Results 111 to 120 of about 44,774 (227)

EXAFS Peaks and TPR Characterizing Bimetallic Interactions: Effects of Impregnation Methods on the Structure of Pt-Ru/C Catalysts

Journal of Spectroscopy, 2014
To investigate bimetallic interactions, Pt-Ru/C catalysts were prepared by coimpregnation (Pt-Ruco/C) and successive impregnation (Ru-Ptse/C), while Pt/C, Ru/C, and reduced Pt-Rublack were used as reference.
Nan-Yu Chen, Ming-Chun Liu, Shih-Chieh Yang, Jen-Ray Chang   +3 more
doaj   +1 more source

Asymmetric Active Center Triggers Side‐On Photo‐Fenton‐Like Reaction Through Polar Charge Transfer and Self‐Adapting Sulfur Vacancies

Advanced Science, EarlyView.
The Cu‐Zn3In2S6 photocatalyst (Cu‐ZISV) with asymmetric Cu‐SV‐Zn sites was designed and synthesized to boost peroxymonosulfate (PMS) activation kinetics. The side‐on photo‐Fenton‐like reaction by the asymmetric Cu‐SV‐Zn site accelerated PMS activation and pollutant degradation, and the first‐order kinetic constant of Cu‐ZISV increased by 4.87 times ...
Jiaqi Hu, Xiaoyuan Zhang, Yufei Gao, Jianyi Liu, Xu He, Yu Liu, Jinfeng Lu, Jun Ma   +7 more
wiley   +1 more source

Local structure of solid and liquid gold probed by reverse Monte Carlo analysis of X-ray absorption data

Journal of Synchrotron Radiation
The increase in computational capabilities of modern computers has allowed us to develop new accurate methods for EXAFS (extended X-ray absorption fine structure) data-analysis.
Nodoka Hara, Fabio Iesari, Toshihiro Okajima, Andrea Di Cicco   +3 more
doaj   +1 more source

Structural Characterization of Zn(II)-, Co(II)-, and Mn(II)-loaded Forms of the argE-encoded \u3cem\u3eN\u3c/em\u3e-acetyl-L-ornithine Deacetylase from \u3cem\u3eEscherichia coli\u3c/em\u3e [PDF]

, 2012
The Zn, Co, and Mn K-edge extended X-ray absorption fine structure (EXAFS) spectra of the N-acetyl-l-ornithine deacetylase (ArgE) from Escherichia coli, loaded with one or two equivalents of divalent metal ions (i.e., [Zn(II)_(ArgE)], [Zn(II)Zn(II)(ArgE)]
Holz, Richard C., McGregor, Wade C., Scott, Robert A., Shokes, Jacob E., Tao, Ye   +4 more
core   +1 more source

Lewis Pair‐Engineered CuMnOx as Cold‐Adapted Multinanozyme for Cooperative Hydrolytic and Oxidative Degradation of Raw Corn Stalk

Advanced Science, EarlyView.
A Lewis pair site design strategy was established to construct Cu‐doped Mn‐based amorphous nanozymes, where Mn and oxygen vacancies generate cooperative acid‐base pairs. The resulting multinanozyme integrates glycosidase‐, oxidase‐, and cold‐adapted enzyme‐mimicking activities, enabling cooperative depolymerization of cellulose and hemicellulose ...
Huile Liu, Ziyi Di, Qing Tian, Yue Zhou, Rong Yang, Zhiyi Bai, Haoyu Wang, Yao Chen, Lianbing Zhang   +8 more
wiley   +1 more source

Local Structure Analysis of Heavy Fermion Ce₂Pt₆Ga₁₅ with a Honeycomb Structure Using Extended X-Ray Absorption Fine Structure

Metals
Ce2Pt6Ga15 is a heavy fermion compound near the quantum critical point (QCP). Its crystal structure may exhibit magnetic frustration due to a honeycomb arrangement; however, stacking faults in the crystal hinder structural analysis.
Yuji Matsumoto, Yuki Watabe, Fabio Iesari, Masakatsu Osumi, Kyugo Ota, Yoshinori Haga, Keisuke Hatada, Toshihiro Okajima   +7 more
doaj   +1 more source

Modulating Local Electronic Structure via Cluster Engineering on Cobalt Phosphide for Efficient Water/Seawater Splitting

Advanced Science, EarlyView.
The heterostructure benefits from the high dispersion of FeOx nanoclusters on the porous CoxP substrate, while the interfacial bonds Fe‐O‐Co enhance charge transport and redistribution, resulting in excellent oxygen evolution reaction performance and strong potential for practical applications.
Cheng Gong, Fengying Pan, Pengpeng Zhang, Yuhan Xie, Yaojie Lei, Xiaobo Zheng, Dinushi Munasinghe Mudiyanselage, Hong Gao, Jinqiang Zhang, Yufei Zhao, Guoxiu Wang, Hao Liu   +11 more
wiley   +1 more source

Physicochemical Characterization and Antimicrobial Properties of Lanthanide Nitrates in Dilute Aqueous Solutions

Molecules
This work presents the results of studying dilute aqueous solutions of commercial Ln(NO3)3 · xH2O salts with Ln = Ce-Lu using X-ray diffraction (XRD), IR spectroscopy, X-ray absorption spectroscopy (XAS: EXAFS/XANES), and pH measurements.
Galina Kuz’micheva, Alexander Trigub, Alexander Rogachev, Andrey Dorokhov, Elena Domoroshchina   +4 more
doaj   +1 more source

Synergistic Modulation of Ru–O Bond Covalency via Ba/Fe Co‐Doping and Oxygen‐Vacancy Engineering for Efficient Wide‐pH Oxygen Evolution

Advanced Science, EarlyView.
Ba/Fe co‐doping and oxygen vacancy engineering synergistically modulate the Ru–O bond covalency in RuO2, leading to markedly enhanced OER activity across wide‐pH electrolytes. ABSTRACT Developing efficient and stable oxygen evolution reaction (OER) catalysts across a wide‐pH range is critical for practical water electrolysis.
Zongpeng Wang, Ting Jiang, Reem F. Alshehri, Longfei Ding, Salah M. El‐Bahy, Yuanmo Lin, Puyou Ying, Hongxiang Chen, Hanhui Lei, Terence X. Liu, Zhiping Lin   +10 more
wiley   +1 more source

Axial F–Bi–Ov Electron Pump Drives Continuous Reconfiguration of Bi Sites for Efficient Photocatalytic N2 Reduction

Advanced Science, EarlyView.
Axial Fluorine and Light‐Induced Oxygen Vacancies Synergize as an Electron Pump to Lower N2 Activation Energy and Enable Sustained NH3 Synthesis on FBWO. ABSTRACT The electronic structure precision of single‐atom catalysts (SACs) represents a decisive factor limiting advancements in photocatalytic nitrogen reduction (NRR) efficiency.
Xiao Ge, Xinyi Wu, Hao‐tong Li, Xinya Liu, Jie‐jie Chen, Yuan Min, Xiaozhi Wang   +6 more
wiley   +1 more source