Abstract Phase effect of bismuth vanadate (BiVO4) nanostructured catalysts for the photoelectrochemical (PEC) solar water oxidation, removal of toxic organic pollutants from wastewater, and electrochemical storage were reported. The monoclinic (BV-M) and tetragonal (BV-T) crystal structured BiVO4 photocatalysts were synthesized using a facile hydrothermal route without the support of any template. The BV-T photoelectrode also exhibits lower charge transfer resistance compare to BV-M photoelectrode. The BV-T photoelectrode showed a remarkable photocurrent density (0.4249 mAcm−2) over BV-M photoelectrode (0.0702 mAcm−2), which is about 6 times greater than BV-M photoanode. Furthermore, BV-T sample showed 17 times superior electrochemical capacitance over BV-M sample at the scan rate of 10 mVs−1. The photocatalytic analysis has also shown that the BV-T photocatalyst revealed greater photocatalytic activity for the methyl orange under visible light, about 87.8% of the MO was degraded within 80 min.

中文翻译：

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使用 BiVO4 纳米结构的高度增强的光电催化水氧化 新型 BiVO4 纳米结构用于环境修复、增强的光电催化水氧化和电化学储能性能

摘要 报道了钒酸铋 (BiVO4) 纳米结构催化剂在光电化学 (PEC) 太阳能水氧化、废水中有毒有机污染物的去除和电化学存储中的相效应。单斜 (BV-M) 和四方 (BV-T) 晶体结构的 BiVO4 光催化剂是使用简便的水热路线合成的，无需任何模板的支持。与 BV-M 光电极相比，BV-T 光电极还表现出较低的电荷转移电阻。BV-T 光电极比 BV-M 光电极（0.0702 mAcm-2）表现出显着的光电流密度（0.4249 mAcm-2），是 BV-M 光阳极的约 6 倍。此外，在 10 mVs-1 的扫描速率下，BV-T 样品显示出比 BV-M 样品优越 17 倍的电化学电容。