[1]张小强,尹立红,浦跃朴.纳米TiO2的分散及光催化活性[J].东南大学学报(自然科学版),2011,41(6):1319-1324.[doi:10.3969/j.issn.1001-0505.2011.06.035]
 Zhang Xiaoqiang,Yin Lihong,Pu Yuepu.Dispersion and photocatalytic activity of titanium dioxide nanoparticles[J].Journal of Southeast University (Natural Science Edition),2011,41(6):1319-1324.[doi:10.3969/j.issn.1001-0505.2011.06.035]
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纳米TiO2的分散及光催化活性()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
41
期数:
2011年第6期
页码:
1319-1324
栏目:
材料科学与工程
出版日期:
2011-11-20

文章信息/Info

Title:
Dispersion and photocatalytic activity of titanium dioxide nanoparticles
作者:
张小强尹立红浦跃朴
(东南大学公共卫生学院,南京210009)
(东南大学环境医学工程教育部重点实验室,南京210009)
Author(s):
Zhang XiaoqiangYin LihongPu Yuepu
(School of Public Health, Southeast University, Nanjing 210009, China)
(Key Laboratory of Environmental Medicine Engineering of Ministry of Education, Southeast University, Nanjing 210009, China)
关键词:
TiO2 分散 光催化
Keywords:
titanium dioxide dispersion photocatalysis
分类号:
TB383
DOI:
10.3969/j.issn.1001-0505.2011.06.035
摘要:
为了研究纳米TiO2的分散及其紫外光催化活性,采用不同的分散剂、用量、pH条件及不同的超声波工作参数制备纳米TiO2分散体系.采用动态光散射法分析纳米颗粒的分散状态,采用分光光度法分析不同分散体系的纳米TiO2在紫外光照射下对亚甲基蓝降解率.采用100% FBS作为分散剂可以获得最小粒径的TiO2分散体系且有最大的光催化活性,使用时以制备终质量浓度为0.50 mg/mL (1:100)或1.0 mg/mL (1:50)的TiO2分散体系为最佳使用量.在该实验条件下不同pH值对纳米TiO2分散水平和光催化活性均未产生显著性影响.超声波33 W振荡5 min即可明显提高纳米TiO2分散水平和光催化活性.结果表明:良好的分散状态对纳米TiO2的光催化活性具有促进作用.
Abstract:
To investigate the dispersion state and photocatalytic activity of TiO2nanoparticles under ultraviolet irradiation, a variety of approaches for suspension of TiO2 nanoparticles were conducted with different dispersion stabilizers, dosage, pH value and various working parameter of ultrasound vibration. The average size of dispersed TiO2 nanoparticles was measured by dynamic light scattering device. The photocatalytic activity for degradation of methylene blue was determined by detecting the absorbance with the help of UV-visible spectrophotometry. The results show that the optimum dispersion stabilizer is 100% fetal bovine serum (FBS) which can provide TiO2 nanoparticles dispersion with the smallest particle size and the highest photocatalytic activity. The TiO2 nanoparticles dispersion prepared by 100% FBS is well-dispersed at the concentration of 0. 50 mg/mL (1:100) or 1. 0 mg/mL (1:50). In our experiments the dispersion state and photocatalytic activity of TiO2 nanoparticles are not influenced by different pH values. The dispersion state and photocatalytic activity of TiO2 nanoparticles are promoted sufficiently with ultrasound energy of 33 W for 5 min. It is shown that the photocatalytic activity of titanium dioxide nanoparticles is promoted by the well-dispersed state.

参考文献/References:

[1] Fujishima A, Honda K. Electrochemical photolysis of water at a semiconductor electrode[J]. Nature, 1972, 238(5358): 37-38.
[2] Sun B, Reddy E P, Smirniotis P G. Visible light Cr(Ⅵ) reduction and organic chemical oxidation by TiO2 photocatalysis[J]. Environ Sci Technol, 2005, 39(16): 6251-6259.
[3] Mansouri L, Bousselmi L, Ghrabi A. Degradation of recalcitrant organic contaminants by solar photocatalysis[J]. Water Sci Technol, 2007, 55(12):119-125.
[4] Zalazar C S, Satuf M L, Alfano O M, et al. Comparison of H2O2/UV and heterogeneous photocatalytic processes for the degradation of dichloroacetic acid in water[J]. Environ Sci Technol, 2008, 42(16):6198-6204.
[5] Torres-Palma R A, Nieto J I, Combet E, et al. An innovative ultrasound, Fe2+ and TiO2 photoassisted process for bisphenol a mineralization[J]. Water Res, 2010, 44(7):2245-2252.
[6] Goel M, Chovelon J M, Ferronato C, et al. The remediation of wastewater containing 4-chlorophenol using integrated photocatalytic and biological treatment[J]. J Photochem Photobiol B, 2010, 98(1):1-6.
[7] Asahi R, Morikawa T, Ohwaki T, et al. Visible-light photocatalysis in nitrogen-doped titanium oxides[J]. Science, 2001, 293(5528): 269-271.
[8] Khan S U, Al-Shahry M, Ingler W B Jr. Efficient photochemical water splitting by a chemically modified n-TiO2[J]. Science, 2002, 297(5590): 2243-2245.
[9] Linsebigler A L, Lu G, Yates J T Jr. Photocatalysis on TiO2 surfaces: principles, mechanisms, and selected results[J]. Chem Rev, 1995, 95(3): 735-758.
[10] Lai Y K, Sun L, Chen Y C, et al. Effects of the structure of TiO2nanotube array on ti substrate on its photocatalytic activity[J]. J Electrochem Soc, 2006, 153(7): 123-127.
[11] Wang J, Zhou G, Chen C, et al. Acute toxicity and biodistribution of different sized titanium dioxide particles in mice after oral administration[J]. Toxicol Lett, 2007, 168(2): 176-185.
[12] Lam C W, James J T, McCluskey R, et al. Pulmonary toxicity of single-wall carbon nanotubes in mice 7 and 90 days after intratracheal instillation[J]. Toxicol Sci, 2004, 77(1): 126-134.
[13] Sauter C, Emin M A, Schuchmann H P, et al. Influence of hydrostatic pressure and sound amplitude on the ultrasound induced dispersion and de-agglomeration of nanoparticles[J]. Ultrason Sonochem, 2008, 15(4):517-523.
[14] Bittmann B, Haupert F, Schlarb A K. Preparation of TiO2/epoxy nanocomposites by ultrasonic dispersion and their structure property relationship[J]. Ultrason Sonochem, 2011, 18(1):120-126.
[15] Nguyen V S, Rouxel D, Hadji R, et al. Effect of ultrasonication and dispersion stability on the cluster size of alumina nanoscale particles in aqueous solutions[J]. Ultrason Sonochem, 2011, 18(1):382-388.

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备注/Memo

备注/Memo:
作者简介: 张小强(1968—),男,博士,副教授; 浦跃朴(联系人),男,博士,教授,博士生导师,yppu@seu.edu.cn.
基金项目: 国家重点基础研究发展计划(973计划)资助项目(2011CB933404)、江苏省生物材料与器件重点实验室开放基金资助项目(2010LBMD05).
引文格式: 张小强,尹立红,浦跃朴.纳米TiO2的分散及光催化活性[J].东南大学学报:自然科学版,2011,41(6):1319-1324. [doi:10.3969/j.issn.1001-0505.2011.06.035]
更新日期/Last Update: 2011-11-20