In this work, an Ag₃PO₄-modified BiVO₄ electrode was prepared on an FTO substrate and used as a photoanode for photoelectrocatalytic degradation of organic contaminants. The photocurrent generated from the synthesized Ag₃PO₄/BiVO₄ photoelectrode under visible light irradiation was more than twice that from pure the BiVO₄ electrode, which could be attributed to the lower recombination rate of the photogenerated electron–hole pairs of the Ag₃PO₄/BiVO₄ photoanode, as proved by the electrochemical impedance spectroscopy and photoluminescence spectra. The Ag₃PO₄/BiVO₄ electrode was effective for the oxidation of organic pollutants in photoelectrocatalysis systems at relatively low bias potentials. A higher photoelectrocatalytic activity for norfloxacin degradation was observed when the Ag₃PO₄/BiVO₄ electrode was than with the BiVO₄ electrode, where norfloxacin with an initial concentration of 5 mg/L could be degraded within 90 min. The apparent rate constants of norfloxacin degradation using a BiVO₄ electrode and Ag₃PO₄/BiVO₄ are estimated to be 2.83 × 10⁻⁴ min⁻¹ (R² = 0.994) and 7.94 × 10⁻⁴ min⁻¹ (R² = 0.996), respectively. Analysis of the degradation intermediates indicated that the piperazine ring and the carboxyl group of the norfloxacin were attacked during the degradation process. The Ag₃PO₄/BiVO₄ photoanode was also proved to be effective for the degradation of two other antibiotics, sulfamethoxazole and oxytetracycline.

在这项工作中，在FTO基板上制备了Ag ₃ PO ₄修饰的BiVO ₄电极，并将其用作光阳极催化光电降解有机污染物的阳极。合成的Ag ₃ PO ₄ / BiVO ₄光电极在可见光照射下产生的光电流是纯BiVO ₄电极的两倍，这可能是由于Ag ₃的光生电子-空穴对的复合率较低通过电化学阻抗谱和光致发光光谱证明，PO ₄ / BiVO ₄光电阳极。银₃PO ₄ / BiVO ₄电极在较低的偏压下可有效地氧化光电催化系统中的有机污染物。当Ag ₃ PO ₄ / BiVO ₄电极比BiVO ₄电极时，观察到了更高的对诺氟沙星降解的光电催化活性，其中初始浓度为5 mg / L的诺氟沙星可以在90分钟内降解。使用BiVO ₄电极和Ag ₃ PO ₄ / BiVO ₄的诺氟沙星降解的表观速率常数估计为2.83×10 ^-4 min ^-1（R²  = 0.994）和7.94×10 ^-4 min ^-1（R ²  = 0.996）。对降解中间体的分析表明，在降解过程中哌嗪环和诺氟沙星的羧基均受到攻击。还证明了Ag ₃ PO ₄ / BiVO ₄光电阳极可有效降解其他两种抗生素磺胺甲恶唑和土霉素。