TiO2纳米管光催化还原Cr(Ⅵ)的研究

陈丹; 潘红飞; 辛钢

环境化学

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陈丹, 潘红飞, 辛钢. TiO2纳米管光催化还原Cr(Ⅵ)的研究[J]. 环境化学, 2012, 31(5): 658-662.

引用本文:

陈丹, 潘红飞, 辛钢. TiO2纳米管光催化还原Cr(Ⅵ)的研究[J]. 环境化学, 2012, 31(5): 658-662.

CHEN Dan, PAN Hongfei, XIN Gang. Photocatalytic reduction of Cr(Ⅵ) over TiO2 nanotubes[J]. Environmental Chemistry, 2012, 31(5): 658-662.

Citation:

CHEN Dan, PAN Hongfei, XIN Gang. Photocatalytic reduction of Cr(Ⅵ) over TiO2 nanotubes[J]. Environmental Chemistry, 2012, 31(5): 658-662.

TiO2纳米管光催化还原Cr(Ⅵ)的研究

1.
大连理工大学化工与环境生命学部, 大连, 116024
基金项目:
教育部留学回国人员科研启动基金

中央高校基本科研业务专项资金(DUT10LK30)资助.

Photocatalytic reduction of Cr(Ⅵ) over TiO2 nanotubes

1.
School of Chemistry, Dalian University of Technology, Dalian, 116024, China
Fund Project:

摘要: 以水热法制备TiO2纳米管,采用X射线衍射仪(XRD),高分辨透射电子显微镜(HRTEM)和紫外可见漫反射光谱对其结构和性质进行了表征.研究了光催化还原溶液中Cr(Ⅵ)的反应活性,分别考察了煅烧温度、反应溶液的pH、助催化剂对TiO2纳米管光催化还原的影响.实验结果表明,TiO2-550光催化活性最优;酸性条件有利于Cr(Ⅵ)的还原;NiO和Co2O3复合的TiO2-550光催化活性明显提高.
- TiO₂纳米管 /
- Cr(Ⅵ) /
- 光催化还原
Abstract: In this study TiO2 nanotubes(TiO2NTs) were synthesized using the hydrothermal method, and characterized by XRD, HRTEM and UV-Vis diffuse reflectance spectra. Photocatalytic activity of TiO2 NTs was evaluated by the photocatalytic reduction of Cr(Ⅵ). The dependence of photocatalytic activity of TiO2 NTs on the calcination temperature, pH and cocatalyst loading was studied. The results indicate that TiO2-550 showed the highest photocatalytic activity, and the acidic condition contributes to the reduction of Cr(Ⅵ). In addition, the photocatalytic activity of TiO2-550 was improved by loading with NiO and Co2O3.
- TiO₂ nanotubes /
- Cr(Ⅵ) /
- photocatalyic reduction

