0D–2D Quantum Dot: Metal Dichalcogenide Nanocomposite Photocatalyst Achieves Efficient Hydrogen Generation

Xiao Yuan Liu, Hao Chen, Ruili Wang, Yuequn Shang, Qiong Zhang, Wei Li, Guozhen Zhang, Juan Su, Cao Thang Dinh, F. Pelayo García de Arquer, Jie Li, Jun Jiang, Qixi Mi, Rui Si, Xiaopeng Li, Yuhan Sun, Yi Tao Long*, He Tian, Edward H. Sargent, Zhijun Ning

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

90 Scopus citations

Abstract

Hydrogen generation via photocatalysis-driven water splitting provides a convenient approach to turn solar energy into chemical fuel. The development of photocatalysis system that can effectively harvest visible light for hydrogen generation is an essential task in order to utilize this technology. Herein, a kind of cadmium free Zn–Ag–In–S (ZAIS) colloidal quantum dots (CQDs) that shows remarkably photocatalytic efficiency in the visible region is developed. More importantly, a nanocomposite based on the combination of 0D ZAIS CQDs and 2D MoS2 nanosheet is developed. This can leverage the strong light harvesting capability of CQDs and catalytic performance of MoS2 simultaneously. As a result, an excellent external quantum efficiency of 40.8% at 400 nm is achieved for CQD-based hydrogen generation catalyst. This work presents a new platform for the development of high-efficiency photocatalyst based on 0D–2D nanocomposite.

Original languageEnglish (US)
Article number1605646
JournalAdvanced Materials
Volume29
Issue number22
DOIs
StatePublished - Jun 13 2017

Keywords

  • 0D–2D nanocomposites
  • MoS nanosheets
  • hydrogen generation
  • photocatalysis
  • quantum dots

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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