Phosphorus‐Modulated Cobalt Nanosheets with Confined Metal Defects for Enhanced Kinetics in Nitrite‐Glycerol Co‐Electrolysis DOI Open Access
Zhangjing Yu, Kai Chen, Yun Tong

et al.

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

Published: March 27, 2025

Abstract Exploring advanced electrocatalysts for the paired electrolysis of nitrite reduction reaction (NO 2 RR) and glycerol oxidation (GOR) is significance co‐production value‐added chemicals, but remains a great challenge. Herein, novel phosphorus‐modulated cobalt nanosheet with low‐coordination metallic sites (P 3 ‐Co) developed as an electrocatalyst efficient nitrite‐glycerol co‐electrolysis. The membrane electrode assembled NO RR‖GOR electrolyzer realizes promising operation performance high Faradaic efficiencies yields NH (98.2%, 29.3 mg h −1 cm −2 ) formate (93.4%, 85.7 at 1.5 V, well superior catalytic stability over long‐term 300 100 mA . in situ characterizations theoretical calculations are employed to reveal origin intrinsic activity P ‐Co, suggesting that metal Co defects P‐modulation beneficial optimizing electronic structure adsorption/activation barriers N‐containing intermediates accelerated conversion kinetics both GOR RR. This work offers guidance exploiting highly‐active generation high‐value‐added products.

Language: Английский

Intermetallic PtSn Nanosheets with p–d Orbital Hybridization for Selective Hydroxylamine Electrosynthesis DOI
Yongping Li,

Jingmin Ge,

Jiawei Zhu

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: March 9, 2025

The electrocatalytic nitrate reduction to hydroxylamine (NH2OH) is a challenging catalytic process that has gained significant attention. However, its performance hindered by the low selectivity of electrocatalysts. Here, intermetallic PtSn nanosheets with p–d orbital hybridization have been synthesized, which significantly enhances NH2OH. Faradaic efficiency NH2OH reaches maximum 82.83 ± 1.55% at −0.10 V versus reversible hydrogen electrode (vs RHE), and yield achieves 6.15 0.32 mmol h–1 mgcat–1 −0.25 vs RHE. Mechanistic studies reveal between p-block Sn d-block Pt effectively adsorption desorption boost electrochemical synthesis. Given their excellent in synthesis NH2OH, are utilized as cathode an alkaline-acid hybrid Zn–NO3– battery facilitate production achieving FE 80.42%.

Language: Английский

Citations

0
Phosphorus‐Modulated Cobalt Nanosheets with Confined Metal Defects for Enhanced Kinetics in Nitrite‐Glycerol Co‐Electrolysis DOI Open Access
Zhangjing Yu, Kai Chen, Yun Tong

et al.

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

Published: March 27, 2025

Abstract Exploring advanced electrocatalysts for the paired electrolysis of nitrite reduction reaction (NO 2 RR) and glycerol oxidation (GOR) is significance co‐production value‐added chemicals, but remains a great challenge. Herein, novel phosphorus‐modulated cobalt nanosheet with low‐coordination metallic sites (P 3 ‐Co) developed as an electrocatalyst efficient nitrite‐glycerol co‐electrolysis. The membrane electrode assembled NO RR‖GOR electrolyzer realizes promising operation performance high Faradaic efficiencies yields NH (98.2%, 29.3 mg h −1 cm −2 ) formate (93.4%, 85.7 at 1.5 V, well superior catalytic stability over long‐term 300 100 mA . in situ characterizations theoretical calculations are employed to reveal origin intrinsic activity P ‐Co, suggesting that metal Co defects P‐modulation beneficial optimizing electronic structure adsorption/activation barriers N‐containing intermediates accelerated conversion kinetics both GOR RR. This work offers guidance exploiting highly‐active generation high‐value‐added products.

Language: Английский

Citations

0