Photocatalytic microfluidic reactor with a novel compound catalyst film using solar energy

Xing Wang, Zliike Liu, Ngai Yui Chan, Hx W. Chan, Xuming Zhang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

1 Citation (Scopus)

Abstract

This paper reports a microfluidic reactor (dimensions 10 x 10 x 0.1 mm 3) that utilizes a novel BiVO4/TiO2 heterojmiction film to enhance the photocatalytic perfoimance under solar iiracliation. The microreactor inherits many merits from the micro fluidic s such as fine flow control and large surface-area-to-volume ratio. More importantly, it tackles two fundamental problems of photocatalysis: limited utilization of solar spectrum and severe recombination of photo-excited electrons and holes. These are achieved by using the BiVO4 film to absorb the visible range of solar light and the TiO2 part to absorb the near UV range, and by using the heteroj miction to separate the photo-excited electrons and holes. In experiment, the microreactor using BiVO4/TiO2 shows a reaction rate about 2 times of that using the commercial P25 TiO2 film.
Original languageEnglish
Title of host publicationProceedings of the 16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012
PublisherChemical and Biological Microsystems Society
Pages1993-1995
Number of pages3
ISBN (Print)9780979806452
Publication statusPublished - 1 Jan 2012
Event16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012 - Okinawa, Japan
Duration: 28 Oct 20121 Nov 2012

Conference

Conference16th International Conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2012
CountryJapan
CityOkinawa
Period28/10/121/11/12

Keywords

  • Heterojunction
  • Microfluidics
  • Photo vatalysis
  • Solar energy

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Bioengineering

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