Organometallically Anisotropic Growth of Ultralong Sb2Se3 Nanowires with Highly Enhanced Photothermal Response
Organometallically Anisotropic Growth of Ultralong Sb2Se3 Nanowires with Highly Enhanced Photothermal Response
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具有高度增强光热响应的超长 Sb2Se3 纳米线的有机金属各向异性生长
DOI：
10.1021/acsami.5b11507
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发表时间：
2016-02-03
影响因子：
9.5
通讯作者：
Yang, Qing
中科院分区：
文献类型：
--
作者：
Chen, Guihuan;Zhou, Jun;Yang, Qing
通过一种简单的有机金属合成路线，在180-240 ℃的温度下，由三苯基锑（III）和二苄基二硒醚在油胺中反应，在不添加任何其他添加剂的情况下，成功地制备出了超长的斜方晶Sb 2Se 3纳米线。深入研究了Sb 2Se 3纳米线的形成和生长机理，发现Sb 2Se 3纳米线的各向异性生长是由于斜方晶体结构的本征性质和油胺的弱键合辅助作用的协同作用，纳米线的直径几乎不变，并且在合成路线中通过增加反应时间可以容易地延长纳米线的长度。此外，首先在UV光（320-390 nm）的照射下评估Sb 2Se 3纳米线的光热响应，并且特别注意的是，与体Sb 2Se 3相比，Sb 2Se 3纳米线表现出高度增强的光热响应（强度的两倍以上）。此外，Sb 2Se 3纳米线显示出优异的光热性能，在相同条件下上级纳米结构的二氧化钛和硅粉。
Ultralong orthorhombic Sb2Se3 nanowires have been successfully fabricated via an alternative facile organometallic synthetic route from the reaction of triphenylantimony(III) with dibenzyldiselenide in oleylamine at 180-240 degrees C without any other additives. The formation and growth mechanism of the Sb2Se3 nanowires is intensively investigated, and it is found that the anisotropic growth of the nanowires with almost constant diameters is resulted from the synergistic effects of the intrinsic property of the orthorhombic crystal structure and the weak binding assistance of oleylamine, and the length of the nanowires can be elongated easily by increasing reaction time in the synthetic route. Moreover, the photothermal response of the Sb2Se3 nanowires is first evaluated under illumination of UV light (320-390 nm), and it is especially noted that the Sb2Se3 nanowires exhibit highly enhanced photothermal responses (more than two times the intensity) as compared to the bulk Sb2Se3. In addition, the Sb2Se3 nanowires show excellent light-to-heat performance, which is superior to that of the nanostructured titanium dioxide and silicon powder under the same conditions.