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Self‐Sensitized Carbon Nitride Microspheres for Long‐Lasting Visible‐Light‐Driven Hydrogen Generation
Author(s) -
Gu Quan,
Gao Ziwei,
Xue Can
Publication year - 2016
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201600181
Subject(s) - carbon nitride , materials science , nitride , visible spectrum , photocatalysis , triazine , carbon fibers , microsphere , nanotechnology , chemical engineering , chemistry , composite number , catalysis , optoelectronics , composite material , organic chemistry , polymer chemistry , layer (electronics) , engineering
A new type of metal‐free photocatalyst is reported having a microsphere core of oxygen‐containing carbon nitride and self‐sensitized surfaces by covalently linked polymeric triazine dyes. These self‐sensitized carbon nitride microspheres exhibit high visible‐light activities in photocatalytic H 2 generation with excellent stability for more than 100 h reaction. Comparing to the traditional g‐C 3 N 4 with activities terminated at 450 nm, the polymeric triazine dyes on the carbon nitride microsphere surface allow for effective wide‐range visible‐light harvesting and extend the H 2 generation activities up to 600 nm. It is believed that this new type of highly stable self‐sensitized metal‐free structure opens a new direction of future development of low‐cost photocatalysts for efficient and long‐term solar fuels production.