三波长分光光度法研究纳米TiO2对Hg2+的光催化还原效果

doi:10.7517/j.issn.1674-0475.2007.03.230

影像科学与光化学 ›› 2007, Vol. 25 ›› Issue (3): 230-237.DOI: 10.7517/j.issn.1674-0475.2007.03.230

• 研究简报 • 上一篇

三波长分光光度法研究纳米TiO₂对Hg²⁺的光催化还原效果

陆薇薇¹, 陈国松¹, 张红漫¹, 张之翼¹, 陆小华²

1. 南京工业大学, 应用化学系, 江苏, 南京, 210009;
2. 南京工业大学, 化学化工学院, 江苏, 南京, 210009

收稿日期:2006-11-19 修回日期:2007-01-30 出版日期:2007-05-23 发布日期:2007-05-23
通讯作者: 陈国松,副教授,E-mail:gschen3303@sohu.com.
基金资助:
国家杰出青年科学基金(29925616);国家自然科学基金(20246002,20236010);江苏省2003年环保科技计划项目(2003025)资助

Study on the Effect of Photocatalytic Reduction of Hg²⁺ by Using Nano TiO₂ with Three-Wavelength Spectrophotometry

LU Wei-wei¹, CHEN Guo-song¹, ZHANG Hong-man¹, ZHANG Zhi-yi¹, LU Xiao-hua²

1. Department of Applied Chemistry, Nanjing University of Technology, Nanjing 210009, Jiangsu, P. R. China;
2. College of Chemical Engineering, Nanjing University of Technology, Nanjing 210009, Jiangsu, P. R. China

Received:2006-11-19 Revised:2007-01-30 Online:2007-05-23 Published:2007-05-23

摘要/Abstract

摘要： 利用自制微型纳米TiO₂光催化反应器对不同初始浓度的Hg²⁺溶液进行光催化还原实验,利用Hg²⁺-硫氰酸盐-罗丹明B离子缔合物分光光度法测定溶液中剩余Hg²⁺的浓度,表征Hg²⁺的光催化还原效果.采用三波长分光光度法有效地消除了TiO₂悬浮体系中的浑浊对测定的干扰.讨论了光催化还原的最佳条件及其在消除工业废水中有毒物质Hg(Ⅱ)方面的应用.结果表明:纳米TiO₂对低浓度Hg²⁺溶液光催化还原效果显著,还原率可达90%以上,并且可以大幅降低工业废水中Hg(Ⅱ)的浓度.

关键词: Hg²⁺, 纳米TiO₂, 光催化, 微型反应器, 三波长法

Abstract: A self-made micro-reactor of nano-TiO₂ photocatalysis was used to carry out photocatalytic reduction experiments of Hg (Ⅱ) with different initial concentrations.Then the residual Hg (Ⅱ) in the solutions was determined by using spectrophotometry with Thiocyanate-Rhodamine B-Polyvinyl Alcohol.Considering the influence of TiO₂ suspension system on the absorbency,three-wavelengths spectrophotometry was proposed to eliminate the interference of TiO₂.The optimum conditions and effect of photocatalytic reduction of Hg²⁺ by TiO₂ as well as its application in removing toxic Hg (Ⅱ) in industrial waste water samples were investigated.It was showed that photocatalytic reduction of Hg²⁺ by TiO₂ had a remarkable effect on low concentrations of mercury and the reduction rate was over 90%.The method could dramatically reduced the content of toxic Hg (Ⅱ) in industrial waste water samples.

Key words: Hg²⁺, nano-TiO₂, photocatalysis, micro-reactor, three-wavelength spectrophotometry

中图分类号:

陆薇薇, 陈国松, 张红漫, 张之翼, 陆小华. 三波长分光光度法研究纳米TiO₂对Hg²⁺的光催化还原效果[J]. 影像科学与光化学, 2007, 25(3): 230-237.

LU Wei-wei, CHEN Guo-song, ZHANG Hong-man, ZHANG Zhi-yi, LU Xiao-hua. Study on the Effect of Photocatalytic Reduction of Hg²⁺ by Using Nano TiO₂ with Three-Wavelength Spectrophotometry[J]. Imaging Science and Photochemistry, 2007, 25(3): 230-237.

