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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 >CuO-ZnO hetero-junctions decorated graphitic carbon nitride hybrid nanocomposite: Hydrothermal synthesis and ethanol gas sensing application
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CuO-ZnO hetero-junctions decorated graphitic carbon nitride hybrid nanocomposite: Hydrothermal synthesis and ethanol gas sensing application

机译：CuO-ZnO异联件装饰石墨氮化物杂交纳米复合材料：水热合成和乙醇气体传感施用

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摘要

ZnO and CuO have attracted considerable attention for their potential application in gas sensors. However, they also have some disadvantages, such as high operating temperature and poor sensitivity. Graphitic carbon nitride (g-C3N4) has been widely used as metal-free catalyst and catalyst support in gas sensing field due to its unique chemical stability and excellent substrate characteristics. In this study, a one-step hydrothermal method was developed for the preparation of a CuO-ZnO/g-C3N4 ternary composite. The as-prepared samples were characterized by using the XRD, SEM, TEM, FTIR, UV-vis and XPS techniques. The analysis results indicated that the ternary composite was synthesized successfully. The morphological analyses demonstrated that the flake-like CuO and ZnO nanoparticles were wrapped and connected by g-C3N4 nanosheet. The as-prepared CuO-ZnO/g-C3N4 exhibited obviously enhanced sensing properties to ethanol, which were 1.34 times and 2.17 times higher than that of CuO-ZnO and CuO, respectively. The improving gas sensing properties were related to the valid p-n junctions of CuO-ZnO and excellent substrate effect of g-C3N4 nanosheet. (C) 2018 Elsevier B.V. All rights reserved.
机译：ZnO和Cuo吸引了对气体传感器潜在应用的相当大的关注。然而，它们也具有一些缺点，例如高工作温度和敏感性差。由于其独特的化学稳定性和优异的基材特性，石墨碳氮化物（G-C3N4）已被广泛用作气体传感场中的无金属催化剂和催化剂载体。在该研究中，开发了一种用于制备CuO-ZnO / G-C3N4三元复合材料的一步水热法。通过使用XRD，SEM，TEM，FTIR，UV-Vis和XPS技术来表征AS制备的样品。分析结果表明，三元复合材料已成功合成。形态学分析表明，通过G-C3N4纳米片包裹着薄片样CuO和ZnO纳米颗粒。制备的CuO-ZnO / G-C3N4显着增强了乙醇的感测性能，分别比CuO-ZnO和CuO高的1.34倍至2.17倍。改善的气体传感性能与CuO-ZnO的有效P-N结有关，以及G-C3N4纳米片的优异底物效应。 （c）2018年elestvier b.v.保留所有权利。

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