Sun Dongfeng, Huang Luo, Li Li, Yu Yuan, Du Gaohui, Xu Bingshe
Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi'an 710021, China.
Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi'an 710021, China; School of Materials Science & Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
J Colloid Interface Sci. 2020 Jul 1;571:80-89. doi: 10.1016/j.jcis.2020.03.021. Epub 2020 Mar 9.
This paper presented the plasmonic Bi in-situ deposited on the surface of BiOCO nanoplates forming plasma enhanced Bi/BiOCO heterojunction photocatalyst through a facile one-pot solvothermal method by using methanol as both solvent and carbon source. The water splitting efficiency of the as-prepared Bi/BiOCO heterojunction photocatalyst was much better than that of pure phase BiOCO due to the Bi nanoparticles surface plasma resonance (SPR) effect for promoting light response and the charge carriers separation and transfer. The experimental results also showed that the HO played an important role in the fabrication of Bi/BiOCO heterojunction photocatalyst, furthermore, the content of Bi in Bi/BiOCO changed with the variation of additional HO which impacted photocatalytic activities. The method of semimetal in-situ deposition without reductants in this work also provided new perspectives into the rational design and facile synthesis of bismuth based semiconductor photocatalysts.
本文通过简便的一锅溶剂热法，以甲醇作为溶剂和碳源，介绍了原位沉积在BiOCO纳米片表面的等离子体铋，形成了等离子体增强的Bi/BiOCO异质结光催化剂。由于铋纳米颗粒的表面等离子体共振（SPR）效应促进了光响应以及电荷载流子的分离和转移，所制备的Bi/BiOCO异质结光催化剂的水分解效率远优于纯相BiOCO。实验结果还表明，羟基在Bi/BiOCO异质结光催化剂的制备中起重要作用，此外，Bi/BiOCO中铋的含量随额外羟基的变化而改变，这影响了光催化活性。本工作中无还原剂的半金属原位沉积方法也为铋基半导体光催化剂的合理设计和简便合成提供了新的视角。
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