Polymer Networks Assembled by Ruthenium Catalysts for Enhanced Water Splitting Performance in Calixarene Dye-Sensitized Photoelectrochemical Cells.

Autor: Wang XL; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, School of Materials Science and Engineering, Sun Yet-sen University, Guangzhou, 510275, P. R. China., Tan LL; Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, 515031, P. R. China., Liu Y; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, School of Materials Science and Engineering, Sun Yet-sen University, Guangzhou, 510275, P. R. China., Liu JX; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, School of Materials Science and Engineering, Sun Yet-sen University, Guangzhou, 510275, P. R. China., Li XA; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, School of Materials Science and Engineering, Sun Yet-sen University, Guangzhou, 510275, P. R. China., Liang ZZ; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, School of Materials Science and Engineering, Sun Yet-sen University, Guangzhou, 510275, P. R. China., Huang JF; School of Materials and New Energy, South China Normal University, Guangzhou, 510631, P. R. China., Liu JM; The Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, School of Materials Science and Engineering, Sun Yet-sen University, Guangzhou, 510275, P. R. China.
Jazyk: angličtina
Zdroj: ChemSusChem [ChemSusChem] 2024 Nov 21, pp. e202402395. Date of Electronic Publication: 2024 Nov 21.
DOI: 10.1002/cssc.202402395
Abstrakt: Metal-free photosensitizers for the construction of low-cost and eco-friendly dye-sensitized photoelectrochemical cells (DSPECs) have recently been greatly improved, but the optimization of water oxidation catalysts (WOCs) used in DSPECs based on metal-free dyes has received little attention. Herein, a series of polymer networks (RuTPA, RuCz, RuPr and RuTz) assembled by ruthenium WOCs (RuCHO) with various organic donors are constructed and combined with calixarene dyes to prepare DSPEC devices. The FTO|TiO 2 |C4BTP+RuTPA photoanode shows the best performance with 85 % Faraday efficiency for oxygen production and 477 μA cm -2 photocurrent density after 200 s chopping irradiation at 0 V vs. Ag/AgCl, one of the highest records among other reported dye-sensitized photoanodes. Compared to monomeric RuCHO, Ru-based polymers with lower Ru content have higher activity and stability due to their rapid electron transfer and anti-aggregation ability. Meanwhile, RuTPA loaded electrodes show better performance due to the lower overpotential of the water oxidation reaction caused by the higher electron donating ability of its donor. This pioneering work incorporates Ru polymer networks as WOCs into the calixarene-sensitized DSPEC system, which has significant potential as a highly efficient and stable photoelectrochemical water splitting device.
(© 2024 Wiley-VCH GmbH.)
Databáze: MEDLINE
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