A BiVO₄/WO₃/FTO (FTO: fluorine doped tin oxide coated glass) multilayer photoelectrode was found to be suitable for photoelectrochemical oxidative hypochlorous acid (HClO) production from chloride ions (Cl⁻). HClO was efficiently produced in the electrolyte solution by irradiating the BiVO₄/WO₃/FTO photoanode with simulated solar light. It was expected that Cl⁻ would be oxidized to chlorine (Cl₂) by the photogenerated holes on the BiVO₄, and then converted to HClO via the disproportionation reaction in an aqueous electrolyte solution. For the first 100 s, the current efficiency for HClO production was 97%, indicating that the photogenerated hole oxidized Cl⁻ with high selectivity in preference to H₂O. Moreover, the BiVO₄/WO₃/FTO multilayer photoanode enabled us to achieve significant diminution of the external bias required for HClO production under solar light irradiation.

中文翻译：

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使用基于BiVO ₄的光阳极通过光电化学太阳能转换来高效生产次氯酸（HClO）

甲BiVO ₄ / WO ₃ / FTO（FTO：氟掺杂的氧化锡涂覆的玻璃）的多层光电极被发现是适合于从氯离子（CL光电化学氧化次氯酸（次氯酸）的生产^- ）。通过用模拟太阳光照射BiVO ₄ / WO ₃ / FTO光电阳极，可在电解液中有效产生HClO 。据预计，氯^-被氧化为氯（Cl ₂通过在BiVO光生空穴）₄，然后转化成的HClO经由在电解质水溶液中的歧化反应。对于第一个100秒，对于高氯酸生产的电流效率为97％，表明该光生空穴氧化氯^-与优先于H高选择性₂ O.此外，BiVO ₄ / WO ₃ / FTO层叠光电阳极，使我们能够实现大大减少了在太阳光照射下生产HClO所需的外部偏压。