نتایج جستجو برای: metal ceramic

تعداد نتایج: 216645  

Journal: :Physical chemistry chemical physics : PCCP 2018
Yulu Liu Hao Li Wanglai Cen Jianjun Li Zhengming Wang Graeme Henkelman

In this study, we used DFT calculations to investigate the bi-functional nature of Cu-based alloy nanoclusters (NCs) supported on CeO2(111) for CO oxidation. More specifically, we studied the reaction pathways on Cu3Pt7 and Cu3Rh7via the O2 associative (OCOO) and dissociative mechanisms. We find that CO oxidation on Cu3Pt7 proceeds via the O2 dissociation pathway, while Cu3Rh7 prefers the OCOO ...

Journal: :Molecules 2013
Teresa Lehmann Elena Topchiy

Bleomycins are a family of glycopeptide antibiotics that have the ability to bind and degrade DNA when bound to key metal ions, which is believed to be responsible for their antitumor activity. Knowledge of the structures of metallo-bleomycins is vital to further characterize their mechanism of action. To this end, numerous structural studies on metallo-bleomycins have been conducted. NMR spect...

2017
Siti Nabilah Misti Martin Birkett Roger Penlington David Bell

This paper studies the effect of abrasive trimming on the electrical properties of Cu86Mn12Ni₂ Manganin alloy shunt resistors. A precision abrasive trimming system for fine tuning the resistance tolerance of high current Manganin shunt resistors is proposed. The system is shown to be capable of reducing the resistance tolerance of 100 μΩ shunts from their standard value of ±5% to <±1% by removi...

Journal: :Chemical communications 2011
Tanya K Ronson Harriott Nowell Aleema Westcott Michaele J Hardie

A new carboxylic acid functionalised cavitand forms [Cu(3)L(2)] metallo-cryptophanes with Cu(OAc)(2) that can be linked together into dimers with the bridging ligand 1,2-bis(4-pyridyl)ethylene. Reaction of the cavitand with Co(OAc)(2) gives a metallo-cryptophane with a central Co(7) cluster.

Journal: :Nanoscale 2015
Xiang Liu Nianze Liu Mingju Liu Zhi Tao Wenjian Kuang Xiangbing Ji Jing Chen Wei Lei Qing Dai Chi Li Xuehua Li Arokia Nathan

Graphene nanomesh (GNM)-based optoelectronics integrated with quantum dots (QDs) are investigated in this article. The charge transfer mechanism in the QDs/GNM interface is probed in four terminal gated FET-type photodetectors. The insulating ligand is used to make the GNM/ligand/QDs vertically behave like a metal/insulate/semiconductor (MIS) structure to facilitate the charge tunnelling. With ...

2017
Kasper T. Møller Drew Sheppard Dorthe B. Ravnsbæk Craig E. Buckley Etsuo Akiba Hai-Wen Li Torben R. Jensen

Hydrogen has a very diverse chemistry and reacts with most other elements to form compounds, which have fascinating structures, compositions and properties. Complex metal hydrides are a rapidly expanding class of materials, approaching multi-functionality, in particular within the energy storage field. This review illustrates that complex metal hydrides may store hydrogen in the solid state, ac...

Journal: :Angewandte Chemie 2015
Bo Li Chuchu Zhang Beibei Jiang Wei Han Zhiqun Lin

One-dimensional nanowires enable the realization of optical and electronic nanodevices that may find applications in energy conversion and storage systems. Herein, large-scale aligned DNA nanowires were crafted by flow-enabled self-assembly (FESA). The highly oriented and continuous DNA nanowires were then capitalized on either as a template to form metallic nanowires by exposing DNA nanowires ...

2009
BORISLAV BOGDANOVIĆ MICHAEL FELDERHOFF

Complex metal hydrides such as sodium aluminohydride (NaAlH4) and sodium borohydride (NaBH4) are solid-state hydrogen-storage materials with high hydrogen capacities. They can be used in combination with fuel cells as a hydrogen source thus enabling longer operation times compared with classical metal hydrides. The most important point for a wide application of these materials is the reversibil...

2006
Emilio Muñoz Eva Díaz Salvador Ordóñez Aurelio Vega

2017
Yonggang Yao Fengjuan Chen Anmin Nie Steven D. Lacey Rohit Jiji Jacob Shaomao Xu Zhennan Huang Kun Fu Jiaqi Dai Lourdes Salamanca-Riba Michael R. Zachariah Reza Shahbazian-Yassar Liangbing Hu

Nanoparticles (NPs) dispersed within a conductive host are essential for a range of applications including electrochemical energy storage, catalysis, and energetic devices. However, manufacturing high quality NPs in an efficient manner remains a challenge, especially due to agglomeration during assembly processes. Here we report a rapid thermal shock method to in situ synthesize well-dispersed ...

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