Wei Pifeng, Zhang Piyong, Zhang Yifan, Li Xuemei
School of Chemistry and Chemical Engineering, Linyi University, Linyi 276005, Shandong, China.
School of Chemistry and Chemical Engineering, Linyi University, Linyi 276005, Shandong, China.
J Colloid Interface Sci. 2022 Mar;609:785-793. doi: 10.1016/j.jcis.2021.11.090. Epub 2021 Nov 19.
A plasmonic CuSn/polyaniline (CuSn/PANI) nanocomposite was synthesized by chemical reduction and hydrothermal methods. The best photocatalytic overall water splitting performance was achieved by the CuSn/PANI composite, which contains 3 wt% PANI, which is approximately three times more than that of pure CuSn. Meanwhile, CuSn/PANI exhibited excellent photocatalytic stability for water splitting during the stability investigation. The dramatic promotion of the photocatalytic activity performance can be ascribed to the cocatalyst PANI. The existence of PANI can remarkably promote the separation and transfer efficiency of the photoinduced electron-hole pairs, and therefore enhance the photocatalytic activity. Our results also verify that the photogenerated charge comes from plasmonic CuSn with the surface plasmon resonance (SPR) effect, which is different from traditional semiconductor-based photocatalysts. This work sheds some light on plasmonic photocatalyst development and provides an alternative pathway for photocatalytic reactions.
通过化学还原法和水热法合成了一种等离子体铜锡/聚苯胺（CuSn/PANI）纳米复合材料。含3 wt%聚苯胺的CuSn/PANI复合材料实现了最佳的光催化全分解水性能，其性能约为纯CuSn的三倍。同时，在稳定性研究中，CuSn/PANI对水分解表现出优异的光催化稳定性。光催化活性性能的显著提升可归因于助催化剂聚苯胺。聚苯胺的存在可显著提高光生电子-空穴对的分离和转移效率，从而增强光催化活性。我们的结果还证实，光生电荷来自具有表面等离子体共振（SPR）效应的等离子体铜锡，这与传统的基于半导体的光催化剂不同。这项工作为等离子体光催化剂的开发提供了一些启示，并为光催化反应提供了一条替代途径。
