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首页> 外文期刊>ChemPlusChem >AgFeS2-Nanowire-Modified BiVO4 Photoanodes for Photoelectrochemical Water Splitting
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AgFeS2-Nanowire-Modified BiVO4 Photoanodes for Photoelectrochemical Water Splitting

机译：AGFES2-纳米线改进的BIVO4光电模块用于光电化学水分裂

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Photoelectrochemical water splitting is a promising and environmentally friendly route for the conversion of solar energy into hydrogen. However, the efficiency of this energy conversion process is low because of the limited light absorption and rapid bulk recombination of charge carriers. In this study, the combination of a novel ternary sensitizer AgFeS2, having a narrow bandgap of 0.9eV, with a BiVO4 electrode is presented for the enhancement of the solar-energy-to-hydrogen conversion efficiency. The photoelectrochemical properties of this combined material were investigated and the photocurrent densities of AgFeS2-BiVO4 composite electrodes were greatly enhanced compared with pristine BiVO4 (15times higher at 0.6V vs. Ag/AgCl under AM1.5G illumination). The enhanced photoelectrochemical properties arise from extended light absorption, fast charge transfer and appropriate energy gap alignment. It was demonstrated that AgFeS2 nanowires are promising inorganic sensitizers for improving the efficiency of solar water splitting.
机译：光电化水分是一种有前途和环保的途径，用于将太阳能转化为氢气。然而，这种能量转换过程的效率低，因为电荷载体的有限的光吸收和快速散装重组。在该研究中，具有窄带隙的新型三元敏化剂AGFES2的组合具有0.9EV的窄带隙，用于增强太阳能 - 氢转换效率。研究了该组合材料的光电化学性质，与原始Bivo4相比，增强了AgFES2-BIVO4复合电极的光电流密度（在AM1.5G照明下的0.6V Vs.Ag / AgCl处为0.6V Vs.Ag / AgCl）。增强的光电化学性能来自延长的光吸收，快速电荷转移和适当的能隙对准。结果表明，AgFes2纳米线是有机无机敏感剂，用于提高太阳能分裂的效率。

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