Two-Dimensional Kagome Covalent Organic Frameworks with Single Atomic Co Sites for Superior Photocatalytic CO2 Reduction DOI
Yuhui Wang, Tingting Sun, Tianyu Zheng

et al.

ACS Materials Letters, Journal Year: 2023, Volume and Issue: 6(1), P. 140 - 152

Published: Dec. 7, 2023

Covalent organic frameworks (COFs) have attracted great attention as pivotal photocatalysts for efficient CO2 photoreduction into value-added fuels, which hold promise simultaneously mitigating global warming and the energy crisis. However, synthesis of COFs with a high crystalline state hierarchically porous structure to boost is still an enormous challenge rarely reported, probably because dependence upon monomers rigorous preparation conditions. Herein, series functional kagome (kg m) topologic 2D crystallinity porosity were synthesized based on condensation 4,4′,4″,4‴-(ethene-1,1,2,2-tetrayl)tetraaniline (ETTA) 2,2′-bipyridyl-5,5′-dialdehyde (Bpy-CHO) building units combined postmodification strategy, named ETTA-Bpy-COF-M (M = H, Fe, Co, Ni, or Cu). Stimulated by unique kg m topologized framework well-ordered hierarchical micropores mesopores, abundant exposed atomic Co sites, remarkable photoelectrical performance, ETTA-Bpy-COF-Co used photocatalyst catalyzing CO2-to-CO photoconversion exhibits CO yield rate (9398.14 μmol g–1 h–1), large selectivity (92.73%), good durability. Experimental theoretical analyses demonstrated that superior performance catalyzed was attributed desirable cooperative contribution topological hexagonal triangular pores well active can promote photoexcited charge carrier kinetics, enhance adsorption activation, reduce barriers *COOH generation desorption. This work opens new way COF photosynthesis reduction offers precious insights related studies in future.

Language: Английский

Single-atom Cu sites on covalent organic frameworks with Kagome lattices for visible-light-driven CO2 reduction to propylene DOI

Yuanjun Hu,

Guanhui Liu,

Ting Song

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 361, P. 124587 - 124587

Published: Sept. 11, 2024

Language: Английский

Citations

7
A reversible photochromic covalent organic framework DOI Creative Commons

Xue‐Tian Li,

Mengjing Li,

Yuan-Liang Tian

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Oct. 1, 2024

Language: Английский

Citations

7
Single aptamer hairpin DNA-based response system combined with COF-based signal amplification strategy for ultrasensitive detection of cancer-associated thrombin DOI
Youfa Wang, Jin Wang, Rui Wang

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 489, P. 151224 - 151224

Published: April 16, 2024

Language: Английский

Citations

6
Synthetic Strategies to Extended Aromatic Covalent Organic Frameworks DOI Creative Commons
Tania Prieto, Clara Ponte, Roman Guntermann

et al.

Chemistry - A European Journal, Journal Year: 2024, Volume and Issue: 30(45)

Published: May 21, 2024

π-Conjugated materials are highly attractive owing to their unique optical and electronic properties. Covalent organic frameworks (COFs) offer a great opportunity for precise arrangement of building units in π-conjugated crystalline matrix tuning the properties through choice functionalities or post-synthetic modification. With this review, we aim at summarizing both most representative as well emerging strategies synthesis COFs. We give examples direct using large, π-extended blocks. COFs featuring fully conjugated linkages such vinylene, pyrazine, azole discussed. Then, modification methods that result extension COF π-system reviewed. Throughout, mechanistic insights presented when available. In context utilization film devices, conduct concise survey prominent layer deposition techniques reported aptness fused aromatic systems.

Language: Английский

Citations

6
Two-Dimensional Kagome Covalent Organic Frameworks with Single Atomic Co Sites for Superior Photocatalytic CO2 Reduction DOI
Yuhui Wang, Tingting Sun, Tianyu Zheng

et al.

ACS Materials Letters, Journal Year: 2023, Volume and Issue: 6(1), P. 140 - 152

Published: Dec. 7, 2023

Covalent organic frameworks (COFs) have attracted great attention as pivotal photocatalysts for efficient CO2 photoreduction into value-added fuels, which hold promise simultaneously mitigating global warming and the energy crisis. However, synthesis of COFs with a high crystalline state hierarchically porous structure to boost is still an enormous challenge rarely reported, probably because dependence upon monomers rigorous preparation conditions. Herein, series functional kagome (kg m) topologic 2D crystallinity porosity were synthesized based on condensation 4,4′,4″,4‴-(ethene-1,1,2,2-tetrayl)tetraaniline (ETTA) 2,2′-bipyridyl-5,5′-dialdehyde (Bpy-CHO) building units combined postmodification strategy, named ETTA-Bpy-COF-M (M = H, Fe, Co, Ni, or Cu). Stimulated by unique kg m topologized framework well-ordered hierarchical micropores mesopores, abundant exposed atomic Co sites, remarkable photoelectrical performance, ETTA-Bpy-COF-Co used photocatalyst catalyzing CO2-to-CO photoconversion exhibits CO yield rate (9398.14 μmol g–1 h–1), large selectivity (92.73%), good durability. Experimental theoretical analyses demonstrated that superior performance catalyzed was attributed desirable cooperative contribution topological hexagonal triangular pores well active can promote photoexcited charge carrier kinetics, enhance adsorption activation, reduce barriers *COOH generation desorption. This work opens new way COF photosynthesis reduction offers precious insights related studies in future.

Language: Английский

Citations

14