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Fast Photodegradation of Malachite Green using Nano-ZnO on Ceramic MgAl Carbonate Layered Double Hydroxides Support
Rui-qiang Yan,Gui-hua Liu,Qing-feng Wang,Wei Liu,Chun-lin Song
Author NameAffiliationE-mail
Rui-qiang Yan Department of Materials Engineering, Taizhou University, Taizhou 318000, China yanrq@tzc.edu.cn 
Gui-hua Liu Department of Materials Engineering, Taizhou University, Taizhou 318000, China  
Qing-feng Wang Department of Materials Engineering, Taizhou University, Taizhou 318000, China  
Wei Liu CAS Key Lab Mat Energy Convers, Department of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China  
Chun-lin Song Faculty of Materials and Energy, Southwest University, Chongqing 400715, China chunlinsong@swu.edu.cn 
Abstract:
The nanopowders of Mg-Al carbonate layered double hydroxides (MgAl-LDH) were prepared via coprecipitation process. ZnO nanoparticles were homogeneously coated on the ceramic MgAl-LDH surface. After calcination at 500 ℃ for 4 h, X-ray diffraction and scanning electron microscopy were employed to investigate the crystal structure and morphology, respectively. It was demonstrated that ZnO nanoparticles were successfully prepared on ceramic MgAl-LDH support. The obtained nano-ZnO photocatalyst showed a high pho-tocatalytic degradation of malachite green. The enhanced photocatalytic property can be attributed to both high photocatalytic activity of ZnO and good adsorption behavior of ceramic MgAl-LDH, in which the aky structure of MgAl-LDH plays an important role.
Key words:  Degradation  Photocatalyst  ZnO  Coprecipitation
FundProject:The work is supported by the Key Disciplines of Ap-plied Chemistry of Zhejiang Province (Taizhou Univer-sity), the National Natural Science Foundation of China (No.51403149), and the Fundamental Research Funds for the Central Universities, China (No.SWU113045 and No.XDJK2015C002).
孔雀石绿在镁铝水滑石负载纳米氧化锌上的快速光降解
闫瑞强,刘贵花,王庆丰,刘卫,宋春林
摘要:
用共沉淀法制备Mg-Al水滑石纳米粉,ZnO纳米颗粒均相地覆盖在Mg-Al水滑石表面. 在500 ℃煅烧4 h后,采用XRD和SEM分析晶体结构和形貌. 研究表明在Mg-Al水滑石表面成功地制备了纳米ZnO. 所获得的纳米ZnO光催化剂对孔雀石绿表现出高的光催化降解性能. 归因于ZnO表面的高光催化活性以及Mg-Al水滑石较好的吸附性能,其中Mg-Al水滑石层片结构起了重要作用.
关键词:  ZnO  光催化  降解
DOI:10.1063/1674-0068/29/cjcp1505104
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