Constructing a metallic/semiconducting TaB2/Ta2O 5 core/shell heterostructure for photocatalytic hydrogen evolution

Yongqiang Yang, Chenghua Sun, Lianzhou Wang, Zhibo Liu, Gang Liu, Xiuliang Ma, Hui-Ming Cheng

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Abstract

A conceptual metallic/semiconducting TaB2/Ta2O 5 core/shell heterostructure exhibits a substantial improvement in photocatalytic hydrogen evolution rate under both UV and visible light. TaB 2 plays a dual role in boosting the photocatalytic activity by extending the light-absorption range via efficient interfacial electronic modification and by promoting the separation and transfer of photoexcited charge carriers by using metallic TaB2 core as an electron collector. 

Original languageEnglish
Article number1400057
Number of pages7
JournalAdvanced Energy Materials
Volume4
Issue number12
DOIs
Publication statusPublished - 2014

Keywords

  • core/shell structures
  • hydrogen generation
  • photocatalysis

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