Photoelectron Migration Monitored by 3d Orbital Electron Configuration of Spinel Cocatalysts for Covalent Organic Framework-Based Photocatalytic Hydrogen Evolution | Sciact - CRIS-system of Boreskov Institute of Catalysis

Photoelectron Migration Monitored by 3d Orbital Electron Configuration of Spinel Cocatalysts for Covalent Organic Framework-Based Photocatalytic Hydrogen Evolution Full article

Journal

Applied Catalysis B: Environmental
ISSN: 0926-3373 , E-ISSN: 1873-3883

Output data

Year: 2024, Volume: 350, Article number : 123916, Pages count : 8 DOI: 10.1016/j.apcatb.2024.123916

Tags

Covalent organic frameworks; Photocatalysis hydrogen production; 3d orbital electron configuration; Cocatalyst; Spinel

Authors

He Wenhao ¹ , Kong Ke ^1,2 , Wang Meiying ¹ , Dong Beibei ¹ , Yuan Daqiang ² , Bryliakov Konstantin P. ³ , Wang Ruihu ^1,2

Affiliations

1	Hebei Key Laboratory of Functional Polymer, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300130, China
2	State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences Fuzhou, Fujian 350002, China
3	Zelinsky Institute of Organic Chemistry RAS, Leninsky prospekt 47, Moscow 119991, Russia

Covalent organic frameworks (COFs) are promising polymer semiconductors in solar-driven hydrogen production. It is pivotal to promote separation and transfer of charge carriers for achieving high hydrogen evolution efficiency. Herein, we presented one type of noble-metal-free photocatalytic systems by integrating typical ketoenamine-linked TpPa-COF with spinel-structured ACo2O4 (ACo2O4/TpPa-COF, A = Cu, Ni, Fe). The 3d orbital electron configurations of metal ions in ACo2O4 regulate the photogenerated electrons transfer from the conductive band of TpPa-COF to the active sites of cocatalyst. The 3d9 orbital configuration and electron-rich capability of CuCo2O4 have been evidenced to boost the directional migration of charge carriers, thus significantly expediting photocatalytic hydrogen evolution kinetics. The hydrogen evolution rate in CuCo2O4/TpPaCOF is up to 8346 µmol g− 1 h− 1, which surpasses those in their physical mixture (3769 µmol g− 1 h− 1), and is even higher than that of Pt-loaded TpPa-COF (7587 µmol g− 1 h− 1). This work provides new protocols to construct noble-metal-free COF-based photocatalytic systems for solar-to-chemical conversion.

He W. , Kong K. , Wang M. , Dong B. , Yuan D. , Bryliakov K.P. , Wang R.
Photoelectron Migration Monitored by 3d Orbital Electron Configuration of Spinel Cocatalysts for Covalent Organic Framework-Based Photocatalytic Hydrogen Evolution
Applied Catalysis B: Environmental. 2024. V.350. 123916 :1-8. DOI: 10.1016/j.apcatb.2024.123916 WOS Scopus OpenAlex

Submitted:	Jan 15, 2024
Accepted:	Mar 3, 2024
Published online:	Mar 7, 2024
Published print:	Aug 5, 2024

Web of science:	WOS:001209306400001
Scopus:	2-s2.0-85187219307
OpenAlex:	W4395079217

DB	Citing
Scopus	6
Web of science	6
OpenAlex	6