Facilitating Charge Separation of Donor–Acceptor Conjugated Microporous Polymers via Position Isomerism Strategy for Efficient CO2 Photoconversion DOI Open Access

Dandan Wang,

Xiaofei Yan,

Xinsheng Zhu

и другие.

Catalysts, Год журнала: 2024, Номер 14(10), С. 659 - 659

Опубликована: Сен. 24, 2024

Photoreduction of CO2 into the chemical feedstocks fuels provides a green way to help solve both energy crisis and carbon emission issues. Nevertheless, undesirable charge separation migration, as well rapid reverse recombination results in unsatisfactory photocatalytic activity most conjugated microporous polymers (CMPs). Herein, pair donor–acceptor (D-A) CMPs for photoconversion was developed through position isomerism by altering linkage sites. The show that Py-D27F with 2,7-site exhibits completely structure large molecular dipole moment, thus significantly accelerating transfer. As result, achieves higher yield 320.9 μmol g−1 h−1 CO2-to-CO photoreduction (without addition any photosensitizers precious metals), which is about three-fold greater than Py-D36F (3,6-site linkage). This study valuable idea exploring outstanding CMP photocatalysts efficient processing photocatalysis.

Язык: Английский

Cu2+/Cu+ Pair Mediated Heterojunction in Core-Shell Sio2@Cu2gabo5@Tio2 Composite for Enhanced Photocatalytic Methanol Dehydrogenation for Co-Production of H2 and Formaldehyde with Nearly 100% Selectivity DOI
Wen Ding, Run Zhao, Huanhuan Gao

и другие.

Опубликована: Янв. 1, 2025

In this paper, we report a two-step of hydrothermal and pyrolysis method for constructing S-Scheme heterojunction photocatalytic composite material with core-shell structure transformed from type-I heterojunction, SiO2@Cu2GaBO5@TiO2 (SCGBT), by combining bimetallic borate Cu2GaBO5 TiO2 as catalysts SiO2 dispersant. The Cu ions serve an electron transfer bridge hole oxidation active center, thereby promoting the spatial separation photogenerated charges to improve hydrogen production formaldehyde selectivity. Under simulated sunlight, rate SCGBT-550 (1524 μmol·g-1·h-1) was 1.8, 520, 1.7, 508, 1.3 7 times that T, CGB, ST, SCGB, h-CGBT, CGBT, respectively. And after 5 h, methanol reached 1511 μmol·g-1·h-1, which 2, 1500, 1.2, 3 selectivity up 99%. promising performance can be attributed dispersion provided SiO2, broadened light absorption range Cu2GaBO5, dual role ions. There are also interaction internal electric fields band bending guides electrons in conduction recombine holes valence band, promote migration outer-layer reduction reaction, while enhancing efficiency inner-layer reaction. reactions both occurs on surface catalyst, significantly improving electron-hole pairs. This innovative catalyst design strategy holds great promise achieving highly efficient high-value chemical synthesis under mild conditions.

Язык: Английский

Процитировано

0
Photocatalytic Carbon Dioxide Methanation by High-Entropy Oxides: Significance of Work Function DOI
Jacqueline Hidalgo‐Jiménez, Taner Akbay, Xavier Sauvage

и другие.

Applied Catalysis B Environment and Energy, Год журнала: 2025, Номер unknown, С. 125259 - 125259

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Well-designed 1D/2D Ag3VO4/Fe2TiO5 type-II heterojunction with enhanced interfacial charge separation for visible-light-driven photocatalytic CO2 conversion DOI
Abdullah Bafaqeer,

Aniz Chennampilly Ummer,

Sani I. Abba

и другие.

Surfaces and Interfaces, Год журнала: 2025, Номер unknown, С. 106298 - 106298

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Cu2+/Cu+ pair mediated heterojunction in core–shell SiO2@Cu2GaBO5@TiO2 composite for enhanced photocatalytic methanol dehydrogenation for co-production of H2 and formaldehyde with nearly 100 % selectivity DOI
Wen Ding, Run Zhao, Huanhuan Gao

и другие.

Journal of Colloid and Interface Science, Год журнала: 2025, Номер 693, С. 137574 - 137574

Опубликована: Апрель 11, 2025

Язык: Английский

Процитировано

0
Engineering hierarchical TiO2/ZnIn2S4 hybrid heterostructure with synergistic interfaces: A dual-functional S-scheme photocatalyst for efficient CO2 reduction and norfloxacin degradation DOI
Dong‐Eun Lee, B. Moses Abraham, M. Satyanarayana

и другие.

Journal of Alloys and Compounds, Год журнала: 2024, Номер unknown, С. 176881 - 176881

Опубликована: Окт. 1, 2024

Язык: Английский

Процитировано

1
Construction of ZnIn2S4/SrTiO3/In(OH)3 heterojunction for antibiotic removal, H2 evolution and CO2 reduction DOI
Bangfu Ding, Shuai Liu, Yong Wang

и другие.

Journal of Alloys and Compounds, Год журнала: 2024, Номер 1010, С. 177574 - 177574

Опубликована: Ноя. 14, 2024

Язык: Английский

Процитировано

1
Facilitating Charge Separation of Donor–Acceptor Conjugated Microporous Polymers via Position Isomerism Strategy for Efficient CO2 Photoconversion DOI Open Access

Dandan Wang,

Xiaofei Yan,

Xinsheng Zhu

и другие.

Catalysts, Год журнала: 2024, Номер 14(10), С. 659 - 659

Опубликована: Сен. 24, 2024

Photoreduction of CO2 into the chemical feedstocks fuels provides a green way to help solve both energy crisis and carbon emission issues. Nevertheless, undesirable charge separation migration, as well rapid reverse recombination results in unsatisfactory photocatalytic activity most conjugated microporous polymers (CMPs). Herein, pair donor–acceptor (D-A) CMPs for photoconversion was developed through position isomerism by altering linkage sites. The show that Py-D27F with 2,7-site exhibits completely structure large molecular dipole moment, thus significantly accelerating transfer. As result, achieves higher yield 320.9 μmol g−1 h−1 CO2-to-CO photoreduction (without addition any photosensitizers precious metals), which is about three-fold greater than Py-D36F (3,6-site linkage). This study valuable idea exploring outstanding CMP photocatalysts efficient processing photocatalysis.

Язык: Английский

Процитировано

0