Ag沉积的ZnO∶Cu纳米颗粒的制备及高效光催化研究

doi:10.11896/cldb.18100226

材料导报

2020, Vol. 34

Issue (4): 4013-4019 https://doi.org/10.11896/cldb.18100226

无机非金属及其复合材料

Ag沉积的ZnO∶Cu纳米颗粒的制备及高效光催化研究

罗凯怡, 袁欢, 刘禹彤, 张嘉羲, 张秋平, 王笑乙, 胡文宇, 李靖, 徐明

西南民族大学电气信息工程学院,信息材料四川省高校重点实验室,成都 610041

Synthesis of Ag Deposited ZnO∶Cu Nanoparticles and Study of Their High Photocatalytic Performance

LUO Kaiyi, YUAN Huan, LIU Yutong, ZHANG Jiaxi, ZHANG Qiuping, WANG Xiaoyi, HU Wenyu, LI Jing, XU Ming

College of Electrical & Information Engineering & Key Laboratory of Information Materials of Sichuan Province, Southwest Minzu University, Chengdu 610041, China

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摘要采用高分子网络凝胶法制备了Ag沉积的ZnO∶Cu纳米颗粒。XRD和SEM结果表明,Cu掺入后ZnO纳米颗粒的晶粒尺寸有所减小,但颗粒分散性得到改善。XPS谱的分析表明,Cu在样品中以Cu²⁺和Cu⁺的形式共存。结合PL光谱分析,认为Cu²⁺和Cu⁺间的能级跃迁是引起蓝光发射的重要因素。UV-vis光谱显示掺铜明显提高了Ag-ZnO复合体系对可见光的吸收。分别在模拟太阳光和紫外光下降解亚甲基蓝(MB),测试样品的光催化性能。分析认为,Cu离子与Ag/ZnO异质结之间的协同作用能促进光催化反应的进行,与掺5%(摩尔分数,下同)Cu的Ag-ZnO纳米颗粒相比,微量掺杂0.2%Cu的Ag-ZnO样品在形貌、光学性能等方面更具优势,因此表现出更优异的光催化活性。

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	罗凯怡
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	张嘉羲
	张秋平
	王笑乙
	胡文宇
	李靖
	徐明

关键词: ZnO∶Cu纳米颗粒 Ag/ZnO异质结高分子网络凝胶光催化

Abstract: Ag deposited ZnO∶Cu nanoparticles were prepared by polymer network gel method. XRD and SEM results revealed that the grain size of ZnO nanoparticles decreased but the dispersion of the particles was improved after Cu doping. XPS showed that Cu ions existed in the form of Cu²⁺ and Cu⁺ in samples. In conjunction with PL spectrum, the energy level transition between Cu⁺ and Cu²⁺ is considered to be an important factor in blue light emission. UV-vis spectrum evidenced that Cu doping significantly enhanced the absorption of visible light by Ag-ZnO composite system. The photocatalytic performance of the samples was tested by degrading methylene blue (MB) under the simulated sunlight and ultraviolet light respectively. Analysis suggests that the synergistic effect between Cu ions and Ag/ZnO heterojunction can promote the photocatalytic rea-ction. Compared to Ag-ZnO nanoparticles with 5mol% Cu, Ag-ZnO sample with trace doping of 0.2mol% Cu exhibited better photocatalytic activity due to its advantages in morphology, optical properties and other aspects.

Key words: Cu nanoparticles Ag/ZnO heterojunction polymer network gel method photocatalysis

出版日期: 2020-02-25 发布日期: 2020-01-15

ZTFLH:

O614.24+

基金资助: 四川省学术带头人培养基金(26727502);四川省科技厅应用基础研究重点项目(2017JY0349);西南民族大学研究生创新型科研项目(CX2019SZ09)

通讯作者: hsuming_2001@aliyun.com

作者简介: 罗凯怡,西南民族大学电子功能材料学科硕士研究生,主要从事氧化物功能材料的研究;徐明,西南民族大学教授。2000年7月毕业于中国科学院物理研究所,获凝聚态物理专业博士学位,先后在奥地利、比利时、新加坡从事博士后研究。已在物理或材料的国际主流刊物上发表SCI学术论文100多篇,授权7项中国专利。其中以第一或通讯作者身份完成的部分工作已被写入3部国际权威的专业工具书和13部国际学术专著。

引用本文:

罗凯怡, 袁欢, 刘禹彤, 张嘉羲, 张秋平, 王笑乙, 胡文宇, 李靖, 徐明. Ag沉积的ZnO∶Cu纳米颗粒的制备及高效光催化研究[J]. 材料导报, 2020, 34(4): 4013-4019.
LUO Kaiyi, YUAN Huan, LIU Yutong, ZHANG Jiaxi, ZHANG Qiuping, WANG Xiaoyi, HU Wenyu, LI Jing, XU Ming. Synthesis of Ag Deposited ZnO∶Cu Nanoparticles and Study of Their High Photocatalytic Performance. Materials Reports, 2020, 34(4): 4013-4019.

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http://www.mater-rep.com/CN/10.11896/cldb.18100226 或 http://www.mater-rep.com/CN/Y2020/V34/I4/4013

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