Effect of annealing on TiO2 nanoparticles

Sugapriya, S.; Sriram, Rashmi; Lakshmi, Seetha

doi:10.1016/j.ijleo.2013.03.040

Cited by 73 publications

(24 citation statements)

References 38 publications

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“…The HR-SEM investigations of all the nano TiO 2 samples reveal that the crystallites are nanometre size. Therefore the growth of Nano phase crystalline TiO 2 particles is accelerated at higher calcinating temperature [34]. All samples shows uniform morphology in the form of TiO 2 nano clusters.…”

Section: Ftir Analysismentioning

confidence: 95%

Synthesis and Charecterization Studies of Nano Tio2 Prepared via Sol-Gel Method

Perumal¹

2014

IJRET

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Nanoparticles of titanium dioxide doped with Fe2+ ions have been synthesized via sol-gel technique using Titanium tetraisopropoxide (TTIP) and ferrous sulphate as a precursors. The synthesized nanopowders were characterized by Powder X-ray Diffraction (PXRD), Scanning Electron Microscope (SEM), Fourier Transform Infrared (FTIR), Ultraviolet Visible (UV-Vis) and Photoluminescence (PL) Spectroscopy. PXRD pattern indicates the presence of pure crystalline anatase phase TiO 2 with average crystallite size of 14 nm. FTIR spectra showed the vibrational bands of Ti-O networks. The morphology of the as prepared samples and chemical constituents of the nanoparticles studied using SEM and EDAX analysis. From the UV-Vis spectra and PL spectra the optical properties of TiO 2 were studied and discussed.

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Section: Ftir Analysismentioning

confidence: 95%

Synthesis and Charecterization Studies of Nano Tio2 Prepared via Sol-Gel Method

Perumal¹

2014

IJRET

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“…A third stage of 4 % weight loss recorded between 200 and 600°C may be due to the complete crystallization of TiO 2 . A meager weight loss of 1 % predicted between 600 and 1200°C could be due to the phase transformation of TiO 2 from anatase to rutile [33]. According to DTA curve a sharp exothermic peak with a maximum at 250°C supporting the decomposition of organic materials.…”

Section: Thermal Analysismentioning

confidence: 94%

Influence of thermal annealing on the photo catalytic properties of TiO2 nanoparticles under solar irradiation

Prasannalakshmi

Shanmugam

Kannadasan

et al. 2015

J Mater Sci: Mater Electron

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Nanosized TiO 2 particles have been synthesized by a sol-gel method and studied for their thermal, structural, optical, morphological, and photocatalytic properties at different annealed temperatures. The results of the structural analysis show the anatase phase of TiO 2 at 400°C, the mixed phase at 700°C, and pure rutile phase at 800°C. The red-shift of absorption edges and band gap reduction are the two factors suggested by UV-Vis spectra, confirming the phase change of TiO 2 from anatase to rutile on annealing at 800°C. The PL emission results of annealed products exhibit enhanced visible emissions on annealing as a result of increased oxygen vacancies. The photocatalytic activities of the annealed products were analyzed against the organic dye brilliant green (BG). Among the all, TiO 2 annealed at 700°C shows an enhanced photocatalytic performance against the organic dye BG.

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“…Brookite crystals are always within crystalline TiO 2 NSs, and pure brookite crystalline structures can be generated using the hydrothermal strategy [31,32,57,85]. Annealing temperatures between 280 and 800 °C first create a polymorphic structure, and raising the annealing temperature toward 900 °C then increases rutile crystals within the polymorphic structure [74,86]. Note that the annealing process in a vacuum or gaseous atmosphere, including nitrogen, argon, and nitrogen/hydrogen, also generates different polymorphic structures [74].…”

Section: Crystalline Structurementioning

confidence: 99%

Insights into Theranostic Properties of Titanium Dioxide for Nanomedicine

Kafshgari

Goldmann

2020

Nano-Micro Lett.

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HIGHLIGHTS • Multifunctional TiO 2 nanostructures hold promise for advancing a wide range of biomedical applications due to a feasible integration of distinct theranostic features. • Fabrication and post-fabrication strategies implemented to generate multifunctional TiO 2 nanostructures for a broad range of biomedical applications are briefly outlined. The opportunities and challenges of TiO 2 nanomaterials are highlighted in order to open the possibility of clinical translation. ABSTRACT Titanium dioxide (TiO 2 ) nanostructures exhibit a broad range of theranostic properties that make them attractive for biomedical applications. TiO 2 nanostructures promise to improve current theranostic strategies by leveraging the enhanced quantum confinement, thermal conversion, specific surface area, and surface activity. This review highlights certain important aspects of fabrication strategies, which are employed to generate multifunctional TiO 2 nanostructures, while outlining post-fabrication techniques with anemphasis on their suitability for nanomedicine. The biodistribution, toxicity, biocompatibility, cellular adhesion, and endocytosis of these nanostructures, when exposed to biological microenvironments, are examined in regard to their geometry, size, and surface chemistry. The final section focuses on recent biomedical applications of TiO 2 nanostructures, specifically evaluating therapeutic delivery, photodynamic and sonodynamic therapy, bioimaging, biosensing, tissue regeneration, as well as chronic wound healing.

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Effect of annealing on TiO2 nanoparticles

Cited by 73 publications

References 38 publications

Synthesis and Charecterization Studies of Nano Tio2 Prepared via Sol-Gel Method

Synthesis and Charecterization Studies of Nano Tio2 Prepared via Sol-Gel Method

Influence of thermal annealing on the photo catalytic properties of TiO2 nanoparticles under solar irradiation

Insights into Theranostic Properties of Titanium Dioxide for Nanomedicine

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