Mixed Fe-Mo carbide prepared by a sonochemical synthesis as highly efficient nitrate reduction electrocatalyst DOI
Jiajun Hu, Silvio Osella, Eduardo Arizono dos Reis

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2024, Volume and Issue: 357, P. 124247 - 124247

Published: May 28, 2024

Language: Английский

Urea Electrosynthesis from Nitrate and CO2 on Diatomic Alloys DOI
Kai Chen, Danyang Ma, Ying Zhang

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(30)

Published: June 14, 2024

Abstract Urea electrosynthesis from co–electrolysis of NO 3 − and CO 2 (UENC) offers a promising technology for achieving sustainable efficient urea production. Herein, diatomic alloy catalyst (CuPd 1 Rh –DAA), with mutually isolated Pd atoms alloyed on Cu substrate, is theoretically designed experimentally confirmed to be highly active selective UENC catalyst. Combining theoretical computations operando spectroscopic characterizations reveals the synergistic effect –Cu sites promote via tandem catalysis mechanism, where site triggers early C–N coupling promotes *CO –to–*CO NH steps, while facilitates subsequent protonation step *COOHNH toward formation. Impressively, CuPd –DAA assembled in flow cell presents highest Faradaic efficiency 72.1% yield rate 53.2 mmol h −1 g cat at −0.5 V versus RHE, representing nearly performance among all reported catalysts.

Language: Английский

Citations

103
Tandem Electrocatalytic Reduction of Nitrite to Ammonia on Rhodium–Copper Single Atom Alloys DOI

Jiaqi Xiang,

Chaofan Qiang,

Shiyao Shang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(36)

Published: April 23, 2024

Abstract Electrocatalytic reduction of NO 2 − to NH 3 (NO RR) presents a fascinating approach for simultaneously migrating pollutants and producing valuable . In this study, single‐atom Rh‐alloyed copper (CuRh 1 ) is explored as highly active selective catalyst toward the RR. Combined theoretical calculations in situ FTIR/EPR spectroscopic experiments uncover synergistic effect Rh Cu promote RR energetics CuRh through tandem catalysis pathway, which activates preliminary adsorption hydrogenation → *NO *NOOH *NO), while generated on then transferred substrate promotes rate‐determining step *NHO synthesis. As result, equipped flow cell an unprecedented yield rate 2191.6 µmol h −1 cm −2 ‐Faradaic efficiency 98.9% at high current density 322.5 mA , well long‐term stability 100 electrolysis.

Language: Английский

Citations

62
p-d hybridized In-Co dual sites promote nitrite electroreduction to ammonia at high current density DOI
Nana Zhang,

Yuying Wan,

Kai Chen

et al.

Nano Energy, Journal Year: 2024, Volume and Issue: 125, P. 109594 - 109594

Published: April 6, 2024

Language: Английский

Citations

44
Electrochemical Nitrate Reduction to Ammonia on CuCo Nanowires at Practical Level DOI Creative Commons
Kouer Zhang,

Pengting Sun,

Yulun Huang

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(44)

Published: May 27, 2024

Abstract Electrochemical reduction of nitrate (NO 3 RR) holds great promise for environmentally friendly ammonia production. Tandem catalysis is a promising strategy boosting the NO RR and inhibiting side effects, but it still challenged by lacking well‐designed catalysts to drive this catalytic process. Herein, study develops CuCo branched nanowires (CuCo NW) catalyst, which efficiently converts − NH on Co (111) Cu crystal facets through tandem mechanism. The in situ grown NW foam demonstrates remarkable Faraday efficiency 90.3% at 1.0 A cm −2 maintains stable operation 200 h 100 mA flow reactor. Density functional theory calculations suggest that initial absorption subsequent deoxygenation *NO leading formation 2 , followed its transfer further conversion *NH establish an optimal pathway managing rate‐determining steps individual surfaces RR. To showcase practical application scaling‐up prototype reactor continuous production, realizing gram‐level yield rate 1474.09 mg −1 91.26% practical‐level 20.0 A.

Language: Английский

Citations

40
P-Block Antimony–Copper Single-Atom Alloys for Selective Nitrite Electroreduction to Ammonia DOI
Fuzhou Wang,

Shiyao Shang,

Zeyi Sun

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(20), P. 13141 - 13149

Published: May 8, 2024

Electrocatalytic reduction of NO2– to NH3 (NO2RR) offers an effective method for alleviating pollution and generating valuable NH3. Herein, a p-block single-atom alloy, namely, isolated Sb alloyed in Cu substrate (Sb1Cu), is explored as durable high-current-density NO2RR catalyst. As revealed by the theoretical calculations operando spectroscopic measurements, we demonstrate that Sb1 incorporation can not only hamper competing hydrogen evolution reaction but also optimize d-band center Sb1Cu intermediate adsorption energies boost protonation energetics NO2–-to-NH3 conversion. Consequently, integrated flow cell achieves outstanding yield rate 2529.4 μmol h–1 cm–2 FENH3 95.9% at high current density 424.2 mA cm–2, well durability 100 h electrolysis.

Language: Английский

Citations

39
“Capture-activation-recapture” mechanism-guided design of double-atom catalysts for electrocatalytic nitrogen reduction DOI
Cheng He,

Shiqi Yan,

Wenxue Zhang

et al.

Journal of Energy Chemistry, Journal Year: 2024, Volume and Issue: 96, P. 437 - 447

Published: May 15, 2024

Language: Английский

Citations

38
Advancements in Electrocatalytic Nitrogen Reduction: A Comprehensive Review of Single‐Atom Catalysts for Sustainable Ammonia Synthesis DOI
Xianhu Long, Fan Huang,

Zhangnan Yao

et al.

Small, Journal Year: 2024, Volume and Issue: 20(32)

Published: March 22, 2024

Abstract Electrocatalytic nitrogen reduction technology seamlessly aligns with the principles of environmentally friendly chemical production. In this paper, a comprehensive review recent advancements in electrocatalytic NH 3 synthesis utilizing single‐atom catalysts (SACs) is offered. Into research and applications three categories SACs: noble metals (Ru, Au, Rh, Ag), transition (Fe, Mo, Cr, Co, Sn, Y, Nb), nonmetallic (B) context ammonia delved. In‐depth insights into material preparation methods, coordination patterns, characteristics reaction (NRR) are provided. The systematic comparison capabilities various SAC types offers framework for their integration NRR. Additionally, challenges, potential solutions, future prospects incorporating SACs endeavors discussed.

Language: Английский

Citations

28
Electrocatalytic nitrite reduction to ammonia on In1Cu single atom alloy DOI
Fuzhou Wang,

Shiyao Shang,

Zeyi Sun

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 489, P. 151410 - 151410

Published: April 17, 2024

Language: Английский

Citations

22
Phosphorus-doped Ti3C2Tx MXene nanosheets enabling ambient NH3 synthesis with high current densities DOI

Yuchuan Qi,

Xianghua Hou, Ziying He

et al.

Chemical Communications, Journal Year: 2024, Volume and Issue: 60(66), P. 8728 - 8731

Published: Jan. 1, 2024

Herein, we show that P-doped Ti

Language: Английский

Citations

22
CoNiOOH nanosheets array enables highly effective value-added chemicals production via nitrite and sulfide electrolysis DOI
Miaosen Yang, Tianran Wei,

Chunhui Zeng

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: unknown, P. 155799 - 155799

Published: Sept. 1, 2024

Language: Английский

Citations

20