Cookie‐like Au/NiO Nanoparticles with Optical Gas‐Sensing Properties

Mattei, Giovanni; Mazzoldi, P.; Post, Michael L.; Buso, Dario; Guglielmi, Massimo; Martucci, Alessandro

doi:10.1002/adma.200600930

Cited by 133 publications

(74 citation statements)

References 17 publications

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“…Nickel oxide (NiO), as an important transition metal oxide, is a very promising material and has attracted increasing attention due to its extensive important applications as catalysis [20], electrode materials [21], gas sensor [10,17], and electrochemical films [11]. For example, Gao et al presented that the electrochemical properties of NiO/CNTs composite could be improved greatly.…”

Section: Introductionmentioning

confidence: 99%

The decoration of multi-walled carbon nanotubes with nickel oxide nanoparticles using chemical method

et al. 2016

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In this paper, nickel oxide (NiO) nanoparticles have been fabricated using wet method and deposited on the surface of multi-walled carbon nanotube (MWCNT). To do so, functional groups were introduced on the surface of MWCNTs by treating with concentrated nitric acid. Nickel oxide nanoparticles were formed on the surface of functionalized MWCNTs by incipient wetness impregnation of nickel nitrate, and the resultant product was calcinated in air atmosphere. Characteristics of the NiO/ MWCNT were examined by various techniques, for example, Fourier transform spectroscopy (FTIR), X-ray diffraction analysis (XRD), transmission electron microscopy (TEM), thermogravimetric analyzer (TGA), and nitrogen adsorption-desorption isothermal as well as vibrating sample magnetometer (VSM). The FTIR spectra showed that carboxyl and hydroxyl functional groups existed on the surface of MWNTs after modification by concentrated nitric acid. The pattern of XRD indicated that MWNTs and nickel oxide nanoparticles coexisted in the NiO/MWCNT sample. The TEM images revealed that the NiO nanoparticles were distributed on the surface of the MWNTs, with the size ranging from 5 to 60 nm. Thermogravimetric analysis proved that NiO content decorated on MWCNTs was 80 and 15 wt%. The results of the Brunauer-Emmett-Teller (BET) data showed that the slight increment in the specific surface areas and porosities in the presence of the NiO nanoparticles on the surface of CNT.

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Section: Introductionmentioning

confidence: 99%

The decoration of multi-walled carbon nanotubes with nickel oxide nanoparticles using chemical method

et al. 2016

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“…Silica has been adopted as a reference matrix in order to study the feasibility of this fabrication method together with the eventual effect of the deposition/ annealing procedure on the NP morphology. NiO has also been chosen because, when coupled with gold, it is capable of optical detection and recognition of reducing species such as CO. [3][4][5][6] The goal here is to demonstrate simple and scalable fabrication of a nanoparticle gas sensor based on CDA.…”

Section: Introductionmentioning

confidence: 99%

Self-assembled gold nanoparticle monolayers in sol–gel matrices: synthesis and gas sensing applications

et al. 2009

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“…To effectively expand the performances and broaden the applications of NiO, the focus on the investigation of nickel oxide mixing or doping with metals or other transition metal oxides have attracted much attention in recent decades, because the mixing or doping of other metals or transition metal oxides with nickel oxide can product new composite materials which may exhibit more novel physical and chemical properties [21][22][23][24][25][26]. Noble metals with a great deal of excellent properties are mingled or doped in NiO [27][28][29][30]. Of the noble metals, silver with the lowest price and good properties has been utilized most frequently.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Ag/NiO composite nanosheets and empty microspheres and their highly effective electrocatalytic properties

Pan

et al. 2014

J Sol-Gel Sci Technol

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Ag/NiO composite nanosheets and empty microspheres were fabricated by calcining the precursors synthesized via hydrothermal and solvothermal procedures involved four methods. The as-prepared samples were characterized by thermogravimetric and differential thermal analysis, X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy and field emission scanning electron microscopy, respectively. The electrocatalytic properties of Ag/NiO composites modified on a glassy carbon electrode for p-nitrophenol reduction were investigated. The results showed that Ag/NiO composites exhibited highly enhanced electrocatalytic activity than a bare glassy carbon electrode, for not only the peak current increased clearly but also the corresponding peak potential decreased markedly. As a comparison, two NiO samples were used and the results showed that the peak current has an increase but the peak potentials have a slight decrease by comparing to a bare glassy carbon electrode. The Ag/NiO composites have the potential application in the electrocatalysis for the reduction of nitrophenol materials.

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Cookie‐like Au/NiO Nanoparticles with Optical Gas‐Sensing Properties

Cited by 133 publications

References 17 publications

The decoration of multi-walled carbon nanotubes with nickel oxide nanoparticles using chemical method

The decoration of multi-walled carbon nanotubes with nickel oxide nanoparticles using chemical method

Self-assembled gold nanoparticle monolayers in sol–gel matrices: synthesis and gas sensing applications

Synthesis of Ag/NiO composite nanosheets and empty microspheres and their highly effective electrocatalytic properties

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