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掺杂过渡金属离子的TiO2复合纳米粒子光催化剂--罗丹明B的光催化降解
引用本文:王艳芹,张莉,程虎民,马季铭.掺杂过渡金属离子的TiO2复合纳米粒子光催化剂--罗丹明B的光催化降解[J].高等学校化学学报,2000,21(6):958-960.
作者姓名:王艳芹  张莉  程虎民  马季铭
作者单位:北京大学化学与分子工程学院,北京,100871
基金项目:中国科学院资助项目,高等学校博士学科点专项科研项目,29673003,,,
摘    要:在悬浮液体系中进行的半导体光催化降解反应中,催化剂的导带电子(或被俘获到半导体表面的电子)还原电解质溶液的O2分子(受主)是反应的决速步骤,O2分子接受电子后形成的超氧自由基O2-或羟基自由基HO·具有很强的氧化能力,能将污梁物氧化降解13].

关 键 词:TiO2复合纳米粒子  光催化降解  罗丹明B
修稿时间::

The Photocatalytic Properties of Transition Metal Ion-doped TiO2 Nanoparticles--Photocatalytic Degradation of Rhodamine B
WANG Yan-Qin,ZHANG Li,CHENG Hu-Min,MA Ji-Ming.The Photocatalytic Properties of Transition Metal Ion-doped TiO2 Nanoparticles--Photocatalytic Degradation of Rhodamine B[J].Chemical Research In Chinese Universities,2000,21(6):958-960.
Authors:WANG Yan-Qin  ZHANG Li  CHENG Hu-Min  MA Ji-Ming
Abstract:The transition metal ion doped TiO 2 nanoparticles were prepared with hydrothermal method, and the effects of doping different metal ions on the ability of TiO 2 in photocatalyzing degradation of rhodamine B(RB) were studied. The results showed that the doping of Fe 3+ , Co 2+ , Ni 2+ and Cr 3+ in TiO 2 nanoparticles made the photocatalytic efficiency of the TiO 2 particles reduce and the higher the initial content of Fe 3+ , the lower the ability of TiO 2 in photocatalyzing the degradation of RB. But the doping of Zn 2+ and Cd 2+ , especially Zn 2+ , made the photocatalytic efficiency of the TiO 2 particles enhance, showing a great increase of the rate constant( k ) and the initial reaction rate( r ini ).
Keywords:TiO  2 composite nanoparticles  Photocatalystic degradation  Rhodamine B
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