One-Step Strategy to Maximize Single-Atom Catalyst Utilization in Nitrate Reduction via Bidirectional Optimization of Mass Transfer and Electron Supply DOI
Xianhu Long, Fan Huang, Tao P. Zhong

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 25, 2025

Single-atom catalysts offer exceptional performance but face practical challenges due to complex synthesis and low efficiency caused by mass transfer resistance. In this study, based on a simple one-step pyrolysis method, we designed Cu single-atom catalyst with high active site exposure locally electron-deficient environment (HE Cu1-N4) achieve maximum utilization in electrocatalytic nitrate reduction (NO3RR). Using advanced characterization techniques, confirmed that its unique 3D structure enhances atom reduces (NO3-) Synchrotron radiation DFT calculations showed adjusting the coordination induces local effect atoms, increasing electrostatic attraction NO3-. HE Cu1-N4 achieved 100% NH3 selectivity across wide range of NO3- concentrations, an yield (5.09 mg h-1 mgcat-1) nearly 7-fold higher than conventional unmodified (Cu1-N2, 0.73 mgcat-1). Under pilot-scale conditions, demonstrated strong resistance interference excellent stability water systems. A modification method enhanced single atoms catalysts, significantly improving catalytic activity material. Moreover, straightforward strategy holds promise for large-scale production paving way engineering applications.

Language: Английский

Bridge‐Oxygen Bond: An Active Group for Energy Electrocatalysis DOI Open Access
Nana Zhang, Zilan Zhang,

Siwei Yan

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Abstract Energy electrocatalytic reactions such as hydrogen evolution reaction, oxygen reduction nitrogen carbon etc., are important to solve the current energy shortage and increasing environmental problems. Developing novel efficient catalyts for these has become an essential urgent issue. Catalysts incorporating bridge‐oxygen bond have received attention due their superior conductivity stability, which favorable optimizing reaction mechanism improving kinetics. This paper provides a comprehensive review encompassing concept of bond, means characterization, activity in electrocatalysis effect on catalytic performance. Through this review, it is expected furnish valuable reference rational design catalysts featuring structure across diverse reactions.

Language: Английский

Citations

0
Coordination Engineering of Pd nanoclusters for highly efficient electrocatalytic conversion of nitrate to ammonia DOI

Chen Yang,

Yunjiao Jia,

Hang Xiao

et al.

Chemical Engineering Science, Journal Year: 2025, Volume and Issue: unknown, P. 121662 - 121662

Published: April 1, 2025

Language: Английский

Citations

0
Asymmetric Cu0/Cu+ Interfaces for Efficient Electrochemical Nitrate Reduction to Ammonia Under Neutral and Ultralow Concentration DOI
Jing Zhang, Beibei Xu,

Shijie Zhao

et al.

Research Square (Research Square), Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

Abstract The electrocatalytic conversion of nitrate to ammonia in neutral media offers profound potential for sustainable nitrogen management, albeit it has been critically impeded by persistent hurdles such as the sluggish kinetics and competitive adsorption H2O molecules. Herein, we report reconstruction copper foam engineer asymmetric Cu0/Cu+ interfaces condition with ultralow concentration. Employing microstructural characterizations complemented kinetic isotope effect (KIE) analyses, uncover that Cu2O/Cu electrocatalyst fosters formation rectifying interfaces, thereby facilitating accelerating hydrogenation H-ON environments. Notably, under conditions concentration (14 ppm NO3−-N), demonstrates a remarkable 100% NO3− NH3 within 15 minutes, removal ratio 99.9% an production rate 0.39 mmol/h/cm2, effectively diminishing levels adhere national drinking water standards.

Language: Английский

Citations

0
Co-deposition of CuxFey on nickel foam promotes NH3 desorption to enhance nitrate reduction activity and ammonia selectivity DOI

Guangyuan Meng,

Xinwan Zhang,

Wenzhao Fu

et al.

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 116708 - 116708

Published: April 1, 2025

Language: Английский

Citations

0
One-Step Strategy to Maximize Single-Atom Catalyst Utilization in Nitrate Reduction via Bidirectional Optimization of Mass Transfer and Electron Supply DOI
Xianhu Long, Fan Huang, Tao P. Zhong

et al.

Environmental Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 25, 2025

Single-atom catalysts offer exceptional performance but face practical challenges due to complex synthesis and low efficiency caused by mass transfer resistance. In this study, based on a simple one-step pyrolysis method, we designed Cu single-atom catalyst with high active site exposure locally electron-deficient environment (HE Cu1-N4) achieve maximum utilization in electrocatalytic nitrate reduction (NO3RR). Using advanced characterization techniques, confirmed that its unique 3D structure enhances atom reduces (NO3-) Synchrotron radiation DFT calculations showed adjusting the coordination induces local effect atoms, increasing electrostatic attraction NO3-. HE Cu1-N4 achieved 100% NH3 selectivity across wide range of NO3- concentrations, an yield (5.09 mg h-1 mgcat-1) nearly 7-fold higher than conventional unmodified (Cu1-N2, 0.73 mgcat-1). Under pilot-scale conditions, demonstrated strong resistance interference excellent stability water systems. A modification method enhanced single atoms catalysts, significantly improving catalytic activity material. Moreover, straightforward strategy holds promise for large-scale production paving way engineering applications.

Language: Английский

Citations

0