Covalent Organic Framework Encapsulating Layered Oxide Perovskite for Efficient Photosynthesis of H2O2 DOI
Yuan Teng, Jing Zhao, Zi‐Ming Ye

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Abstract Driving efficient artificial photosynthesis of H 2 O is highly desirable in both academic and industrial fields. Here, a new core–shell Bi 3 TiNbO 9 @C 4 N heterojunction constructed for photocatalytic production by situ encapsulating an ultrathin layer covalent organic framework material (C N) on Aurivillius‐type microsheets. The porous C found to enhance visible‐light absorption ability facilitate the adsorption activation reactants intermediates. hybrid follows S‐scheme charge transfer with assistance strong internal electric field (IEF), which promotes spatial separation photogenerated carriers effectively maintains their redox abilities. As result, optimized unveils high yield rate 1.25(2) mmol g −1 h absence sacrificial agents cocatalyst, 10.9 3.5 folds higher than those pristine catalysts, respectively. This work provides strategy decorate frameworks (COFs) oxide perovskites , may stimulate intensive investigation interests functional materials/COFs materials various photocatalysis applications.

Language: Английский

Visual Location of Oxygen Vacancies on Bismuth Titanate Nanosheets with Periodic Quantum Well and Promoting H2O2 Photosynthesis DOI Open Access
Yuqing Gao, Zhen Zhan, Liping Guo

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 10, 2025

Abstract Oxygen vacancy (OV) defect engineering plays a crucial role in enhancing photocatalytic efficiency. However, the direct visual characterization of oxygen vacancies still remains technically limited. Herein, bismuth titanate (Bi 4 Ti 3 O 12 , BTO‐OV) model photocatalyst containing is constructed through density functional theory (DFT) calculations to reveal influence mechanism distinctive periodic quantum well and on charge transfer behavior BTO. Notably, distribution directly observed using low‐dose integrated differential phase contrast‐scanning transmission electron microscopy (iDPC‐STEM), providing evidence for location these BTO‐OV. Furthermore, theoretical calculation results are verified by characterizing photoelectric properties conducting performance tests hydrogen peroxide (H 2 ) photosynthesis. Specifically, BTO‐OV accelerate separation, leading H photosynthesis efficiency reaching 5278 µ m g −1 h which 5 times that original This work offers experimental references improvement mechanism.

Language: Английский

Citations

0
Strengthening Bonding Interaction of a (Co0.91V0.09)3(BTC)2 Metal–Organic Framework with BiVO4 Photoanodes Enabling Ultrastable Photoelectrochemical Water Oxidation DOI

Liangcheng Xu,

Yingjuan Zhang, Boyan Liu

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

Although the oxygen evolution reaction (OER) activity of BiVO4 photoanodes has been significantly enhanced, achieving long-term photostability is still challenging due to gradual dissolution V5+ during photoelectrochemical (PEC) water splitting. Herein, we deliberately generate ligand defects in a (Co0.91V0.09)3(BTC)2 metal-organic framework (CoV-MOF) that creates more undercoordinated sites, forming strong chemical bonds with BiVO4. Consequently, from PEC splitting can be effectively suppressed, leading enhanced stability. The optimized Co3O4/CoV-MOF/BiVO4 photoanode exhibits high photocurrent density 6.0 mA cm-2 at 1.23 V vs reversible hydrogen electrode (RHE). Impressively, stably operate for 500 h 0.6 RHE under AM 1.5 G illumination. This work demonstrates proof-of-concept anchoring ultrastable

Language: Английский

Citations

0
Solar-driven H2O2 production by S-scheme heterojunction photocatalyst DOI
Han Li, Wang Wang,

Kaiqiang Xu

et al.

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION), Journal Year: 2025, Volume and Issue: 72, P. 24 - 47

Published: May 1, 2025

Language: Английский

Citations

0
Photocatalytic cocatalysts: classification, structural design and crucial role in various reactions DOI

Chunqiang Zhuang,

Aolin Zhang,

Yihong Zhang

et al.

Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 542, P. 216867 - 216867

Published: June 3, 2025

Language: Английский

Citations

0
Covalent Organic Framework Encapsulating Layered Oxide Perovskite for Efficient Photosynthesis of H2O2 DOI
Yuan Teng, Jing Zhao, Zi‐Ming Ye

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Abstract Driving efficient artificial photosynthesis of H 2 O is highly desirable in both academic and industrial fields. Here, a new core–shell Bi 3 TiNbO 9 @C 4 N heterojunction constructed for photocatalytic production by situ encapsulating an ultrathin layer covalent organic framework material (C N) on Aurivillius‐type microsheets. The porous C found to enhance visible‐light absorption ability facilitate the adsorption activation reactants intermediates. hybrid follows S‐scheme charge transfer with assistance strong internal electric field (IEF), which promotes spatial separation photogenerated carriers effectively maintains their redox abilities. As result, optimized unveils high yield rate 1.25(2) mmol g −1 h absence sacrificial agents cocatalyst, 10.9 3.5 folds higher than those pristine catalysts, respectively. This work provides strategy decorate frameworks (COFs) oxide perovskites , may stimulate intensive investigation interests functional materials/COFs materials various photocatalysis applications.

Language: Английский

Citations

1