| Hg2+离子的光催化还原的研究 |
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| 引用本文： | 吴光辉,周韦,钟劲茅,杨莉.Hg2+离子的光催化还原的研究[J].环境科学与技术,2005,28(2):15-16. |
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| 作者姓名： | 吴光辉 周韦 钟劲茅 杨莉 |
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| 作者单位： | 南昌航空工业学院环境与化学工程系,南昌,330034;南昌航空工业学院环境与化学工程系,南昌,330034;南昌航空工业学院环境与化学工程系,南昌,330034;南昌航空工业学院环境与化学工程系,南昌,330034 |
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| 摘 要： | 研究了反应时间、pH值、d 半乳糖对锐钛型TiO2 光催化还原Hg2+离子(HgCl2 水溶液)影响,结果表明: 反应20min时,还原率达到最高,随后略下降;还原率随着pH值的降低而降低;d 半乳糖能有效促进 Hg2+离子的光催化还原,还原率一直上升, 不会出现最高点;加入量超过一定值(16mmol/L)后,促进效果几乎相同,反应90min时,还原率达100%。
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| 关 键 词： | 锐钛型TiO2 光催化还原 Hg+2离子 |
| 文章编号： | 1003-6504(2005)02-0015-02 |
| 修稿时间： | 2003年10月10 |
Study on Photocatalytic Reduction of Hg2+ Cation |
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| WU Guang-hui,ZHOU Wei,ZHONG Jin-mao,YANG Li.Study on Photocatalytic Reduction of Hg2+ Cation[J].Environmental Science and Technology,2005,28(2):15-16. |
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| Authors: | WU Guang-hui ZHOU Wei ZHONG Jin-mao YANG Li |
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| Abstract: | The photocatalytic reduction of Hg~(2+) cation (aqueous solution of mercury chloride) using anatase TiO_2 was studied as a function of irradiation time, pH of the solution, d-galactose. Results showed that photoreduction efficiency of Hg~(2+) cation reached the highest value in 20min illumination, and then decreased a little; the photoreduction decreased with the decrease of pH value. Adding d-galactose enhanced photoreduction of Hg~(2+\} cation and made photoreduction efficiency increased continuously, after adding amount of d-galactose exceeded 16mmol/L, different adding amount had similar effective results, they all led to a complete photoreduction in about 90min illumination. |
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| Keywords: | anatase TiO_2 photocatalytic reduction Hg~(2+) cation |
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