光电阴极
降级(电信)
材料科学
阴极
阳极
X射线光电子能谱
光催化
电极
异质结
化学工程
紫外线
微生物燃料电池
光电子学
电子
催化作用
计算机科学
化学
有机化学
电信
物理
物理化学
量子力学
工程类
作者
Tingting Yu,Nana Zhang,Rong Zhang,Chenyu Yang,Arramel Arramel,Jizhou Jiang
标识
DOI:10.1016/j.jmst.2023.12.004
摘要
The upsurge of interest in the emergence of photocatalytic fuel cell systems (PFC) presents an efficient and environmentally friendly approach to wastewater treatment. In this work, a Z-scheme coupled with an S-scheme heterojunction electrode was used in the PFC, utilizing TiO2/GO/g-C3N4 as the photoanode and BiOAc1–xBrx/BiOBr as the photocathode. We systematically align the band structures between the anode and cathode, which facilitates the electron transfer between the electrodes. Our attempt successfully demonstrates that collaborative power generation facilitates the high efficiency of tetracycline hydrochloride (TC) degradation at both electrodes. The photoanode achieved a 94.87% degradation rate for TC, while the photocathode exhibited a 96.33% degradation rate after 2 h, surpassing pristine BiOBr and BiOAc by factors of ∼5.3 and ∼3.8, respectively. Furthermore, this work proposed a mechanism for electron generation, transport, and pollutant degradation mechanism in the PFC. Intermediate substances generated during the degradation of TC were analyzed through high-performance liquid chromatography-mass spectrometry (HPLC-MS) and ultraviolet photoelectron spectroscopy (UPS), while the optimal degradation pathway was confirmed using density functional theory (DFT). The findings of this work establish the feasibility of efficiently degrading pollutants through PFC treatment, introducing a novel system where various heterojunctions in bipolar materials collaborate with photocatalysis to effectively generate electricity and enhance pollutant removal.
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