Effect of Pd-modification on photocatalytic H2 evolution over Cd0.8Zn0.2S/SiO2 from glycerol solution

XU Jin; WANG Xi-tao; FAN Can-can; QIAO Jing

Volume 41 Issue 03

Mar. 2013

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Article Navigation > Journal of Fuel Chemistry and Technology > 2013 > 41(03): 323-327

XU Jin, WANG Xi-tao, FAN Can-can, QIAO Jing. Effect of Pd-modification on photocatalytic H2 evolution over Cd0.8Zn0.2S/SiO2 from glycerol solution[J]. Journal of Fuel Chemistry and Technology, 2013, 41(03): 323-327.

Citation:

XU Jin, WANG Xi-tao, FAN Can-can, QIAO Jing. Effect of Pd-modification on photocatalytic H₂ evolution over Cd_0.8Zn_0.2S/SiO₂ from glycerol solution[J]. Journal of Fuel Chemistry and Technology, 2013, 41(03): 323-327.

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Effect of Pd-modification on photocatalytic H₂ evolution over Cd_0.8Zn_0.2S/SiO₂ from glycerol solution

1.
Institute of Management, Tianjin University of Technology, Tianjin 300384, China;
2.
College of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
3.
Tianjin Academy of Environmental Sciences, Tianjin 300191, China

Received Date: 2012-08-06
Rev Recd Date: 2012-10-27
Publish Date: 2013-03-30

Abstract

Abstract

A series of Pd/Cd_0.8Zn_0.2S/SiO₂ photocatalysts were prepared by incipient wet impregnation. The catalysts were characterized by XRD, H₂-TPR, XPS, and UV-vis DRS and used in the photocatalytic evolution of H₂ from glycerol and water mixture; the effects of Pd loading on the surface structure, photo absorption and H₂ evolution rate were investigated. The results showed that the chemical interaction between ZnS and CdS results in the formation of Cd_0.8Zn_0.2S solid solution on the surface of SiO₂; after the modification with Pd, the light absorption region of Cd_0.8Zn_0.2S/SiO₂ is expanded and the photo absorption efficiency is enhanced obviously. The loading of Pd exhibits significant influence on the rate of photocatalytic H₂ evolution; over 0.5%Pd/Cd_0.8Zn_0.2S/SiO₂ with a Pd loading of 0.5%, the maximum hydrogen production rates under UV light irradiation and under solar-simulated light irradiation reach 831 μmol·h^-1 and 153 μmol·h^-1, respectively, which are almost 4 times and 2 times higher than those obtained over unmodified Cd_0.8Zn_0.2S/SiO₂ under UV and solar-simulated light irradiation, respectively. The superior photocatalytic performance of Pd/Cd_0.8Zn_0.2S/SiO₂ can be partly related with the improvement of photo absorption, the enhancement in chemisorption and activation of H₂O and the increase in separation efficiency of photo induced electron-hole arising from the Pd modification.
- Pd-modified,
- Cd_0.8Zn_0.2S solid solution,
- photocatalysis,
- glycerol solution,
- H₂ production

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References(14)

References

SHEN S, ZHAO L, GUO L. Zn_mIn₂S_3+m (m=1-5, integer):A new series of visible-light-driven photocatalysts for splitting water to hydrogen[J]. Int J Hydrogen Energy, 2010, 35(19):10148-10154.

YU JG, SHI L. One-pot hydrothermal synthesis and enhanced photocatalytic activity of trifluoroacetic acid modified TiO₂ hollow microspheres[J]. J Mol Catal A, 2010, 326(1/2): 8-14.

SHEN S, GUO L, CHEN X, REN F, MAO S S. Effect of Ag₂S on solar-driven photocatalytic hydrogen evolution of nanostructured CdS[J]. Int J Hydrogen Energy, 2010, 35(13): 7110-7115.

MAEDA K, DOMEN K. New non-oxide photocatalysts designed for overall water splitting under visible light[J]. J Phys Chem C, 2007, 111(22): 7851-7861.

KUDO A. Recent progress in the development of visible lightdriven powdered photocatalysts for water splitting[J]. Int J Hydrogen Energy, 2007, 32(14):2673-2678.

KOCA A, SAHIN M. Photocatalytic hydrogen production by direct sun light from sulfide/sulfite solution[J]. Int J Hydrogen Energy, 2002, 27(4): 363-367

XU X, LU R, ZHAO X, XU S, LEI X, EVANS D G. Fabrication and photocatalytic performance of a Zn_xCd_1-xS solid solution prepared by sulfuration of a single layered double hydroxide precursor[J]. Appl Catal B, 2011, 102(1/2): 147-156.

VILLORIA J A, NAVARRO YERGA R M, AL-ZAHRANI S M, FIERRO J L G. Photocatalytic hydrogen production on Cd_1-_xZn_xS solid solutions under visible light: Influence of thermal treatment[J]. Ind Eng Chem Res, 2010, 49(15): 6854-6861.

彭绍琴, 黄亚辉, 安然, 李越湘. 复合光催化剂CdS-Pt/TiO₂低温制备及可见光制氢性能[J]. 功能材料, 2011, 9(42): 1669-1672. (PENG Shao-qing, HUANG Ya-hui, AN Yan, LI Yue-xiang. Preparation of CdS-Pt/TiO₂ composite photocatalyst by low temperature method and its performance for photocatalytic hydrogen evolution under visible light irradiation[J]. Journal of Functional Materials, 2011, 9(42): 1669-1672.)

周鹏, 赵成坚, 董文平, 吕功煊. 高分子修饰Pt/ZnS-CdS/SiO₂催化剂表面官能团调变与光催化制氢活性关系的研究[J]. 分子催化, 2012, 26(3): 265-274. (ZHOU Peng, ZHAO Chen-jian, DONG Wen-ping, LV Gong-xuan. Studies on photocatalytic hydrogen production relating to the surface functional groups modulation of polymer-modified Pt/ZnS-CdS/SiO₂[J]. Journal of Molecular Catalysis(China), 2012, 26(3): 265-274.)

SANG H X, WANG X T, FAN C C, WANG F. Enhanced photocatalytic H₂ production from glycerol solution over ZnO/ZnS core/shell nanorods prepared by a low temperature route [J]. Int J Hydrogen Energy, 2012, 37(2), 1348-1355.

CELEBI S, ERDAMAR A J. Synthesis and characterization of poly(acrylic acid) stabilized cadmium sulfide quantum dots[J]. J Phys Chem B, 2007, 111(44): 12668-12675.

DESHPANDE A, SHAH P, GHOLAP R S. Interfacial and physico-chemical properties of polymer-supported CdS center dot ZnS nanocomposites and their role in the visible-light mediated photocatalytic splitting of water[J]. J Colloid Interface Sci, 2009, 333(1): 263-268.

李静玲, 陈文哲, 吴波, 黄世震, 林伟, 李世平, 曹小霞, 翁晴, 王敏. 银掺杂TiO₂纳米管制备与性能研究[J]. 功能材料, 2012, 8(43): 953-957. (LI Jing-ling, CHEN Wen-zhe, WU Bo, HUANG Shi-zhen, LIN Wei, LI Shi-ping, CAO Xiao-xia, WENG Qing, WANG Min. Synthesis and characterization of Ag-doped TiO₂ nanotubes[J]. Journal of Functional Materials, 2012, 8(43): 953-957.)

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