Qianxin Xu , Yang Zhang , Meihong Lu , Beiwen Gan , Kai Zhang , Dawei Lu , Shirong Lin , Laijun Liu , Yumei Qin
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引用次数: 0
摘要
通过电子机械耦合和太阳能诱导的光生载流子可实现高效催化转化。本研究通过无有机溶剂原位还原,构建了一种先进的半金属 Bi 装饰 Bi4Ti3O12(Bi/BTO)异质结催化剂。在 70 分钟内,Bi/BTO 催化剂对甲基溴的压光催化去除率达到 87.2%,速率常数分别是压催化和光催化的 2.23 倍和 1.80 倍。性能的提高不仅得益于 Bi 纳米粒子的表面等离子体共振效应增强了光吸收并加速了电荷分离,还得益于 Bi4Ti3O12 的压电效应增强了内部电场。此外,金属钛模板可回收用于合成 Bi/BTO 催化剂,从而有利于商业规模的应用。这项工作展示了设计高效催化剂以利用天然太阳能和机械能的有效策略。
Excellent piezo-photocatalytic performance of plasmonic Bi/Bi4Ti3O12 heterojunction synthesized by in-situ reduction
Efficient catalytic conversion can be achieved by electro-mechanical coupling and solar energy-induced photogenerated carriers. In this work, an advanced semimetal Bi decorated Bi4Ti3O12 (Bi/BTO) heterojunction catalyst was constructed through in-situ reduction without organic solvent. The piezo-photocatalytic removal toward MB of Bi/BTO catalyst reaches 87.2% within 70 min, and the rate constant is 2.23 and 1.80 times higher than that of piezocatalysis and photocatalysis, respectively. The enhanced performance is attributed to not only surface plasmon resonance effect of Bi nanoparticles that enhances light absorption and accelerates charge separation, but also the piezoelectric effect of Bi4Ti3O12 which strengthens internal electric fields. Moreover, the metal titanium template can be recycled to synthesize Bi/BTO catalyst, thus favouring commercial-scale application. This work demonstrates an effective strategy to design efficient catalyst to utilize natural solar and mechanical energy.
期刊介绍:
The aim of the journal is to provide a respectful outlet for ''sound science'' papers in all research areas on surfaces and interfaces. We define sound science papers as papers that describe new and well-executed research, but that do not necessarily provide brand new insights or are merely a description of research results.
Surfaces and Interfaces publishes research papers in all fields of surface science which may not always find the right home on first submission to our Elsevier sister journals (Applied Surface, Surface and Coatings Technology, Thin Solid Films)