纳米片
甲基橙
材料科学
光催化
光电流
热液循环
化学工程
光降解
氧化铟锡
带隙
扫描电子显微镜
纳米技术
水热合成
基质(水族馆)
薄膜
光电子学
复合材料
催化作用
化学
有机化学
工程类
地质学
海洋学
作者
Wei Zhang,Hao Chen,Lina Zhang,Shan Zhang,Enlai Dong,Jinwen Ma,Shuping Xu,Haibo Li,Guiqiang Wang
标识
DOI:10.1016/j.jallcom.2019.153545
摘要
In this paper, CaIn2S4 films with vertically aligned and interconnected hierarchical nanosheets were directly fabricated on tin-doped indium oxide (ITO) substrate via a facile hydrothermal process with no additional directing agent. The crystal structure, morphology and optical properties of the obtained CaIn2S4 films were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and UV–vis spectra. The results revealed the successful synthesis of uniform CaIn2S4 hierarchical nanosheet films on ITO substrate with a whole thickness of about 3 μm and an average nanosheet thickness of about 20 nm, with the band gap of 2.17 eV. A possible mechanism for the formation of CaIn2S4 films in hydrothermal process has been proposed. The CaIn2S4 hierarchical nanosheet films exhibited a photocurrent density of approximate 0.2 mA cm−2 at 0.82 V (vs. NHE) in a neutral solution. In addition, the CaIn2S4 films also exhibited superior photocatalytic activity for methyl orange and 1-naphthol. This study provided a green and facile method for the synthesis of high-quality CaIn2S4 films applied in photocatalytic water splitting and photodegradation of organic pollutant.
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