Results 51 to 60 of about 44,774 (227)

Stabilization of metal ensembles at room temperature. Palladium clusters in zeolites [PDF]

, 1989
Palladium clusters of low nuclearity have been prepared in the cavities of X zeolites via ion exchange with Pd(NH,),Cl,, oxidative dehydration, and subsequent reduction of the dry Pd(I1) zeolites with hydrogen at 295 and 425 K. Detailed EXAFS analysis of
Bein, Thomas, Koningsberger, Diek C., Möller, Karin   +2 more
core   +3 more sources

Facet‐Engineered S‐Scheme Heterostructure With Enhanced Active Sites for Efficient Photocatalytic Degradation of Organic Contaminants

Advanced Functional Materials, EarlyView.
The facet‐engineered ZnO/Zn3In2S6 heterostructure, dominated by {001} plane coupling, exposes abundant unsaturated Zn sites with elongated Zn─O bonds, directing photoexcited charge carriers along an S‐scheme pathway and suppressing recombination. Enhanced interfacial Zn adsorption toward bisphenol A and methylene blue further synergistically promotes ...
Yang Yang, Zisheng Du, Hongyuan Yang, Debabrata Bagchi, Ruotao Yang, Prashanth W. Menezes, Sugang Meng   +6 more
wiley   +1 more source

X-ray absorption spectroscopy of lanmodulin-derived peptides bound to rare earth elements

Journal of Synchrotron Radiation
A sustainable and robust supply chain of rare earth elements (REEs) is necessary to meet our consumer, national security and clean energy goals. However, current intra-REE separation technologies (e.g.
Adam Smerigan, Adam S. Hoffman, Jorge Perez-Aguilar, Rui Shi, Simon R. Bare   +4 more
doaj   +1 more source

Evidence for short range orbital order in paramagnetic insulating (Al,V)_2O_3

, 2001
The local structure of (Al_0.06V_0.94)_2O_3 in the paramagnetic insulating (PI) and antiferromagnetically ordered insulating (AFI) phase has been investigated using hard and soft x-ray absorption techniques.
A. I. Frenkel, A. Nateprov, A.I. Frenkel, A.L. Ankudinov, A.R. Williams, C. Castellani, C. Castellani, C. Castellani, D.B. McWhan, D.B. McWhan, F. Mila, F.W. Lytle, G.M. Joshi, J. Goulon, J. Spalek, J. Will, J.-H. Park, K. Held, L. Tröger, L.F. Mattheiss, M. Klemm, M. L. denBoer, M.J. Rozenberg, O. Müller, P. Pfalzer, P. Pfalzer, P.D. Dernier, P.D. Dernier, R. Shiina, S. Calvin, S. Horn, S.Y. Ezhov, V. Eyert, V. Eyert, V. Eyert, V. Eyert, W. Bao, W. Bao   +37 more
core   +1 more source

Nucleation‐Controlled Reconstruction of CuOx for Selective CO2 Electroreduction

Advanced Functional Materials, EarlyView.
The ratio of oxygen vacancies (Ov) and exposed Cu2O (111)/(200) of CuOx precatalyst is modulated by nucleation control of Cu(OH)2 precursor. Low Ov ratio and high ratio of Cu2O (111)/(200) in slow‐nucleated CuOx reconstructs to high‐coordinated oxide‐derived copper (OD‐Cu) during electrochemical CO2 reduction reaction (CO2RR) and exhibits enhanced ...
Ying Ying Ch'ng, Zhipeng Ma, Ming Zhang, Shujie Zhou, Varun Kundi, Priyank Vijaya Kumar, Wenyu Zhong, Yuwei Yang, Jitraporn Vongsvivut, Qinfen Gu, Xiaoxuan Luo, Lixue Jiang, Rahman Daiyan, Zhaojun Han, Rose Amal   +14 more
wiley   +1 more source

Mechanisms of Copper and Mercury Adsorption on Bentonite Clays from EXAFS Spectroscopy

Chemical Engineering Transactions, 2014
Copper(II) and Mercury(II) cations are classified as important heavy metal pollutants in industrial wastewaters. In this study, Extended X-Ray Absorption Fine Structure (EXAFS) spectroscopy was used to provide information about the coordination ...
M.G.A. Vieira, A.F. de Almeida Neto, M.G.C. da Silva   +2 more
doaj   +1 more source

Dual‐Site Ru Single‐Atoms and RuP Nanoclusters on N, P, and B Co‐Doped Porous Carbon for Efficient Alkaline HER and AEM Water Electrolysis

Advanced Functional Materials, EarlyView.
Ru single atoms and RuP nanoclusters are co‐anchored in N, P, and B co‐doped porous carbon nanospheres via in situ carbonization/phosphidation of a boronate polymer precursor. RuP activates water, while nearby Ru single atoms accelerate H2 formation through H* transfer. The catalyst delivers low overpotential and high durability in alkaline HER and AEM
Xiaohong Wang, Juguo Dai, Dongxu Li, Jianghua Wu, Hucheng Fu, Yiting Xu, Xueqiang Qi, Qian Xue, Yanbin Shen, Xiaoqing Pan, Conghui Yuan, Shuifen Xie, Andreu Cabot, Lizong Dai   +13 more
wiley   +1 more source

Oxidation Behavior of Platinum Group Alloys in Molten Glass

Electrochemistry
The composition of platinum group alloys in insoluble residue liquid waste produced during spent nuclear fuel reprocessing depends on the type of fuel and the degree of burn-up.
Koya YAMAZAKI, Naoki TARUMI, Isamu SATO, Haruka TADA, Haruaki MATSUURA   +4 more
doaj   +1 more source

The \u3cem\u3edapE\u3c/em\u3e-encoded \u3cem\u3eN\u3c/em\u3e-Succinyl-l,l-Diaminopimelic Acid Desuccinylase from \u3cem\u3eHaemophilus influenzae\u3c/em\u3e Is a Dinuclear Metallohydrolase [PDF]

, 2003
The Zn K-edge extended X-ray absorption fine structure (EXAFS) spectra, of the dapE-encoded N-succinyl-l,l-diaminopimelic acid desuccinylase (DapE) from Haemophilus influenzae have been recorded in the presence of one or two equivalents of Zn(II) (i.e ...
Bienvenue, David L., Cosper, Nathaniel J., Gilner, Danuta M., Holz, Richard C., Scott, Robert A., Shokes, Jacob E., Tsukamoto, Takashi   +6 more
core   +1 more source

Electrocatalytic Reduction of CO2 to Ethylene: Catalyst Design and Synchrotron‐Based Characterizations

Advanced Functional Materials, EarlyView.
This review evaluates strategies for electrochemical CO2 reduction to ethylene, focusing on copper‐based catalyst design and microenvironment modulation to achieve industrial‐grade performance. By leveraging operando synchrotron‐based characterizations, we provide a multiscale understanding of dynamic structural transformations and key reaction ...
Meng Zhang, Zuolong Chen, Yimin A. Wu
wiley   +1 more source