| 微波辅助离子液体中锌-铁共掺杂纳米TiO_2光催化剂的制备及其光催化活性 |
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| 引用本文： | 张桂琴,毕先钧.微波辅助离子液体中锌-铁共掺杂纳米TiO_2光催化剂的制备及其光催化活性[J].化学研究,2011(5):55-62. |
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| 作者姓名： | 张桂琴 毕先钧 |
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| 作者单位： | 云南师范大学化学化工学院;云南农业职业技术学院畜牧兽医系; |
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| 基金项目： | 国家自然科学基金资助项目(20663007) |
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| 摘 要： | 在Bmim]PF_6离子液体介质中,用微波于燥的方法制备了锌-铁共掺杂纳米TiO_2(TiO_2-Zn-Fe)光催化剂;并以甲基橙为模拟污染物,紫外灯为光源,考察了离子液体加入量、锌-铁掺杂量、微波干燥功率、微波干燥时间、煅烧温度、煅烧时间等因素对TiO_2-Zn-Fe光催化活性的影响.结果表明,掺杂物质硝酸锌和硝酸铁与钛酸丁酯的物质的量比分别为n(Zn)/n(Ti)=0.25%和n(Fe)/n(Ti)=0.005%时,在家用微波炉中于210W功率下干燥17.5min,再在高温箱式电阻炉中于540℃下煅烧处理1.5h,得到的TiO_2-Zn-Fe光催化剂的活性明显优于单一掺杂的TiO_2-Zn或TiO_2-Fe以及未掺杂的纯TiO_2,在紫外光照60min及太阳光照3h条件下相应的甲基橙的降解率分别达99.8%和99.6%.
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| 关 键 词： | 离子液体 微波辅助 锌-铁共掺杂 二氧化钛 光催化剂 光催化活性 |
Preparation of zinc and iron co-doped nano-titanium dioxide photocatalyst under microwave irradiation in ionic liquid and its photocatalytic activity |
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| ZHANG Gui-qin,BI Xian-jun.Preparation of zinc and iron co-doped nano-titanium dioxide photocatalyst under microwave irradiation in ionic liquid and its photocatalytic activity[J].Chemical Research,2011(5):55-62. |
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| Authors: | ZHANG Gui-qin BI Xian-jun |
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| Institution: | ZHANG Gui-qin~(1,2),BI Xian-jun~(1*) (1.Institute of Chemistry and Chemical Engineering,Yunnan Normal University,Kunming 650500,Yunnan,China,2.Department of Husbandry and Veterinary,Yunnan Agriculture Vocational and Technical College,Kunming 650031.Yunnan,China ) |
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| Abstract: | Zn-Fe co-doped nano-TiO_2photocatalysts(TiO_2-Zn-Fe) were prepared by making use of microwave drying method inBmim]PF_6 ionic liquid.The influence of ionic liquid dosage, Zn/Ti and Fe/Ti molar ratio,microwave drying power and drying time,calcination temperature and calcination time on the photocatalytic activities of TiO_2-Zn-Fe were investigated using methyl orange as simulated pollutant and ultraviolet lamp as light source.Results indicate that Zn-Fe co-doped nano-TiO_2 obtained at a Zn/Ti molar ratio of... |
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| Keywords: | ionic liquids microwave assistance Zn-Fe co-doping titanium dioxide photocatalyst photocatalytic activity |
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