Graphitized hollow carbon spheres and yolk-structured carbon spheres fabricated by metal-catalyst-free chemical vapor deposition
| Autor: | Xufan Li, Zhengwei Pan, Rui Liu, Shannon M. Mahurin, Miaofang Chi, Yen-Jun Chuang, Sheng Dai |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Nanostructure
Materials science Chemistry(all) Carbonization Graphene Oxide Nanoparticle chemistry.chemical_element Nanotechnology 02 engineering and technology General Chemistry Chemical vapor deposition 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Amorphous solid law.invention chemistry.chemical_compound chemistry law General Materials Science 0210 nano-technology Carbon |
| Zdroj: | Carbon. 101:57-61 |
| ISSN: | 0008-6223 |
| DOI: | 10.1016/j.carbon.2016.01.043 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect