Results 131 to 140 of about 23,193 (311)

Tailored D‐π Conjugation Boosts Piezocatalytic CO2 Reduction in a Platinum(II)‐Acetylide Framework

Advanced Science, EarlyView.
The highly conjugated metalII‐acetylide framework demonstrates efficient ultrasound‐driven conversion of CO2 to CO. The piezoelectric field generated by ultrasound facilitates electron transfer from the tetraphenylene π‐column to the MII‐bis(acetylide) moiety, enabling CO2 activation. Compared to PdII‐ and NiII‐based analogues, the stronger d–π orbital
Mude Zhu, Yingtang Zhou, Kai Wang, Xiaoyun Fan, Yang Ding, Wai‐Yeung Wong, Linli Xu   +6 more
wiley   +1 more source

EXAFS structure refinement supplemented by computational chemistry

, 2006
We present a method that combines structure determination using extended x-ray absorption fine structure (EXAFS) measurements and computational chemistry (CC) calculations, EXAFS/CC.
Hsiao, Ya-Wen, Tao, Ye, Ryde, Ulf,, Hsiao, Ya-Wen,, Shokes, Jacob E., Scott, Robert A., Lund University., Ryde, Ulf   +7 more
core   +1 more source

Rare‐Earth Mediated Engineering in ZnSe@ZnS:Eu3+ to Simultaneously Achieve Structural Modulation and Atomic Eu Doping Sites for X‐Ray Imaging

Advanced Science, EarlyView.
A dual hard‐base anchoring strategy was developed to synthesize ZnSe@ZnS:Eu3+ quantum dots, leveraging fluoride‐oleylamine interactions to create surface atomic Eu doping sites. By precisely tuning temperature, Eu3+ concentration, and fluoride levels, we obtain morphologies ranging from tip growth to coupled flower‐like structures.
Jicun Ma, Chenhao Yang, Jiada Fan, Haorong Jiao, Jiawang Liu, Jialiang Xu, Hui Cai, Yinghui Wang, Boyuan Shen, Jiabin Cui   +9 more
wiley   +1 more source

Synchrotron-Based Structural Analysis of Nanosized Gd₂(Ti_1−xZr_x)₂O₇ for Radioactive Waste Management

Nanomaterials
Complex oxides with the general formula Gd2(Ti1−xZrx)2O7 are promising candidates for radioactive waste immobilization due to their capacity to withstand radiation by dissipating part of the free energy driving defect creation and phase transitions.
Marco Pinna, Andrea Trapletti, Claudio Minelli, Armando di Biase, Federico Bianconi, Michele Clemente, Alessandro Minguzzi, Carlo Castellano, Marco Scavini   +8 more
doaj   +1 more source

Real-part EXAFS from multilayer Bragg reflections: A promising new EXAFS technique

, 2003
Resonant X-ray scattering measurements on the energy dependence of multilayer Bragg reflections are presented. It is shown that the deviations from the ideal Bragg law at resonance are due to refraction, which allows a determination of the real part of ...
U. Staub, H. Grimmer, F. d'Acapito, M. Horisberger, O. Zaharko   +4 more
core   +1 more source

Efficient Direct Recycling of Spent Batteries: Integrated Lithiation and Delamination

Advanced Science, EarlyView.
An integrated process for the delamination and relithiation of spent cathodes, LixNi0.6Co0.2Mn0.2O2 and LixFePO4, under open‐air conditions is proposed. The transition‐metal (Ni) oxidation state in the cathode is reduced by the oxidation of diethylene glycol, facilitating relithiation. Glycol aldehyde formation induces 100% electrode delamination.
Jeonghwan Song, Seok Hyun Song, Dokyeong Han, Jaehyun Noh, Jayoung Kim, Min Jeong Kim, Hayong Song, Jeong‐Sun Park, Jaekook Kim, Jiyoung Ma, Jinju Song, Jung‐Je Woo   +11 more
wiley   +1 more source

Bond Valence Sum Parameters for Analyzing Pyranopterin Tungsten Enzyme Structures

Molecules
The determination of tungsten oxidation states and W–ligand bond lengths for pyranopterin tungsten enzymes can be negatively impacted by Fourier series termination effects and photodamage/photoreduction in the X-ray beam.
Jesse Lepluart, Martin L. Kirk
doaj   +1 more source

Deconvolution of Transition Metal LIII/LII-Edge EXAFS and Magnetic EXAFS (MEXAFS) Data

, 1997
We describe the use of an iterative Van Cittert deconvolution approach to isolate the LUI-edge from the LII-edge EXAFS and MEXAFS signals for the 3d transition metals.
W.T. Elam, Y.U. Idzerda, V. Chakarian, K.M. Kernner   +3 more
core   +1 more source

Beyond d‐Band Catalysis: A Critical Review and Descriptor Framework for Rare‐Earth Engineering in Lithium–Sulfur Batteries

Advanced Science, EarlyView.
Rare‐earth catalysts regulate lithium–sulfur battery chemistry through f‐orbital–mediated interactions, enabling simultaneous polysulfide adsorption and catalytic conversion on conductive carbon hosts. This synergistic control suppresses the shuttle effect, accelerates redox kinetics, and guides stable Li2S nucleation, providing a mechanistic framework
Fan Wang, Shihzad Shakil, Guozhi Wu, Jiarui Huang, Hanhui Lei, Terence Xiaoteng Liu   +5 more
wiley   +1 more source

Specific EXAFS tools in analysis of MoSI nanowires

, 2016
The structure of nanowires prepared by vapor synthesis from Mo, S and I is investigated by methods of x-ray diffraction (XRD) and extended x-ray absorption fine structure (EXAFS).
Meden, Anton, Kodre, Alojz, Padežnik Gomilšek, Jana, Arčon, Iztok, Mihailović, Dragan   +4 more
core