A Graphitic-C3N4 "seaweed" Architecture for Enhanced Hydrogen Evolution

Qing Han; Bing Wang; Yang Zhao; Chuangang Hu; Liangti Qu

doi:10.1002/anie.201504985

A Graphitic-C₃N₄ "seaweed" Architecture for Enhanced Hydrogen Evolution

Qing Han, Bing Wang, Yang Zhao, Chuangang Hu, Liangti Qu^*

^*Corresponding author for this work

School of Chemistry and Chemical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

444 Citations (Scopus)

Abstract

A seaweed-like graphitic-C₃N₄ (g-C₃N₄ "seaweed") architecture has been prepared by direct calcination of the freeze-drying-assembled, hydrothermally treated dicyandiamide fiber network. The seaweed network of mesoporous g-C₃N₄ nanofibers is favorable for light harvesting, charge separation and utilization of active sites, and has highly efficient photocatalytic behavior for water splitting. It exhibits a high hydrogen-evolution rate of 9900 μmol h^-1 g^-1 (thirty times higher than that of its g-C₃N₄ bulk counterpart), and a remarkable apparent quantum efficiency of 7.8 % at 420 nm, better than most of the g-C₃N₄ nanostructures reported. This work presents a very simple method for designing and developing high-performance catalysts for hydrogen evolution.

Original language	English
Pages (from-to)	11433-11437
Number of pages	5
Journal	Angewandte Chemie - International Edition
Volume	54
Issue number	39
DOIs	https://doi.org/10.1002/anie.201504985
Publication status	Published - 1 Sept 2015

Keywords

g-CN "seaweed"
hydrogen evolution
photocatalysis
self-assembly
template-free

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1002/anie.201504985

Cite this

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abstract = "A seaweed-like graphitic-C3N4 (g-C3N4 {"}seaweed{"}) architecture has been prepared by direct calcination of the freeze-drying-assembled, hydrothermally treated dicyandiamide fiber network. The seaweed network of mesoporous g-C3N4 nanofibers is favorable for light harvesting, charge separation and utilization of active sites, and has highly efficient photocatalytic behavior for water splitting. It exhibits a high hydrogen-evolution rate of 9900 μmol h-1 g-1 (thirty times higher than that of its g-C3N4 bulk counterpart), and a remarkable apparent quantum efficiency of 7.8 % at 420 nm, better than most of the g-C3N4 nanostructures reported. This work presents a very simple method for designing and developing high-performance catalysts for hydrogen evolution.",

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AU - Zhao, Yang

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AU - Qu, Liangti

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