Iron‐Based Nanocatalysts for Electrochemical Nitrate Reduction DOI

Chuqi Wang,

Yingbin Zhang, Hongxia Luo

et al.

Small Methods, Journal Year: 2022, Volume and Issue: 6(10)

Published: Sept. 14, 2022

Abstract Nitrate has a high level of stability and persistence in water, endangering human health aquatic ecosystems. Due to its reliability efficiency, the electrochemical nitrate reduction reaction (NO 3 RR) is regarded as best available option for mitigating excess water wastewater, especially removal trace levels nitrate. One most critical factors are catalysts, which directly affect efficiency removal. Iron‐based nanocatalysts, have advantages nontoxicity, wide availability, low cost, emerged promising NO RR material recent years. This review covers major aspects iron‐based nanocatalysts RR, including synthetic methods, structural design, performance enhancement, electrocatalytic test, mechanism. The progress mechanism functional modified structures reviewed from perspectives loading, doping, assembly strategies, order realize conversion pollutant harmless nitrogen or ammonia other sustainable products. Finally, challenges future directions development low‐cost highly‐efficient explored.

Language: Английский

Active hydrogen boosts electrochemical nitrate reduction to ammonia DOI Creative Commons

Kui Fan,

Wenfu Xie, Jinze Li

et al.

Nature Communications, Journal Year: 2022, Volume and Issue: 13(1)

Published: Dec. 27, 2022

Electrochemical nitrate reduction to ammonia is a promising alternative strategy the traditional Haber-Bosch process but suffers from low Faradaic efficiency and limited yield due sluggish multi-electron/proton-involved steps. Herein, we report typical hollow cobalt phosphide nanosphere electrocatalyst assembled on self-supported carbon nanosheet array synthesized with confinement that exhibits an extremely high rate of 8.47 mmol h

Language: Английский

Citations

419
Recent advances in nanostructured heterogeneous catalysts for N-cycle electrocatalysis DOI Creative Commons
Jie Liang, Qian Liu, Abdulmohsen Ali Alshehri

et al.

Deleted Journal, Journal Year: 2022, Volume and Issue: 1, P. e9120010 - e9120010

Published: May 30, 2022

To restore the natural nitrogen cycle (N-cycle), artificial N-cycle electrocatalysis with flexibility, sustainability, and compatibility can convert intermittent renewable energy (e.g., wind) to harmful or value-added chemicals minimal carbon emissions. The background of such N-cycles, as fixation, ammonia oxidation, nitrate reduction, is briefly introduced here. discussion emerging nanostructures in various conversion reactions focused on architecture/compositional design, electrochemical performances, reaction mechanisms, instructive tests. Energy device advancements for achieving more functions well in situ/operando characterizations toward understanding key steps are also highlighted. Furthermore, some recently proposed less discussed C–N coupling summarized. We classify inorganic sources that each other under an applied voltage into three types, namely, abundant nitrogen, toxic (nitrite), oxides, useful compounds ammonia, hydrazine, hydroxylamine, goal providing critical insights strategies facilitate development our circular economy.

Language: Английский

Citations

349
Advances in ammonia electrosynthesis from ambient nitrate/nitrite reduction DOI Creative Commons
Jie Liang, Zixiao Li, Longcheng Zhang

et al.

Chem, Journal Year: 2023, Volume and Issue: 9(7), P. 1768 - 1827

Published: June 21, 2023

Language: Английский

Citations

277
Efficient Ammonia Electrosynthesis and Energy Conversion through a Zn‐Nitrate Battery by Iron Doping Engineered Nickel Phosphide Catalyst DOI
Rong Zhang, Ying Guo, Shaoce Zhang

et al.

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(13)

Published: Feb. 9, 2022

Abstract The electrocatalytic nitrate reduction reaction (NO 3 ‐RR) to ammonia (NH ) offers a promising alternative approach for NH production and nitrate‐based voltaic cells which can deliver both electricity as products, are also highly attractive. However, nitrate‐to‐NH conversion involves proton‐assisted multiple‐electron transfer process with considerable kinetic barrier, underlying the need efficient catalysts NO – RR. A Zn‐nitrate battery is reported enable “killing three birds one stone” strategy energy supply, removal of pollutants iron doped nickel phosphide (Fe/Ni 2 P) RR catalyst electrode. Iron doping induces downshift d‐band center Ni atoms Fermi level, allowing optimization Gibbs free energies intermediates. Fe/Ni P exhibits 94.3% Faradaic efficiency (FE) nearly 100% at –0.4 V vs. reversible hydrogen electrode (RHE). Further applying this electrocatalyst cathode material, novel power density 3.25 mW cm –2 FE 85.0% production. This work enriches application Zn‐based batteries in field electrocatalysis highlights promise bimetal

Language: Английский

Citations

240
Electrochemical Nitrate Reduction: Ammonia Synthesis and the Beyond DOI
Yuecheng Xiong, Yunhao Wang, Jingwen Zhou

et al.

