A facile sol–gel synthesis of impurity-free nanocrystalline titania

2014 ◽  
Vol 16 (22) ◽  
pp. 10614-10619 ◽  
Author(s):  
Alexandr V. Vinogradov ◽  
Al'ena V. Ermakova ◽  
Mikhail F. Butman ◽  
Evamarie Hey-Hawkins ◽  
Vladimir V. Vinogradov
Keyword(s):  
Low Temperature ◽  
Aqueous Medium ◽  
Sol Gel ◽  
Titanium Isopropoxide ◽  
Nanocrystalline Titania ◽  
Hydrolysis Products ◽  
Ultrasonic Assisted ◽  
Sol Gel Synthesis

A low-temperature ultrasonic-assisted method is used to prepare nanocrystalline TiO2 sol–gel materials from hydrolysis products of titanium isopropoxide in aqueous medium with no addition of modifying agents.

scholarly journals 1D TiO2 Nanostructures Prepared from Seeds Presenting Tailored TiO2 Crystalline Phases and Their Photocatalytic Activity for Escherichia coli in Water

2018 ◽  
Vol 2018 ◽  
pp. 1-6 ◽  
Author(s):  
Julieta Cabrera ◽  
Dwight Acosta ◽  
Alcides López ◽  
Roberto J. Candal ◽  
Claudia Marchi ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Photocatalytic Activity ◽  
Bactericidal Activity ◽  
Sol Gel ◽  
Titanium Isopropoxide ◽  
E Coli ◽  
1D Nanostructures ◽  
Sol Gel Synthesis ◽  
Hydrolysis Of ◽  
Tio2 Nanostructures

TiO2 nanotubes were synthesized by alkaline hydrothermal treatment of TiO2 nanoparticles with a controlled proportion of anatase and rutile. Tailoring of TiO2 phases was achieved by adjusting the pH and type of acid used in the hydrolysis of titanium isopropoxide (first step in the sol-gel synthesis). The anatase proportion in the precursor nanoparticles was in the 3–100% range. Tube-like nanostructures were obtained with an anatase percentage of 18 or higher while flake-like shapes were obtained when rutile was dominant in the seed. After annealing at 400°C for 2 h, a fraction of nanotubes was conserved in all the samples but, depending on the anatase/rutile ratio in the starting material, spherical and rod-shaped structures were also observed. The photocatalytic activity of 1D nanostructures was evaluated by measuring the deactivation of E. coli in stirred water in the dark and under UV-A/B irradiation. Results show that in addition to the bactericidal activity of TiO2 under UV-A illumination, under dark conditions, the decrease in bacteria viability is ascribed to mechanical stress due to stirring.

Modification of Solvolytic Sol-Gel Synthesis for Low Temperature TiO2 DSSC Photoelectrode

2014 ◽  
Vol 979 ◽  
pp. 39-42
Author(s):  
Saran Kalasina ◽  
Taweechai Amornsakchai ◽  
Udom Asawapirom
Keyword(s):  
Low Temperature ◽  
Tin Oxide ◽  
Hydrofluoric Acid ◽  
Sol Gel ◽  
Cell Efficiency ◽  
Dye Sensitized ◽  
Degussa P25 ◽  
Main Component ◽  
Sol Gel Synthesis ◽  
Dry Film

Solvolytic sol-gel synthesis was applied for the low temperature production of photoelectrode for dye-sensitized solar cell (DSSC). In this study, commercial TiO2 standard (Degussa P25) was used as the main component in the preparation of photoelectrode film. Addition of TiO2 gel prepared from a solvolytic sol-gel method reduced cracking in the dry film while still maintains porosity. Further modification by simply adding hydrofluoric acid (HF) and ammonia (NH3) increase porosity and improve interconnection between fluorine doped tin oxide (FTO) layer on the substrate and the coated TiO2 layer even under low temperature baking condition (<150°C). The modified TiO2 electrode showed significantly better electrical and electrochemical properties. Furthermore, the DSSC cell with modified TiO2 film also showed higher cell efficiency when compared with the controlled cell that used only Degussa P25.

Reinspection of formation of BiFe1-xMnxO3 solid solutions via low temperature sol-gel synthesis route

2021 ◽  
Vol 111 ◽  
pp. 106458
Author(s):  
Ramunas Diliautas ◽  
Aldona Beganskiene ◽  
Dovydas Karoblis ◽  
Kestutis Mazeika ◽  
Dalis Baltrunas ◽  
...  
Keyword(s):  
Low Temperature ◽  
Solid Solutions ◽  
Sol Gel ◽  
Synthesis Route ◽  
Sol Gel Synthesis

ChemInform Abstract: Low-Temperature Sol-Gel Synthesis of NaZr2P3O12.

ChemInform ◽  
1990 ◽  
Vol 21 (42) ◽  
Author(s):  
D. K. AGRAWAL ◽  
J. H. ADAIR
Keyword(s):  
Low Temperature ◽  
Sol Gel ◽  
Sol Gel Synthesis

scholarly journals Non-aqueous sol–gel synthesis through a low-temperature solvothermal process of anatase showing visible-light photocatalytic activity

RSC Advances ◽  
2014 ◽  
Vol 4 (87) ◽  
pp. 46762-46770 ◽  
Author(s):  
Mohamed Karmaoui ◽  
David M. Tobaldi ◽  
Andrijana Sever Skapin Andrijana Sever Skapin ◽  
Robert C. Pullar ◽  
Maria P. Seabra ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Low Temperature ◽  
Visible Light ◽  
Sol Gel ◽  
Solvothermal Process ◽  
One Pot ◽  
Visible Light Photocatalytic Activity ◽  
Sol Gel Synthesis ◽  
Visible Light Photocatalytic

A novel, facile method based on a non-aqueous sol–gel solvothermal process has been developed to synthesise spherical TiO2 nanoparticles (NPs) in one pot.

Low temperature crystallization of yttrium orthoferrite by organic acid-assisted sol–gel synthesis

2014 ◽  
Vol 114 ◽  
pp. 136-139 ◽  
Author(s):  
Frédéric Stevens ◽  
Rudi Cloots ◽  
Dirk Poelman ◽  
Bénédicte Vertruyen ◽  
Catherine Henrist
Keyword(s):  
Low Temperature ◽  
Organic Acid ◽  
Sol Gel ◽  
Yttrium Orthoferrite ◽  
Low Temperature Crystallization ◽  
Sol Gel Synthesis ◽  
Temperature Crystallization

Low-temperature sol-gel synthesis of modified nickel ferrite

2012 ◽  
Vol 57 (4) ◽  
pp. 474-477 ◽  
Author(s):  
I. V. Lisnevskaya ◽  
I. A. Bobrova ◽  
A. V. Petrova ◽  
T. G. Lupeiko
Keyword(s):  
Low Temperature ◽  
Nickel Ferrite ◽  
Sol Gel ◽  
Sol Gel Synthesis

Sol−Gel Synthesis of β-Al2TiO5Thin Films at Low Temperature

2000 ◽  
Vol 12 (2) ◽  
pp. 517-524 ◽  
Author(s):  
Plinio Innocenzi ◽  
Alessandro Martucci ◽  
Lidia Armelao ◽  
Silvia Licoccia ◽  
Maria Luisa Di Vona ◽  
...  
Keyword(s):  
Low Temperature ◽  
Sol Gel ◽  
Sol Gel Synthesis
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