Results 111 to 120 of about 23,193 (311)

Application of EXAFS to molten salts and ionic liquid technology

, 2005
This paper describes the use of extended X-ray absorption fine structure spectroscopy (EXAFS) to examine the structure of molten salts and ionic liquids and species dissolved in them.
Hardacre, Christopher; id_orcid, Hardacre C, Hardacre, Christopher   +2 more
core   +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

用激光等离子体作X射线源的EXAFS技术

, 1993
本文提出了扩展X射线吸收精细结构(EXAFS)实验的总体设计方案,及靶场各部分的组成和运行概况.重点叙述了应用平晶谱仪进行分光的EXAFS实验,并对所得结果进行数据分析.在实验中,用铁、钽作靶材进行铝的EXAFS谱实验，应用付利叶变换对数据分析后得到的激光－EXAFS谱进行处理 ...
吴京丹
core  

Trace Ru‐Doped PtCuRu@PtRu Core‐Shell Electrocatalyst for CO‐Resilient Methanol Oxidation

Advanced Science, EarlyView.
We engineered a trace Ru‐doped PtCuRu@PtRu core‐shell nanostructure. This design exploits lattice mismatch‐induced compressive strain between the PtCuRu ternary core and trace Ru‐doped Pt‐rich shell, systematically downshifting the Pt d‐band center to weaken *CO adsorption energetics.
Tianrui Xue, Shiyue Xing, Zhongliang Liu, Yiting Song, Jianyi Zhang, Miaomiao Liu, Huihui Li, Chunzhong Li   +7 more
wiley   +1 more source

Local structure of solid and liquid gold probed by reverse Monte Carlo analysis of X-ray absorption data

Journal of Synchrotron Radiation
The increase in computational capabilities of modern computers has allowed us to develop new accurate methods for EXAFS (extended X-ray absorption fine structure) data-analysis.
Nodoka Hara, Fabio Iesari, Toshihiro Okajima, Andrea Di Cicco   +3 more
doaj   +1 more source

Quick scanning exafs: First experiments

, 1988
By speeding up a conventional X-ray monochromator by a factor of 100 using the quick scanning EXAFS (QEXAFS) mode the data collection time required for a typical EXAFS scan was reduced to a couple of seconds, making XANES scans in a split second possible.
Frahm, Ronald
core   +1 more source

Asymmetrically Coordinated Dual‐Atom Manganese Contrast Agents Enabling High‐Efficiency T1 Enhanced MRI for Precise Tumor Visualization

Advanced Science, EarlyView.
A novel dual‐atom manganese MRI contrast agent (Mn‐BN) with a unique asymmetric coordination geometry provided a promising platform for sensitive and specific tumor imaging. In mice model, Mn‐BN nanoparticles precisely functioned as both a primary tumor‐specific enhancer in subcutaneous models and a hepatocyte‐specific agent in liver metastases models ...
Ding Yang, Qing‐Yang Li, Jianli Liang, Gengyou Li, Nan Sun, Qianqian Song, Haitao Zhu, Xiaoting Li, Zechuan Li, Jiankai Dong, Weisheng Guo, Yafang Xiao, Chun‐Sing Lee, Ying‐Shi Sun   +13 more
wiley   +1 more source

Local Structure Analysis of Heavy Fermion Ce₂Pt₆Ga₁₅ with a Honeycomb Structure Using Extended X-Ray Absorption Fine Structure

Metals
Ce2Pt6Ga15 is a heavy fermion compound near the quantum critical point (QCP). Its crystal structure may exhibit magnetic frustration due to a honeycomb arrangement; however, stacking faults in the crystal hinder structural analysis.
Yuji Matsumoto, Yuki Watabe, Fabio Iesari, Masakatsu Osumi, Kyugo Ota, Yoshinori Haga, Keisuke Hatada, Toshihiro Okajima   +7 more
doaj   +1 more source

EXAFS spectroscopy for chemical applications at DESY

, 2017
EXAFS spectroscopy is one of the most often used analytical methods in chemistryrelated research at synchrotron radiation sources. After a gap of 3 years DESY isagain operating 2 EXAFS beamlines in regular user operation.
Welter, Edmund, Caliebe, Wolfgang
core   +1 more source

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