参考文献

[1] 孙巍,晏乃强,贾金平.载溴活性炭去除烟气中的单质汞[J].中国环境科学,2006,26(3):257-261.Sun W,Yan N Q,Jia J P.Removal of elemental mercury in flue gas by brominated activated carbon[J].China Environmental Science,2006,26(3):257-261.
[2] 张鹏宇,曾汉才,张柳.活化处理的活性炭吸附汞的试验研究[J].电力科学与工程,2004,2:1-3.Zhang P Y,Zeng H C,Zhang L.Experiments on mercury adsorption by activated Carbon[J].Electric Power Science and Engineering,2004,2:1-3.
[3] 叶一芳.应用离子交换树脂法处理低浓度含汞废水[J].环境污染与防治,1989,11(3):34-36.Ye Y F.Ion-exchanger separation applied in mercuric wastewater disposal[J].Environmental Pollution & Control,1989,11(3):34-36.
[4] 王木林,任俊梅.离子交换树脂光度法测定水中微量汞[J].分析试验室,1990,9(2):34-35.Wang M L,Ren J M.Ion-exchanger separation-colorimetric of determination trace Hg(Ⅱ) in potable water[J].Chinese Journal of Analysis Laboratory,1990,9(2):34-35.
[5] 张长水,等.正十六胺为载体的乳状液膜迁移分离汞Ⅱ[J].化学研究与应用,2003,15(2):227-228.Zhang C S,et al.Separation study of mercury using hexadecylaminea mobile carrierhenan uniuersity of through an emulsion liquid membrane[J].Chemical Research and Application,2003,15(2):227-228.
[6] 杨莉,吴光辉,周韦.TiO₂薄膜光催化还原Hg²⁺的研究[J].感光科学与光化学,2005,23(6):460-466.Yang L,Wu G H,Zhou W.Study on photographic reduction Hg²⁺ by TiO₂ film[J].Photographic Science and Photochemistry,2005,23 (6):460-466.
[7] 吴光辉,杨莉,周韦.TiO₂光催化还原Hg(Ⅱ)[J].南昌航空工业学院学报(自然科学版),2004,18(2):49-52.Wu G H,Yang L,Zhou W.The photocatalytic reduction of TiO₂ on Hg(Ⅱ)[J].Journal of Nanchang Institute of Aeronautical Technology(Natural Science),2004,18(2):49-52.
[8] Lau L D,Rodriguez R,Henery S et al.Environ.photoreduction of mercuric salt solutions at high pH[J].Sci.Technol.,1998,32:670-676.
[9] 胡育筑.化学计量学简明教程[M].北京:中国医药科技出版社,1997.151.Hu Y Z.Chemometrics Consise Tutorial[M].Beijing:Chinese Medical Science and Technology Press,1997.151.
[10] Yamada T,Yoshinaga Y,Hirayama,K et al.The determination of plasma hemoglobin by use of direct spectrophotometry with three wavelength[J].Igsku Kensa,1991,40(2):146-152.
[11] 冯胜,张治芬.硫氰酸盐-罗丹明B-聚乙烯醇光度法在水相中测定微量汞[J].分析化学,1991,19(1):86-88.Feng S,Zhang Z F.Spectrophotometric determination of trace amounts of mercury in aqueous solution with Thiocyanate-rhodamine B-Polyvinyl Alcohol[J].Chinese Journal of Analytical Chemistry,1991,19(1):86-88.
[12] Heller A.Abstracts of the First International Conference on TiO₂ Photocatalytic Purification and Treatment of Water and Air[M].London,Ontario,Canada:NRC Research Press,1992.17-23.
[13] 付宏详,吕功煊,李树本.Cr(Ⅵ)离子在TiO₂表面的光催化还原机理研究[J].化学物理学报,1999,12(1):112-116.Fu H X,Lü G X,Li S B.Mechanism study on photocatalytic reduction of Cr(Ⅵ) ion on the surface of TiO₂[J].Chinese Journal of Chemical Physics,1999,12(1):112-116.
[14] 付宏祥.重金属离子的光催化还原研究进展[J].感光科学与光化学,1995,13(4):325-333.Fu H X.An overview of photocatalytic reduction of heavy metal ions[J].Photographic Science and Photochenistry,1995,13(4):325-333.
[15] 刘守新,刘承林.金属离子的光催化研究进展[J].化学通报,2004,(12):898-894.Liu S X,Liu C L.An overview of photocatalytic removal of metal ions[J].Chemistry,2004,(12):898-894.
[16] Horanyi G.Investigation of specific adsorption of sulfate ions on powdered TiO₂[J].Colloid and Interfacial Science,2003,261:580-583.

