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Mesoporous Carbon Nitride‐Tungsten Oxide Composites for Enhanced Photocatalytic Hydrogen Evolution
Author(s) -
Kailasam Kamalakannan,
Fischer Anna,
Zhang Guigang,
Zhang Jinshui,
Schwarze Michael,
Schröder Marc,
Wang Xinchen,
Schomäcker Reinhard,
Thomas Arne
Publication year - 2015
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201403278
Subject(s) - photocatalysis , materials science , nitride , mesoporous material , carbon nitride , oxide , water splitting , carbon fibers , tungsten , hydrogen , chemical engineering , composite material , catalysis , chemistry , composite number , metallurgy , organic chemistry , layer (electronics) , engineering , biochemistry
Composites of mesoporous polymeric carbon nitride and tungsten(VI) oxide show very high photocatalytic activity for the evolution of hydrogen from water under visible light and in the presence of sacrificial electron donors. Already addition of very small amounts of WO 3 yields up to a twofold increase in the efficiency when compared to bulk carbon nitrides and their composites and more notably even to the best reported mesoporous carbon nitride‐based photocatalytic materials. The higher activity can be attributed to the high surface area and synergetic effect of the carbon nitrides and the WO 3 resulting in improved charge separation through a photocatalytic solid‐state Z‐scheme mechanism.