多卤素离子掺杂对苯二甲酸铋的制备及可见光降解污染物
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- 英文论文题名：Preparation of Ternary Halide Anions Doped Bismuth Terephthalate and visible light degradation of organic pollutants
- 论文作者：赵新筠
- 英文论文作者：ZHAO xinyun ; School of Chemistry and Materials Science ; South-Central University for Nationalities
- 年：2016
- 作者机构：中南民族大学化学与材料科学学院;
- 论文关键词：多卤素离子掺杂对苯二甲酸铋 ; 可见光降解 ; 有机污染物
- 英文论文关键词：Ternary halide anions doped bismuth terephthalate ; Visible light degradation ; Organic pollutants
- 会议召开时间：2016-09-23
- 会议录名称：中部四省化学化工学会2016年学术年会摘要集
- 语种：中文
- 分类号：O643.36
- 学会代码：JXHX
- 会议名称：中部四省化学化工学会2016年学术年会
- 会议地点：中国江西南昌
- 主办单位：中国化学会湖北代表处
- 学会名称：江西省化学化工学会
- 页数：1
- 文件大小：140k
- 原文格式：D
- 会议级别：地方
摘要
四种不同的卤素离子(F~-,Cl~-,Br~-,I~-)的三组分和四组分组合掺杂进对苯二甲酸铋中得到了五种催化剂。即T1催化剂(包含F~-,Cl~-,Br~-);T_2催化剂(F~-,Cl~-,I~-);T_3催化剂(F~-,Br~-,I~-);T_4催化剂(Cl~-,Br~-,I~-);T_5催化剂(F~-,Cl~-,Br~-,I~-)。对这五种催化剂进行染料罗丹明B和亚甲基蓝的可见光降解研究。结果发现含有F~-,Cl~-,Br~-的T1催化剂表现出很好的降解20 mg/L罗丹明B和亚甲基蓝的活性。降解速率常数分别为0.41min~(-1)和0.009min~(-1)。高活性的原因归结于规整的片状形貌,大的比表面积以及有效的光生电子和空穴的分离。活性物种捕捉实验证明空穴(h~+)和超氧自由基(·O_2~-)是可见光降解染料过程中的主要活性物种。
Five catalysts were prepared by doping ternary halide anions into bismuth terephthalate from the combination of three or four halide anions among different halide anions(F~-,Cl~-,Br~-,I~-).They were labelled as T_1(including F~-,Cl~-,Br~-),T_2(including F~-,Cl~-,I~-),T_3(including F~-,Br~-,I~-),T_4(including Cl~-,Br~-,I~-) and T_5(including F~-,Cl~-,Br~-,I~-).Their visible light photodegradation activities were evaluated by degrading RhB and MB with the concentration of 20 mg/L.T1 catalyst exhibits that highest degradation activities with the reaction rate constants 0.41min~(-1) for Rh B and 0.009 min~(-1) for MB.The highest degradation efficiency was ascribed to regular lamellar morphology,larger specific surface area,highly effective separation of photogeneration electrons and holes.
Five catalysts were prepared by doping ternary halide anions into bismuth terephthalate from the combination of three or four halide anions among different halide anions(F~-,Cl~-,Br~-,I~-).They were labelled as T_1(including F~-,Cl~-,Br~-),T_2(including F~-,Cl~-,I~-),T_3(including F~-,Br~-,I~-),T_4(including Cl~-,Br~-,I~-) and T_5(including F~-,Cl~-,Br~-,I~-).Their visible light photodegradation activities were evaluated by degrading RhB and MB with the concentration of 20 mg/L.T1 catalyst exhibits that highest degradation activities with the reaction rate constants 0.41min~(-1) for Rh B and 0.009 min~(-1) for MB.The highest degradation efficiency was ascribed to regular lamellar morphology,larger specific surface area,highly effective separation of photogeneration electrons and holes.
引文
[1]Zhao,X.,Xiong,X.,Chen,X.,et.al.Synthesis of halide anion-doped bismuth terephthalate hybrids for organic pollutant removal.Appl.Organometal.Chem.,2016.30(5):304-310.