Low-Temperature Fabrication of Mesoporous Titania Thin Films

MRS Advances ◽  
2017 ◽  
Vol 2 (43) ◽  
pp. 2315-2325 ◽  
Author(s):  
Lin Song ◽  
Volker Körstgens ◽  
David Magerl ◽  
Bo Su ◽  
Thomas Fröschl ◽  
...  
Keyword(s):  
Low Temperature ◽  
Uv Irradiation ◽  
Sol Gel ◽  
Composite Films ◽  
Grazing Incidence ◽  
Mesoporous Titania ◽  
Vis Spectroscopy ◽  
Titania Films ◽  
Polymer Template ◽  
Sol Gel Synthesis

ABSTRACTMesoporous titania films are prepared via the polymer-template assisted sol-gel synthesis at low temperatures, using the titania precursor ethylene glycol-modified titanate (EGMT) and the diblock copolymer polystyrene-block-polyethyleneoxide (PS-b-PEO). UV-irradiation is chosen as a low temperature technique to remove the polymer template and thereby to obtain titania sponge-like nanostructures at processing temperatures below 100 °C. After different UV irradiation times, ranging for 0 h to 24 h, the surface and inner morphologies of the titania films are studied with scanning electron microscopy (SEM) and grazing incidence small-angle x-ray scattering (GISAXS), respectively. The evolution of the band gap energies is investigated using ultraviolet/visible (UV/Vis) spectroscopy. The findings reveal that 12 h UV-treatment is sufficient to remove the polymer template from the titania/PS-b-PEO composite films with a thickness of 80 nm, and the determined bad gap energies indicate an incomplete crystallization of the titania nanostructures.

scholarly journals Nano-sized blue spectral shift in sol–gel derived mesoporous titania films

2011 ◽  
Vol 61 (2) ◽  
pp. 355-361 ◽  
Author(s):  
P. Karasiński ◽  
E. Gondek ◽  
S. Drewniak ◽  
I. V. Kityk
Keyword(s):  
Sol Gel ◽  
Spectral Shift ◽  
Mesoporous Titania ◽  
Titania Films

scholarly journals Choline chloride–zinc chloride ionic liquid as a green template for the sol–gel synthesis of mesoporous titania

RSC Advances ◽  
2017 ◽  
Vol 7 (17) ◽  
pp. 10081-10091 ◽  
Author(s):  
T. Preethi ◽  
M. P. Padmapriya ◽  
B. Abarna ◽  
G. R. Rajarajeswari
Keyword(s):  
Ionic Liquid ◽  
Zinc Chloride ◽  
Choline Chloride ◽  
Sol Gel ◽  
Mesoporous Titania ◽  
Anatase Titania ◽  
Sol Gel Synthesis

Choline chloride–zinc chloride ionic liquid has been used as a green template to synthesis highly crystalline mesoporou anatase titania.

Sol-gel synthesis and characterization of Ag nanoparticles in ZrO2 thin films

2009 ◽  
Vol 24 (8) ◽  
pp. 2541-2546 ◽  
Author(s):  
Eisuke Yokoyama ◽  
Hironobu Sakata ◽  
Moriaki Wakaki
Keyword(s):  
Thin Films ◽  
Sol Gel ◽  
Composite Films ◽  
Dip Coating ◽  
Molar Ratio ◽  
X Ray Diffraction ◽  
Silver Surface ◽  
Molar Ratios ◽  
Sol Gel Synthesis

ZrO2 thin films containing silver nanoparticles were prepared using the sol-gel method with Ag to Zr molar ratios [Ag]/[Zr] = 0.11, 0.25, 0.43, 0.67, 1.00, 1.50, and 2.33. After dip coating on glass substrate, coated films were annealed at 200 and 300 °C in air. X-ray diffraction peaks corresponding to crystalline Ag were observed, but a specific peak corresponding to ZrO2 was not observed. At the molar ratio [Ag]/[Zr] = 0.25, the particle size of Ag distributed broadly centered at 17 nm for an annealing temperature of 200 °C and at 25 nm for 300 °C. The films annealed in air at 200 °C showed an absorption band centered at 450 nm because of the silver surface plasmon resonance, whereas films heated at 300 °C in air caused a red shift of the absorption to 500 nm. The absorption peak was analyzed using the effective dielectric function of Ag-ZrO2 composite films modeled with the Maxwell-Garnett expression.

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

Preparation of Nanoporous Titania Films by Surface Sol−Gel Process Accompanied by Low-Temperature Oxygen Plasma Treatment

Langmuir ◽  
2002 ◽  
Vol 18 (23) ◽  
pp. 9048-9053 ◽  
Author(s):  
Jianguo Huang ◽  
Izumi Ichinose ◽  
Toyoki Kunitake ◽  
Aiko Nakao
Keyword(s):  
Low Temperature ◽  
Plasma Treatment ◽  
Oxygen Plasma ◽  
Sol Gel ◽  
Oxygen Plasma Treatment ◽  
Sol Gel Process ◽  
Titania Films

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.

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