Please wait a minute...
Acta Phys. -Chim. Sin.  2007, Vol. 23 Issue (01): 16-20    DOI: 10.3866/PKU.WHXB20070104
Article     
Photocatalytic Degradation of Organic Pollutants on TiO2/Bentonite
LI Jing-Yi;SIQIN Gao-Wa;LIU Li-Na
Institute of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, P. R. China
Download:   PDF(246KB) Export: BibTeX | EndNote (RIS)      

Abstract  A series of TiO2/bentonite catalysts (with different loadings and calcined at different temperatures) were prepared by sol-gel method. The prepared catalysts were employed to photocatalytically degrade organic dye Rhodamine B (RhB) under UV irradiation. The capabilities to degrade organic pollutants were studied by detecting the change of their absorbance and chemical oxygen demand (COD) under UV light irradiation. The results showed that they had a better catalytic reactivity when the loading was 50% and calcination temperature was 400 ℃ (Ti400). Their minerialization activity was slightly less than P25, when UV light irradiation time was 4 h, COD changes of P25 and TiO2/bentonite calcinated at 400 ℃ were 99.7% and 97.0%, respectively. But they were easier to be reused. Ti400 catalyst was employed to degrade RhB, and its photocatalytic activity was kept almost the same after recycling 7 times. The catalysts were further characterized by XRD, BET, and UV-Vis DRS. The experimental results showed that they would have a better activity when their BET surface area was larger.

Key wordsTiO2/bentonite catalysts      Rhodamine B      Photocatalytic degradation      XRD      BET      UV-Vis DRS     
Received: 29 May 2006      Published: 08 January 2007
Corresponding Authors: LI Jing-Yi     E-mail: lijingyicn@yahoo.com
Cite this article:

LI Jing-Yi;SIQIN Gao-Wa;LIU Li-Na. Photocatalytic Degradation of Organic Pollutants on TiO2/Bentonite. Acta Phys. -Chim. Sin., 2007, 23(01): 16-20.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB20070104     OR     http://www.whxb.pku.edu.cn/Y2007/V23/I01/16

[1] Chun-Dong SONG,Jing ZHANG,Ying GAO,Yuan-Yuan LU,Fang-Fang WANG. Synthesis Direct Z-Scheme CuS-WO3 Photocatalysts Based on an Element-Reaction Route and Their Photocatalytic Activity[J]. Acta Phys. -Chim. Sin., 2017, 33(9): 1891-1897.
[2] Wei-Wei KONG,Shuang GUO,Yong-Min ZHANG,Xue-Feng LIU. Redox-Responsive Interfacial Properties of Se-Containing Sulfobetaine Surfactant[J]. Acta Phys. -Chim. Sin., 2017, 33(6): 1205-1213.
[3] Yun-Long ZHANG,Yu-Zhi ZHANG,Li-Xin SONG,Yun-Feng GUO,Ling-Nan WU,Tao ZHANG. Synthesis and Photocatalytic Performance of Ink Slab-Like ZnO/Graphene Composites[J]. Acta Phys. -Chim. Sin., 2017, 33(11): 2284-2292.
[4] Wei WU,Dan-Dan LIU,Zhi-Cheng XU,Qing-Tao GONG,Jian-Bin HUANG,Lei ZHANG,Lu ZHANG. Adsorption and Wettability of Branched Betaine and Cationic Surfactants on a Poly(methyl methacrylate) Surface[J]. Acta Phys. -Chim. Sin., 2016, 32(5): 1214-1220.
[5] Bin. HUANG,Yu. DAI,Xin-Xin. BAN,Wei. JIANG,Zhao-Hang. ZHANG,Kai-Yong. SUN,Bao-Ping. LIN,Yue-Ming. SUN. ThermallycFluorescence Materials Based on Triphenylamine/Diphenyl Sulfone[J]. Acta Phys. -Chim. Sin., 2015, 31(8): 1621-1628.
[6] La-Ga. TONG,Jin-Yan. LIU,Cen-Chen. WANG,Hua. RONG,Wei. LI. Preparation of Micro/Nano ZnO Pompons and Their Catalytic Activity for the Solar Degradation of Organic Dyes[J]. Acta Phys. -Chim. Sin., 2015, 31(8): 1615-1620.
[7] ZHANG Jun-Wei, ZHOU Jun-Gang, Lü Hong, HUANG Qiang. Molecular Dynamics Simulation of Active-Sites of Retaining and Inverting β-Xylosidases[J]. Acta Phys. -Chim. Sin., 2015, 31(6): 1169-1178.
[8] QIAN Hai-Cheng, KANWAL Shahid, JIA Qing-Zhu, WANG Qiang, JI Hui-Fen, ZHU Zhi-Chen, XIA Shu-Qian, MA Pei-Sheng. Norm Index-Based Quantitative Structure-Activity Relationship to Predict β-Cyclodextrin Complex Binding Constants[J]. Acta Phys. -Chim. Sin., 2015, 31(5): 893-898.
[9] HU Long-Xing, XU Dan-Dan, ZOU Lian-Pei, YUAN Hang, HU Xing. Heterogeneous Fenton Oxidation of Refractory Dye Rhodamine B in Aqueous Solution with Mesoporous Fe/SBA-15[J]. Acta Phys. -Chim. Sin., 2015, 31(4): 771-782.
[10] Jia-Han. ZHANG,Gui-Bao. GUO,Sheng-Li. AN,Yan. HAO,Dong. ZHANG,Kai-Bo. YAN. Synthesis and Properties of Proton Exchange Membranes via Single-Step Grafting PSBMA onto PVDF Modified by TMAH[J]. Acta Phys. -Chim. Sin., 2015, 31(10): 1905-1913.
[11] ZHOU Han-Yang, YU Tian-Lin, AO Yin-Yong, PENG Jing, ZHAI Mao-Lin. Crystal Structure and Radiation Stability of Sr(NO3)2·DCH18C6 Complex[J]. Acta Phys. -Chim. Sin., 2014, 30(8): 1581-1586.
[12] GU Yong-Qin, WANG Bo, GU Xiu-Quan, ZHAO Yu-Long, QIANG Ying-Huai, ZHANG Shuang, ZHU Lei. Preparation and Characterization of Co3(PO4)2/Ag3PO4 Nanocomposites for Visible-Light Photocatalysis[J]. Acta Phys. -Chim. Sin., 2014, 30(10): 1909-1915.
[13] DONG Li-Li, WANG Ying-Yong, TONG Xi-Li, JIN Guo-Qiang, GUO Xiang-Yun. Synthesis and Characterization of Boron-Doped SiC for Visible Light Driven Hydrogen Production[J]. Acta Phys. -Chim. Sin., 2014, 30(1): 135-140.
[14] XING Wei-Nan, NI Liang, YAN Xue-Sheng, LIU Xin-Lin, LUO Ying-Ying, LU Zi-Yang, YAN Yong-Sheng, HUO Peng-Wei. Preparation of C@CdS/Halloysite Nanotube Composite Photocatalyst Using One-Step Pyrolytic Method and Its Photodegradation Properties[J]. Acta Phys. -Chim. Sin., 2014, 30(1): 141-149.
[15] YANG Cheng-Xu, JU Jing, ZHAO Shi-Di, XU Hang-Yu, LIU Meng, LIAO Fu-Hui, LI Guo-Bao, LIN Jian-Hua. Synthesis of β-FeSe by Salt-Flux Method under Air Atmosphere[J]. Acta Phys. -Chim. Sin., 2013, 29(12): 2661-2666.