金红石
锐钛矿
同质结
光催化
材料科学
二氧化钛
催化作用
离解(化学)
带隙
价带
化学工程
纳米技术
化学
光电子学
兴奋剂
物理化学
冶金
工程类
生物化学
作者
Pooja P. Sarngan,Agasthiyaraj Lakshmanan,Debabrata Sarkar
出处
期刊:Chemosphere
[Elsevier]
日期:2022-01-01
卷期号:286: 131692-131692
被引量:18
标识
DOI:10.1016/j.chemosphere.2021.131692
摘要
Removal of toxic air and water dissociation in the environment has become a major challenging issue throughout the world. Mixed phase rutile-anatase titanium dioxide catalysts are very effective in photocatalysis and have been studied extensively. However, the mechanism causing this effect and band alignment of the two phases are not fully understood. Pointing to the issue, we have designed one-dimensional mixed-phase TiO2 and introduced defects near the valence band. Experimental results showed that band alignment between two phases, up-shift of the band edge, and optimum anatase percentage play a key role in the enhancement of the photocatalytic activity. We predicted shifts in band edge originating from surface electric dipole layer induced by defects.
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