A Graphitic‐C 3 N 4  “Seaweed” Architecture for Enhanced Hydrogen Evolution | Zendy

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

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A Graphitic‐C 3 N 4 “Seaweed” Architecture for Enhanced Hydrogen Evolution

Author(s) -

Han Qing,

Wang Bing,

Zhao Yang,

Hu Chuangang,

Qu Liangti

Publication year - 2015

Publication title -

angewandte chemie international edition

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 1433-7851

DOI - 10.1002/anie.201504985

Subject(s) - calcination , photocatalysis , nanofiber , mesoporous material , materials science , algae , chemical engineering , catalysis , fiber , hydrogen , nanostructure , nanotechnology , hydrogen production , water splitting , chemistry , ecology , composite material , biology , organic chemistry , engineering

A seaweed‐like graphitic‐C 3 N 4 (g‐C 3 N 4 “seaweed”) architecture has been prepared by direct calcination of the freeze‐drying‐assembled, hydrothermally treated dicyandiamide fiber network. The seaweed network of mesoporous g‐C 3 N 4 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‐C 3 N 4 bulk counterpart), and a remarkable apparent quantum efficiency of 7.8 % at 420 nm, better than most of the g‐C 3 N 4 nanostructures reported. This work presents a very simple method for designing and developing high‐performance catalysts for hydrogen evolution.

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