Sb掺杂SnO_2纳米颗粒的微波辅助溶剂热合成

Microwave assisted solvothermal synthesis of antimony-doped tin oxide nanparticles

在密闭反应容器中,通过微波辐照加热SnCl4.5H2O和SbCl3的乙醇溶液制备Sb掺和SnO2(ATO)纳米晶颗粒.研究前驱溶液的浓度变化对ATO纳米晶的晶粒尺寸和形貌的影响,并对ATO纳米晶体和纳米颗粒的形成机制进行了初步探索.采用X射线衍射仪(XRD)、高分辨透射电镜(HR-TEM)、傅立叶转换红外光谱(FT-IR)和氮吸附比表面积测定仪(BET)对试样进行了表征.当前驱溶液浓度由0.05 mol/L增加到1.0 mol/L,ATO纳米晶(5 nm)逐渐团聚并生长成较大的纳米颗粒(50 nm).结果表明,通过改变前驱溶液的浓度,可控制ATO纳米晶的晶粒尺寸和形貌.

Nano-sized antimony-doped tin oxide （ATO） particles were synthesized by a microwave irradiation heating technique from an ethanol solutions of SnC14 · 5H2O and SbCl3. The effect of different precursor solutions on the crystal sizes and morphologies was studied, and the formation of nanoerystals and nanopartieles was discussed. The particles were characterized by X-ray diffraction （XRD）, high resolution transmission electron microscopy （HR-TEM）, Fourier transform infrared spectroscopy （FT-IR）, and nitrogen adsorption specific surface area test machine （ BET ）. As the increase of the precursor solution from 0. 05 moL/L to 1.0 moL/L, ATO nanoerystals （5 nm） agglomerated and grew to be bigger nanoparticles （50 nm）. The results indicated that ATO crystal sizes and morphologies can be controlled by changing the concentration of the precursor solution.