Sacrificial hydrogen generation from formaldehyde with Pt/TiO2 photocatalyst in solar radiation

Pankaj Chowdhury, Ghodsieh Malekshoar, Madhumita B. Ray, Jesse Zhu, Ajay K. Ray

Research output: Journal PublicationArticlepeer-review

68 Citations (Scopus)

Abstract

In this work, solar TiO2 photocatalysis was used for sacrificial hydrogen generation from formaldehyde. Platinum was loaded onto a TiO 2 photocatalyst by a solar photodeposition method to suppress the electron/hole recombination process. The photocatalyst inside the reactor was irradiated from the top with a solar simulator. Photocatalytic hydrogen generation from formaldehyde was influenced by the solution pH, platinum loading (wt %) on TiO2, catalyst concentration, light intensity, and initial formaldehyde concentration. A Langmuir-type model fitted well with the experimental data, and the values of surface reaction rate constant, k, and the adsorption equilibrium constant, K, are 2.3598 × 10-6 mol min-1 and 17.73 M-1, respectively. Apparent quantum yield (QY) was higher for the UV light-driven hydrogen generation (10.91%) compared to the solar light-driven hydrogen generation (1.24%).

Original languageEnglish
Pages (from-to)5023-5029
Number of pages7
JournalIndustrial & Engineering Chemistry Research
Volume52
Issue number14
DOIs
Publication statusPublished - 10 Apr 2013
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry (all)
  • Chemical Engineering (all)
  • Industrial and Manufacturing Engineering

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