Strong-Base-Assisted Synthesis of a Crystalline Covalent Triazine Framework with High Hydrophilicity via Benzylamine Monomer for Photocatalytic Water Splitting

Siquan Zhang; Guang Cheng; Liping Guo; Ning Wang; Bien Tan; Shangbin Jin

doi:10.1002/anie.201914424

Strong-Base-Assisted Synthesis of a Crystalline Covalent Triazine Framework with High Hydrophilicity via Benzylamine Monomer for Photocatalytic Water Splitting

Angew Chem Int Ed Engl. 2020 Apr 6;59(15):6007-6014. doi: 10.1002/anie.201914424. Epub 2020 Feb 19.

Authors

Siquan Zhang¹, Guang Cheng¹, Liping Guo¹, Ning Wang¹, Bien Tan¹, Shangbin Jin¹

Affiliation

¹ Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Luoyu Road No. 1037, 430074, Wuhan, China.

PMID: 31930618
DOI: 10.1002/anie.201914424

Abstract

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 H₂ evolution and O₂ 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.

Keywords: benzylamine; covalent triazine frameworks; hydrophilicity; photocatalysis.

Abstract

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