二硫化钼与Ta2O5非均相混合纳米粒子的合成与表征

Sonali Samantra, S. S. Ray
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摘要

金属纳米粒子的合成是纳米技术学术和应用研究的一个活跃领域。它也是一种融合技术,在各个领域都有令人着迷的多学科应用。纳米粒子一直是一个传统的领域,但如果我们继续进一步缩小尺寸,我们就会进入量子点领域(<10纳米),以示踪剂、标签、传感器等形式应用。合成了二硫化钼和钽纳米颗粒,并通过FESEM、FTIR、XRD、UV-Vis光谱、荧光光谱等方法对其进行了表征。在FESEM中,钼纳米粒子的尺寸在22 ~ 50 nm之间,钽纳米粒子的尺寸在34.72 ~ 72.45 nm之间。EDAX分析表明,钼纳米颗粒的组成为氢(H)、钼(Mo)、氮(N)、氧(O)和氟(F),分别占32.3%、66.3%、0.43%、0.32%和0.5%。EDAX分析表明,钽纳米颗粒的组成为氢(H)、钽(Ta)、氧(O)、氮(N)和氟(F),分别为35.9%、50%、4.8%、2.01%和7.17%。对二硫化钼图像的XRD分析表明,合成的纳米颗粒在本质上是晶体状的。平均结晶度为7.93 nm。在[2 0 0]和[1 10 10]平面上观察到结晶度为8.05和12.20 nm的钽纳米颗粒。采用MTT法检测纳米颗粒的生物相容性。合成的纳米颗粒的荧光光谱测定证实了其荧光特性,这很可能是由量子点引起的。此外,荧光特性也被用于细胞成像。该研究是第一次将Mo和Ta量子点应用于生物医学领域,进一步优化和实施纳米粒子在生物领域的应用是必要的。
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Heterogeneous Mixture of Nanoparticles from MoS2 and Ta2O5: Synthesis and Characterization
The synthesis of metallic nanoparticles is an active area of academic and application research in nanotechnology. It is also an amalgamating technology which has fascinating multi-disciplinary application in various sections. Nanoparticles has been a conventional but field if we go on further decreasing the size we enter the field of quantum dots (<10 nm) with application in the form of tracers, labels, sensors etc. Molybdenum disulfide and tantalum nanoparticles were synthesized and characterized through FESEM, FTIR, XRD,UV-Vis spectroscopy, spectrofluorimetry, etc. The size of the synthesized nanoparticles as observed in FESEM were found to be in the range of 22 to 50 nm for molybdenum nanoparticle and 34.72 to 72.45 nm in case of tantalum. The EDAX analysis shows the composition of molybdenum nanoparticle as hydrogen(H), molybdenum(Mo), nitrogen(N), oxygen(O) and fluorine(F) with 32.3%, 66.3%, 0.43%, 0.32% and 0.5% respectively. The EDAX analysis show the composition of tantalum nanoparticle as hydrogen(H), tantalum(Ta), oxygen(O), nitrogen(N) and fluorine(F) with 35.9%,50%,4.8%,2.01%,7.17%. The XRD analysis of molybdenum disulfide images indicates the synthesized nanoparticle as crystalline in nature. The average crystallinity was found to be 7.93 nm. Tantalum nanoparticles with a crystallinity of 8.05 and 12.20 nm were observed as [2 0 0] and [1 1 0] planes. Biocompatibility of the synthesized nanoparticles was examined by MTT assay. The spectrofluorometry of the synthesized nanoparticles proves the fluorescence property which is most probably because of the quantum dots. Furthermore, the fluorescence property was also used for the cell imaging. The study is a first its kind to exercise the use of Mo and Ta quantum dots in the field of biomedical application and further work is necessary for optimization and implementation of the nanoparticles in the biological sector.
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