eprintid: 10112351
rev_number: 15
eprint_status: archive
userid: 608
dir: disk0/10/11/23/51
datestamp: 2020-10-15 12:34:55
lastmod: 2021-09-26 23:19:13
status_changed: 2020-10-15 12:34:55
type: article
metadata_visibility: show
creators_name: Wu, C
creators_name: Yu, G
creators_name: Yin, Y
creators_name: Wang, Y
creators_name: Chen, L
creators_name: Han, Q
creators_name: Tang, J
creators_name: Wang, B
title: Mesoporous Polymeric Cyanamide-Triazole-Heptazine Photocatalysts for Highly-Efficient Water Splitting
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F43
keywords: conjugated polymers, hydrogen evolution reaction, oxygen evolution reaction, photocatalysts, water splitting
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: Conjugated polymers are promising light harvesters for water reduction/oxidation due to their simple synthesis and adjustable bandgap. Herein, both cyanamide and triazole functional groups are first incorporated into a heptazine‐based carbon nitride (CN) polymer, resulting in a mesoporous conjugated cyanamide‐triazole‐heptazine polymer (CTHP) with different compositions by increasing the quantity of cyanamide/triazole units in the CN backbone. Varying the compositions of CTHP modulates its electronic structures, mesoporous morphologies, and redox energies, resulting in a significantly improved photocatalytic performance for both H2 and O2 evolution under visible light irradiation. A remarkable H2 evolution rate of 12723 µmol h−1 g−1 is observed, resulting in a high apparent quantum yield of 11.97% at 400 nm. In parallel, the optimized photocatalyst also exhibits an O2 evolution rate of 221 µmol h−1 g−1, 9.6 times higher than the CN counterpart, with the value being the highest among the reported CN‐based bifunctional photocatalysts. This work provides an efficient molecular engineering approach for the rational design of functional polymeric photocatalysts.
date: 2020-08-12
date_type: published
publisher: WILEY-V C H VERLAG GMBH
official_url: http://dx.doi.org/10.1002/smll.202003162
oa_status: green
full_text_type: other
language: eng
primo: open
primo_central: open_green
verified: verified_manual
elements_id: 1808230
doi: 10.1002/smll.202003162
lyricists_name: Tang, Junwang
lyricists_id: JTANG13
actors_name: Tang, Junwang
actors_id: JTANG13
actors_role: owner
full_text_status: public
publication: Small
volume: 16
number: 37
pages: 9
citation:        Wu, C;    Yu, G;    Yin, Y;    Wang, Y;    Chen, L;    Han, Q;    Tang, J;           Wu, C;  Yu, G;  Yin, Y;  Wang, Y;  Chen, L;  Han, Q;  Tang, J;  Wang, B;   - view fewer <#>    (2020)    Mesoporous Polymeric Cyanamide-Triazole-Heptazine Photocatalysts for Highly-Efficient Water Splitting.                   Small , 16  (37)      10.1002/smll.202003162 <https://doi.org/10.1002/smll.202003162>.       Green open access   
 
document_url: https://discovery-pp.ucl.ac.uk/id/eprint/10112351/1/fianl.pdf