Toward Inexpensive Photocatalytic Hydrogen Evolution: A Nickel Sulfide Catalyst Supported on a High-Stability Metal-Organic Framework

Aaron W. Peters, Zhanyong Li, Omar k Farha*, Joseph T Hupp

*Corresponding author for this work

Research output: Contribution to journalArticle

87 Scopus citations

Abstract

Few-atom clusters composed of nickel and sulfur have been successfully installed into the Zr(IV)-based metal-organic framework (MOF) NU-1000 via ALD-like chemistry (ALD = atomic layer deposition). X-ray photoelectron spectroscopy and Raman spectroscopy are used to determine that primarily Ni2+ and S2- sites are deposited within the MOF. In a pH 7 buffered aqueous solution, the porous catalyst is able to produce H2 gas at a rate of 3.1 mmol g-1 h-1 upon UV irradiation, whereas no H2 is generated by irradiating bare NU-1000. Upon visible light irradiation, little H2 generation was observed; however, with the addition of an organic dye, rose bengal, NiS-AIM can catalyze the production of H2 at an enhanced rate of 4.8 mmol g-1 h-1. These results indicate that ALD in MOFs (AIM) can engender reactivity within high surface area supports for applications in the solar fuels field.

Original languageEnglish (US)
Pages (from-to)20675-20681
Number of pages7
JournalACS Applied Materials and Interfaces
Volume8
Issue number32
DOIs
StatePublished - Aug 17 2016

Keywords

  • atomic layer deposition
  • hydrogen evolution
  • metal-organic framework
  • nickel sulfide
  • photocatalysis

ASJC Scopus subject areas

  • Materials Science(all)

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