TY - JOUR
T1 - Thermal diffusivity study of nanoparticles and nanorods of titanium dioxide (TiO2) and titanium dioxide coated with cadmium sulfide (TiO2CdS)
AU - Jiménez-Pérez, J. L.
AU - Gutiérrez Fuentes, R.
AU - Sánchez-Sosa, R.
AU - Zapata Torres, M. G.
AU - Correa-Pacheco, Z. N.
AU - Sánchez Ramírez, J. F.
N1 - Publisher Copyright:
© 2015 Elsevier Ltd. All rights reserved.
PY - 2015/6/3
Y1 - 2015/6/3
N2 - 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.
AB - 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.
KW - Nanoparticles
KW - Nanostructures
KW - Semiconductor
KW - Thermal diffusivity
KW - Thermal lens
UR - http://www.scopus.com/inward/record.url?scp=84930272491&partnerID=8YFLogxK
U2 - 10.1016/j.mssp.2015.01.036
DO - 10.1016/j.mssp.2015.01.036
M3 - Artículo
SN - 1369-8001
VL - 37
SP - 62
EP - 67
JO - Materials Science in Semiconductor Processing
JF - Materials Science in Semiconductor Processing
ER -