首页|Fabrication of La,Ce co-doped ZnO nanorods for improving photodegradation of methylene blue

Fabrication of La,Ce co-doped ZnO nanorods for improving photodegradation of methylene blue

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La,Ce co-doped ZnO nanorods(ZnLC)were synthesized through a one-step solvothermal route.The photocatalysts were characterized by X-ray diffraction,Raman spectroscopy,field-emission scanning electron microscopy,energy dispersive X-ray,transmission electron microscopy,UV-vis diffuse reflec-tance spectroscopy and photoluminescence spectroscopy.The La and Ce doping enhanced the visible light absorption ability of ZnLC and a red shift was detected for ZnLC.Under simulated solar light irra-diation,the ZnO doped with 3 at％La and 1 at％Ce(ZnLC1)degrades methylene blue(MB)more effec-tively than those of pure ZnO,La-doped ZnO(ZnL)and commercially available ZnO.The improved photocatalytic performance of ZnLC1 can be attributed to the high charge separation efficiency as demonstrated by the photoluminescence spectra.Additionally,the photocatalytic experiments reveal that several parameters have their own impact on the MB degradation.Using a variety of radical scav-engers,it is discovered that superoxide anion radical plays a crucial role in the degradation of MB.The ZnLC1 is also reused several times without noticeable decrease of photoactivity,indicating that it has a substantial potential for environmental remediation applications.

ZnOLanthanumCeriumCo-dopingPhotodegradationRare earths

Erfan Hakim Azmal Zaid、Jin-Chung Sin、Sze-Mun Lam、Abdul Rahman Mohamed

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School of Chemical Engineering,Universiti Sains Malaysia(USM),14300,Nibong Tebal,Penang,Malaysia

College of Environmental Science and Engineering,Guilin University of Technology,Guilin,541004,China

Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control,Guilin University of Technology,Guilin,541004,China

Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area,Guilin University of Technology,Guilin,541004,China

Faculty of Engineering and Green Technology,Universiti Tunku Abdul Rahman,Jalan Universiti,Bandar Barat,31900,Kampar,Perak,Malaysia

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Malaysia Research University Network(MRUN) from Ministry of Higher Education(Malaysia

304/PJKIMIA/656501/K145

2024

10.1016/j.jre.2023.02.001

稀土学报(英文版)
中国稀土学会

稀土学报(英文版)

CSTPCDEI
影响因子：1.3
ISSN：1002-0721
年,卷(期)：2024.42(1)
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