Orange Zinc Germanate with Metallic Ge-Ge Bonds as a Chromophore-Like Center for Visible-Light-Driven Water Splitting

Ling Qian, Jian Fu Chen, Yu Hang Li, Long Wu, Hai Feng Wang, Ai Ping Chen, P. Hu, Li Rong Zheng*, Hua Gui Yang

*Corresponding author for this work

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

The efficiency of solar-energy-conversion devices depends on the absorption region and intensity of the photon collectors. Organic chromophores, which have been widely stabilized on inorganic semiconductors for light trapping, are limited by the interface between the chromophore and semiconductor. Herein we report a novel orange zinc germanate (Zn-Ge-O) with a chromophore-like structure, by which the absorption region can be dramatically expanded. Structural characterizations and theoretical calculations together reveal that the origin of visible-light response can be attributed to the unusual metallic Ge-Ge bonds which act in a similar way to organic chromophores. Benefiting from the enhanced light harvest, the orange Zn-Ge-O demonstrates superior capacity for solar-driven hydrogen production.

Original languageEnglish
Pages (from-to)11467-11471
Number of pages5
JournalAngewandte Chemie International Edition
Volume54
Issue number39
Early online date20 Aug 2015
DOIs
Publication statusPublished - 21 Sep 2015

Keywords

  • Chromophore-like structures
  • Ge-Ge bonds
  • Hydrogen evolution
  • Semiconductors
  • Visible-light responsive

ASJC Scopus subject areas

  • Chemistry(all)
  • Catalysis

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