纳米-p-CuO/n-T-ZnOw复合催化剂的合成及其光催化性能研究

摘要/Abstract

摘要： 本文采用化学沉积法制备了纳米-p-CuO/n-T-ZnOw复合催化剂,讨论了合成体系中聚乙二醇-600(PEG-600)浓度对样品的物相、微观形貌以及光催化活性等的影响。研究结果表明:在合成体系中PEG-600对CuO纳米颗粒沉积在T-ZnOw表面起着重要的作用,随着PEG-600浓度的增加,T-ZnOw表面沉积的CuO纳米颗粒越密集;在紫外光照条件下,合成的样品对亚甲基蓝(MB)和甲基橙(MO)的光催化降解率均明显高于单一T-ZnOw,p型CuO纳米颗粒沉积在n型T-ZnOw表面可以促使光生电子-空穴对发生分离,有效提高T-ZnOw的光催化活性;其中合成体系中PEG-600浓度为0.6 mol/L时制得的样品光催化活性最高。该研究可为简便低成本制备高性能纳米-p-CuO/n-T-ZnOw复合半导体催化剂提供参考。

关键词: 纳米-p-CuO/n-T-ZnOw, 复合催化剂, 化学沉积法, 紫外光照, PEG-600, 光催化活性

Abstract: In this paper, the nano-p-CuO/n-T-ZnOw composite catalysts were prepared by chemical deposition method, and the effects of polyethylene glycol-600 (PEG-600) concentration in the synthesis system on the phase, microstructure and photocatalytic activity of samples were discussed. The results show that PEG-600 plays an important role in the deposition of CuO nanoparticles on the surface of T-ZnOw in the synthesis system, with the increase of PEG-600 concentration, the denser p-CuO nanoparticles deposited on the surface of n-T-ZnOw. All the compounds exhibit excellent photocatalytic activity in decomposing of methylene blue (MB) and methyl orange (MO) under UV light than that of T-ZnOw, the photocatalytic activity of the samples increase with the increasing of PEG-600 concentration up to 0.6 mol/L, while it decreases when further increasing the PEG-600 concentration. This study is expected to provide a reference for the facile and low-cost preparation of high-performance of nano-p-CuO/n-T-ZnOw composite catalysts.

Key words: nano-p-CuO/n-T-ZnOw, composite catalyst, chemical deposition method, UV irradiation, PEG-600, photocatalytic activity

中图分类号:

O643.3

刘红, 刘花蓉, 范希梅. 纳米-p-CuO/n-T-ZnOw复合催化剂的合成及其光催化性能研究[J]. 人工晶体学报, 2022, 51(11): 1958-1966.

LIU Hong, LIU Huarong, FAN Ximei. Synthesis of Nano-p-CuO/n-T-ZnOw Composite Catalysts and Its Photocatalytic Property[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2022, 51(11): 1958-1966.

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