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Graphitic Carbon Nitride Nanoribbons: Graphene‐Assisted Formation and Synergic Function for Highly Efficient Hydrogen Evolution
Author(s) -
Zhao Yang,
Zhao Fei,
Wang Xiaopeng,
Xu Chenyu,
Zhang Zhipan,
Shi Gaoquan,
Qu Liangti
Publication year - 2014
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201409080
Subject(s) - overpotential , tafel equation , graphene , materials science , catalysis , graphitic carbon nitride , nanotechnology , nitride , metal , chemical engineering , water splitting , carbon nitride , graphene nanoribbons , carbon fibers , chemistry , electrochemistry , electrode , composite number , metallurgy , composite material , organic chemistry , layer (electronics) , photocatalysis , engineering
The development of new promising metal‐free catalysts is of great significance for the electrocatalytic hydrogen evolution reaction (HER). Herein, a rationally assembled three‐dimensional (3D) architecture of 1D graphitic carbon nitride (g‐C 3 N 4 ) nanoribbons with 2D graphene sheets has been developed by a one‐step hydrothermal method. Because of the multipathway of charge and mass transport, the hierarchically structured g‐C 3 N 4 nanoribbon–graphene hybrids lead to a high electrocatalytic ability for HER with a Tafel slope of 54 mV decade −1 , a low onset overpotential of 80 mV and overpotential of 207 mV to approach a current of 10 mA cm −2 , superior to those non‐metal materials and well‐developed metallic catalysts reported previously. This work presents a great advance for designing and developing highly efficient metal‐free catalyst for hydrogen evolution.