NDLI: Structural and Opto-electronic Study of a Novel Nanostructure Nb

Content Provider	Springer Nature Link
Author	Habibi, Mohammad Hossein Mokhtari, Reza
Copyright Year	2012
Abstract	A series of Nb–S co-doped titania (NST) nanoparticles was successfully produced in a single step by sol–gel method using titanium (IV) chloride, niobium (V) chloride and thiourea as precursors followed by annealing. The co-doping of sulfur and niobium caused a dramatic red-shift in absorption, improvement in surface properties and enhancement in thermal stability of the anatase phase. The reflectance spectra showed that the band gap of TiO$_{2}$ shifted when the Nb content was low (1 % Nb). Annealing at higher temperature showed an increase in particle size, decrease in absorbance and decrease in band gap energy. This observation was understood in terms of band bending with potential application in solar cells. The NST was further characterized by X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy, scanning electron microscope (SEM) and thermal analysis. The results indicated that Nb and S are homogeneously incorporated into the anatase lattice by substitution of Ti and O, respectively. The XRD showed that Nb–S co-doped titania nanoparticles included the anatase phase at 350 °C calcination temperature. The SEM analysis revealed that the doping of Nb and S did not cause a change in morphology of the catalyst surface. The average crystallite size of the NST with semi-spherical shape was 21 nm.
Starting Page	1425
Ending Page	1429
Page Count	5
File Format	PDF
ISSN	15741443
Journal	Journal of Inorganic and Organometallic Polymers and Materials
Volume Number	22
Issue Number	6
e-ISSN	15741451
Language	English
Publisher	Springer US
Publisher Date	2012-08-24
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nb–S co-doped titania Visible light sensitization Optoelectronics Phase transformation Nanostructure Solar cells Inorganic Chemistry Organic Chemistry Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Polymers and Plastics

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