Synthesis of silver nanoparticles on functional multi-walled carbon nanotubes

Dai, Kai; Shi, Liyi; Fang, Jianhui; Zhang, Yunzhu

doi:10.1016/j.msea.2007.03.052

Cited by 32 publications

(18 citation statements)

References 14 publications

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“…In addition, the exchange of a hydrogen atom of the hydrocarbon chain of CNTs by a hydroxyl group is reflected in the FTIR spectrum as absorptions owing to O-H and C-O stretching vibrations. [41] The acid-treated CNTs underwent Pt and PtNi deposition on their surface by two different methods as illustrated in Figure 2. In the first method, ethylene glycol was used as a reducing agent of platinum and nickel ions in an alkaline sodium hydroxide solution.…”

Section: Resultsmentioning

confidence: 99%

“…Also, the most important feature of the polyol process is the deposition of PtNi nanoparticles on the surface of CNTs without any intermediate molecule or nucleus as in the case of the sensitised method. [34][35][36][37][38][39][40][41][42] In the second fabrication method of the Pt/CNTs and the related PtNi/CNT nanocomposites, G4 PAMAM dendrimer is anchored on the CNTs as a platform to load the Pt or PtNi nanoparticles, and sodium borohydride reacts as a reducing agent for the Pt and Ni ions. It is known that well-defined dendrimers with unique structures and compositions could be used to control the size, shape and solubility of Pt and PtNi nanoparticles on the surface of CNTs.…”

Section: Resultsmentioning

confidence: 99%

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Fabrication of PtNi bimetallic nanoparticles supported on multi-walled carbon nanotubes

Daoush

Imae

2013

Journal of Experimental Nanoscience

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Platinum/nickel bimetallic nanoparticles supported on multi-walled carbon nanotubes (xPtNi/CNTs) were synthesised. The fabrication process includes the chemical modification on the graphene surface of CNTs by acid treatment and the subsequent deposition of Pt or PtNi bimetallic nanoparticles with different compositions of Pt (x ¼ 100, 90, 80 and 70 wt%). The deposition was carried out using ethylene glycol as a reducing agent in the polyol method or using poly (amidoamine) dendrimer as a platform and sodium borohydride as a reducing agent to load the metal nanoparticles on the CNT surface. The structures of the produced PtNi/CNT nanoparticles were investigated by ultraviolet absorption spectra, X-ray diffraction (XRD) and the composite ratio consisting of 70 wt% of metal content and 30 wt% of CNTs was confirmed by the thermogravimetric analysis. The morphology and the phase identification of the produced PtNi/CNT nanoparticles were investigated by high-resolution scanning electron microscope, transmission electron microscope and XRD measurements. It was observed that the deposited Pt and PtNi bimetallic nanoparticles on the surface of CNTs had average particle sizes of 2-16 nm, when they were prepared from the polyol method. On the other hand, the PtNi/CNT nanoparticles prepared by using a dendrimer as an intermediate had a smaller particle size and more uniform size distribution of the quantum dot size ranged from 2 to 4 nm.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Fabrication of PtNi bimetallic nanoparticles supported on multi-walled carbon nanotubes

Daoush

Imae

2013

Journal of Experimental Nanoscience

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“…In this area, as a new class of the multifunctional materials, composites of carbon nanotube-silver nanoparticles (CNT/Ag) have been extensively investigated in the past decade. A few interesting routes have been proposed to attach certain Ag nanoparticles onto CNTs, including radiation-induced reduction of silver ions [7], chemical in situ reduction method [8], electrochemical deposition [9] and electroless deposition with or without the aid of reducing agents etc. [10,11].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of silver nanoparticles on surface-functionalized multi-walled carbon nanotubes by ultraviolet initiated photo-reduction method