三波长分光光度法研究纳米TiO₂对Hg²⁺的光催化还原效果

Study on the Effect of Photocatalytic Reduction of Hg²⁺ by Using Nano TiO₂ with Three-Wavelength Spectrophotometry

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	李玥, 李红英, 常玉雪, 周宏艳, 于翔. MoS₂/TiO₂纳米管阵列的一步沉积法制备及光电性能研究[J]. 影像科学与光化学, 2018, 36(4): 331-339.
[2]	李玥, 宋育泽, 陶雁忠, 高风仙, 汤宁. CdS/TiO₂复合纳米网的制备及光催化性能研究[J]. 影像科学与光化学, 2018, 36(3): 275-282.
[3]	李玲, 杜云舒, 王璇, 韩建, 王传义. 甲醛气体在ZnO表面光降解的机理研究[J]. 影像科学与光化学, 2018, 36(2): 171-177.
[4]	吴世康. 光催化中表面等离子体与半导体间的电子转移与能量转移[J]. 影像科学与光化学, 2018, 36(1): 1-13.
[5]	Samuel Lascio, 籍海峰. 磷纳米材料的光学、光电子和光催化应用[J]. 影像科学与光化学, 2017, 35(5): 587-602.
[6]	张庆宝, 刘强. 可见光催化需氧氧化在有机合成中的应用[J]. 影像科学与光化学, 2017, 35(5): 614-625.
[7]	桂梦茜, 俞洋, 朱诚逸, 刘宏芳, 王锋. 基于金属钴配合物的均相光催化还原二氧化碳研究进展[J]. 影像科学与光化学, 2017, 35(5): 649-657.
[8]	彭成云, 陈勇. 苝衍生物光催化氧化硫醚的研究[J]. 影像科学与光化学, 2017, 35(5): 675-685.
[9]	聂坤, 杨汉培, 孙慧华, 崔素珍, 吴俊明. 新型Fe掺杂钙钛矿型KMgF₃光催化剂制备及性能[J]. 影像科学与光化学, 2017, 35(1): 61-69.
[10]	朱哲欣, 叶美英. 光催化微反应器中水样光催化降解及Cd²⁺在线检测[J]. 影像科学与光化学, 2016, 34(5): 444-451.
[11]	张亚婷, 李可可, 任绍昭, 王黛玉, 周安宁, 邱介山. 金属改性煤基石墨烯复合材料的制备及其光催化性能[J]. 影像科学与光化学, 2016, 34(5): 475-481.
[12]	王勐, 夏静, 朱丹丹, 王磊, 孟祥敏. Fe掺杂ZnO空心微球的制备与光催化性能[J]. 影像科学与光化学, 2016, 34(3): 245-251.
[13]	蒋伟, 武祥. ZnS微米花的水热合成及光催化性质研究[J]. 影像科学与光化学, 2016, 34(3): 252-256.
[14]	黄奔, 李玄泽, 王磊, 夏静, 朱丹丹, 孟祥敏. 钼网衬底上大面积硅纳米线的制备及其光催化性能研究[J]. 影像科学与光化学, 2016, 34(3): 257-264.
[15]	王静, 张慧慧, 高雨季, 叶晨, 冯科, 陈彬, 张丽萍, 佟振合, 吴骊珠. 光还原制备石墨烯-硫化钼RGO-MoS_x产氢催化剂[J]. 影像科学与光化学, 2015, 33(6): 461-467.