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Stable and Efficient Homogeneous Photocatalytic H2 Evolution Based on Water Soluble Pyrenetetrasulfonic Acid Functionalized Platinum Nanocomposites

  1. Dr. Mingshan Zhu1,2,
  2. Zhi Li1,
  3. Prof. Dr. Yukou Du1,
  4. Dr. Zhigang Mou1,
  5. Prof. Dr. Ping Yang1,*

Article first published online: 9 NOV 2011

DOI: 10.1002/cctc.201100253

Issue

ChemCatChem

ChemCatChem

Volume 4, Issue 1, pages 112–117, January 2, 2012

Additional Information

How to Cite

Zhu, M., Li, Z., Du, Y., Mou, Z. and Yang, P. (2012), Stable and Efficient Homogeneous Photocatalytic H2 Evolution Based on Water Soluble Pyrenetetrasulfonic Acid Functionalized Platinum Nanocomposites. ChemCatChem, 4: 112–117. doi: 10.1002/cctc.201100253

Author Information

  1. 1

    College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou,215123 (P.R. China), Fax: (+86) 512-65880089

  2. 2

    CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P.R. China)

*College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou,215123 (P.R. China), Fax: (+86) 512-65880089

Publication History

  1. Issue published online: 27 DEC 2011
  2. Article first published online: 9 NOV 2011
  3. Manuscript Revised: 9 SEP 2011
  4. Manuscript Received: 26 JUL 2011

Funded by

  • National Natural Science Foundation of China. Grant Numbers: 20673075, 50973077, 51073114
  • Natural Science Foundation of Jiangsu Province. Grant Number: BK2010209
  • Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)

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Keywords:

  • electron transfer;
  • hydrogen;
  • nanoparticles;
  • photochemistry;
  • platinum;
  • pyrenetetrasulfonic acid

Abstract

Herein, 1,3,6,8-pyrenetetrasulfonic acid (PTSA) functionalized Pt nanocomposites were synthesized and characterized by UV/vis, X-ray photoelectron spectroscopic (XPS), FTIR, TEM, and XRD methods. Pyrenetetrasulfonic acid was not only used as the stabilizer to prevent agglomeration of Pt nanoparticles but also served as the light-harvesting photosensitizer, absorbing irradiating light and transferring photoexited electrons to the platinum nanoparticles. The occurrence of the photoinduced electron transfer process was confirmed by the combination of time-resolved fluorescence and photoelectrochemical spectral measurements. Photocatalytic results showed that PTSA functionalized Pt nanocomposites could be used as stable photocatalysts for photoinducing H2 evolution. At the optimal reaction conditions (nPt:nPTSA=100, pH 3), enhanced amounts of hydrogen were evolved from the system under UV/vis irradiation in the absence of an electron mediator. The corresponding amount of hydrogen evolution was 125.1 μmol for 12 h exposure to UV/vis irradiation, and the apparent quantum efficiency at a wavelength of λ=365 nm was 11.5 %.

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