Preparation of vitamin B12–TiO2 nanohybrid studied by TEM, FTIR and optical analysis techniques. (July 2015)

• Record Type: Journal Article
• Authors: Gharagozlou, Mehrnaz; Naghibi, Sanaz
• Is Part Of: Materials science in semiconductor processing. Volume 35(2015:Jul.)
• Page Start: 166
• Page End: 173
• Publication Date: 2015-07
• Subjects: TiO2 nanoparticles -- Vitamin B12 -- VB12–TiO2 -- Photoactivity -- DRS -- PL spectroscopy; Semiconductors -- Periodicals; Integrated circuits -- Materials -- Periodicals; Semiconducteurs -- Périodiques; Circuits intégrés -- Matériaux -- Périodiques; Electronic journals; 621.38152
• DOI: 10.1016/j.mssp.2015.03.009
• Languages: English
• ISSNs: 1369-8001

Abstract

Abstract: Vitamin B12 (VB12 ) was applied to modify TiO2 nanoparticles (NPs) for the first time. TiO2 NPs were synthesized via sol–gel method. In the next step, as-synthesized NPs were modified by VB12 . Fourier transform infrared (FTIR) spectroscopy demonstrated the formation of primary bonds between NPs and VB12 . Thermogravimetric analysis (TGA) was also utilized to calculate the proportion of NPs to VB12 . The percentage of VB12 gained was ~20 wt%. The band gap value decreased from 3.27 (TiO2 ) to 3.20 eV and the photocatalytic degradation of Rhodamine B (RB) solution diluted in VB12 –TiO2 NPs. The photoluminescence (PL) intensity increased from 3 to 6 cd. This is because the total pore volume raised about 18% by modifying TiO2 NPs; therefore, the photogenerated charge-carrier recombination rate increases by the VB12 loading.