Half-metallic Carbon Nitride Nanosheets with Micro Grid Mode Resonance Structure for Efficient Photocatalytic Hydrogen Evolution

Overview

Journal Nat Commun

Specialty Biology

Date 2018 Aug 24

PMID 30135422

Citations 17

Authors

Gang Zhou

Yun Shan

Youyou Hu

Xiaoyong Xu

Liyuan Long

Jinlei Zhang

Jun Dai

Junhong Guo

Jiancang Shen

Shuang Li

Lizhe Liu

Xinglong Wu

Affiliations

Soon will be listed here.

Abstract

Photocatalytic hydrogen evolution from water has triggered an intensive search for metal-free semiconducting photocatalysts. However, traditional semiconducting materials suffer from limited hydrogen evolution efficiency owing to low intrinsic electron transfer, rapid recombination of photogenerated carriers, and lack of artificial microstructure. Herein, we report a metal-free half-metallic carbon nitride for highly efficient photocatalytic hydrogen evolution. The introduced half-metallic features not only effectively facilitate carrier transfer but also provide more active sites for hydrogen evolution reaction. The nanosheets incorporated into a micro grid mode resonance structure via in situ pyrolysis of ionic liquid, which show further enhanced photoelectronic coupling and entire solar energy exploitation, boosts the hydrogen evolution rate reach up to 1009 μmol g h. Our findings propose a strategy for micro-structural regulations of half-metallic carbon nitride material, and meanwhile the fundamentals provide inspirations for the steering of electron transfer and solar energy absorption in electrocatalysis, photoelectrocatalysis, and photovoltaic cells.

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