Platinum Nanoparticle-embedded Porous Diamond Spherical Particles as an Active and Stable Heterogeneous Catalyst

Abstract Platinum nanoparticle-embedded porous diamond spherical particles (PtNP@PDSPs), as an active and stable catalyst, were fabricated by spray-drying of an aqueous slurry containing nanodiamond (ND) particles, platinum nanoparticles (PtNP), and polyethylene glycol (PEG) to form ND/PtNP/PEG comp...

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Autores principales:	Takeshi Kondo, Takuji Morimura, Tatsumi Tsujimoto, Tatsuo Aikawa, Makoto Yuasa
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/5d70bec29297446495ccc671023b5206
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spelling	oai:doaj.org-article:5d70bec29297446495ccc671023b52062021-12-02T16:08:00ZPlatinum Nanoparticle-embedded Porous Diamond Spherical Particles as an Active and Stable Heterogeneous Catalyst10.1038/s41598-017-08949-02045-2322https://doaj.org/article/5d70bec29297446495ccc671023b52062017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-08949-0https://doaj.org/toc/2045-2322Abstract Platinum nanoparticle-embedded porous diamond spherical particles (PtNP@PDSPs), as an active and stable catalyst, were fabricated by spray-drying of an aqueous slurry containing nanodiamond (ND) particles, platinum nanoparticles (PtNP), and polyethylene glycol (PEG) to form ND/PtNP/PEG composite spherical particles, followed by removal of PEG and a short-time diamond growth on the surface. The average diameter of the PtNP@PDSPs can be controlled in the range of 1–5 μm according to the spray-drying conditions. The Brunauer-Emmett-Teller (BET) surface area and average pore diameter of the PtNP@PDSPs were estimated to be ca. 170–300 m2 g−1 and ca. 4–13 nm, respectively. When ND with the size of 20–30 nm was used, the size of PtNP in the PtNP@PDSP was almost unchanged at 5–6 nm even after high temperature processes and reuse test for catalytic reaction, showing stable supporting. The catalytic activity of the PtNP@PDSPs for the dehydrogenation of cyclohexane was higher than that for a Pt/C catalyst, which is attributed to the stable PtNP support by the three-dimensional packing of ND and efficient mass transfer via the interconnected through-hole pores in the PDSPs.Takeshi KondoTakuji MorimuraTatsumi TsujimotoTatsuo AikawaMakoto YuasaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Takeshi Kondo Takuji Morimura Tatsumi Tsujimoto Tatsuo Aikawa Makoto Yuasa Platinum Nanoparticle-embedded Porous Diamond Spherical Particles as an Active and Stable Heterogeneous Catalyst
description	Abstract Platinum nanoparticle-embedded porous diamond spherical particles (PtNP@PDSPs), as an active and stable catalyst, were fabricated by spray-drying of an aqueous slurry containing nanodiamond (ND) particles, platinum nanoparticles (PtNP), and polyethylene glycol (PEG) to form ND/PtNP/PEG composite spherical particles, followed by removal of PEG and a short-time diamond growth on the surface. The average diameter of the PtNP@PDSPs can be controlled in the range of 1–5 μm according to the spray-drying conditions. The Brunauer-Emmett-Teller (BET) surface area and average pore diameter of the PtNP@PDSPs were estimated to be ca. 170–300 m2 g−1 and ca. 4–13 nm, respectively. When ND with the size of 20–30 nm was used, the size of PtNP in the PtNP@PDSP was almost unchanged at 5–6 nm even after high temperature processes and reuse test for catalytic reaction, showing stable supporting. The catalytic activity of the PtNP@PDSPs for the dehydrogenation of cyclohexane was higher than that for a Pt/C catalyst, which is attributed to the stable PtNP support by the three-dimensional packing of ND and efficient mass transfer via the interconnected through-hole pores in the PDSPs.
format	article
author	Takeshi Kondo Takuji Morimura Tatsumi Tsujimoto Tatsuo Aikawa Makoto Yuasa
author_facet	Takeshi Kondo Takuji Morimura Tatsumi Tsujimoto Tatsuo Aikawa Makoto Yuasa
author_sort	Takeshi Kondo
title	Platinum Nanoparticle-embedded Porous Diamond Spherical Particles as an Active and Stable Heterogeneous Catalyst
title_short	Platinum Nanoparticle-embedded Porous Diamond Spherical Particles as an Active and Stable Heterogeneous Catalyst
title_full	Platinum Nanoparticle-embedded Porous Diamond Spherical Particles as an Active and Stable Heterogeneous Catalyst
title_fullStr	Platinum Nanoparticle-embedded Porous Diamond Spherical Particles as an Active and Stable Heterogeneous Catalyst
title_full_unstemmed	Platinum Nanoparticle-embedded Porous Diamond Spherical Particles as an Active and Stable Heterogeneous Catalyst
title_sort	platinum nanoparticle-embedded porous diamond spherical particles as an active and stable heterogeneous catalyst
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/5d70bec29297446495ccc671023b5206
work_keys_str_mv	AT takeshikondo platinumnanoparticleembeddedporousdiamondsphericalparticlesasanactiveandstableheterogeneouscatalyst AT takujimorimura platinumnanoparticleembeddedporousdiamondsphericalparticlesasanactiveandstableheterogeneouscatalyst AT tatsumitsujimoto platinumnanoparticleembeddedporousdiamondsphericalparticlesasanactiveandstableheterogeneouscatalyst AT tatsuoaikawa platinumnanoparticleembeddedporousdiamondsphericalparticlesasanactiveandstableheterogeneouscatalyst AT makotoyuasa platinumnanoparticleembeddedporousdiamondsphericalparticlesasanactiveandstableheterogeneouscatalyst
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Platinum Nanoparticle-embedded Porous Diamond Spherical Particles as an Active and Stable Heterogeneous Catalyst

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