Results 291 to 300 of about 262,836 (345)

Almost 100% peroxymonosulfate conversion to singlet oxygen on single-atom CoN2+2 sites.

Angewandte Chemie, 2020
Single-atom CoN 4 active sites have demonstrated excellent efficiency in peroxymonosulfate activation. However, the identification of CoN 4 active sites and the detailed singlet oxygen generation mechanism in peroxymonosulfate activation still remain ...
Xueyue Mi, Pengfei Wang, Shizhe Xu, Lina Su, Hui Zhong, Haitao Wang, Yi Li, Sihui Zhan   +7 more
semanticscholar   +1 more source

Magnetic Susceptibility of Oxygen Adsorbed on Graphite

Physical Review Letters, 1978
The susceptibility of oxygen adsorbed on graphite indicates that magnetic transitions are present even in films of submonolayer thickness. This result contrasts with previous work on amorphous oxygen films and strongly supports the supposition that antiferromagnetic order can only be present simultaneously with configurational order.
openaire   +1 more source

Dual-Site Cobalt-Doped RuO2/TiO2 Electrocatalyst Enables Stable and Cost-Efficient Acidic Oxygen Evolution for PEM Water Electrolysis.

Journal of the American Chemical Society
Developing efficient, cost-effective, and durable electrocatalysts for proton exchange membrane water electrolysis (PEMWE) remains a significant challenge, requiring the stabilization and enhancement of catalyst activity under harsh conditions.
Jing Liang, Yuanyuan Zhao, Chenyu Yang, Shandong Zhu, Liang Wang, Ke Xu, Xueliang Mu, Yong Han, Zhi Liu, Zhiwei Zhao, Wei Liu, Fei Li, Zhangquan Peng, E. C. Tse, Qinghua Liu, Jufeng Gao, Qing Li, Jianfeng Li, Jinxuan Liu   +18 more
semanticscholar   +1 more source

A RHEED study of oxygen adsorbed on copper

Surface Science, 1982
Abstract The effect of oxygen adsorption on various clean, stepped copper surfaces at 300°C was examined by the use of Reflection High Energy Electron Diffraction (RHEED). The stability of a few high index planes is considered and the idea of this enhanced stability being due to a “fit” between the adsorption structure and the terrace width was ...
openaire   +1 more source

How Electrolyte pH Affects the Oxygen Reduction Reaction.

Journal of the American Chemical Society
Electrolyte pH is known to affect catalytic activity and selectivity for the oxygen reduction reaction (ORR). But a clear understanding of why ORR rates respond more strongly to pH over certain catalysts than others has not been developed.
Jay T. Bender, Rohan Yuri Sanspeur, Nicolas Bueno Ponce, Angel E. Valles, Alyssa K. Uvodich, Delia J. Milliron, John R. Kitchin, Joaquin Resasco   +7 more
semanticscholar   +1 more source

Chemisorption of oxygen and hydrogen on nickel films — reconstitution of the adsorbate-adsorbent interface

Surface Science, 1967
Abstract Considerable detailed information may be obtained about the nature of the adsorbate phase and the changes that take place at the adsorbate-adsorbent interface subsequent to the chemisorption of a gas at a metal surface by measurement of rapid changes of the work function of the metal.
T. Delchar, F.C. Tompkins
openaire   +1 more source

Well-Defined Co2 Dual-Atom Catalyst Breaks Scaling Relations of Oxygen Reduction Reaction.

Journal of the American Chemical Society
The 4-electron oxygen reduction reaction (ORR) under alkaline conditions is central to the development of non-noble metal-based hydrogen fuel cell technologies.
Qidi Sun, Xian Yue, Linke Yu, Fuzhi Li, Yiwei Zheng, M. Liu, Jian-Zhao Peng, Xile Hu, Hao Ming Chen, Lei Li, Jun Gu   +10 more
semanticscholar   +1 more source

Phase transition of dissociatively adsorbed oxygen on Ag(001)

Physical Review B, 2000
We show that dissociative oxygen adsorption on Ag(001) induces below room temperature a missing row 2 root 2x root 2 reconstruction of the substrate. As demonstrated by the analysis of the photoelectron diffraction patterns, the oxygen atoms sit thereby in a c(2x2) arrangement in the previous fourfold hollow sites nearly coplanar with the Ag atoms ...
ROCCA, MARIO AGOSTINO, SAVIO, LETIZIA, VATTUONE, LUCA, BURGHAUS U, PALOMBA V, NOVELLI N, BUATIER DE MONGEOT, FRANCESCO, VALBUSA, UGO, GUNNELLA R, COMELLI G, BARALDI A, LIZZIT S, PAOLUCCI G.   +12 more
openaire   +3 more sources

Infrared study of adsorption on oxygen-covered α-Fe2O3: bands due to adsorbed oxygen and their modification by co-adsorbed hydrogen or water

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1982
α-Fe2O3 heated in oxygen for one hour at 400 °C exhibits two complex regions of infrared absorption between 1350 and 1250 cm–1(the type A bands at 1350, 1325, 1300 and 1270 cm–1) and between 1100 and 900 cm–1(the type B bands at 1090, 1060, 1035, 1010, 990 and 930 cm–1).
F. Al Mashta, N. Sheppard, V. Lorenzelli, BUSCA, GUIDO   +3 more
openaire   +2 more sources

Oxygen exchange between adsorbed oxygen and cesium-added zeolite X

Microporous Materials, 1997
Abstract Oxygen exchange between adsorbed oxygen and the zeolite X which contains cesium ions in excess of the ion-exchange capacity (cesium-added zeolite X) was studied by TPD of adsorbed 18 O 2 . The desorbed oxygen molecules were composed mainly of 18 O 2 and 16 O 2 ; the fraction of 18 O 16 O was small, indicating that a pair of oxygen atoms
Fuyuki Yagi, Hideshi Hattori
openaire   +1 more source