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  Ionothermal synthesis of triazine-heptazine based co-frameworks with apparent quantum yields of 60 % at 420 nm for solar hydrogen production from "sea water"

Zhang, G., Lin, L., Li, G., Zhang, Y., Savateev, A., Wang, X., et al. (2018). Ionothermal synthesis of triazine-heptazine based co-frameworks with apparent quantum yields of 60 % at 420 nm for solar hydrogen production from "sea water". Angewandte Chemie International Edition, 57(30), 9372-9375. doi:10.1002/anie.201804702.

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 Creators:
Zhang, Guigang1, Author              
Lin, Lihua, Author
Li, Guosheng, Author
Zhang, Yongfan, Author
Savateev, Aleksandr1, Author              
Wang, Xinchen, Author
Antonietti, Markus2, Author              
Affiliations:
1Aleksandr Savateev, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2421702              
2Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863321              

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Free keywords: copolymers; exciton splitting; hydrogen production; ionothermal synthesis; polymeric carbon nitride
 Abstract: Polymeric carbon nitride (PCN), in either triazine or heptazine form, has been regarded as a promising metal‐free, environmentally benign, and sustainable photocatalyst for solar hydrogen production. However, PCN in most cases only exhibits moderate activity owing to its inherent properties, such as rapid charge carrier recombination. Herein we present a triazine–heptazine copolymer synthesized by simple post‐calcination of PCN in eutectic salts, that is, NaCl/KCl, to modulate the polymerization process and optimize the structure. The construction of an internal triazine–heptazine donor–acceptor (D‐A) heterostructure was affirmed to significantly accelerate interface charge transfer (CT) and thus boost the photocatalytic activity (AQY=60 % at 420 nm). This study highlights the construction of intermolecular D‐A copolymers in NaCl/KCl molten salts with higher melting points but in the absence of lithium to modulate the chemical structure and properties of PCN.

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Language(s): eng - English
 Dates: 2018-05-312018
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
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Title: Angewandte Chemie International Edition
  Other : Angew. Chem., Int. Ed.
  Other : Angew. Chem. Int. Ed.
  Other : Angewandte Chemie, International Edition
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 57 (30) Sequence Number: - Start / End Page: 9372 - 9375 Identifier: ISSN: 1433-7851

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Title: Angewandte Chemie
  Abbreviation : Angew. Chem.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 130 (30) Sequence Number: - Start / End Page: 9516 - 9520 Identifier: ISSN: 0044-8249