材料科学
十二面体
X射线光电子能谱
异质结
光催化
高分辨率透射电子显微镜
分解水
价(化学)
兴奋剂
拉曼光谱
载流子
光催化分解水
纳米-
纳米技术
化学工程
分析化学(期刊)
光电子学
结晶学
化学
催化作用
光学
物理
工程类
透射电子显微镜
复合材料
生物化学
色谱法
有机化学
作者
Zhidong Wei,Yong Zhu,Weiqi Guo,Junying Liu,Wenjian Fang,Zhi Jiang,Wenfeng Shangguan
标识
DOI:10.1016/j.apcatb.2020.118664
摘要
A novel nano-dodecahedron Bi0.5Y0.5VO4 solid solution with a diameter ranging from 20 to 50 nm has been prepared initially. The sample was characterized by XRD, SEM, HRTEM, element mapping, XPS, UV–vis spectrum, Raman spectra, Mott-Schottky and XPS valence band analysis to reveal its properties. Photocatalytic experiment exhibited that H-Bi0.5Y0.5VO4 exhibited a much superior activity than the P-Bi0.5Y0.5VO4 among overall water splitting. The enhanced twisting degree in hetero-Bi0.5Y0.5VO4 (H-Bi0.5Y0.5VO4), which reconstructed the internal electric field and thus promoting the photogenerated carriers migrating directionally to form the direct Z-scheme heterojunction, should be responsible for the improvement of the photocatalytic performances. Furthermore, it also contributed to the morphology edge formation, which could be another critical factor for improving the photocarriers separation efficiency after simulating the rules of charge distribution. Additionally, results also indicated that the co-catalysts [email protected]2O3 could unlock a new charge transfer channel in the procedure of photocatalytic overall water splitting.
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