High-yield synthesis of silicon carbide nanowires by solar and lamp ablation

被引:20
作者
Lu, Hai-bo [1 ,2 ]
Chan, Benjamin C. Y. [1 ,2 ]
Wang, Xiaolin [3 ]
Chua, Hui Tong [1 ]
Raston, Colin L. [2 ,4 ]
Albu-Yaron, Ana [5 ]
Levy, Moshe [5 ]
Popowitz-Biro, Ronit [6 ]
Tenne, Reshef [5 ]
Feuermann, Daniel [7 ]
Gordon, Jeffrey M. [7 ]
机构
[1] Univ Western Australia, Sch Mech & Chem Engn, Ctr Strateg Nanofabricat, Crawley, WA 6009, Australia
[2] Univ Western Australia, Sch Chem & Biochem, Ctr Strateg Nanofabricat, Crawley, WA 6009, Australia
[3] Univ Tasmania, Sch Engn, Hobart, Tas 7001, Australia
[4] Flinders Univ S Australia, Sch Chem & Phys Sci, Bedford Pk, SA 5042, Australia
[5] Weizmann Inst Sci, Dept Mat & Interfaces, IL-76100 Rehovot, Israel
[6] Weizmann Inst Sci, Electron Microscopy Unit, IL-76100 Rehovot, Israel
[7] Ben Gurion Univ Negev, Jacob Blaustein Inst Desert Res, Dept Solar Energy & Environm Phys, IL-84990 Sede Boqer Campus, Israel
基金
欧洲研究理事会; 以色列科学基金会;
关键词
NANOSTRUCTURES; NANOPARTICLES; LIGHT; MOS2;
D O I
10.1088/0957-4484/24/33/335603
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We report a reasonably high yield (similar to 50%) synthesis of silicon carbide (SiC) nanowires from silicon oxides and carbon in vacuum, by novel solar and lamp photothermal ablation methods that obviate the need for catalysis, and allow relatively short reaction times (similar to 10 min) in a nominally one-step process that does not involve toxic reagents. The one-dimensional core/shell beta-SiC/SiOx nanostructures-characterized by SEM, TEM, HRTEM, SAED, XRD and EDS-are typically several microns long, with core and outer diameters of about 10 and 30 nm, respectively. HRTEM revealed additional distinctive nanoscale structures that also shed light on the formation pathways.
引用
收藏
页数:7
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