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Ti3C2 MXene co-catalyst on metal sulfide photo-absorbers for enhanced visible-light photocatalytic hydrogen production

Jingrun RanSchool of Chemical Engineering, The University of Adelaide, Adelaide, South Australia 5005, AustraliaGuoping GaoSchool of Chemistry, Physics and Mechanical Engineering Faculty, Queensland University of Technology, Garden Point Campus, Brisbane, Queensland 4001, AustraliaFa‐tang LiCollege of Science, Hebei University of Science and Technology, Shijiazhuang 050018, ChinaTianyi MaSchool of Chemical Engineering, The University of Adelaide, Adelaide, South Australia 5005, AustraliaAijun DuSchool of Chemistry, Physics and Mechanical Engineering Faculty, Queensland University of Technology, Garden Point Campus, Brisbane, Queensland 4001, AustraliaShi‐Zhang QiaoSchool of Chemical Engineering, The University of Adelaide, Adelaide, South Australia 5005, Australia

2017en

ABI

Annotatsiya

Abstract Scalable and sustainable solar hydrogen production through photocatalytic water splitting requires highly active and stable earth-abundant co-catalysts to replace expensive and rare platinum. Here we employ density functional theory calculations to direct atomic-level exploration, design and fabrication of a MXene material, Ti 3 C 2 nanoparticles, as a highly efficient co-catalyst. Ti 3 C 2 nanoparticles are rationally integrated with cadmium sulfide via a hydrothermal strategy to induce a super high visible-light photocatalytic hydrogen production activity of 14,342 μmol h −1 g −1 and an apparent quantum efficiency of 40.1% at 420 nm. This high performance arises from the favourable Fermi level position, electrical conductivity and hydrogen evolution capacity of Ti 3 C 2 nanoparticles. Furthermore, Ti 3 C 2 nanoparticles also serve as an efficient co-catalyst on ZnS or Zn x Cd 1− x S. This work demonstrates the potential of earth-abundant MXene family materials to construct numerous high performance and low-cost photocatalysts/photoelectrodes.

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DOI: 10.1038/ncomms13907

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