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Kalaiselvi, V.
- Preparation and Characterization of Titanium Dioxide Nano-particles by Novel Sol-Gel Method
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PDF Views:381
Authors
Affiliations
1 Department of Physics, Navarasam Arts & Science College for Women, Arachalur, Erode-638101, IN
2 Department of Electronics-UG, Sri Vasavi College, Erode-638316, IN
3 Department of Physics, Sri Sarada College for Women, Salem, IN
1 Department of Physics, Navarasam Arts & Science College for Women, Arachalur, Erode-638101, IN
2 Department of Electronics-UG, Sri Vasavi College, Erode-638316, IN
3 Department of Physics, Sri Sarada College for Women, Salem, IN
Source
ScieXplore: International Journal of Research in Science, Vol 1, No 2 (2014), Pagination: 69-72Abstract
Titanium dioxide (TiO2) finds large area of applications ranging from CMOS to photo catalyst. Titanium dioxide is an important Bio and semiconductor material applied in advanced fields like biomedical engineering, DSSC, gas sensing, [8] cosmetics etc. such biomaterial is synthesized by novel sol-gel method [1], [2]. It has excellent optical transmission as because it is a high bandgap semiconductor, which is transparent to visible light. The Sol-Gel technique is the most attractive technique due to its many advantages such as easy preparation method, less complicating instruments and less time consuming. Here, the Sol-Gel technique was successfully used for synthesising pure TiO2 nano-particles followed by characterization process. TiO2 nano-particles were synthesised using sol-gel technique followed by annealing [10]. These synthesised nano-particles were characterized by various methods such as X-ray Diffraction (XRD), Fourier Transmission Infrared spectroscopy (FTIR), Ultra-Violet visible spectroscopy (UV) and Scanning Electron Microscope (SEM). XRD can be used to show the presence of anatase TiO2 nano-particles. FTIR can be used to calculate the transmission range of TiO2 nano-particles. The UV spectroscopy can be used to lookout the shifting of absorption edges of TiO2 towards visible light region. The SEM range reveals the structure of nano-particles. The mechanism of synthesising TiO2 nano-particles using sol-gel technique is discussed in this paper.Keywords
Band Gap, FTIR, Grain Size, SEM, Sol-Gel, Titanium Dioxide (TiO2), UV, XRD.Full Text
References
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- Comparative Study of Pure Zno and Copper Doped Zno Nanoparticles Synthesised via Co-Precipitation Method
Abstract Views :586 |
PDF Views:725
Authors
Affiliations
1 Department of Physics, Navarasam Arts & Science College for Women, Arachalur, Erode-638101, IN
2 Department of Physics, Vivekananda College of Arts & Science for Women, Tiruchengode, Namakal, IN
3 Navarasam Arts & Science College for Women, Arachalur, Erode-638101, IN
1 Department of Physics, Navarasam Arts & Science College for Women, Arachalur, Erode-638101, IN
2 Department of Physics, Vivekananda College of Arts & Science for Women, Tiruchengode, Namakal, IN
3 Navarasam Arts & Science College for Women, Arachalur, Erode-638101, IN
Source
ScieXplore: International Journal of Research in Science, Vol 1, No 2 (2014), Pagination: 73-77Abstract
The ZnO nanoparticles has unique properties like wide band gap energy, large excitation energy, acts as a functional material near UV emission, optical transparency [1]. It has versatile applications in optoelectronic devices, which creates the immense interest in its synthesis. Pure ZnO&Copper doped ZnO nanoparticles were prepared by Controlled Precipitation method. The structural characterization of the samples was investigated by X-ray diffraction and Scanning electron microscopy. The crystalline size of Pure ZnO nanoparticle is 22nm&Copper doped Nanoparticle is 11 nm is revealed by XRD. SEM micrographs reveals that both images are cluster shaped. The FT-IR showed that various functional groups have been formed. UV visible spectroscopy determines the band gap energy of ZnO nanoparticles.Keywords
Copper Doped ZnO, FTIR, Pure ZnO, SEM, UV, XRD.Full Text
References
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- Green Synthesis and In vitro Applications of Nano Hydroxyapatite for Orthopaedic and Dental Applications
Abstract Views :456 |
PDF Views:192
Authors
Affiliations
1 Department of Physics, Navarasam Arts and Science College for Women, Erode, IN
2 Department of Physics, Sri Sarada College for Women, Salem, Tamil Nadu, IN
1 Department of Physics, Navarasam Arts and Science College for Women, Erode, IN
2 Department of Physics, Sri Sarada College for Women, Salem, Tamil Nadu, IN
Source
ScieXplore: International Journal of Research in Science, Vol 4, No 2 (2017), Pagination: 44-49Abstract
Hydroxyapatite (HAp) is a known Biomaterial applied in Orthopaedic and Dental application as bone implants. Bone can easily be infected by microorganisms. Hydroxyapatite with antibacterial activity can be used for bone and dental treatment defects. In the current study, HAp nanoparticles are synthesized with and without Moringa oleifera leaf extract by wet chemical method assisted by Microwave irradiation. Calcium hydroxide and Orthophosphoric acid are used as calcium and phosphorus source respectively. The synthesized samples were characterized by X-ray Diffraction technique (XRD), Fourier Transform Infrared analysis (FTIR), Scanning Electron Microscopy (SEM) and Energy Dispersive X-ray analysis (EDAX). Further in vitro analysis was performed using gram positive bacteria Staphylococcus aureus, gram negative bacteria Klebsiella pneumonia and fungi Candida albicans. X-ray Diffraction (XRD) techniques investigated the crystalline size for both the samples ranges between 6 to 20 nm. FTIR spectrum confirms the presence of hydroxyl (O-H) and phosphate (PO4 3-) groups. SEM and EDAX predict the presence of spherical shaped morphology with proper proportion of 1.67. In vitro analysis reveals the significant zone of inhibition for both bacteria and fungi.
Keywords
HAp, Invitro Analysis, Synthesis.Full Text
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