铋
光催化
热液循环
降级(电信)
结晶紫
材料科学
可见光谱
光降解
化学工程
复合材料
化学
催化作用
有机化学
光电子学
冶金
病理
工程类
电信
医学
计算机科学
作者
Ciao-Wei Siao,Hung-Lin Chen,Liwen Chen,Jia‐Lin Chang,Tsung‐Wen Yeh,Chiing‐Chang Chen
标识
DOI:10.1016/j.jcis.2018.04.097
摘要
This paper presents an unprecedented systematic synthetic study of a controlled hydrothermal method for the preparation of bismuth oxychloride/bismuth oxybromide/bismuth oxyiodide ternary composites (BiOxCly/BiOmBrn/BiOpIq). The pH, temperature, and KCl:KBr:KI molar ratio for the reactions were adjusted to control the compositions and morphologies of BiOxCly/BiOmBrn/BiOpIq composites. Scanning electron microscopy-energy dispersive X-ray spectroscopy, transmission electron microscopy, X-ray diffraction, ultraviolet-visible diffuse reflectance spectroscopy, Brunauer-Emmett-Teller specific surface areas, photoluminescence spectroscopy, and X-ray photoelectron spectroscopy, and electron paramagnetic resonance spectroscopy were applied to the products. The photocatalytic activities of dispersions were examined by monitoring the 2-hydroxybenzoic acid (HBA) and crystal violet concentrations. Various scavengers demonstrated quenching effects. O2- was crucial to HBA degradation, whereas h+ and OH played minor roles in HBA degradation. This text hypothesizes possible photodegradation mechanisms.
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