In this work, a functional photoelectrocatalytic membrane (PEM) electrode was prepared by loading polyvinylidene fluoride (PVDF) layer onto one side of carbon fibre felt (CF) and ZnIn₂S₄ microparticles onto the other side. The ZnIn₂S₄/CF/PVDF membrane was characterised by scanning electron microscope (SEM) equipped with an energy dispersive spectroscopy detector (EDS), Fourier transform infrared spectrometer (FT-IR) and BET surface area. The cyclic voltammetry (CV) and the photocurrent response measurements were also tested. The ZnIn₂S₄/CF/PVDF membrane had good electrical conductivity for photoelectrocatalytic degradation of tetracycline (TC). The optimized degradation condition with applied voltage of -0.3 ​V, pH of 6.5 and electrolyte concentration of 50 ​mmol ​L^-1 was determined in operating mode with effluent circulating to reactor, which can realize the TC removal efficiency of 87% and mineralization of 52% under reaction time of 3 ​h. The PEM remained stable during 4 days of continuous influent and effluent experiments. The yield of superoxide radical (·O₂^-) and hydroxyl radical (·OH) was 4.17×10^-5 ​mol ​L^-1 and 1.04×10^-5 ​mol ​L^-1, respectively. The degradation pathways of TC by photocatalysis, electrocatalysis and photoelectrocatalysis were compared and proposed, respectively. The generated intermediates during the continuous influent and effluent process were also identified.

在这项工作中，通过将聚偏二氟乙烯（PVDF）层装载到碳纤维毡（CF）的一侧，并将ZnIn ₂ S ₄微粒装载到另一侧，来制备功能性光电催化膜（PEM）电极。ZnIn ₂ S ₄ / CF / PVDF膜通过配备有能量色散检测器（EDS），傅立叶变换红外光谱仪（FT-IR）和BET表面积的扫描电子显微镜（SEM）进行表征。还测试了循环伏安法（CV）和光电流响应测量值。ZnIn ₂ S ₄/ CF / PVDF膜具有良好的电导率，可对四环素（TC）进行光电催化降解。在操作模式下，将废水循环到反应器中，在运行模式下确定了施加电压为-0.3 V，pH为6.5，电解质浓度为50 mmol L ^-1的最佳降解条件，可实现TC去除效率为87％和矿化在3小时的反应时间下达到52％。在连续进水和出水实验的4天中，PEM保持稳定。的收率超氧自由基（·O2 ₂ ^- ）和羟基自由基（·OH）为4.17×10 ^-5 摩尔大号^-1和1.04×10 ^-5 摩尔大号^-1， 分别。比较并提出了光催化，电催化和光电催化降解TC的途径。还确定了连续进水和出水过程中产生的中间体。