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Cr^3+掺杂对ZnGa2O4光催化性能影响的研究
引用本文:刘作涛,彭超,刘云峰,李锋锋,沈毅.Cr^3+掺杂对ZnGa2O4光催化性能影响的研究[J].中国陶瓷,2020(1):18-25.
作者姓名:刘作涛  彭超  刘云峰  李锋锋  沈毅
作者单位:华北理工大学材料科学与工程学院
基金项目:国家自然科学基金项目(51772099,51572069);华北理工大学研究生创新项目(2019S16)。
摘    要:试验以Ga(NO3)3·9H2O、Zn(NO3)2·6H2O、Cr(NO3)3·9H2O、Na3C6H5O7·2H2O为原料,采用水热法制备Cr^3+掺杂ZnGa2O4。通过XRD、TEM对样品的结构和形貌进行表征,通过UV-vis DRS、PL对样品进行光学性能表征,利用紫外-可见光分度计测试罗丹明B的吸光度变化情况对样品进行光催化性能检测。研究掺杂量、煅烧温度、保温时间对ZnGa2O4的影响,试验结果表明,最佳制备条件为:Cr^3+掺杂量1.0%、煅烧温度700℃、保温时间8 h。最佳条件下ZnGa1.99Cr0.01O4降解罗丹明B在60 min降解率可达97%;ZnGa1.99Cr0.01O4产氢量为446.4μmol/g,对比Zn Ga2O4产氢量为184.7μmol/g,产氢量增加。

关 键 词:CR^3+  ZnGa2O4  离子掺杂  光催化

Effect of Cr^3+ Doping on Photocatalytic Performance of ZnGa2O4
LIU Zuotao,PENG Chao,LIU Yunfeng,LI Fengfeng,SHEN Yi.Effect of Cr^3+ Doping on Photocatalytic Performance of ZnGa2O4[J].China Ceramics,2020(1):18-25.
Authors:LIU Zuotao  PENG Chao  LIU Yunfeng  LI Fengfeng  SHEN Yi
Affiliation:(School of Material Science and Engineering,North China University of Science and Technology,Key Laboratory of Inorganic Nonmetallic Materials Hebei Province,Key Laboratory of Environment Functional Materials of Tangshan City,Tangshan 063210,China)
Abstract:In this experiment, Cr^3+ doped ZnGa2O4 was prepared by hydrothermal method using Ga(NO3)3·9H2O,Zn(NO3)2·6H2O,Cr(NO3)3·9H2O,Na3C6H5O7·2H2O as raw materials. The structure and morphology of the samples were characterized by XRD and TEM. The optical properties of the samples were characterized by UV-vis DRS and PL. The absorbance changes of Rhodamine B were tested by UVVis spectrometer. The effects of doping amount, calcination temperature and holding time on ZnGa2O4 were studied. The experimental results show that the optimum preparation conditions with Cr^3+ doping amount of 1.0%, calcination temperature of 700 ℃, and holding time of 8 h. Under the optimal conditions, the degradation rate of rhodamine B in ZnGa1.99Cr0.01O4 was up to 97% in 60 min;the hydrogen production in ZnGa1.99Cr0.01O4 was 446.4 μmol/g, and the hydrogen production in ZnGa2O4 was increased with value of 184.7 μmol/g.
Keywords:Cr^3+  ZnGa2O4  Ion doping  Photocatalysis
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