纳米棒
光电流
分解水
海水
光电解
材料科学
热液循环
碳纤维
阳极
化学工程
无机化学
化学
纳米技术
电极
电解
电解质
催化作用
光电子学
光催化
物理化学
有机化学
海洋学
地质学
复合数
工程类
复合材料
作者
Ziming Zhao,Qiuchen He,Yang Qv,Feng Zhu,Shu‐Zhong Zhan
标识
DOI:10.1016/j.ijhydene.2023.09.203
摘要
It is essential to promote seawater photoelectrolysis technologies for reducing the dependency on fossil fuels and alleviating the freshwater resources shortage. However, the undesirable chloride oxidation reaction (CER) on the anode side has seriously limited their application. Here, S, N co-doped carbon dots (S, N-CDs) were prepared and successfully decorated on the surface of TiO2 nanorod clusters photoanode via hydrothermal process to inhibit the CER in photoelectrochemical (PEC) seawater splitting. The prepared S, N-CDs/TiO2 photoanode exhibited a photocurrent density of 34.4 μA cm−1 (at 1.23 V RHE), which was around 3 times for that of pure TiO2. More importantly, it exhibited a lower ClO− yield. After 1 h of continuous operation, the concentration of the ClO− was only 6 μM in the final reaction liquid, which was nearly half of that for pure TiO2. It was suggested that S, N-CDs could be potential ideal electrode materials in PEC seawater splitting systems, due to effectively chlorine-repulsing, improving photoelectric properties.
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