Results 21 to 30 of about 39,813 (246)

Towards Blue Long-Lasting Luminescence of Eu/Nd-Doped Calcium-Aluminate Nanostructured Platelets via the Molten Salt Route

Nanomaterials, 2019
Calcia-alumina binary compounds doped with rare earths and some transition metals cations show persistent luminescence from the visible to the infrared range.
Rocío E. Rojas-Hernandez, Fernando Rubio-Marcos, Aida Serrano, Eduardo Salas, Irina Hussainova, José Francisco Fernandez   +5 more
doaj   +1 more source

Experimental evidence of thermal fluctuations on the X-ray absorption near-edge structure at the aluminum K-edge

, 2012
After a review of temperature-dependent experimental x-ray absorption near-edge structure (XANES) and related theoretical developments, we present the Al K-edge XANES spectra of corundum and beryl for temperature ranging from 300K to 930K.
A. Bordage, B. Ravel, C. R. Natoli, Ch. Brouder, D. Cabaret, D. Duflot, D. Li, D. Li, D. Manuel, G. Herzberg, M. Abramowitz, N. Trcera, Ph. Sainctavit, R. M. Hazen   +13 more
core   +4 more sources

Structural behaviour of copper chloride catalysts during the chlorination of CO to phosgene [PDF]

, 2018
The interaction of CO with an attapulgite-supported Cu(II)Cl2 catalyst has been examined in a micro-reactor arrangement. CO exposure to the dried, as-received catalyst at elevated temperatures leads to the formation of CO2 as the only identifiable ...
Callison, June, Davies, Philip R., Gibson, Emma K., Guan, Shaoliang, Lennon, David, Rossi, Giovanni E., Wells, Peter P., Willock, David J., Winfield, John M.   +8 more
core   +2 more sources

X-ray absorption study of Ti-bearing silicate glasses [PDF]

, 1994
Ti K-edge XANES spectra have been collected on a series of Ti-bearing silicate glasses with metasilicate and tetrasilicate compositions. The intensity of the preedge feature in these spectra has been found to change with glass composition and varies from
Dingwell, Donald B., Mottana, Annibale, Paris, Eleonora, Romano, Claudia, Seifert, Friedrich   +4 more
core   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

Multi-scale theoretical approach to X-ray absorption spectra in disordered systems: an application to the study of Zn(II) in water

, 2018
We develop a multi-scale theoretical approach aimed at calculating from first principles X-ray absorption spectra of liquid solutions and disordered systems.
Calandra, Matteo, D'Acapito, Francesco, De Santis, Emiliano, La Penna, Giovanni, Morante, Silvia, Rossi, Giancarlo, Stellato, Francesco   +6 more
core   +1 more source

Electroactive Metal–Organic Frameworks for Electrocatalysis

Advanced Functional Materials, EarlyView.
Electrocatalysis is crucial in sustainable energy conversion as it enables efficient chemical transformations. The review discusses how metal–organic frameworks can revolutionize this field by offering tailorable structures and active site tunability, enabling efficient and selective electrocatalytic processes.
Irena Senkovska, Yutong Luo, Ruyan Zhao, Jianjun Zhang, Mingchao Wang, Xinliang Feng, Eike Brunner, Stefan Kaskel   +7 more
wiley   +1 more source

Exploring spectroscopic X-ray nano-imaging with Zernike phase contrast enhancement

Scientific Reports, 2022
Spectroscopic full-field transmission X-ray microscopy (TXM-XANES), which offers electrochemical imaging with a spatial resolution of tens of nanometers, is an extensively used unique technique in battery research.
Yeseul Kim, Jun Lim
doaj   +1 more source

Self-contained Kondo effect in single molecules

, 2005
Kondo coupling of f and conduction electrons is a common feature of f-electron intermetallics. Similar effects should occur in carbon ring systems(metallocenes).
C. H. Booth, L. N. Mulay, M. D. Walter, M. Daniel, R. A. Andersen, W. W. Lukens   +5 more
core   +1 more source

A Gel Probe Equilibrium Sampler for Measuring Arsenic Porewater Profiles and Sorption Gradients in Sediments: I. Laboratory Development [PDF]

, 2008
A gel probe equilibrium sampler has been developed to study arsenic (As) geochemistry and sorption behavior in sediment porewater. The gels consist of a hydrated polyacrylamide polymer, which has a 92% water content.
Campbell, Kate M., Hering, Janet G., O'Day, Peggy A., Root, Robert   +3 more
core   +3 more sources