Ultralong SiC/SiO2 Nanowires: Simple Gram-Scale Production and Their Effective Blue-Violet Photoluminescence and Microwave Absorption Properties
Ultralong SiC/SiO2 Nanowires: Simple Gram-Scale Production and Their Effective Blue-Violet Photoluminescence and Microwave Absorption Properties
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DOI：
10.1021/acssuschemeng.7b03908
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发表时间：
2018-02
影响因子：
8.4
通讯作者：
Meng Zhang;Jian Zhao;Zhenjiang Li;Shiqi Ding;Yaqi Wang;Guanhao Qiu;A. Meng;Qingdang Li
中科院分区：
文献类型：
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作者：
Meng Zhang;Jian Zhao;Zhenjiang Li;Shiqi Ding;Yaqi Wang;Guanhao Qiu;A. Meng;Qingdang Li
在本工作中，高质量的超长SiC/SiO2纳米线已通过简单的Ni辅助化学气相沉积方法制备。系统表征结果表明，大量纳米线由单晶立方SiC纳米线核和均匀的非晶SiO2壳层组成，相互缠结在一起，构成了长度约为17 cm的宏观薄膜。值得注意的是，在自制反应器的辅助下，合成的SiC/SiO2纳米线的产量达到克级（2.164 g），超过了传统工艺的产量。此外，在2-18 GHz频率范围内，SiC/SiO2超长纳米线表现出明显的蓝移蓝紫发光和良好的微波吸收性能，表明其在光电子器件和电磁吸收领域具有潜在的应用前景。
In the present work, high-quality ultralong SiC/SiO2 nanowires have been prepared via simple Ni-assisted chemical vapor deposition approach. Systematic characterization results reveal that plenty of nanowires, which consist of single-crystalline cubic SiC nanowire cores and uniform amorphous SiO2 shells, entangle with each other and construct a macroscopic thin film with the length of approximately 17 cm. Remarkably, the yield of the as-synthesized SiC/SiO2 nanowires achieve gram scale (2.164 g) under the assistance of the ingenious homemade reactor, exceeding the yield through traditional techniques. Furthermore, the ultralong SiC/SiO2 nanowires exhibit blue-violet luminescence with significant blue shift and good microwave absorption properties in the frequency range of 2–18 GHz, indicating their potential application in optical-electronic devices and electromagnetic absorption fields.