Results 101 to 110 of about 66,216 (307)

Reversible surface structural changes in Pt-based bimetallic nanoparticles during oxidation and reduction cycles

, 2009
The surface states of supported PtNi nanoparticles treated at alternating O(2) and H(2) atmosphere were studied by X-ray photoelectron spectroscopy. Reversible structural changes at the surfaces of the supported PtNi nanoparticles in response to reaction
Bao, Xinhe, 包信和, Tan, Dali, Zhai, Runsheng, Mu, Rentao, Liu, Hongyang, Fu, Qiang, 傅强   +7 more
core   +1 more source

High‐Density‐Cluster Ru Catalyst Substitute for Pt/C Benchmark Improves Membrane Water Electrolysis

Advanced Science, EarlyView.
Yuan et al. report a high‐density, monodispersed Ru cluster catalyst featuring interfacial covalent bonds that modulate the electronic structure and optimize intermediate adsorption–desorption, thereby conferring pH‐universal HER activity with ampere‐level current densities and enabling the development of Pt‐free membrane electrodes.
Zhen Yuan, Jia Xu, Zhongchen Gao, Linyan A, Shiying Guo, Jingguo Hu, Zhengshan Tian, Xiaoyong Xu   +7 more
wiley   +1 more source

Demo 14-08 Bimetallic Strip

, 2001
A bimetallic strip consists of thin plates of two metals with different expansion coefficients rigidly connected along their length such that at normal room temperature the strip is straight.

core  

Hydrogen Production from Ammonia Electrochemical Cracking

Advanced Science, EarlyView.
NH3 electrochemical cracking (e‐cracking) is a complementary technique to centralized thermal cracking for releasing H2 from NH3. In this article, we review recent advances in catalyst development for these cracking techniques and conduct a techno‐economic analysis (TEA) to evaluate the economic feasibility of e‐cracking.
Yike Ye, Yi Shun Lim, Qian Wu, Kamal Elouarzaki, Zhichuan J. Xu   +4 more
wiley   +1 more source

Mn/Zn Bimetallic MOF‐Integrated Hydrogel Alleviates Excessive Mitochondrial Fission in BMSCs to Promote Osteoporotic Jawbone Repair

Advanced Science, EarlyView.
Excessive reactive oxygen species (ROS) and chronic inflammation impair bone marrow‐derived mesenchymal stem cells (BMSCs), contributing to poor healing in osteoporotic jawbone defect. The gelatin methacryloyl hydrogel loaded with manganese‐doped zeolitic imidazolate framework (Mn‐ZIF‐8@GelMA) promotes regeneration through redox regulation and ...
Xiayue Jin, Shengjia Ye, Yun Yuan, Xueying Yang, Jiarui Cui, Hongming Zhang, Hui Huang   +6 more
wiley   +1 more source

Black Silicon for Solar Fuels

Advanced Science, EarlyView.
Black silicon couples broadband light harvesting with high‐surface‐area catalytic interfaces, offering a versatile photoelectrode platform for solar‐fuel production. Reaction‐specific analysis highlights trade‐offs involving recombination, chemical instability, catalyst‐induced optical shielding, competing reactions, and mass transport.
Neul Ha, Kaiying Wang, Wooseok Yang
wiley   +1 more source

Bimetallic Ruthenium‐Cobalt Catalyst Supported on Carbon Nanotubes: Synthesis, Characterization, and Application in Electrochemical Sensing of Isoleucine

Advanced Materials Interfaces
In this work, a bimetallic Ru‐Co catalyst based on carbon nanotubes (Ru‐Co/CNT) with a Ru to Co ratio of 95:5 is developed. The catalyst, featuring a total metal loading of 3% on the CNTs, is synthesized using the NaBH4 reduction method.
Omrüye Ozok Arıcı, Aykut Caglar, Bassam A. Najri, Nahit Aktaş, Arif Kivrak, Hilal Kivrak   +5 more
doaj   +1 more source

Carbon coated nickel–cobalt bimetallic sulfides hollow dodecahedrons for a supercapacitor with enhanced electrochemical performance

, 2018
Bimetallic sulfides coated by carbon hollow dodecahedrons were synthesized from bimetallic ZIFs as precursors and exhibited enhanced electrochemical performance as supercapacitors.
Xiao-Lei Chen, Qiao-Feng Su, Teng Huang, Zhenquan Tan, Ling-Dong Li, Xi Chen, Fei-Fei Sun, Xue-Zhi Song   +7 more
core   +1 more source

Deciphering Electrochemical Generation, Transport, and Reactivity of Hydrogen Species in the Electrochemical Palladium Membrane Reactor

Advanced Science, EarlyView.
This study elucidates hydrogen transport and reaction mechanisms in ePMR using 1‐hexyne hydrogenation as a model reaction. Hydrogen transport operates via dual pathways involving hydrogen atom permeation and H2‐mediated re‐dissociation on secondary metal layers.
Samuel J. Shin, Su Bin Roh, Hyun‐Tak Kim, Kwan‐Young Lee, Soo Min Kim, Ji Hoon Park, Minju Park   +6 more
wiley   +1 more source

Enhanced Hydrogen Evolution Activity of MoS2 Through Solid Solution Modification of Its Edge Sites With Ruthenium

Angewandte Chemie, EarlyView.
Modulating the edge sites of molybdenum disulfide significantly boosts hydrogen production. By depositing Ru to form an edge‐coordinated solid solution, we accelerate water dissociation and shift the hydrogen evolution reaction pathway to Volmer–Tafel.
Jinsong Zhou, Tsz Kei Leung, Denis A. Kuznetsov, Christoph R. Müller, Lei Ran, Yingguang Zhang, Xin Li, Gang Li, Yifan Xu, Keda Chen, Qinglan Tang, Yaoyang Yu, Michael K.H. Leung   +12 more
wiley   +2 more sources