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Issue 43, 2017
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Synthesis of novel hierarchical SiC–SiO2 heterostructures via a catalyst free method

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Abstract

Novel hierarchical SiC–SiO2 heterostructures were synthesized on a graphite paper substrate via a catalyst free method. The morphology, microstructure and composition were characterized by SEM, HR-TEM, EDS and XRD. Results revealed that the hierarchy of SiC–SiO2 heterostructures consisted of nanochain structures and nanoweb structures located in different layers of the graphite paper substrate. The nanochain structures were SiC–SiO2 nanochains coated by an exterior SiO2 shell, in which the SiO2 beads were chained to the SiC nanostructure. The nanoweb structures showed that many intersecting SiC nanostructures were encapsulated in irregular SiO2 agglomerates. The formation of hierarchical SiC–SiO2 heterostructures was dependent on the synthesis temperature. The VS process followed by a modulation process was proposed to elucidate the formation mechanism of such hierarchical SiC–SiO2 heterostructures.

Graphical abstract: Synthesis of novel hierarchical SiC–SiO2 heterostructures via a catalyst free method

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Publication details

The article was received on 26 Jun 2017, accepted on 05 Oct 2017 and first published on 05 Oct 2017


Article type: Paper
DOI: 10.1039/C7CE01182B
Citation: CrystEngComm, 2017,19, 6540-6546
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    Synthesis of novel hierarchical SiC–SiO2 heterostructures via a catalyst free method

    J. Dai, J. Sha, Z. Zhang, J. Shao, Y. Zu and M. Lei, CrystEngComm, 2017, 19, 6540
    DOI: 10.1039/C7CE01182B

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