نتایج جستجو برای: carbon nanoparticles

تعداد نتایج: 381246  

2014
Shuanglei Yang Zhaohui Wu LanPing Huang Banghong Zhou Mei Lei Lingling Sun Qingyong Tian Jun Pan Wei Wu Hongbo Zhang

Understanding the correlation between physicochemical properties and morphology of nanostructures is a prerequisite for widespread applications of nanomaterials in environmental application areas. Herein, we illustrated that the uniform-sized SnO2@C hollow nanoparticles were large-scale synthesized by a facile hydrothermal method. The size of the core-shell hollow nanoparticles was about 56 nm,...

Journal: :Nature communications 2014
Dohyung Kim Joaquin Resasco Yi Yu Abdullah Mohamed Asiri Peidong Yang

Highly efficient and selective electrochemical reduction of carbon dioxide represents one of the biggest scientific challenges in artificial photosynthesis, where carbon dioxide and water are converted into chemical fuels from solar energy. However, our fundamental understanding of the reaction is still limited and we do not have the capability to design an outstanding catalyst with great activ...

Journal: :Nano letters 2008
Wei Hsuan Hung I-Kai Hsu Adam Bushmaker Rajay Kumar Jesse Theiss Stephen B Cronin

We exploit the strong plasmon resonance of gold nanoparticles in the catalytic decomposition of CO to grow various forms of carbonaceous materials. Irradiating gold nanoparticles in a CO environment at their plasmon resonant frequency generates high temperatures and strong electric fields required to break the CO bond. By varying the laser power, exposure time, and gas flow rate, we deposit amo...

2012
Elizabeth I. Maurer Kristen K. Comfort Saber M. Hussain John J. Schlager Sharmila M. Mukhopadhyay

This study examines the creation of a nano-featured biosensor platform designed for the rapid and selective detection of the bacterium Escherichia coli. The foundation of this sensor is carbon nanotubes decorated with gold nanoparticles that are modified with a specific, surface adherent ribonucleiuc acid (RNA) sequence element. The multi-step sensor assembly was accomplished by growing carbon ...

Journal: :Nanoscale 2012
Raja Das Pradip Pachfule Rahul Banerjee Pankaj Poddar

Herein, for the first time, we report a generalized strategy for the successful synthesis of highly crystalline metal and metal oxide nanoparticles embedded in a carbon matrix by the controlled thermolysis of metal organic frameworks (MOFs). The rationalized synthesis strategy of a broad range of metal and metal oxides nanoparticles, such as Cu/CuO, Co/Co(3)O(4), ZnO, Mn(2)O(3), MgO and CdS/CdO...

2013
Nan Yan Xuhui Zhou Yan Li Fang Wang Hao Zhong Hui Wang Qianwang Chen

We have designed a novel hybrid nanostructure by coating Fe₂O₃ nanoparticles with multi-walled carbon nanotubes to enhance the lithium storage capability of Fe₂O₃. The strategy to prepare Fe₂O₃@MWCNTs involves the synthesis of Fe nanoparticles wrapped in MWCNTs, followed by the oxidation of Fe nanoparticles under carbon dioxide. When used as the anode in a Li-ion battery, this hybrid material (...

Journal: :Chemical communications 2015
Akinori Saito Hiromi Tsuji Iwao Shimoyama Ken-ichi Shimizu Yuta Nishina

Hydrosilane enabled the formation of Pt nanoparticles and the silane functionalization of a carbon support material in one pot. The metal/Si-modified carbon composites are highly durable during catalytic methane oxidation.

Journal: :Chemical communications 2006
Shou-Heng Liu Rong-Feng Lu Shing-Jong Huang An-Ya Lo Shu-Hua Chien Shang-Bin Liu

A novel route has been developed to fabricate ordered carbon mesoporous materials with well-dispersed, highly stable Pt nanoparticles of ca. 2-3 nm on the pore walls using platinum acetylacetonate as the co-feeding carbon and Pt precursor.

Journal: :international journal of nano dimension 0
a. ali moosa technical college –baghdad iraq m. ibrahim department of chemical eng. university of technology baghdad-iraq r. farooq salloom department of production engineering and metallurgy – university of technology baghdad-iraq

in this study, multi wall carbon nanotubes (mwcnts) were synthesized by chemical vapor deposition (cvd) method using two different catalysts (fe nanoparticles) and (ni nanoparticles) with  two different substrates: quartz and alumina. acetylene gas was used as a carbon source and argon as a carrier gas at different temperatures and different times to study the effects of these parameters on cnt...

2014
Ramona Y.G. König Michael Schwarze Reinhard Schomäcker Cosima Stubenrauch

Water-in-oil (w/o) microemulsions were used as a template for the synthesis of monoand bi-metallic nanoparticles. For that purpose, w/o-microemulsions containing H2PtCl6, H2PtCl6 + Pb(NO3)2 and H2PtCl6 + Bi(NO)3, respectively, were mixed with a w/o-microemulsion containing the reducing agent, NaBH4. The results revealed that it is possible to synthesize Pt, PtPb and PtBi nanoparticles of ~3–8 n...

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