Results 101 to 110 of about 11,563 (263)

Correlated local distortions of the TlO layers in Tl$_2$Ba$_2$CuO$_{y}$: An x-ray absorption study

, 1994
We have used the XAFS (x-ray-absorption fine structure) technique to investigate the local structure about the Cu, Ba, and Tl atoms in orthorhombic Tl-2201 with a superconducting transition temperature T$_c$=60 K.
A. Filipponi, A. I. Frenkel, A. W. Hewat, A. W. Hewat, B. H. Toby, B. H. Toby, B. K. Agrawal, C. C. Torardi, C. H. Booth, C. Ström, C. Ström, E. A. Stern, E. A. Stern, F. Bridges, F. Bridges, F. Bridges, G. G. Li, G. G. Li, G. G. Li, G. G. Li, G. G. Li, G. G. Li, H. H. Otto, H. Romberg, H. Yamaguchi, I. D. Brown, I. D. Brown, I. D. Brown, J. B. Boyce, J. B. Boyce, J. B. Parise, J. B. Parise, J. C. Fuggle, J. D. FitzGerald, J. J. Rehr, J. J. Rehr, J. M. Tarascon, J. Mustre de Leon, J. Mustre de Leon, K. K. Saini, M. Kikuchi, N. N. Kolesnikov, P. D'Angelo, P. G. Allen, R. Beyers, R. J. Cava, R. J. Cava, R. S. Liu, R. V. Kasowski, S. D. Conradson, S. Nakajima, S. Nakajima, S. S. P. Parkin, S.-G. Eriksson, T. Claeson, T. Egami, T. M. Hayes, T. Manako, T. Oku, T. Suzuki, T. Suzuki, V. J. Emery, W. Dmowksi, Y. Shimakawa, Y. Shimakawa, Y. Shimakawa, Z. Z. Sheng   +66 more
core   +1 more source

Lunar‐Based Photothermal CO2 Reduction Strategy: Self‐Evolving Transient Active Interface and Band Engineering

Advanced Science, EarlyView.
A self‐evolving Pd/Ov‐FeTiO3 photothermal catalyst, inspired by lunar soil, enables efficient extraterrestrial CO2 conversion. The formation of transient active interfaces and oxygen vacancies extends light absorption to the infrared range and optimizes electron transfer.
Yahang Wang, Yuhuan Li, Quanxin Wang, Deng Li, Pakkin Leong, Meng Wang, Shi Feng, Runyang Mo, Xianjin Shi, Xiaohui Li, Gangqiang Zhu, Chipui Tang   +11 more
wiley   +1 more source

Hydrothermal Embedding of Pd Single Atoms Into SnO2 for Efficient CO Oxidation

Advanced Science, EarlyView.
By applying hydrothermal regulation to SnO2‐supported PdO, we achieve atomic dispersion of Pd into the SnO2 lattice, which activates the lattice oxygen neighboring Pd atoms to generate oxygen vacancies and facilitates subsequent O2 activation, thereby promoting CO oxidation to proceed via a low‐energy‐barrier MvK pathway while avoiding CO poisoning ...
Yingsheng An, Min Xiao, Mengyuan Zhang, Yao Lv, Yanwei Sun, Zhi Liu, Wenbo Pei, Hao Guo, Guangyan Xu, Yong Yan, Sheng Dai, Yunbo Yu, Hong He   +12 more
wiley   +1 more source

Selective Hydrogenation of Formamide to Methanol Over Supported Platinum Catalysts

Angewandte Chemie, EarlyView.
Amine–CO2 adducts can be hydrogenated to formamides and subsequently to methanol under mild conditions (<150°C), establishing an integrated CO2 capture‐and‐conversion route in a heterogeneous system that directly links amine sorbent cycling with methanol synthesis.
Xuetao Qin, XinXin Tian, Shou Qiu, Han Yan, Haijun Jiao, Henrik Junge, Matthias Beller   +6 more
wiley   +2 more sources

Hydroxyl-Group Identification Using O K-Edge XAFS in Porous Glass Fabricated by Hydrothermal Reaction and Low-Temperature Foaming

