نتایج جستجو برای: ni nanoalloy

تعداد نتایج: 52540  

Journal: :Journal of the American Chemical Society 2014
Shiyao Shan Valeri Petkov Lefu Yang Jin Luo Pharrah Joseph Dina Mayzel Binay Prasai Lingyan Wang Mark Engelhard Chuan-Jian Zhong

Alloying palladium (Pd) with other transition metals at the nanoscale has become an important pathway for preparation of low-cost, highly active and stable catalysts. However, the lack of understanding of how the alloying phase state, chemical composition and atomic-scale structure of the alloys at the nanoscale influence their catalytic activity impedes the rational design of Pd-nanoalloy cata...

Journal: :Catalysts 2023

In this paper, a bimetallic Metal-Organic Framework (MOF) CoNiBTC was employed as precursor for the fabrication of nanoalloys CoNi@C evenly disseminated in carbon shells. These functional nanomaterials are characterized by powdered X-ray diffraction (PXRD), Fourier Transform Infra-Red spectroscopy (FTIR), surface area porosity analyzer, photoelectron (XPS), Field emission scanning electron micr...

Journal: :Physical chemistry chemical physics : PCCP 2015
Takeshi Matsumoto Masaaki Sadakiyo Mei Lee Ooi Tomokazu Yamamoto Syo Matsumura Kenichi Kato Tatsuya Takeguchi Nobuki Ozawa Momoji Kubo Miho Yamauchi

We demonstrate electric power generation via the electrooxidation of ethylene glycol (EG) on a series of Fe-group nanoalloy (NA) catalysts in alkaline media. A series of Fe-group binary NA catalysts supported on carbon (FeCo/C, FeNi/C, and CoNi/C) and monometallic analogues (Fe/C, Co/C, and Ni/C) were synthesized. Catalytic activities and product distributions on the prepared Fe-group NA cataly...

2013
Rameshwori Loukrakpam Shiyao Shan Valeri Petkov Lefu Yang Jin Luo Chuan-Jian Zhong

For oxygen reduction reaction (ORR) over alloy electrocatalysts, the understanding of how the atomic arrangement of the metal species in the nanocatalysts is responsible for the catalytic enhancement is challenging for achieving better design and tailoring of nanoalloy catalysts. This paper reports results of an investigation of the atomic structures and the electrocatalytic activities of terna...

Journal: :Chemistry: A European Journal 2021

Non-noble metal-based hydrogenation catalysts have limited practical applications because they exhibit low activity, require harsh reaction conditions, and are unstable in air. To overcome these limitations, herein we propose the alloying of non-noble metal nanoparticles with phosphorus as a promising strategy for developing smart that both excellent activity air stability. We synthesized novel...

Journal: :High Temperatures-high Pressures 2022

A simple unified model is used to study the variation in Debye temperature monometallic and bimetallic nanoalloys. In present study, a systematic investigation of done analyze impact size, shape, composition dimension It found that nanoalloys decreases with decrease size nanoalloy. Moreover, for same composition, varies too. nanofilms more than nanowires nanoparticles. also vary shape nanoalloy...

Journal: :Chemical communications 2016
Bingsen Zhang Yiming Niu Junyuan Xu Xiaoli Pan Cheng-Meng Chen Wen Shi Marc-Georg Willinger Robert Schlögl Dang Sheng Su

The structures of PtNix nanoalloy particles were modified through thermal annealing in different atmospheres. The evolution of surface structures was uncovered by advanced transmission electron microscopy, and the structure-function correlation in methanol electro-oxidation was probed. It provided new insights into the design and synthesis of highly efficient electrocatalysts.

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