Au@α-Fe2O3纳米棒的制备及光催化性能

doi:10.11896/cldb.22050040

材料导报

2024, Vol. 38

Issue (3): 22050040-6 https://doi.org/10.11896/cldb.22050040

无机非金属及其复合材料

Au@α-Fe₂O₃纳米棒的制备及光催化性能

林青^1,*, 黎水平², 缪志鹏¹, 丁忆¹, 梁栋¹, 王昭¹, 张小娟¹

1 金陵科技学院材料工程学院,南京 211169
2 扬州大学土木科学与工程学院,江苏扬州 225127

Fabrication and Photocatalytic Properties of Au@α-Fe₂O₃ Nanorods

LIN Qing^1,*, LI Shuiping², MIAO Zhipeng¹, DING Yi¹, LIANG Dong¹, WANG Zhao¹, ZHANG Xiaojuan¹

1 School of Materials Technology, Jinling Institute of Technology, Nanjing 211169, China
2 College of Civil Science and Engineering, Yangzhou University, Yangzhou 225127, Jiangsu, China

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摘要本工作通过水热法与磁控溅射法结合成功构建了表面均匀沉积纳米Au粒子的α-Fe₂O₃(Au@α-Fe₂O₃)纳米棒,纳米Au粒子的负载量和形态分别由磁控溅射时间和热处理温度调控。在沉积5.1%的纳米Au粒子后,因纳米Au的表面等离子体共振(SPR)效应,Au@α-Fe₂O₃纳米棒在550 nm处出现了一个新的吸收峰,其带隙由2.20 eV变窄至1.95 eV。Au@α-Fe₂O₃纳米棒的荧光强度和电化学阻抗显著降低,光电流从0.27 μA·cm^-2增大至0.45 μA·cm^-2。纳米Au粒子既拓宽了Au@α-Fe₂O₃纳米棒的可见光吸收性能,又抑制了电子-空穴对的复合。与α-Fe₂O₃纳米棒相比,Au@α-Fe₂O₃纳米棒的光催化性能变得更加稳定,Au@α-Fe₂O₃纳米棒的光催化效率提高约一倍。

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	林青
	黎水平
	缪志鹏
	丁忆
	梁栋
	王昭
	张小娟

关键词: 纳米金 α-Fe₂O₃ 纳米棒光催化性能

Abstract: Au nanoparticles deposited α-Fe₂O₃ (Au@α-Fe₂O₃) nanorods with a well-defined structure were fabricated by the hydrothermal method and the magnetron sputtering method. The deposition contents and morphology of Au nanoparticles were regulated by the magnetron sputtering time and the heat treatment temperature, respectively. After deposited 5.1% Au, Au@α-Fe₂O₃ nanorods show a new absorption peak at 550 nm in the UV-Vis spectrum as the results of the surface plasmon resonances (SPR) of Au nanoparticles, and their bandgap narrows from 2.20 to 1.95 eV. Moreover, the fluorescence intensity and electrochemical impedance of Au@α-Fe₂O₃ nanorods decrease significantly, while the photocurrent increases from 0.27 to 0.45 μA·cm^-2. Au nanoparticles extend the visible-light absorption performance and inhibit the recombination of electron-hole pairs of Au@α-Fe₂O₃ nanorods. The photocatalytic property of Au@α-Fe₂O₃ nanorods becomes more stable, and the photocatalytic efficiency of Au@α-Fe₂O₃ nanorods is about 1 time higher than that of α-Fe₂O₃ nanorods.

Key words: Au nanoparticles α-Fe₂O₃ nanorods photocatalytic property

出版日期: 2024-02-10 发布日期: 2024-02-19

ZTFLH:

O613.6

基金资助: 国家自然科学基金青年基金项目(51902145);江苏省自然学科基金面上项目(BK20191112)

通讯作者: *林青,金陵科技学院材料工程学院副教授、硕士研究生导师,入选江苏省“333高层次人才培养工程”。2011年6月,在南京工业大学获得材料学专业工学博士学位;2011年7月～2011年11月,温州医学院助理研究员;2011年12月至今,金陵科技学院材料工程学院先后任讲师、副教授。以第一作者在国内外期刊上发表论文30余篇,申请国家发明专利12项,其中授权7项,转化2项。主要研究方向为纳米材料、功能材料等,主持完成江苏省自然科学基金面上项目和江苏省高校自然科学基金面上项目各1项。lnqing@jit.edu.cn

引用本文:

林青, 黎水平, 缪志鹏, 丁忆, 梁栋, 王昭, 张小娟. Au@α-Fe₂O₃纳米棒的制备及光催化性能[J]. 材料导报, 2024, 38(3): 22050040-6.
LIN Qing, LI Shuiping, MIAO Zhipeng, DING Yi, LIANG Dong, WANG Zhao, ZHANG Xiaojuan. Fabrication and Photocatalytic Properties of Au@α-Fe₂O₃ Nanorods. Materials Reports, 2024, 38(3): 22050040-6.

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http://www.mater-rep.com/CN/10.11896/cldb.22050040 或 http://www.mater-rep.com/CN/Y2024/V38/I3/22050040

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