| HCO3-和PW12O403-对TiO2光催化活性的影响 |
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| 引用本文： | 胡军文,童三伏,张渊明,李明玉.HCO3-和PW12O403-对TiO2光催化活性的影响[J].广东化工,2006,33(4):48-50,45. |
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| 作者姓名： | 胡军文 童三伏 张渊明 李明玉 |
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| 作者单位： | 暨南大学,化学系,广东,广州,510632;暨南大学,环境工程系,广东,广州,510632 |
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| 摘 要： | H_3PW_(12)O_(40)(HPW)作为电子受体,有利于TiO_2光催化反应,浓度为0．06 mmol／L时甲基橙光催化降解速率是未加入电子受体的2．7倍。另一方面,HCO_3的存在显著降低了光催化反应速率,在HCO_3]为0．025 mol/L时,k为0．03742 min~(-1),比未加入HCO~3的速率降低了48％。讨论了两种离子对反应速率的影响。
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| 关 键 词： | 光催化 二氧化钛 甲基橙 磷钨酸 |
| 收稿时间： | 2006-02-13 |
| 修稿时间： | 2006-02-13 |
Effects of HCO3- and PW12O403- on TiO2 Photocatalytic Activity |
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| Hu Junwen,Tong Sanfu,Zhang Yuanming,Li Mingyu.Effects of HCO3- and PW12O403- on TiO2 Photocatalytic Activity[J].Guangdong Chemical Industry,2006,33(4):48-50,45. |
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| Authors: | Hu Junwen Tong Sanfu Zhang Yuanming Li Mingyu |
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| Abstract: | Phosphotungstic acid, an electron acceptor, is in favour of titania photocatalysis, the photodegradation rate of methyl orange(MO) with the addition of H_3PW_(12)O_(40) (HPW, 0.06 mmol/L) was 2.7 times of that without HPW. However, HCO_3~- could reduce the photodegradation rate, the pseudo-first-order degradation rate (k) constant with the addition of HCO_3~- (0.025 mmol/L) was 0.03742 min~(-1), which fell 48% than that of without HCO_3~-. The effects of these two anions on photocatalysis were discussed. |
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| Keywords: | photocatalysis titania methyl orange phosphotungstic acid |
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