Research progress on improving the performance of MXene in electrocatalytic nitrate reduction DOI Creative Commons

Bowei Su,

Yingcang Ma

E3S Web of Conferences, Journal Year: 2024, Volume and Issue: 561, P. 03012 - 03012

Published: Jan. 1, 2024

Excessive accumulation of nitrate (NO3-) can lead to eutrophication and ecological degradation, while also posing potential hazards human health. The conventional Haber-Bosch process for ammonia synthesis, effective, comes with a heavy environmental toll due its energy consumption greenhouse gas emissions. Fortunately, electrocatalytic reduction (NO3RR) offers greener alternative, converting nitrates into nitrogen ammonia, thus curbing pollution enabling recycling. MXene, characterized by high conductivity, large specific surface area, abundant functional groups, emerges as promising catalytic material NO3RR applications. This review an in-depth investigation the application MXene-based materials in NO3RR, elucidating strategies enhance MXene efficiency through functionalization, defect engineering, composite synthesis. challenges future research directions are outlined. aim is provide theoretical framework practical guidance design improvement catalysts, goal enhancing their reaction sustainability.

Language: Английский

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

21
AuCu Nanodendrite for Enhancing Electrocatalytic Nitrate Reduction Applications via Two-stage Microfluidic Fabrication Strategy DOI
Hengyuan Liu,

Yongqi Jia,

Xintong Huang

et al.

ACS Catalysis, Journal Year: 2025, Volume and Issue: unknown, P. 1230 - 1241

Published: Jan. 7, 2025

The electrocatalytic nitrate reduction reaction (NitrRR) has attracted great attention in clean ammonia production, but it unsatisfactory selectivity and sluggish dynamics, owing to the complex eight-electron transfer process. While dendritic AuCu alloy is anticipated offer competitive performance, significant challenges remain terms of insufficient structural regulation an unelucidated enhancement mechanism because complexity involved its preparation. To address these issues, we have developed a two-stage microfluidic platform that facilitates stable fabrication controllable nano dendrites (NDs). Notably, Cu content resultant NDs reaches impressive 35.34 At%, surpassing traditional liquid-phase limitations. Furthermore, dendrite structure been thoroughly validated, revealing clear structure–activity relationship. By employing precise manipulation, determined optimal composition NDs, achieving remarkable yield 21.93 mg h–1 cm–2 faradic efficiency 93.30%. Additionally, DFT calculations further elucidate performance mechanism, showing Au3Cu1 sites significantly reduce energy barrier (0.28 eV) rate-determining step (RDS: *NO → *HNO), while excessive deposition adverse effect. Our work contributes innovative guidance for design high-performance electrocatalysts.

Language: Английский

Citations

1
Time-Resolved Fourier Transform Infrared Spectroelectrochemical Investigation of Nitrate Reduction to Ammonia DOI Creative Commons
David Kumar Yesudoss,

Bright Ngozichukwu,

Ibrahima Gning

et al.

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 1688 - 1699

Published: March 14, 2025

Language: Английский

Citations

0
Electronic Structure Modulated by B-Doped Cu Promotes Electrocatalytic Nitrate Reduction for Ammonia Production DOI
Jia-Jia Wang,

Zhuodong Ou,

Chenglin Dong

et al.

ACS Catalysis, Journal Year: 2024, Volume and Issue: 15(1), P. 156 - 166

Published: Dec. 16, 2024

Electrocatalytic nitrate reduction for ammonia (eNIRR) is an production process that simultaneously removes contaminants from water. However, the lack of activity cathode catalysts used as eNIRR main limiting factor its development. Motivated by this fact, born-doped copper (BDCu) was obtained using ZnO, which easily removed at high temperature, a dispersant, combined with weakly reducing boron clusters (closo-[B12H12]2–) agent and B source during high-temperature pyrolysis. Impressively, BDCu demonstrated Faradaic efficiency 96.58% yield rate 25741.51 μg h–1 mgcat–1 toward −1.8 V (vs saturated calomel electrode). The twice in case undoped B. Evolutionary behavior NO3– to NH3 conversion detected situ Fourier-transform infrared (in FT-IR) electrochemical mass spectrometry DEMS). Experimental density functional theory (DFT) calculations explained activation water enhanced B-doped Cu, adsorption proton *H weakened, made it easy migrate away catalyst required reduction. In addition, electron-deficient provides conditions electron transfer between Cu. Cu led decrease center d-band modulated electronic properties altered transition on surface. Compared well unreduced CuO, lowered energy barrier rate-determining step (*NO → *N), allowing smoother NH3. This study strategy change structure metals B-modification thus improve performance synthesis.

Language: Английский

Citations

3
Research progress on improving the performance of MXene in electrocatalytic nitrate reduction DOI Creative Commons

Bowei Su,

Yingcang Ma

E3S Web of Conferences, Journal Year: 2024, Volume and Issue: 561, P. 03012 - 03012

Published: Jan. 1, 2024

Excessive accumulation of nitrate (NO3-) can lead to eutrophication and ecological degradation, while also posing potential hazards human health. The conventional Haber-Bosch process for ammonia synthesis, effective, comes with a heavy environmental toll due its energy consumption greenhouse gas emissions. Fortunately, electrocatalytic reduction (NO3RR) offers greener alternative, converting nitrates into nitrogen ammonia, thus curbing pollution enabling recycling. MXene, characterized by high conductivity, large specific surface area, abundant functional groups, emerges as promising catalytic material NO3RR applications. This review an in-depth investigation the application MXene-based materials in NO3RR, elucidating strategies enhance MXene efficiency through functionalization, defect engineering, composite synthesis. challenges future research directions are outlined. aim is provide theoretical framework practical guidance design improvement catalysts, goal enhancing their reaction sustainability.

Language: Английский

Citations

0