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Size Dependent Photocatalytic Activity of ZnO Nanosheets for Degradation of Methyl Red
Frontiers in Materials ( IF 2.6 ) Pub Date : 2020-09-29 , DOI: 10.3389/fmats.2020.562693
Abdullah Aljaafari

In this work, ZnO nanosheets with a tunable thickness were produced by a microwave-assisted hydrothermal-based method. The product was well characterized by various tools such as XRD, SEM, EDX spectroscopy, TEM, and Raman spectroscopy. ZnO nanosheets were highly crystalline and possessed a single phase with the wurtzite structure. The ZnO nanosheets have a thickness ranging from 20 to 50 nm, as shown by the micrographs of SEM. The SAED pattern infered that the ZnO nanosheets have a single crystal nature with preferential growth direction along [0001]. ZnO nanosheets with E2high mode of wurtzite structure were observed by Raman scattering spectra. The photodegradation of methyl red using ZnO nanosheets was measured under UV light irradiation. In comparison with the commercial ZnO, ZnO nanosheets showed higher efficiency in photodegradation of organic dyes. The thinner the nanosheets, the higher their performance, which can be explained based on surface area. The excellent performance of ZnO nanosheets in photodegradable organic dyes might be important in environmental treatment and photocatalysis applications.



中文翻译:

ZnO纳米片的尺寸依赖性光催化降解甲基红的活性

在这项工作中,通过微波辅助水热法制备了厚度可调的ZnO纳米片。通过各种工具(例如XRD,SEM,EDX光谱,TEM和拉曼光谱)对产品进行了很好的表征。ZnO纳米片是高度结晶的,具有纤锌矿结构的单相。如SEM的显微照片所示,ZnO纳米片的厚度为20至50nm。SAED图案推断出ZnO纳米片具有沿[0001]具有优先生长方向的单晶性质。E 2的ZnO纳米片拉曼散射光谱观察到纤锌矿结构的模态。使用ZnO纳米片在紫外光照射下测量了甲基红的光降解。与商业ZnO相比,ZnO纳米片在有机染料的光降解中显示出更高的效率。纳米片越薄,其性能越高,这可以基于表面积来解释。ZnO纳米片在可光降解有机染料中的优异性能可能在环境处理和光催化应用中很重要。

更新日期:2020-11-18
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