Molecules, 2019
Porous glass was prepared by the hydrothermal reaction of sodium borosilicate glass, and oxygen-ion characterization was used to identify the hydroxyl groups in its surface area.
Masanori Suzuki, Shigehiro Maruyama, Norimasa Umesaki, Toshihiro Tanaka   +3 more
doaj   +1 more source

W‐N‐C Tandem Catalytic Centers Mediating Efficient Charge Transfer for the Enhanced Radical‐Path U(VI) Photoreduction

Advanced Science, EarlyView.
This work constructed a tandem W−N−C center to simultaneously achieve the regulation of reaction pathways and optimization of charge separation efficiency. The Lewis‐acidic W6+ sites activated O2 to generate O2−$O_2^ - $, with enhanced charge separation via electronic modulation, steering U(VI) reduction down an efficient radical pathway.
Zhiyao Wu, Jinhao Xu, Hao Fu, Yuxiang Deng, Nannan Wang, Wenhua Zhang, Peng Zhang, Zhiwei Huang, Zhenpeng Cui, Shu‐Xian Hu, Wangsuo Wu, Duoqiang Pan   +11 more
wiley   +1 more source

Palladium‐Doping‐Enabled Interface Synergy for Superb Ampere Level Ammonia Electrosynthesis From Nitrate

Angewandte Chemie, EarlyView.
Isolated Pd sites in a metallic Co matrix boost nitrate‐to‐ammonia conversion. Pd doping optimizes intermediate adsorption and reconstructs the interfacial microenvironment, promoting cation enrichment and a hydrogen‐down‐oriented water network. This dual modulation facilitates proton transfer and intermediate stabilization, enabling high ammonia ...
Qun He, Chuanqiang Wu, Zhangsheng Shi, Dongxue Yu, Wei Jiang, Li Song, Xin Wang   +6 more
wiley   +2 more sources

Mn‐Induced Support Stabilization and Ir Electronic Activation Enable Acid‐Stable, Low‐Loading IrO2 Water Oxidation

Advanced Science, EarlyView.
This study introduces a dual‐regulation strategy utilizing a Mn‐doped Co3O4 support to enhance the activity and stability of low‐loading IrO2 catalysts for acidic water oxidation. Mn induces strong Mn─O covalency to reinforce the spinel lattice and activates Ir sites via interfacial electron transfer.
Zhe Liu, Guoxin Ma, Shixiang Yu, Rui Jin, Fei Wang, Xinxin Wen, Mengxin Chen, Yani Ding, Jia Liu, Xinkai Guo, Diab Khalafallah, Hassan Fouad, Xiao Ren, Siwei Li   +13 more
wiley   +1 more source

A Decoupled Cycling Architecture of Asymmetric Zinc‐Air Battery Unlocks Stable Catalyst Strategy and pH‐Dynamic Influence

Angewandte Chemie, EarlyView.
A decoupled cycling architecture along with cost‐effective membrane and efficient catalyst is developed for asymmetric zinc‐air battery. The decoupled design ensures stable operation of catalyst and the pH‐dynamic influence on battery performance is explored, which provides paths for efficient utilization of pH‐decoupling electrolytes.
Yeshu Tan, Ruinan Wang, Jiawen Huang, Runzhe Chen, Jiaxin Yuan, Siyuan Zhao, Meng Ni   +6 more
wiley   +2 more sources

Phase transition from fcc to bcc structure of the Cu-clusters during nanocrystallization of Fe85.2Si1B9P4Cu0.8 soft magnetic alloy

AIP Advances, 2014
A role of Cu on the nanocrystallization of an Fe85.2Si1B9P4Cu0.8 alloy was investigated by X-ray absorption fine structure (XAFS) and transmission electron microscopy (TEM). The Cu K-edge XAFS results show that local structure around Cu is disordered for
Masahiko Nishijima, Makoto Matsuura, Kana Takenaka, Akira Takeuchi, Hironori Ofuchi, Akihiro Makino   +5 more
doaj   +1 more source