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

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер unknown

Опубликована: Дек. 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.

Язык: 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

и другие.

Chemical Engineering Journal, Год журнала: 2024, Номер 496, С. 154319 - 154319

Опубликована: Июль 27, 2024

Язык: Английский

Процитировано

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

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Фев. 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.

Язык: Английский

Процитировано

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

и другие.

Environmental Research, Год журнала: 2025, Номер 274, С. 121302 - 121302

Опубликована: Март 5, 2025

Язык: Английский

Процитировано

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

и другие.

International Journal of Biological Macromolecules, Год журнала: 2025, Номер unknown, С. 142366 - 142366

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

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

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер unknown

Опубликована: Дек. 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.

Язык: Английский

Процитировано

0