Lei

Gao

Liu

et al. 2014

Applied Surface Science

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“…6 γ-irradiation, 7 and other synthesis routes, [8][9][10][11][12][13][14] have been attempted to attach silver nanoparticles (NPs) or nanoclusters on the functionalized CNTs. To prepare well-constructed silver NP-decorated CNTs, however, a simple and effective route is still more desired.…”

mentioning

confidence: 99%

“…5 Hybrid systems of nanomaterials may have collective properties that are drastically different from a simple combination of individual components. Therefore, many approaches and strategies, including the solid-state reaction, 2 vaporizing deposition, 3 surface chemical reduction, 4 electrochemical deposition, 6 γ-irradiation, 7 and other synthesis routes, [8][9][10][11][12][13][14] have been attempted to attach silver nanoparticles (NPs) or nanoclusters on the functionalized CNTs. To prepare well-constructed silver NP-decorated CNTs, however, a simple and effective route is still more desired.…”

mentioning

confidence: 99%

In Situ Synthesis of Highly Dispersed Silver Nanoparticles on Multiwalled Carbon

Hou¹,

Wang²,

Ren-tao³

2011

Bulletin of the Korean Chemical Society

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Since their discovery, 1 carbon nanotubes (CNTs) have been continuously attracting extensive interests in many areas of science and technology and have been the focus of current research for many years due to their unique structure-dependent optical, electrical, and mechanical properties. Recently, silver decorated CNT hybrids are increasingly attracting extensive attention due to their potential applications as catalyst, 2 broad-band optical limiters, 3 electrodes, 4 and advanced materials.5 Hybrid systems of nanomaterials may have collective properties that are drastically different from a simple combination of individual components. Therefore, many approaches and strategies, including the solid-state reaction,6 γ-irradiation, 7 and other synthesis routes, [8][9][10][11][12][13][14] have been attempted to attach silver nanoparticles (NPs) or nanoclusters on the functionalized CNTs. To prepare well-constructed silver NP-decorated CNTs, however, a simple and effective route is still more desired.Here we report on a novel and facile wet-chemical method for the synthesis of silver NP-CNT assemblies, that is based on traditional coordination chemistry and can be generally applied to common metal elements. Key to the synthesis lies in the 3-aminopropyltriethoxysilane (APS)-mediated loading of silver precusors on the functionalized CNTs. The full procedure for preparing silver NP-CNT composites is shown in Figure 1.MWCNTs were obtained from NTP (Shenzhen, China). Lithium aluminum hydride (LiAlH 4 , 95%) and APS (99%) were purchased from Aldrich. Other chemicals used were all analytical pure and purchased from Sinopharm Chemical Reagent Co. Ltd. (Shanghai, China). Surface treatment of MWCNTs followed a standard route. In brief, MWCNTs were reuxed in mixture acids made of nitric acid and sulfuric acid for 2 h to give carboxyl groups modified MWCNT (MWCNT-COOH), 15 followed by reaction with LiAlH 4 in dry tetrahydrofuran (THF) at room temperature for 12 h, resulting in hydroxyl group functionalized MWCNT (MWCNT-OH). The (MWCNT-O-) 3 -Si(CH 2 ) 3 NH 2 intermediate was realized via covalent coupling of MWCNT-OH and an excess of APS in anhydrous toluene at 120 o C for 24 h under the protection of argon (Ar). The (MWCNT-O-) 3 Si(CH 2 ) 3 NH 2 -Ag + complex was obtained by reaction between (MWCNT-O-) 3 Si(CH 2 ) 3 NH 2 and 1.0 mol/L AgNO 3 solution at room temperature for 2 h. The final silver NP loaded MWCNT (MWCNT-O-) 3 Si(CH 2 ) 3 -NH 2 Ag) hybrids were fabricated via in situ reduction with sodium borohydride (NaBH 4 ). The as-prepared mixtures were fully washed with distilled water and absolute ethanol for several times. Finally, the products were collected by centrifugation and the precipitate was dried at 60 o C in vacuum for 10 h.The morphology and dimension of the product were observed by transmission electron microscopy (TEM), which was taken on a Hitachi Model H-600 electron microscopy using an accelerating voltage of 100 kV. The crystalline structure of the sample was characterized by X-ray diffractometer equipped...

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Synthesis of silver nanoparticles on functional multi-walled carbon nanotubes

Cited by 32 publications

References 14 publications

Fabrication of PtNi bimetallic nanoparticles supported on multi-walled carbon nanotubes

Fabrication of PtNi bimetallic nanoparticles supported on multi-walled carbon nanotubes

Synthesis of silver nanoparticles on surface-functionalized multi-walled carbon nanotubes by ultraviolet initiated photo-reduction method

In Situ Synthesis of Highly Dispersed Silver Nanoparticles on Multiwalled Carbon

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