Synergy of Copper Doping and Carbon Defect Engineering in Promoting C–C Coupling for Enhanced CO2 Photoreduction to Ethanol Activity DOI
Yi Zhou, Yaqi Wang, Shuo Chen

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 29, 2024

Photocatalytic conversion of carbon dioxide (CO2) to fuel provides an ideal pathway achieving neutrality. One significant hindrance in the reduction CO2 higher energy density multicarbon products (C2+) was difficulty coupling C–C bonds efficiently. Copper (Cu) is considered most suitable metal catalyst for form C2+ reaction (CO2RR), but it encounters challenges such as low product selectivity and slow catalytic efficiency. Herein, we constructed a defect on Cu-doped nitride (Cu–CvN), efficient photocatalytic CO2RR. The optimized (Cu–CvN-550) with shows high activity ethanol, ethanol production rate 122.6 μmol g–1 h–1 93.7%. yield 4.5 times than that Cu–CN-550 without defect. ratio Cu+/Cu0 Cu species changes regularly calcination temperature, which linearly correlated liquid DFT calculations combined experimental results revealed doping promoted activation, followed by enhanced *CO adsorption weakened hydrogenation desorption. Carbon defects lower free greatly accelerate transfer process promoting formation six-membered ring intermediate state, serving intramolecular dimerization. Synergistic thermodynamic kinetic interactions were realized through introduction defects, thereby enhancing performance production.

Language: Английский

Charge reconstruction from simultaneous Fe coordination and P/O co-doping in g-C3N4 for efficient photo-reductive recovery of uranium(VI) DOI
Xiao Zhang, Menglin Zhang, Xinyuan Li

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 154319 - 154319

Published: July 27, 2024

Language: Английский

Citations

6
Interfacial Assembly Immobilization of Tripodal Iron Terpyridyl Coordination Oligomers on Carbon Nitride for Efficient Photocatalytic CO2 Reduction DOI
Jianhong Liu, Guangbin Ji, Xihan Li

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 17, 2025

Surface modification of cheap light-absorbing materials by noble-metal-free molecular catalysts to construct high efficiency photocatalytic systems has recently attracted great research interest but remains a challenge. Here, we constructed carbon nitride-based composite photocatalysts through interfacial covalently assembling tripodal Fe(II)-terpyridyl (Fe-TerPyTa)n coordination oligomers on oxidized graphitic nitride (O-C3N4) via surface-initiated alternative reaction between TerPyTa and Fe(BF4)2. The obtained O-C3N4@(Fe-TerPyTa)n possesses visible-light-absorbing C3N4 active Fe-TerPyTa with superior capability in CO2 reduction. Due the well-defined structure integrated functionality, O-C3N4@(Fe-TerPyTa)1 hybrid catalyst displays significantly enhanced catalytic performance reduction outstanding CO selectivity (almost 100%) maximum evolution rate 91.1 μmol g-1 h-1, which is nearly 100-fold higher than that pristine O-C3N4. fluorescence emission, time-resolved fluorescence, electrochemical impedance spectrum studies indicate improved mainly attributed direct covalent coordinative interactions oligomer Such configuration can enhance charge transfer from O-C3N4 redox center Fe-TerPyTa, further passes electrons molecules produce CO. Moreover, due kinetical preference for reduce H2O-to-H2, reducing products be regulated pure its CO/H2 mixture (analogue syngas) tunable ratios changing water content solution.

Language: Английский

Citations

0
Tunable nitrogen vacancies on g-C3N4 for efficient photocatalytic CO2 reduction and H2 production DOI
Yong Huang, Tao Ding, Wenzhang Zuo

et al.

Environmental Research, Journal Year: 2025, Volume and Issue: 274, P. 121302 - 121302

Published: March 5, 2025

Language: Английский

Citations

0
A sodium alginate-polyaniline hydrogel evaporator with salt suppression ability and mechanical stability: Heterojunction construction and water treatment DOI
Yuan‐Han Yang,

Shiqi Song,

Xiao Miao

et al.

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: unknown, P. 142366 - 142366

Published: March 1, 2025

Language: Английский

Citations

0
Synergy of Copper Doping and Carbon Defect Engineering in Promoting C–C Coupling for Enhanced CO2 Photoreduction to Ethanol Activity DOI
Yi Zhou, Yaqi Wang, Shuo Chen

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 29, 2024

Photocatalytic conversion of carbon dioxide (CO2) to fuel provides an ideal pathway achieving neutrality. One significant hindrance in the reduction CO2 higher energy density multicarbon products (C2+) was difficulty coupling C–C bonds efficiently. Copper (Cu) is considered most suitable metal catalyst for form C2+ reaction (CO2RR), but it encounters challenges such as low product selectivity and slow catalytic efficiency. Herein, we constructed a defect on Cu-doped nitride (Cu–CvN), efficient photocatalytic CO2RR. The optimized (Cu–CvN-550) with shows high activity ethanol, ethanol production rate 122.6 μmol g–1 h–1 93.7%. yield 4.5 times than that Cu–CN-550 without defect. ratio Cu+/Cu0 Cu species changes regularly calcination temperature, which linearly correlated liquid DFT calculations combined experimental results revealed doping promoted activation, followed by enhanced *CO adsorption weakened hydrogenation desorption. Carbon defects lower free greatly accelerate transfer process promoting formation six-membered ring intermediate state, serving intramolecular dimerization. Synergistic thermodynamic kinetic interactions were realized through introduction defects, thereby enhancing performance production.

Language: Английский

Citations

0