The decoration of carbon nanotubes by metal nanoparticles

Satishkumar, B. C.; Vogl, Erasmus M.; Govindaraj, A.; Rao, C. N. R.

doi:10.1088/0022-3727/29/12/037

Cited by 223 publications

(113 citation statements)

References 11 publications

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“…Other supported catalysts were prepared by either incipient wetness impregnation or a reflux method in ethylene glycol, as described by Satishkumar et al [19]. The precursor metals were 5% Pd(NH 3 ) 2 (NO 2 ) 2 and 5% Pt(NH 3 ) 2 (NO 2 ) 2 solutions (STREM Chemicals), both metals were diluted to a 1% solution prior to use.…”

Section: Supported Catalystsmentioning

confidence: 99%

Hydrogen spillover to enhance hydrogen storage—study of the effect of carbon physicochemical properties

Lueking

Yang

2004

Applied Catalysis A: General

300

198

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Hydrogen storage in carbon materials can be increased by hydrogen spillover from a supported catalyst; a systematic investigation of various carbon supports was used to better understand how hydrogen spillover affects hydrogen storage on carbon materials. Secondary spillover experiments effectively eliminated experimental variables associated with primary spillover, evidenced by materials clustering around the carbon type for a variety of supported catalyst-carbon mixtures. Providing a supported catalyst to act as a hydrogen source enhances the overall hydrogen uptake of a carbon material; for example, simple mixing of carbon nanotubes with supported palladium increased the uptake of the carbons by a factor of three. However, the baseline adsorption of the carbon was the predominant factor in the magnitude of the overall hydrogen uptake, even when hydrogen spillover was active. Three observations illustrated that a dynamic steady-state model is needed for predictive capacity of hydrogen spillover.

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Section: Supported Catalystsmentioning

confidence: 99%

Hydrogen spillover to enhance hydrogen storage—study of the effect of carbon physicochemical properties

Lueking

Yang

2004

Applied Catalysis A: General

300

198

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“…Compared with pristine surface of MWCNTs, nanoparticles are easy to attach nanotube surfaces with functional groups (such as carboxylic and hydroxyl groups). It has been reported that functional groups on carbon nanotubes can act as nucleation centers for metal ions [15]. ATO-MWCNT nanocomposite electrode materials with large surface areas have led to multiple advances in the performance of Li ion batteries by providing shorter path lengths for both electron and Li ion transport, higher electrode/electrolyte contact area, better accommodation of the strain of the Li ion insertion/extraction, and much easier conductive pathways via the MWCNTs.…”

Section: Methodsmentioning

confidence: 99%

Thin Film Nanostructured ATO and ATO Based Composite Anodes for Li-Ion Batteries

et al. 2014

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In this study, antimony doped tin oxide lms were deposited on multiwall carbon nanotube buckypaper and Cr coated stainless steel substrates using a radio frequency magnetron sputtering process in a mixed oxygen/argon (5/95) gas environment. The depositions of antimony doped tin oxide on the multiwall carbon nanotube buckypaper and stainless steel substrates were carried out using the parameters organized as: target composition antimony doped tin oxide (SnO2:Sb = 90:10 wt%); total system pressure 1 Pa; sputtering power (RF) 100 W. The surface morphology of the antimony doped tin oxide lms was investigated by eld emission scanning electron microscopy. The crystallographic structure of the samples was determined by X-ray diraction. The electrochemical properties of antimony doped tin oxide and antimony doped tin oxidemultiwall carbon nanotube nanocomposite anodes containing CR2016 cells were measured by galvanostatic chargedischarge experiments.

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“…In this work decoration methods of electron microscopy are used. The decora-tion method can be used for investigation of layer structure [2], finding carbon nanotubes in the sample [3], detecting layer defects [4] and dislocations [5]. The literature on surface potential measurement using the decoration technique is practically non-existent.…”

Section: Introductionmentioning

confidence: 99%

Surface charge decoration methods

Montrimas¹

2006

Lithuanian J. Phys.

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Charge distribution on layer surface is determined by homogeneity of a layer. Surface charge can also be used for information recording. Charge distribution in layers with high surface potential is investigated by the method of layer decoration in air with tungsten oxide. In such a case, round particles of tungsten oxide from 1 to 10 µm in diameter are formed. The larger the surface charge of a layer, the more rounded are particles of tungsten oxide. In addition, surface charge of a layer stimulates joining of decorating particles into chains. Increase of tangential electric field causes increasingly regular orientation of those chains in the direction of the field. Layers with a lower surface potential are decorated in vacuum with Se islets. This method makes it possible to measure layer surface charge distribution with precision higher than 1 µm. If the decorated layer is charged negatively, action of the surface charge causes Se islets to form chains, whereas positive surface charge causes a decrease of Se islets by a factor of 2 to 7 in comparison with size of Se islets in areas without surface charge. This effect can be used for information recording. Positive surface charge of a layer is arranged in circular zones.

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The decoration of carbon nanotubes by metal nanoparticles

Cited by 223 publications

References 11 publications

Hydrogen spillover to enhance hydrogen storage—study of the effect of carbon physicochemical properties

Hydrogen spillover to enhance hydrogen storage—study of the effect of carbon physicochemical properties

Thin Film Nanostructured ATO and ATO Based Composite Anodes for Li-Ion Batteries

Surface charge decoration methods

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