Premium
Accelerating the Hole Mobility of Graphitic Carbon Nitride for Photocatalytic Hydrogen Evolution via 2D/2D Heterojunction Structural Advantages and Ni(OH) 2 Characteristic
Author(s) -
Hao Quanguo,
Song Yanhua,
Mo Zhao,
Deng Jiujun,
Yi Jianjian,
El-Alami Wiam,
Xu Hui,
Li Huaming
Publication year - 2020
Publication title -
solar rrl
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.544
H-Index - 37
ISSN - 2367-198X
DOI - 10.1002/solr.201900538
Subject(s) - photocatalysis , heterojunction , triethanolamine , materials science , graphitic carbon nitride , carbon nitride , hydrogen production , hydrogen , chemical engineering , nitride , quantum efficiency , nanotechnology , catalysis , optoelectronics , chemistry , analytical chemistry (journal) , organic chemistry , layer (electronics) , engineering
Although photocatalytic hydrogen evolution is significant for solar conversion and energy supply, the photocatalytic efficiency is hampered by the low photoinduced holes mobility. Herein, the 2D Ni(OH) 2 as an operational cocatalyst is integrated with 2D graphitic carbon nitride (2D‐CN) ultrafine to form a 2D/2D heterojunction to improve the photocatalytic hydrogen evolution. Due to the high mobility attribute of the Ni(OH) 2 holes and the unique 2D/2D heterojunction of Ni(OH) 2 /CN, the specific photocatalyst Ni(OH) 2 /2D‐CN accelerates the photocarrier separation/transport, thereby achieving the breakthrough of continuous photocatalytic hydrogen evolution without using Pt cocatalyst and sacrificial agent. Above all, the as‐obtained Ni(OH) 2 /2D‐CN exhibits a hydrogen evolution rate of 921.4 μmol h −1 g −1 with an external quantum efficiency of 5.21% at 400 nm using 10% triethanolamine as a sacrificial agent. The work provides a new research approach for the catalytic conversion of energy.