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Strong‐Base‐Assisted Synthesis of a Crystalline Covalent Triazine Framework with High Hydrophilicity via Benzylamine Monomer for Photocatalytic Water Splitting
Author(s) -
Zhang Siquan,
Cheng Guang,
Guo Liping,
Wang Ning,
Tan Bien,
Jin Shangbin
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201914424
Subject(s) - photocatalysis , benzylamine , crystallinity , monomer , water splitting , reagent , photocatalytic water splitting , materials science , triazine , covalent bond , catalysis , chemical engineering , polymer chemistry , chemistry , photochemistry , organic chemistry , polymer , engineering , composite material
Methods to synthesize crystalline covalent triazine frameworks (CTFs) are limited and little attention has been paid to development of hydrophilic CTFs and photocatalytic overall water splitting. A route to synthesize crystalline and hydrophilic CTF‐HUST‐A1 with a benzylamine‐functionalized monomer is presented. The base reagent used plays an important role in the enhancement of crystallinity and hydrophilicity. CTF‐HUST‐A1 exhibits good crystallinity, excellent hydrophilicity, and excellent photocatalytic activity in sacrificial photocatalytic hydrogen evolution (hydrogen evolution rate up to 9200 μmol g −1 h −1 ). Photocatalytic overall water splitting is achieved by depositing dual co‐catalysts in CTF‐HUST‐A1, with H 2 evolution and O 2 evolution rates of 25.4 μmol g −1 h −1 and 12.9 μmol g −1 h −1 in pure water without using sacrificial agent.