Applied Catalysis A General, Journal Year: 2023, Volume and Issue: 664, P. 119348 - 119348
Published: July 23, 2023
Language: Английский
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(19), P. 12958 - 12968
Published: May 2, 2024
The discovery of efficient and stable electrocatalysts for oxygen evolution reaction (OER) in acid is vital the commercialization proton-exchange membrane water electrolyzer. In this work, we demonstrate that short-range Ru atom arrays with near-ideal Ru–Ru interatomic distances a unique Ru–O hybridization state can trigger direct O*–O* radical coupling to form an intermediate O*–O*-Ru configuration during acidic OER without generating OOH* species. Further, suppress participation lattice dissolution active Ru. Benefiting from these advantages, as-designed array-Co3O4 electrocatalyst breaks activity/stability trade-off plagues RuO2-based electrocatalysts, delivering excellent overpotential only 160 mV at 10 mA cm–2 0.5 M H2SO4 outstanding durability 1500 h operation, representing one best acid-stable reported date. 18O-labeled operando spectroscopic measurements together theoretical investigations revealed switched on oxide path mechanism (OPM) OER. Our work not guides design improved catalysts but also encourages pursuit metal array-based other electrocatalytic reactions.
Language: Английский
Citations
90
Energy & Environmental Science, Journal Year: 2022, Volume and Issue: 16(1), P. 157 - 166
Published: Nov. 9, 2022
Surface and lattice engineered Mo-modified Ru superstructures have been prepared with high performance for bifunctional hydrogen catalysis (HER HOR).
Language: Английский
Citations
85
Advanced Science, Journal Year: 2023, Volume and Issue: 10(18)
Published: April 24, 2023
Benefitting from the maximum atom utilization efficiency, special size quantum effects and tailored active sites, single-atom catalysts (SACs) have been promising candidates for bifunctional toward water splitting. Besides, due to unique structure properties, some amorphous materials found possess better performance than their crystalline counterparts in electrocatalytic Herein, by combining advantages of ruthenium (Ru) single atoms substrates, molybdenum-based oxide stabilized single-atomic-site Ru (Ru SAs-MoO
Language: Английский
Citations
75
ACS Catalysis, Journal Year: 2023, Volume and Issue: 13(18), P. 12414 - 12424
Published: Sept. 7, 2023
Generating singlet oxygen (1O2) on single atom catalysts (SACs) in peroxymonosulfate (PMS)-based Fenton-like reactions exhibits great potential for selective degradation of contaminants complex wastewater. Clarifying the structure–activity relationship between electronic structure SACs and 1O2 generation selectivity is crucial precise design efficient catalysts, but it challenging. Herein, Cu with different structures (namely, Cu–O2X, where X = N, S, B, P, O) investigated by density functional theory calculations using adsorption terminal atoms PMS as an activity descriptor. Significantly, affected center which electron-depleted Cu-O2B site a higher atoms. Experimentally, moiety superior catalytic activation, showing nearly 100% ciprofloxacin rate 0.2250 min–1, outperforming those other counterparts. The high attributed to asymmetric accelerating faster electron transfer O–O bond stretching, lowering energy barrier key intermediates toward generation. This work provides broader perspective regulating sites at atomic level catalysts.
Language: Английский
Citations
74
Applied Catalysis A General, Journal Year: 2023, Volume and Issue: 664, P. 119348 - 119348
Published: July 23, 2023
Language: Английский
Citations
54