Fe掺杂的Ag-ZnO纳米复合材料的合成及光催化性能

doi:10.11896/cldb.201906006

材料导报

2019, Vol. 33

Issue (6): 941-946 https://doi.org/10.11896/cldb.201906006

无机非金属及其复合材料

Fe掺杂的Ag-ZnO纳米复合材料的合成及光催化性能

张嘉羲, 袁欢, 刘禹彤, 陈雨, 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 and Photocatalytic Properties of Fe Doped Ag-ZnO Nanocomposites

ZHANG Jiaxi, YUAN Huan, LIU Yutong, CHEN Yu, XU Ming

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

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摘要采用高分子网络凝胶工艺制备了Fe掺杂的Ag-ZnO系列纳米粉体。通过XRD、SEM、XPS、PL和UV-vis对所制备样品的微结构和光学性质进行了表征,随后以甲基橙和亚甲基蓝为模拟污染物,分别在模拟紫外光和模拟太阳光下对所制备的样品进行光催化测试。结果表明,Fe掺杂后,ZnO晶粒尺寸有所减小,且纳米Ag颗粒的分散性得到改善。样品中的Fe以Fe²⁺和Fe³⁺形式共存,随着Fe掺杂浓度的增加,ZnO晶格中的铁离子由+2价向+3价转变,导致PL光谱中蓝光发射峰强度降低。光催化测试结果表明样品Zn_0.96Fe_0.01Ag_0.03O具有最好的光催化活性,结合样品的微结构和光学性质对其光催化机理进行了讨论。

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关键词: Fe掺杂Ag-ZnO 高分子网络凝胶法光催化

Abstract: Fe doped Ag-ZnO nanopowders were synthesized by polymer-network gel method. The microstructures and optical properties of the as-prepared samples were characterized by XRD, SEM, XPS, PL and UV-vis techniques, the photocatalytic activity of these samples was studied by analyzing the degradation of methyl orange and methylene blue under ultraviolet light and simulated sunlight, respectively. The results of XRD and SEM show that Fe doping improves the dispersion of Ag nanoparticles while reducing the grain size of ZnO. The XPS spectrum shows the coexistence of divalent and trivalent Fe, and with the increase of the Fe doping concentration, the Fe ion in the ZnO lattice changes from divalent to trivalent, resulting in the reduced intensity of blue emission peak revealed in the PL spectra. Among all samples, Zn_0.96Fe_0.01Ag_0.03O exhibits the highest photocatalytic activity. Combined with the microstructure and optical properties, we discussed its photocatalytic mechanism.

Key words: Fe doped Ag-ZnO polymer-network gel method photocatalytic

发布日期: 2019-04-03

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(CX2018SZ98)

作者简介: 张嘉羲,西南民族大学材料学硕士研究生,主要从事氧化物功能材料的研究。徐明,西南民族大学教授。

引用本文:

张嘉羲, 袁欢, 刘禹彤, 陈雨, 徐明. Fe掺杂的Ag-ZnO纳米复合材料的合成及光催化性能[J]. 材料导报, 2019, 33(6): 941-946.
ZHANG Jiaxi, YUAN Huan, LIU Yutong, CHEN Yu, XU Ming. Synthesis and Photocatalytic Properties of Fe Doped Ag-ZnO Nanocomposites. Materials Reports, 2019, 33(6): 941-946.

链接本文:

http://www.mater-rep.com/CN/10.11896/cldb.201906006 或 http://www.mater-rep.com/CN/Y2019/V33/I6/941

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