[1]	Rengaraj S, Yeon K H, Moon S H. Removal of chromium from water and wastewater by ion exchange resins[J]. Journal of Hazardous Materials, 2001, 87(1/3):273-287
[2]	Eary L K, Rai D. Chromate removal from aqueous wastes by reduction with ferrous ion[J]. Environmental Science and Technology, 1988, 22(8):972-977
[3]	付宏祥,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
[4]	Yang L X, Xiao Y, Luo S L, et al. Photocatalytic reduction of Cr(Ⅵ) on WO₃ doped long TiO₂ nanotube arrays in the presence of citric acid[J]. Applied Catalysis B: Environmental, 2010, 94:142-149
[5]	Ku Y, Jung I L. Photocatalytic reduction of Cr(Ⅵ) in aqueous solutions by UV irradiation with the presence of titanium dioxide[J]. Water Research, 2001, 35(1):135-142
[6]	Lee S M, Lee T W, Choi B J, et al. Treatment of Cr(Ⅵ) and phenol by illuminated TiO₂[J]. Journal Environmental Science Health A, 2003, 38(10):2219-2228
[7]	Rodenas L A G, Weisz A D, Magaz G E, et al. Effect of light on the electrokinetic behavior of TiO₂ particles in contact with Cr(Ⅵ) aqueous solutions[J]. Journal of Colloid and Interface Science, 2000, 230(1):181-185
[8]	Chen H, Shao Y, Xu Z, et al. Effective catalytic reduction of Cr(Ⅵ) over TiO₂ nanotube supported Pd catalysts[J]. Applied Catalysis B: Environmental, 2010, 105(3/4):255-262
[9]	Fujishima A, Honda K. Photolysis of water at a semiconductor electrode[J]. Nature, 1972, 238(5358):37-38
[10]	Kasuga T, Hiramatsu M, Hoson A, et al. Formation of titanium oxide nanatube[J]. Langmuir, 1998, 14(12): 3160-3163
[11]	Arabatzis I M, Stergiopoulos T, Andreeva D, et al. Characterization and photocatalytic of Au/TiO₂ thin films for azo-dye degradation[J]. Journal of Catalysis, 2003, 220(1):127-135
[12]	Sakthivel S, Shankar M V, Palanichamy M, et al. Enhancement of photocatalytic activity by metal deposition: characterisation and photonic efficiency of Pt, Au and Pd deposited on TiO₂ catalyst [J]. Water Research, 2004, 38(13):3001-3008
[13]	Di Y, Wang X C, Antonietti M, et al. Making metal-carbon nitride heterojunctions for improved photocatalytic hydrogen evolution with visible light[J]. Chem Cat Chem, 2010, 2:834-838
[14]	Akurati K K, Vital A, Dellmann J P, et al. Flame-made WO₃/TiO₂ nanoparticles: Relation between surface acidity, structure and photocatalytic activity[J]. Applied Catalysis B: Environmental, 2008,79:53-62
[15]	Chen Y, Crittenden J C, Hackney S, et a1. Preparation of a novel TiO₂- Based p-n junction nanotube photocatalyst[J]. Environmental Science and Technology, 2005, 39(5):1201-1208
[16]	国家环境保护总局,水和废水监测分析方法(第四版) [M].北京:中国环境科学出版社, 2002:346-348
[17]	江芳,郑正,郑寿荣,等.焙烧温度对TiO₂纳米管结构及吸附性能的影响[J]. 环境化学,2008,27(6):731-735
[18]	Chen S F, Zhang S J, Liu W, et al. Preparation and activity evaluation of p-n junction photocatlyst NiO/TiO₂[J]. Journal of Hazardous Materials, 2008, 155(1/ 2):320-326

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TiO2纳米管光催化还原Cr(Ⅵ)的研究

1. 大连理工大学化工与环境生命学部, 大连, 116024

收稿日期: 2011-09-21

基金项目:

教育部留学回国人员科研启动基金

中央高校基本科研业务专项资金(DUT10LK30)资助.

关键词:

摘要: 以水热法制备TiO2纳米管,采用X射线衍射仪(XRD),高分辨透射电子显微镜(HRTEM)和紫外可见漫反射光谱对其结构和性质进行了表征.研究了光催化还原溶液中Cr(Ⅵ)的反应活性,分别考察了煅烧温度、反应溶液的pH、助催化剂对TiO2纳米管光催化还原的影响.实验结果表明,TiO2-550光催化活性最优;酸性条件有利于Cr(Ⅵ)的还原;NiO和Co2O3复合的TiO2-550光催化活性明显提高.

English Abstract

Photocatalytic reduction of Cr(Ⅵ) over TiO2 nanotubes

1. School of Chemistry, Dalian University of Technology, Dalian, 116024, China

Received Date: 2011-09-21

Fund Project:

Keywords:

Abstract: In this study TiO2 nanotubes(TiO2NTs) were synthesized using the hydrothermal method, and characterized by XRD, HRTEM and UV-Vis diffuse reflectance spectra. Photocatalytic activity of TiO2 NTs was evaluated by the photocatalytic reduction of Cr(Ⅵ). The dependence of photocatalytic activity of TiO2 NTs on the calcination temperature, pH and cocatalyst loading was studied. The results indicate that TiO2-550 showed the highest photocatalytic activity, and the acidic condition contributes to the reduction of Cr(Ⅵ). In addition, the photocatalytic activity of TiO2-550 was improved by loading with NiO and Co2O3.

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TiO2纳米管光催化还原Cr(Ⅵ)的研究

Photocatalytic reduction of Cr(Ⅵ) over TiO2 nanotubes

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TiO2纳米管光催化还原Cr(Ⅵ)的研究

English Abstract

Photocatalytic reduction of Cr(Ⅵ) over TiO2 nanotubes

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