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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >A facile hydrothermal approach for the deposition of CaIn2S4 hierarchical nanosheet films for photocatalytic application
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A facile hydrothermal approach for the deposition of CaIn2S4 hierarchical nanosheet films for photocatalytic application

机译:用于沉积CAIN2S4分层纳米片薄膜的容易水热方法,用于光催化应用

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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 mu m 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. (C) 2019 Elsevier B.V. All rights reserved.
机译:在本文中,以垂直排列和相互连接的纳米片分层CaIn2S4薄膜直接制作在氧化锡掺杂铟(ITO)基底通过一个浅显的热液没有额外的导向剂的过程。通过X射线衍射(XRD),场发射扫描电子显微镜(FESEM)和UV-vis光谱的晶体结构,形态和获得CaIn2S4膜的光学性质进行表征。结果表明ITO基片上均匀的CaIn2S4分层纳米片膜的成功合成具有约3微米的整体厚度和大约20纳米的平均纳米片的厚度,以2.17电子伏特的带隙。已经提出了在水热法CaIn2S4膜的形成的可能机制。所述CaIn2S4分层纳米片膜在中性溶液在0.82 V(相对于NHE)表现出近似0.2毫安厘米(-2)的光电流密度。此外,CaIn2S4膜也显示出对甲基橙和1-萘酚优良的光催化活性。该研究提供了在光催化分解水和有机污染物的光降解应用于高质量CaIn2S4膜的合成绿色和容易的方法。 (c)2019 Elsevier B.v.保留所有权利。

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