Results 101 to 110 of about 25,467 (256)

Development of XANES nanoscopy on BL7C at PLS-II

, 2020
X-ray absorption near-edge structure (XANES) imaging is a powerful tool to visualize the chemical state distribution of transition-metal-based materials at synchrotron radiation facilities.
LEE, SANG SUL
core   +1 more source

Near-field nano holographic tomography with chemical contrast exploiting low-dimensionality constraints

JPhys Photonics
X-ray absorption near-edge structure (XANES) spectroscopy is key to understanding functional materials. We present, to our knowledge, the first use of hard x-ray near-field holography (NFH) for three-dimensional (3D), spatially resolved XANES.
Johannes Gruen, Johannes Dora, Thea Engler, Martin Seyrich, Andreas Schropp, Jakob Soltau, Markus Osterhoff, Thomas L Sheppard, Tim Salditt, Christian G Schroer, Johannes Hagemann   +10 more
doaj   +1 more source

Cobalt Single‐Atom Nanozyme for Enhanced Intestinal Radioprotection and Tumor Radiosensitization via Bidirectional ROS Modulation

Advanced Science, EarlyView.
Orally administered, pH‐responsive Co‐SAN exerts dual functions: in the alkaline intestinal milieu, it scavenges reactive oxygen species (ROS) and suppresses the PI3K/AKT pathway and NETs formation, thus providing radioprotection; whereas in the acidic tumor microenvironment, it generates ROS and alleviates hypoxia, thereby enhancing radiosensitization.
Shengqi Yin, Junjie Li, Yishu Zou, Yang Liu, Yilin Zheng, Lu Yu, Wanying Zheng, Yajun Zou, Zehui Zhang, Tao Li, Peiqun Yin, Jianlin Zhang, Yuen Wu, Yi Ding   +13 more
wiley   +1 more source

Arsenic K-edge XANES study of REFeAsO oxypnictides

, 2010
Arsenic K-edge X-ray absorption near-edge structure (XANES) spectroscopy has been used to investigate the local geometry around the pnictogen site in the REFeAsO (RE - La, Pr, Nd and Sm) oxypnictides, combined with full multiple-scattering calculations ...
Z. Y. Wu, D. Di Gioacchino, SAINI, Naurang Lal, W. Xu, B. Joseph, IADECOLA, ANTONELLA, N. L. Saini, A. Iadecola, W. S. Chu, A. Bianconi, A. Marcelli, BIANCONI, Antonio   +11 more
core   +1 more source

Continuous‐Flow Microfluidic Synthesis Enhances C2+ Selectivity for Cu2O Catalysts

Advanced Science, EarlyView.
Microfluidic devices are used to prepare Cu2O nanoparticles under laminar flow conditions, which exhibit enhanced selectivity in the CO2‐to‐C2+ reaction due to their nanoporosity and high defect concentration. Cu2O prepared using standard solution methods displays decreased CO2‐to‐C2+ selectivity due to the absence of similar properties. Altogether, we
Carlota Casas, Anh Tuan Ngo, João Pedro Vale, Ona Falcó, Gerard Martí, Mohamed Amazian, Júlia Mayans, Sònia Estradé, Marcos Gil‐Sepulcre, Teresa Andreu, Francesca Peiró, Tiago Sotto Mayor, Lluís Yedra, Jordi García‐Antón, Josep Puigmartí‐Luis, Xavier Sala, Roc Matheu   +16 more
wiley   +1 more source

Electronic structure effects on B K-edge XANES of minerals

, 2010
In order to assess the usability of X-ray absorption near-edge structure (XANES) for studying the structure of BOn-containing materials, the dependence of theoretical XANES at the B K-edge on the way the scattering potential is constructed is ...
Rocca, Francesco, O. Sipr
core   +1 more source

Coordination‐Tuned Iridium Single‐Atom Nanozymes Boost Multienzyme Activity for Colorimetric Sensing

Advanced Science, EarlyView.
Breaking the coordination symmetry of Ir single‐atom sites through asymmetric Ir–N3S1 engineering tailors interfacial electron transfer, oxygen activation, and multienzyme‐like catalytic pathways. Operando spectroscopy and theoretical modeling uncover the atomic‐level origin of activity enhancement, providing a strategy for designing multifunctional ...
Tao Li, Xinyu Zhang, Jiashan Xia, Mengyu Wu, Cong Liu, Yapei Sun, Wanjiang Zhao, Min Qian, Wei Wang, Weixia Duan, Shangcheng Xu   +10 more
wiley   +1 more source

Decision process for comparison of partial and complete XANES spectra

, 2010
Also published as: AIP Conference Proceedings, 2010; 1234(1):621-624If the range of XANES spectra varies between sets of scans, it may be impossible to compare sets of spectra unless a restricted part of the spectra is used.
Zheng, Jiajia, Huynh, Trang T., Gasparon, M., Edraki, Mansour, Ng, Jack C., Harris, H., Ng, J., Huynh, T., Harris, Hugh H., Noller, B., Gasparon, Massimo, Noller, Barry N., Edraki, M., Zheng, J.   +13 more
core   +1 more source

Two‐Dimensional Quaternary Alloys of (RuMoVNb)Se2 for Superior Hydrogen Evolution Reaction Catalysis

Advanced Science, EarlyView.
Composition‐tuned (RuMoVNb)Se2 quaternary alloy nanosheets are synthesized via colloidal reactions. Incorporation of Ru into (MoVNb)Se2 ternary alloys results in more metallic electronic structures and significantly enhances their electrocatalytic activity for the hydrogen evolution reaction (HER) under alkaline, acidic, and neutral conditions.
Junaid Ihsan, Ju Yeon Kim, Irtiqa Mishal, Jun Hyeok Choi, Jeong Eun An, Youn Jun Choi, Doyeon Kim, In Hye Kwak, Gianvito Vilé, Ik Seon Kwon, Hong Seok Kang, Jeunghee Park   +11 more
wiley   +1 more source

sulfur XANES and geochemical data

this dataset included geochemical data from PBr and BBM peat profiles, as well as sulfur K-edge XANES data from selective peat samples, sulfur K-edge XANES data of standard also presentedTHIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE.
Wang, Hongyan, Wang, H (via Mendeley Data)   +1 more
core   +1 more source