Investigating the Graphitization Mechanism of SiO2 Nanoparticles in Chemical Vapor Deposition

被引：85

作者：

Bachmatiuk, Alicja ^{[1
]}

Boerrnert, Felix ^{[1
]}

Grobosch, Mandy ^{[1
]}

Schaeffel, Franziska ^{[1
]}

Wolff, Ulrike ^{[1
]}

Scott, Andrew ^{[1
,2
]}

Zaka, Mujtaba ^{[3
]}

Warner, Jamie H. ^{[3
]}

Klingeler, Ruediger ^{[1
]}

Knupfer, Martin ^{[1
]}

Buechner, Bernd ^{[1
]}

Ruemmeli, Mark H. ^{[1
,2
]}

机构：

[1] IFW Dresden, D-01171 Dresden, Germany

[2] Tech Univ Dresden, D-01062 Dresden, Germany

[3] Univ Oxford, Dept Mat, Oxford OX1 3PH, England

来源：

ACS NANO | 2009年 / 3卷 / 12期

关键词：

graphene; carbon nanofibers; carbon nanotubes; carbothermal reduction; nonmetal catalysis; SiC; CARBON NANOTUBE GROWTH; CATALYST-FREE GROWTH; SINGLE; FILMS;

D O I：

10.1021/nn9009278

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The use of SiO2 as a catalyst for graphitic nanostructures, such as carbon nanotubes and graphene, is a new and rapidly developing catalyst system. A key question is whether carbide phases form in the reaction. We show the formation of SiC from SiO2 nanoparticles for the synthesis of graphitic carbon nanostructures via chemical vapor deposition (CVD) at 900 degrees C. Our findings point to the carbothermal reduction of SiO2 in the CVD reaction. The inclusion of triethyl borate apparently accelerates the process and leads to improved yields. The study helps better understand the growth mechanisms at play in carbon nanotube and carbon nanofiber formation when using SiO2 catalysts.

引用

页码：4098 / 4104

页数：7

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