Gas phase synthesis of metallic and bimetallic catalyst nanoparticles by rod-to-tube type spark discharge generator

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@article{e6cd64a9166f4947b8ed81bee7d4c506,
title = "Gas phase synthesis of metallic and bimetallic catalyst nanoparticles by rod-to-tube type spark discharge generator",
abstract = "We report a novel design of spark discharge generator which consists of rod and tube electrodes for the gas phase synthesis of catalyst nanoparticles. We synthesized monometallic catalyst particles (Fe, Ni, Cu) and bimetallic particles (Co-Fe, Co-Ni) with the rod-to-tube type spark discharge generator (R-T SDG). Time stability and size distribution of the particles were studied by a scanning mobility particle sizer with an electrometer. We found that R-T SDG maintains a constant size distribution of the nanoparticles for 24 h. These nanoparticles have a geometric mean mobility diameter of 5.17, 5.46, 4.54, 4.90, and 4.72 nm of Fe, Ni, Cu, Co-Fe and Co-Ni, respectively. A high-resolution transmission electron microscope (HRTEM) equipped with X-rays energy dispersive spectrometer (EDS) was used to obtain morphology, composition and structure of the nanoparticles. From HRTEM micrographs, we found separated nanoparticles and small agglomerates (< 8 nm), whereas EDS showed highly pure metallic and bimetallic nanoparticles. As an application of the aerosol produced catalyst nanoparticles, single-walled carbon nanotubes were synthesized using floating catalyst chemical vapor deposition technique with R-T SDG produced iron particles as a catalyst.",
keywords = "Axial flow, Bimetallic nanoparticles, Carrier gas, Mobility diameter, SWCNTs",
author = "Saeed Ahmad and Patrik Laiho and Qiang Zhang and Hua Jiang and Aqeel Hussain and Yongping Liao and Ding, {Er Xiong} and Nan Wei and Kauppinen, {Esko I.}",
year = "2018",
month = "9",
doi = "10.1016/j.jaerosci.2018.05.011",
language = "English",
volume = "123",
pages = "208--218",
journal = "Journal of Aerosol Science",
issn = "0021-8502",
publisher = "Elsevier Limited",

}

RIS - Lataa

TY - JOUR

T1 - Gas phase synthesis of metallic and bimetallic catalyst nanoparticles by rod-to-tube type spark discharge generator

AU - Ahmad, Saeed

AU - Laiho, Patrik

AU - Zhang, Qiang

AU - Jiang, Hua

AU - Hussain, Aqeel

AU - Liao, Yongping

AU - Ding, Er Xiong

AU - Wei, Nan

AU - Kauppinen, Esko I.

PY - 2018/9

Y1 - 2018/9

N2 - We report a novel design of spark discharge generator which consists of rod and tube electrodes for the gas phase synthesis of catalyst nanoparticles. We synthesized monometallic catalyst particles (Fe, Ni, Cu) and bimetallic particles (Co-Fe, Co-Ni) with the rod-to-tube type spark discharge generator (R-T SDG). Time stability and size distribution of the particles were studied by a scanning mobility particle sizer with an electrometer. We found that R-T SDG maintains a constant size distribution of the nanoparticles for 24 h. These nanoparticles have a geometric mean mobility diameter of 5.17, 5.46, 4.54, 4.90, and 4.72 nm of Fe, Ni, Cu, Co-Fe and Co-Ni, respectively. A high-resolution transmission electron microscope (HRTEM) equipped with X-rays energy dispersive spectrometer (EDS) was used to obtain morphology, composition and structure of the nanoparticles. From HRTEM micrographs, we found separated nanoparticles and small agglomerates (< 8 nm), whereas EDS showed highly pure metallic and bimetallic nanoparticles. As an application of the aerosol produced catalyst nanoparticles, single-walled carbon nanotubes were synthesized using floating catalyst chemical vapor deposition technique with R-T SDG produced iron particles as a catalyst.

AB - We report a novel design of spark discharge generator which consists of rod and tube electrodes for the gas phase synthesis of catalyst nanoparticles. We synthesized monometallic catalyst particles (Fe, Ni, Cu) and bimetallic particles (Co-Fe, Co-Ni) with the rod-to-tube type spark discharge generator (R-T SDG). Time stability and size distribution of the particles were studied by a scanning mobility particle sizer with an electrometer. We found that R-T SDG maintains a constant size distribution of the nanoparticles for 24 h. These nanoparticles have a geometric mean mobility diameter of 5.17, 5.46, 4.54, 4.90, and 4.72 nm of Fe, Ni, Cu, Co-Fe and Co-Ni, respectively. A high-resolution transmission electron microscope (HRTEM) equipped with X-rays energy dispersive spectrometer (EDS) was used to obtain morphology, composition and structure of the nanoparticles. From HRTEM micrographs, we found separated nanoparticles and small agglomerates (< 8 nm), whereas EDS showed highly pure metallic and bimetallic nanoparticles. As an application of the aerosol produced catalyst nanoparticles, single-walled carbon nanotubes were synthesized using floating catalyst chemical vapor deposition technique with R-T SDG produced iron particles as a catalyst.

KW - Axial flow

KW - Bimetallic nanoparticles

KW - Carrier gas

KW - Mobility diameter

KW - SWCNTs

UR - http://www.scopus.com/inward/record.url?scp=85047602001&partnerID=8YFLogxK

U2 - 10.1016/j.jaerosci.2018.05.011

DO - 10.1016/j.jaerosci.2018.05.011

M3 - Article

VL - 123

SP - 208

EP - 218

JO - Journal of Aerosol Science

JF - Journal of Aerosol Science

SN - 0021-8502

ER -

ID: 21777294