Advanced Materials, Journal Year: 2023, Volume and Issue: 36(17)

Published: June 9, 2023

Natural nitrogen cycle has been severely disrupted by anthropogenic activities. The overuse of N-containing fertilizers induces the increase nitrate level in surface and ground waters, substantial emission oxides causes heavy air pollution. Nitrogen gas, as main component air, used for mass ammonia production over a century, providing enough nutrition agriculture to support world population increase. In last decade, researchers have made great efforts develop processes under ambient conditions combat intensive energy consumption high carbon associated with Haber-Bosch process. Among different techniques, electrochemical reduction reaction (NO

Language: Английский

Citations

225
Ambient Ammonia Synthesis via Electrochemical Reduction of Nitrate Enabled by NiCo2O4 Nanowire Array DOI
Qian Liu, Lisi Xie, Jie Liang

et al.

Small, Journal Year: 2022, Volume and Issue: 18(13)

Published: Feb. 10, 2022

NiCo2 O4 nanowire array on carbon cloth (NiCo2 /CC) is proposed as a highly active electrocatalyst for ambient nitrate (NO3- ) reduction to ammonia (NH3 ). In 0.1 m NaOH solution with NaNO3 , such /CC achieves high Faradic efficiency of 99.0% and large NH3 yield up 973.2 µmol h-1 cm-2 . The superior catalytic activity comes from its half-metal feature optimized adsorption energy due the existence Ni in crystal structure. A Zn-NO3- battery cathode also shows record-high performance.

Language: Английский

Citations

218
Electrocatalytic nitrate reduction to ammonia on defective Au1Cu (111) single-atom alloys DOI
Yuanzheng Zhang, Xiang Chen, Weilai Wang

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 310, P. 121346 - 121346

Published: March 26, 2022

Language: Английский

Citations

212
Pulsed Nitrate-to-Ammonia Electroreduction Facilitated by Tandem Catalysis of Nitrite Intermediates DOI
Panpan Li, Ran Li, Yuanting Liu

et al.

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(11), P. 6471 - 6479

Published: March 10, 2023

Electroreduction of nitrate to ammonia offers a promising pathway for nutrient recycling and recovery from wastewater with energy environmental sustainability. There have been considerable efforts on the regulation reaction pathways facilitate nitrate-to-ammonia conversion over competing hydrogen evolution but only limited success. Here, we report Cu single-atom gel (Cu SAG) electrocatalyst that produces NH3 both nitrite under neutral conditions. Given unique mechanism NO2- activation SAGs spatial confinement strengthened kinetics, pulse electrolysis strategy is presented cascade accumulation intermediates during NO3- reduction prohibited competition reaction, thus substantially enhancing Faradaic efficiency yield rate production compared constant potential electrolysis. This work underlines cooperative approach three-dimensional (3D) framework structures highly efficient enabled by tandem catalysis unfavorable intermediates.

Language: Английский

Citations

211
Electrocatalytic conversion of nitrate waste into ammonia: a review DOI
Jayaraman Theerthagiri,

Juhyeon Park,

Himadri Tanaya Das

et al.

Environmental Chemistry Letters, Journal Year: 2022, Volume and Issue: 20(5), P. 2929 - 2949

Published: July 9, 2022

Language: Английский

Citations

194
Enabled Efficient Ammonia Synthesis and Energy Supply in a Zinc–Nitrate Battery System by Separating Nitrate Reduction Process into Two Stages DOI Creative Commons
Haifeng Jiang, Gao‐Feng Chen, Aleksandr Savateev

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(13)

Published: Feb. 2, 2023

The aqueous electrocatalytic reduction of NO3- into NH3 (NitrRR) presents a sustainable route applicable to production and potentially energy storage. However, the NitrRR involves directly eight-electron transfer process generally required large overpotential (<-0.2 V versus reversible hydrogen electrode (vs. RHE)) reach optimal efficiency. Here, inspired by biological nitrate respiration, was separated two stages along [2+6]-electron pathway alleviate kinetic barrier. system employed Cu nanowire catalyst produces NO2- with current efficiencies 91.5 % 100 %, respectively at lower overpotentials (>+0.1 vs. RHE). high efficiency for such further explored in zinc-nitrate battery. This battery could be specified output voltage 0.70 V, an average density 566.7 Wh L-1 10 mA cm-2 power 14.1 mW , which is well beyond all previously reported similar concepts.

Language: Английский

Citations

171