Graphitized hollow carbon spheres and yolk-structured carbon spheres fabricated by metal-catalyst-free chemical vapor deposition

Xufan Li; Miaofang Chi; Shannon M. Mahurin; Rui Liu; Yen Jun Chuang; Sheng Dai; Zhengwei Pan

doi:10.1016/j.carbon.2016.01.043

Graphitized hollow carbon spheres and yolk-structured carbon spheres fabricated by metal-catalyst-free chemical vapor deposition

Xufan Li, Miaofang Chi, Shannon M. Mahurin, Rui Liu, Yen Jun Chuang, Sheng Dai, Zhengwei Pan

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

Abstract

Hard-sphere-templating method has been widely used to synthesize hollow carbon spheres (HCSs), in which the spheres were firstly coated with a carbon precursor, followed by carbonization and core removal. The obtained HCSs are generally amorphous or weakly graphitized (with the help of graphitization catalysts). In this work, we report on the fabrication of graphitized HCSs and yolk-shell Au@HCS nanostructures using a modified templating method, in which smooth, uniform graphene layers were grown on SiO₂ spheres or Au@SiO₂ nanoparticles via metal-catalyst-free chemical vapor deposition (CVD) of methane. Our work not only provides a new method to fabricate high-quality, graphitized HCSs but also demonstrates a reliable approach to grow quality graphene on oxide surfaces using CVD without the presence of metal catalysts.

Original language	English
Pages (from-to)	57-61
Number of pages	5
Journal	Carbon
Volume	101
DOIs	https://doi.org/10.1016/j.carbon.2016.01.043
State	Published - 2016

Funding

Z.W.P. thanks the support of a NSF CAREER grant ( DMR-0955908 ). Work by S.D. and S.M.M. was supported by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), Chemical Sciences, Geosciences, and Biosciences Division . The TEM work was performed through a user project supported by the Oak Ridge National Laboratory's Center for Nanophase Materials Science , which is a DOE Office of Science user facility.

Funders	Funder number
Oak Ridge National Laboratory
National Science Foundation	DMR-0955908
U.S. Department of Energy
Office of Science
Basic Energy Sciences
Chemical Sciences, Geosciences, and Biosciences Division

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10.1016/j.carbon.2016.01.043

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title = "Graphitized hollow carbon spheres and yolk-structured carbon spheres fabricated by metal-catalyst-free chemical vapor deposition",

abstract = "Hard-sphere-templating method has been widely used to synthesize hollow carbon spheres (HCSs), in which the spheres were firstly coated with a carbon precursor, followed by carbonization and core removal. The obtained HCSs are generally amorphous or weakly graphitized (with the help of graphitization catalysts). In this work, we report on the fabrication of graphitized HCSs and yolk-shell Au@HCS nanostructures using a modified templating method, in which smooth, uniform graphene layers were grown on SiO2 spheres or Au@SiO2 nanoparticles via metal-catalyst-free chemical vapor deposition (CVD) of methane. Our work not only provides a new method to fabricate high-quality, graphitized HCSs but also demonstrates a reliable approach to grow quality graphene on oxide surfaces using CVD without the presence of metal catalysts.",

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T1 - Graphitized hollow carbon spheres and yolk-structured carbon spheres fabricated by metal-catalyst-free chemical vapor deposition

AU - Li, Xufan

AU - Chi, Miaofang

AU - Mahurin, Shannon M.

AU - Liu, Rui

AU - Chuang, Yen Jun

AU - Dai, Sheng

AU - Pan, Zhengwei

PY - 2016

Y1 - 2016

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AB - Hard-sphere-templating method has been widely used to synthesize hollow carbon spheres (HCSs), in which the spheres were firstly coated with a carbon precursor, followed by carbonization and core removal. The obtained HCSs are generally amorphous or weakly graphitized (with the help of graphitization catalysts). In this work, we report on the fabrication of graphitized HCSs and yolk-shell Au@HCS nanostructures using a modified templating method, in which smooth, uniform graphene layers were grown on SiO2 spheres or Au@SiO2 nanoparticles via metal-catalyst-free chemical vapor deposition (CVD) of methane. Our work not only provides a new method to fabricate high-quality, graphitized HCSs but also demonstrates a reliable approach to grow quality graphene on oxide surfaces using CVD without the presence of metal catalysts.

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Graphitized hollow carbon spheres and yolk-structured carbon spheres fabricated by metal-catalyst-free chemical vapor deposition

Abstract

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