光催化
异质结
材料科学
肖特基势垒
共价键
电子转移
降级(电信)
密度泛函理论
化学工程
图层(电子)
压电
纳米技术
光电子学
光化学
化学
复合材料
催化作用
计算化学
有机化学
电子工程
工程类
二极管
作者
Kun Zhou,Wei Liu,Peifang Wang,Juan Chen,Huinan Che,Bin Liu,Yanhui Ao
标识
DOI:10.1016/j.cej.2023.148012
摘要
Rational design of piezo-assisted photocatalytic systems for simultaneously efficient ultilization of solar and mechanical energy is promising but still challenging. In this work, a novel Bi3Ti4O12@C (BTO@C) Schottky heterojunction with high piezo-assisted photocatalytic performance is rationaly designed, and the degradation reaction rate constant k for RhB reached 0.092 min−1 in 30 min. Experimental results and density functional theory (DFT) calculations show that C-layer is tightly coated on the surface of BTO. Furthermore, C-O covalent bonds, which act as electron transfer channels, are formed at the interface of BTO and C-layer. Meanwhile, the presence of piezoelectric potential field of BTO@C under piezo-assisted photocatalytic conditions further promotes the transfer of photogenerated electrons from BTO to C-layer, which synergistically contributes to the performance enhancement. This work provides a new idea for the design and development of efficient piezo-assisted photocatalytic materials.
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