半导体复合CdS/TiO2催化剂改性及冷冻-光催化组合方法应用的初步研究

doi:10.7517/j.issn.1674-0475.2008.05.417

影像科学与光化学 ›› 2008, Vol. 26 ›› Issue (5): 417-424.DOI: 10.7517/j.issn.1674-0475.2008.05.417

半导体复合CdS/TiO₂催化剂改性及冷冻-光催化组合方法应用的初步研究

费学宁, 刘晓平, 李莹, 杜国银

天津城市建设学院, 环境与市政工程系, 天津300384

收稿日期:2007-12-03 修回日期:2008-04-02 出版日期:2008-09-23 发布日期:2008-09-23

Modified of Compound Semiconductor CdS/TiO₂ and Wastewater Treatment by Combined Freeze and Photocatalysis

FEI Xue-ning, LIU Xiao-ping, LI Ying, DU Guo-yin

Department of Environmental and Municipal Engineering, Tianjin Institute of Urban Construction, Tianjin 300384, P. R. China

Received:2007-12-03 Revised:2008-04-02 Online:2008-09-23 Published:2008-09-23

摘要/Abstract

摘要： 采用溶胶-凝胶法制备多孔氧化钛,并耦合CdS,制备多孔耦合CdS/TiO₂催化剂.煅烧温度为700℃,CdS掺杂比例为3%时,催化剂性能较优.以太阳光为光源,考查了溴氨酸初始浓度对其降解效果的影响,并采用冷冻-光催化组合方法对较高浓度的溴氨酸废水的处理进行了初步研究.浓度为500 mg/L的溴氨酸模拟废水(其中氯化钠质量浓度为500 mg/L)经冷冻后,当成冰率为70%时,体系中冰层的Na⁺含量、总有机碳(TOC)和吸光度分别由209.88 mg/L,208.90 mg/L和8.120降至19.06 mg/L,24.80 mg/L和0.638.使用多孔耦合催化剂对该冰层融水光降解,光照6 h,褪色率和TOC去除率分别达到100%和87.04%.

关键词: 二氧化钛, 光催化, 冷冻

Abstract: Porous coupling CdS/TiO₂ photocatalyst was prepared by coupling CdS with porous TiO₂ by a sol-gel process.Preliminary research suggested that the optimal calcining temperature is 700 ℃,and CdS doped proportion is 3%.Irradiated by sunlight,the effect of initial concentration of the bromamine acid on the degradation using photocatalytic was discussed.Moreover,pilot study on the treatment of wastewater with higher concentration of bromamine acid by combined freeze and photocatalysis was processed.After freezing,the wastewater with 500 mg/L bromamine acid and 500 mg/L sodium chloride was purified.When 70% of wastewater was frozen,the content of Na⁺,total organic carbon(TOC) and chroma of melted ice is decreased from 209.88 mg/L,208.90 mg/L and 8.120 to 19.06 mg/L,24.80 mg/L and 0.638,respectively.Then the melted water was degradated by porous coupling CdS/TiO₂ photocatalyst under sunlight.After 6 hours,the removal rate of chroma and total organic carbon reached 100% and 87.04%,respectively.

Key words: titanium dioxide, photocatalysis, freeze

中图分类号:

费学宁, 刘晓平, 李莹, 杜国银. 半导体复合CdS/TiO₂催化剂改性及冷冻-光催化组合方法应用的初步研究[J]. 影像科学与光化学, 2008, 26(5): 417-424.

FEI Xue-ning, LIU Xiao-ping, LI Ying, DU Guo-yin. Modified of Compound Semiconductor CdS/TiO₂ and Wastewater Treatment by Combined Freeze and Photocatalysis[J]. Imaging Science and Photochemistry, 2008, 26(5): 417-424.

