidenced by SIBX degradation efficiency of about 8.
View Article and Find Full Text PDFIron-based phosphate is a promising cathode for sodium-ion batteries due to its low cost and abundant resources; however, the practical application is hindered by poor electronic conductivity, sluggish Na diffusion, and a lack of low-cost and scalable synthesis methods. To address such issues, herein, we present a low-cost and scalable spray-drying strategy to synthesize NaFe(PO)PO@CNT (NFPP@CNT) hollow microspheres. The NFPP@CNT composite has the following advantages: highly conductive CNT can significantly improve the electronic conductivity of the cathode, and the flexible CNT-based microsphere architecture facilitates Na diffusion and guarantees excellent mechanical properties to mitigate structural degradation during cycling.
View Article and Find Full Text PDFEfficient nitric oxide (NO) removal without nitrogen dioxide (NO ) emission is desired for the control of air pollution. Herein, a series of (Zr/Ti)UiO-66-NH with congenetic shell-core structure, denoted as Ti-UION, are rapidly synthesized by microwave-assisted post-synthetic modification for NO removal. The optimal Ti-UION (i.
View Article and Find Full Text PDFJ Colloid Interface Sci
April 2023
Dual-single-atom catalysts are well-known due to their excellent catalytic performance of oxygen reduction reaction (ORR) and the tunable coordination environment of the active sites. However, it is still challengable to finely modulate the electronic states of the metal atoms and facilely fabricate a catalyst with dual-single atoms homogeneously dispersed on conductive skeletons with good mass transport. Herein, atomic FeN/ZnN sites anchored N, S co-doped nano-porous carbon plates/nanotubes material (FeZnNSC) is rationally prepared via a facile room-temperature reaction and high-temperature pyrolysis.
View Article and Find Full Text PDFAccurate and reliable forecasting of PM and PM concentrations is important to the public to reasonably avoid air pollution and for the governmental policy responses. However, the prediction of PM and PM concentrations has great uncertainty and instability because of the dynamics of atmospheric flows, making it difficult for a single model to efficiently extract the spatial-temporal dependences. This paper reports a robust forecasting system to achieve accurate multi-step ahead forecasting of PM and PM concentrations.
View Article and Find Full Text PDFRSC Adv
November 2020
Unlabelled: The dispersion of gaseous pollutant around buildings is complex due to complex turbulence features such as flow detachment and zones of high shear. Computational fluid dynamics (CFD) models are one of the most promising tools to describe the pollutant distribution in the near field of buildings. Reynolds-averaged Navier-Stokes (RANS) models are the most commonly used CFD techniques to address turbulence transport of the pollutant.
View Article and Find Full Text PDFEnviron Sci Technol
February 2014
Experiments were conducted using a custom double-stirred tank reactor to determine the rate constants of reactions between nitric oxide (NO) and both pentaaminecobalt(II) and hexaaminecobalt(II) at temperatures of 298.2 and 303.2 K and pH levels between 8.
View Article and Find Full Text PDFOsteoclasts dissolve bone through acidification of an extracellular compartment by means of a multimeric vacuolar type H+-ATPase (V-ATPase). In mammals, there are four isoforms of the 100-kDa V-ATPase "a" subunit. Mutations in the a3 isoform result in deficient bone resorption and osteopetrosis, suggesting that a3 has a unique function in osteoclasts.
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