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Sol Processing of Conjugated Carbon Nitride Powders for Thin‐Film Fabrication
Author(s) -
Zhang Jinshui,
Zhang Mingwen,
Lin Lihua,
Wang Xinchen
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.201501001
Subject(s) - materials science , thin film , carbon nitride , fabrication , graphitic carbon nitride , oxidizing agent , polymer , electrochemistry , chemical engineering , colloid , nanotechnology , carbon nanotube , sol gel , electrode , carbon fibers , conjugated system , nitride , catalysis , composite material , organic chemistry , layer (electronics) , chemistry , composite number , medicine , alternative medicine , pathology , photocatalysis , engineering
The chemical protonation of graphitic carbon nitride (CN) solids with strong oxidizing acids, for example HNO 3 , is demonstrated as an efficient pathway for the sol processing of a stable CN colloidal suspension, which can be translated into thin films by dip/disperse‐coating techniques. The unique features of CN colloids, such as the polymeric matrix and the reversible hydrogen bonding, result in the thin‐film electrodes derived from the sol solution exhibiting a high mechanical stability with improved conductivity for charge transport, and thus show a remarkably enhanced photo‐electrochemical performance. The polymer system can in principle be broadly tuned by hybridization with desired functionalities, thus paving the way for the application of CN for specific tasks, as exemplified here by coupling with carbon nanotubes.