Results 61 to 70 of about 21,282 (312)

CO₂ Activation on Lindqvist-Type Polyoxotantalate: Structural Analysis by In Situ HERFD-XANES

Polyoxotantalates, clusters of tantalum (Ta) oxide, are promising catalysts for CO2 fixation reactions because of their exceptional Lewis basicity facilitating CO2 activation.
Naomi Kawamura (2455354), Kotaro Higashi (1359546), Kazuo Kato (1731079), Tomoki Matsuyama (9968027), Soichi Kikkawa (5724020), Seiji Yamazoe (1300668), Naoki Nakatani (1792588)   +6 more
core   +1 more source

Full Multiple Scattering XANES Calculations

, 1997
Ab initio calculations of X-ray absorption near-edge structure (XANES) are carried out by inverting the full multiple-scattering (MS) matrix. Our approach uses the exact Rehr-Albers [1] separable representation of the free propagator G0 together with ...
B. Ravel, J.J. Rehr
core   +1 more source

Transient Laser‐Shocked Synthesis of Amorphous Layer‐Supported Metal Nanocrystals for Efficient Nitrate Reduction

Advanced Materials, EarlyView.
A general, versatile laser‐shock synthesis process is reported to produce various bimetallic CuNi, CuFe, CuCo, and medium‐entropy CuFeCoNi heterostructures, in which crystalline metal nanoparticles are anchored to amorphous hydroxide supports. During nitrate reduction reaction, the heterostructures undergo dynamic amorphous/crystalline reconstruction ...
Weihua Guo, Jixun Zhang, Siwei Zhang, Yangbo Ma, Yun Song, Jianjun Su, Zihao Li, Yinger Xin, Qiang Zhang, Mingming He, Ruixuan Wang, Rui Xue, Shibo Xi, Ying Wang, Shenlong Zhao, Tao Yang, Zhengxiao Guo, Ben Zhong Tang, Ruquan Ye   +18 more
wiley   +1 more source

Interfacial Acid Sites‐Mediated ZnO‐Based Electrocatalysts for Sustainable Dual‐Pathway H2O2 Production and Rechargeable Zn‐H2O2 Electrochemical Cell

Advanced Materials, EarlyView.
In this work, a synergistic strategy introduces interfacial acid sites, oxygen vacancies, and built‐in electric field into ZnSe/ZnO heterojunction to optimize its electronic structure and electrode micro‐environment. This overcomes sluggish oxygen reduction reaction kinetics and low H2O2 selectivity, achieving record H2O2 productivity (754.4 M gcat−1 ...
Lijun Yang, Sitong Liu, Wencheng He, Fengzhan Sun, Shubing Bi, Hongge Pan, Lingfeng Zhu, Tianyi Ma, Lei Zhang   +8 more
wiley   +1 more source

Polarized XANES of iron porphyrins [PDF]

Physica B: Condensed Matter, 1989
Peer Reviewed ; http://deepblue.lib.umich.edu/bitstream/2027.42/27901/1/0000321 ...
Wang, S., Waldo, Geoffrey S., Fronko, R. D., Penner-Hahn, James E.   +3 more
openaire   +2 more sources

KRYPTON XANES STUDIES IN IMPLANTED SYSTEMS

, 1986
On a mesure la dépendance en température de l'absorption des rayons X près du seuil K (XANES) pour le krypton implante dans du niobium, de l'aluminum et du grafoil.
D.M. PEASE, J.I. BUDNICK, M.H. CHOI, G.H. HAYES, Z. TAN, H.C. HAYDEN, F. NAMAVAR   +6 more
core   +1 more source

Engineering CO2 Reduction Pathways via Alloy‐Support Interactions in Li‐CO2 Batteries

Advanced Materials, EarlyView.
Alloy‐support interactions in RuCu/NC induce interfacial charge redistribution and shift d‐band centers, steering CO2 reduction from Li2CO3 to metastable Li2C2O4. This pathway engineering lowers the rate‐determining barrier and suppresses carbonate formation, enabling high discharge voltage (3.23 V) in Li‐CO2 batteries with reduced overpotential (0.50 ...
Liang Sun, Xindan Zhang, Guang Feng, Guoqiang Zhao, Bernt Johannessen, Guanjie Li, Shilin Zhang, Hongge Pan, Zaiping Guo   +8 more
wiley   +1 more source

Photoluminescent properties of porous silicon nanoparticles: synthesis, characterization, and cellular imaging

Конденсированные среды и межфазные границы
Purpose: This study investigates the stability of photoluminescent (PL) properties of microporous silicon nanoparticles (μpSi-NPs) synthesized by electrochemical etching of monocrystalline silicon followed by lyophilization.
Darya A. Nazarovskaia, Sergey Yu. Turishchev, Sofia S. Titova, Artur A. Shatov, Pyotr A. Tyurin-Kuzmin, Lyubov A. Osminkina   +5 more
doaj   +1 more source

Real Time Observation of X-ray-Induced Surface Modification Using Simultaneous XANES and XEOL-XANES

Analytical Chemistry, 2013
In experiments preliminary to the design of an X-ray-excited optical luminescence (XEOL)-based chemical mapping tool we have used X-ray micro (4.5 × 5.2 μm) and macro (1 × 6 mm) beams with similar total fluxes to assess the effects of a high flux density beam of X-rays at energies close to an absorption edge on inorganic surfaces in air.
Adriaens A., Quinn P., Nikitenko S., Dowsett M.G.   +3 more
openaire   +3 more sources

Free small nanoclusters of titanium : XANES study

, 2007
X-ray absorption near-edge structure (XANES) spectra at the Ti L-2,L-3-edge of small titanium nanoclusters have been studied. XANES spectra have been measured at the GasPhase beamline of Elettra synchrotron radiation facility.
A. Soldatov, T. Mazza, G. Bongiorno, P. Milani, V. Mazalova, P. Piseri, M. Coreno, A. Kravtsova, G. Yalovega, C. Lenardi   +9 more
core   +1 more source