纳米棒
聚吡咯
材料科学
光电流
异质结
分解水
涂层
半导体
纳米技术
化学工程
溶解
光催化
光电子学
聚合物
化学
复合材料
有机化学
催化作用
工程类
聚合
作者
Xiaoyu Xie,Ru Wang,Jinping Chen,Yi Ma,Zhiyong Li,Qiannan Cui,Zengliang Shi,Chunxiang Xu
出处
期刊:Dalton Transactions
[The Royal Society of Chemistry]
日期:2022-01-01
卷期号:51 (47): 18109-18117
摘要
It is of practical significance to manufacture high-performance and durable semiconductor heterojunctions for photoelectrochemical (PEC) water splitting. Herein, hydrophilic polypyrrole and graphitic carbon nitride (g-C3N4) co-decorated ZnO nanorod arrays were synthesized as a photoanode by facile spin-coating and plasma-treatment methods. On the one hand, g-C3N4 nanosheets are modified on ZnO nanorod arrays to broaden the light-absorption range and suppress the recombination of photogenerated charges. On the other hand, the polypyrrole coating layer inhibits the dissolution and corrosion of ZnO nanorods and constructs a p-n heterojunction with ZnO to further promote the separation and transfer of photogenerated charge carriers. Furthermore, its hydrophilic surface provides a vast electrochemically active surface area for efficient charge/mass transfer. As a result, the as-prepared photoanode exhibits an enhanced PEC performance with a distinctly increased photocurrent and remarkably ameliorated stability in contrast to the ZnO photoanode. This research would provide an innovative perspective on the design of organic/inorganic semiconductor heterojunctions with excellent performance and stability for PEC water-splitting systems.
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