Thermal diffusivity study of nanoparticles and nanorods of titanium dioxide (TiO2) and titanium dioxide coated with cadmium sulfide (TiO2CdS)

被引:10
|
作者
Jimenez-Perez, J. L. [1 ]
Gutierrez Fuentes, R. [2 ,3 ]
Sanchez-Sosa, R. [2 ]
Zapata Torres, M. G. [2 ]
Correa-Pacheco, Z. N. [4 ]
Sanchez Ramirez, J. F. [5 ]
机构
[1] Unidad Profes Interdisciplinaria Ingn & Tecnol Av, Mexico City 07340, DF, Mexico
[2] Ctr Invest Ciencia Aplicada & Tecnol Avanzada, Mexico City 11500, DF, Mexico
[3] UPVT, Santiaguito Tlalcilalcal 50904, Edo Mexico, Mexico
[4] Inst Politecn Nacl, Ctr Desarrollo Prod Biot CEPROBI, Yautepec 62730, Morelos, Mexico
[5] Ctr Invest Biotecnol Aplicada, Tlaxcala 90700, Mexico
关键词
Nanoparticles; Nanostructures; Semiconductor; Thermal lens; Thermal diffusivity; HEAT-TRANSFER; SOL-GEL; NANOFIBERS; CONDUCTIVITY; FIBERS; WATER; FABRICATION; NANOFLUIDS;
D O I
10.1016/j.mssp.2015.01.036
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Thermal lens (TL) technique was used to obtain the thermal diffusivity of nanoparticles (nPs) and nanorods (nRs) of TiO2 and TiO2CdS, respectively. The nanoparticles with spherical shape have 25 nm diameter and rod-shapes have different nanometric diameters by length measurements, both contained in ethanol. The nPs and nRs have been successfully prepared by sol-gel and electrospinning techniques. TL provides reliable alternative to measure the thermal diffusivities of semitransparent materials and low thermal diffusivities. The results show that for nanoparticles with different concentrations, for a higher concentration there is an increase in the thermal diffusivity. On the other hand, comparing different nanostructure forms (nanoparticles and nanorods) for the same concentration, a higher value of thermal diffusivity is observed for nanorods. Complementary techniques such as transmission electron microscopy (TEM), scanning electron microscopy (SEM) and UV-vis spectroscopy were employed to characterize the nanoparticles and nanorods in order to study their morphology, average particle size and absorption spectra. This investigation has future applications for solar cells and electrochemical cells. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:62 / 67
页数:6
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