参考文献

[1] 高濂,郑珊,张青红.纳米氧化钛光催化材料及应用[M].北京:化学工业出版社,2002.GAO L,ZHENG S,ZHANG Q H.Nanosized Titanium Diox-ide Photocatalysed Material and Its Application[M].Beijing:Publishing Company of Chemical Industry,2002.
[2] 乌志明,邓小川.盐水冷冻淡化研究[J].无机盐工业,2001-3,33(2):6-8.Wu Z M,Deng X C.Desalting of brine solution by freeze-concentration[J].Inorganic Chemical Industry,2001,33(2):6-8.
[3] Gao W,Smith D W.Ice ntcleation in industrial wastewater[J].Cold Regions Science and Technology,1999,29:121-133.
[4] Gao W,Smith D W.Freezing temperatures of freely falling industrial wastewater droplets[J].Cold Regions Engineering,2000,14(3):101-118.
[5] Cao W,Smith D W.Treatment of pulp mill and oil sands industrial wastewaters by the partial spray freezing process[J].Water Research,2004,38:579-584.
[6] 陈晓慧,柳丽芬,杨凤林,等.CdS/TiO₂光催化去除水体中氨氮的研究[J].感光科学与光化学(影像科学与光化学),2007,25(2):89-101.Chen X H,Liu L F,Yang F L,et al.Removing ammonia nitrogen from water using CdS/TiO₂ photocatalyst[J].Photographic Science and Photochemistry(Imaging Science and Photochemistry),2007,25(2):89-101.
[7] 何都良,王传海,夏明芳,等.纳米TiO₂的晶相控制及其光催化活性研究[J].环境科学与技术,2004,27(6):6-8.HE D L,WANG C H,XIA M F,et al.Studis on crystal transformation and photocatalytic activities of nano-sized TiO₂[J].Environmental Science and technology,2004,27(6):6-8.
[8] 陈曦,陈孝云.溶胶一凝胶制备工艺对纳米TiO₂光催化活性的影响[J].科学技术与工程,2006,6(18):2813-2813.Chen X,Chen X Y.TiO₂photocatalyst prepared by sol-gel procees:optimization of the preparation parameters[J].Science Technology and Engineering,2006,6(18):2813-2813.
[9] 张青红,高濂,孙静.氧化硅对二氧化钛纳米晶转变和晶粒生长的抑制作用[J].无机材料学报,2002,17(3):415-420.Zhang Q H,Gao L,Son J.Retarding effect of silica on the growth and anatase-to-ruti] e transformation of TiO₂ nanocrystals[J].Journal of Inorganic Materials,2002,17(3):415-420.
[10] 周秀文,朱祖良,赵君科,等.TiO₂/CdS复合光催化剂的制备及结构研究[J].材料导报,2005,19(Ⅳ):71-73.Zhou X W,Zhu Z L,ghao J K,et al.Studies on preparation and structure of TiO₂/CdS coupled photocatalyst[J].Materials Review,2005,19(IV):71-73.
[11] 周秀文,朱祖良,赵君科,等.TiO₂/Cds复合半导体光催化剂降解甲基橙的实验研究[J].环境污染治理技术与设备,2006,7(1):106-109.Zhou X W,Zhu Z L,Zhao J K,et al.Research on TiO₂/CdS coupled semiconductor photocatalytic degradation of methyl orange in wastewater[J].Techniques and Equipment for Environmental Pollution Control,2006,7(1):106-109.
[12] 费学宁,杜国银,王金方,等.冷冻分凝原理处理溴氨酸水溶液方法初步研究[J].化工进展,2007,26(8):1001-1005.Fei X N,Du G Y,Wang J F,et al.Freeze-dephlegmation:application to bromamine acid aqueous solution purification[J].Chemical Industry and Engineering Progress,2007,26(8):1001-1005.

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半导体复合CdS/TiO₂催化剂改性及冷冻-光催化组合方法应用的初步研究

Modified of Compound Semiconductor CdS/TiO₂ and Wastewater Treatment by Combined Freeze and Photocatalysis

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