Reactors, Kinetics, and Catalysis

Photocatalytic hydrogen production from water with nonfood hydrocarbons as oxidizing sacrifice agents

  1. Seiichi Deguchi1,*,
  2. Toshinori Takeichi1,
  3. Shoji Shimasaki1,
  4. Muneaki Ogawa1,
  5. Norifumi Isu2

Article first published online: 29 NOV 2010

DOI: 10.1002/aic.12414

Issue

AIChE Journal

AIChE Journal

Volume 57, Issue 8, pages 2237–2243, August 2011

Additional Information

How to Cite

Deguchi, S., Takeichi, T., Shimasaki, S., Ogawa, M. and Isu, N. (2011), Photocatalytic hydrogen production from water with nonfood hydrocarbons as oxidizing sacrifice agents. AIChE J., 57: 2237–2243. doi: 10.1002/aic.12414

Author Information

  1. 1

    Dept. of Energy Engineering and Science, Nagoya University, Nagoya 464-8603, Japan

  2. 2

    General Research Institute of Technology, INAX Corp., Tokoname 479-8588, Japan

*Dept. of Energy Engineering and Science, Nagoya University, Nagoya 464-8603, Japan

Publication History

  1. Issue published online: 12 JUL 2011
  2. Article first published online: 29 NOV 2010
  3. Accepted manuscript online: 25 AUG 2010 12:01PM EST
  4. Manuscript Revised: 12 AUG 2010
  5. Manuscript Received: 9 MAY 2010

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Keywords:

  • catalysis;
  • photochemical reactions;
  • energy;
  • reaction kinetics;
  • aqueous solutions

Abstract

To enhance photocatalytic water splitting, various oxidizing sacrifice agents (OSA) have been added to the system in order to scavenge the coproduced O2, and, thus, to hinder the reverse reactions. In the aim of achieving carbon-neutral photocatalytic water splitting, nonfood hydrocarbons of castor- and jojoba-oils were evaluated as OSA. Moreover, various surfactants were tested as emulsifiers for W/O binary solution for promoting photocatalytic water splitting rate. Among the OSA used, the castor-oil was found to be more suitable candidate compared to jojoba-oil, which was attributed to its smaller carbon chain numbers of mainly 18. Without surfactants, around 20 vol %-castor-oil aqueous binary solution with TiO2/Pt(0.10 wt %) provided the highest water splitting rate of about 30 mL-H2/(m2·h). Among tested surfactants, liquid-detergent was the best due to its optical transparency. 40 vol %- or 60 vol %-castor-oil emulsion with a drop of liquid-detergent resulted in a water splitting rate of 125 mL-H2/(m2·h), which was four times greater that the aforementioned highest value. © 2010 American Institute of Chemical Engineers AIChE J, 2011

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