Results 11 to 20 of about 3,491 (200)

Data science assisted investigation of catalytically active copper hydrate in zeolites for direct oxidation of methane to methanol using H2O2

Scientific Reports, 2021
Dozens of Cu zeolites with MOR, FAU, BEA, FER, CHA and MFI frameworks are tested for direct oxidation of CH4 to CH3OH using H2O2 as oxidant. To investigate the active structures of the Cu zeolites, 15 structural variables, which describe the features of ...
Junya Ohyama, Airi Hirayama, Nahoko Kondou, Hiroshi Yoshida, Masato Machida, Shun Nishimura, Kenji Hirai, Itsuki Miyazato, Keisuke Takahashi   +8 more
doaj   +1 more source

Upgrade of transmission XAFS data acquisition system upgrade of Shanghai Synchrotron Radiation Facility BL14W1 beamline station

He jishu, 2022
BackgroundX-ray absorption spectroscopy (XAS) has a wide range of applications in materials science, biology, chemistry and other fields.PurposeThis study aims to improve the efficiency of transmission acquisition of synchrotron X-ray absorption fine ...
LIU Hongzhou, LI Ji, GU Songqi, SU Xiaozhi, MEI Bingbao, JIANG Zheng, LIU Zhi   +6 more
doaj   +1 more source

Integration of X-ray absorption fine structure databases for data-driven materials science

Science and Technology of Advanced Materials: Methods, 2023
With the aim of introducing data-driven science and establishing an infrastructure for making X-ray absorption fine structure (XAFS) spectra findable and reusable, we have integrated XAFS databases in Japan. This integrated database (MDR XAFS DB) enables
Masashi Ishii, Kosuke Tanabe, Asahiko Matsuda, Hironori Ofuchi, Takahiro Matsumoto, Toyonari Yaji, Yasuhiro Inada, Hiroaki Nitani, Masao Kimura, Kiyotaka Asakura   +9 more
doaj   +1 more source

DAFNE-Light DXR1 Soft X-Ray Synchrotron Radiation Beamline: Characteristics and XAFS Applications

Condensed Matter, 2019
X-ray Absorption Fine Structure Spectroscopy (XAFS) is a powerful technique to investigate the local atomic geometry and the chemical state of atoms in different types of materials, especially if lacking a long-range order, such as nanomaterials, liquids,
Antonella Balerna
doaj   +1 more source

Assessing the prospect of XAFS experiments of metalloproteins under in vivo conditions at Indus-2 synchrotron facility, India

Journal of Synchrotron Radiation, 2023
The feasibility of X-ray absorption fine-structure (XAFS) experiments of ultra-dilute metalloproteins under in vivo conditions (T = 300 K, pH = 7) at the BL-9 bending-magnet beamline (Indus-2) is reported, using as an example analogous synthetic Zn (0.1 ...
Debdutta Lahiri, Richa Agrawal, Khileshwari Chandravanshi, Parasmani Rajput, Ankur Agrawal, Ashutosh Dwivedi, Ravindra D. Makde, S. N. Jha, Nandini Garg   +8 more
doaj   +1 more source

Coupling between γ-irradiation and synchrotron-radiation-based XAFS techniques for studying Mn-doped ZnO nanoparticles

Journal of Synchrotron Radiation, 2022
γ-Irradiation and synchrotron-radiation-based X-ray absorption fine-structure (XAFS) spectroscopy have been used to induce structure disorder through the interaction of γ-rays (200 kGy) with fabricated Mn-doped ZnO nanoparticles (NPs) and then to examine
N. G. Imam, Messaoud Harfouche, A. A. Azab, S. Solyman   +3 more
doaj   +1 more source

Data acquisition system of a von Hamos X-ray emission spectrometer based on PILATUS detector

He jishu, 2022
BackgroundHigh energy resolution X-ray emission spectroscopy (XES) has higher energy resolution than conventional X-ray absorption fine structure spectroscopy (XAFS), hence a powerful tool to explore the fine electronic structure of matter.
GU Songqi, MEI Bingbao, JIANG Zheng, HUANG Yuying   +3 more
doaj   +1 more source

High-accuracy transmission and fluorescence XAFS of zinc at 10 K, 50 K, 100 K and 150 K using the hybrid technique

Journal of Synchrotron Radiation, 2023
The most accurate measurements of the mass attenuation coefficient for metals at low temperature for the zinc K-edge from 9.5 keV to 11.5 keV at temperatures of 10 K, 50 K, 100 K and 150 K using the hybrid technique are reported.
Marcus W. John, Daniel Sier, Ruwini S. K. Ekanayake, Martin J. Schalken, Chanh Q. Tran, Bernt Johannessen, Martin D. de Jonge, Peter Kappen, Christopher T. Chantler   +8 more
doaj   +1 more source

Soft X-ray beamline BL1N2 at Aichi Synchrotron Radiation Center and its industrial use

Journal of Synchrotron Radiation, 2023
BL1N2 is a soft X-ray XAFS (X-ray absorption fine structure) beamline that is well suited for industrial use. User service started in 2015. The beamline is a grazing optical system with a pre-mirror, an inlet slit, two mirrors for three gratings, an ...
Harue Sugiyama, Haruki Murase, Toyokazu Nomoto, Yoshikazu Takeda   +3 more
doaj   +1 more source

Enhancing Near-Room-Temperature Thermoelectric Performance of n-Type Mg₃(Sb, Bi)₂-Based Materials via ZrB₂ Heterointerface Engineering. [PDF]

Adv Sci (Weinh)
A conductive ZrB2 ceramic composite strategy was developed for Mg3(Sb, Bi)2 thermoelectrics to regulate carrier transport and phonon scattering through heterointerface engineering. The 1.0 wt.% ZrB2 composite achieved enhanced room‐temperature performance, with a power factor of 28.51 µW cm−1 K−2 and a peak ZT of 1.22 at 573 K.
Xu Y, Zhang L, Li M, Zhang J, Li NH, Yang YL, Shi XL, Chen ZG.   +7 more
europepmc   +2 more sources