异质结
光催化
化学
铋
钛酸酯
钛酸铋
鳞片岩
水溶液
光降解
化学工程
煅烧
无机化学
纳米技术
陶瓷
吸附
光电子学
材料科学
铁电性
物理化学
有机化学
催化作用
电介质
工程类
针铁矿
作者
Taya Ko Saothayanun,Rattanawadee Ploy Wijitwongwan,Makoto Ogawa
出处
期刊:Inorganic Chemistry
[American Chemical Society]
日期:2022-12-02
卷期号:61 (50): 20268-20276
被引量:3
标识
DOI:10.1021/acs.inorgchem.2c02198
摘要
Bismuth oxyhalides and layered alkali titanates are promising components to design high-performance hybrid photocatalysts. In this work, a hybrid photocatalyst composed of lepidocrocite-type layered cesium titanate (Cs0.7Ti1.77Li0.23O4, CsTLO) and bismuth oxyiodide (BiOI) was designed rationally based on lattice matching. BiOI formed on the layered titanate by ion exchange of CsTLO with Bi cations and subsequent growth of BiOI nanodisks (6 nm in the thickness and 125 nm in the lateral size) in an aqueous solution of cesium iodide, resulting in the hybrid where BiOI nanodisks were lying flat on the layered titanate and exposed the (001) facet predominantly. The present hybrid exhibited efficient photodegradation of methylene blue (4, 10, and 14 times higher than that of CsTLO, Bi-TLO, and BiOI, respectively), which was ascribed to the efficient charge transfer in the bulk and at the interface assisted by the built-in internal electric fields and the high activity of (001) BiOI for direct oxidation of the pollutant.
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