A biphasic sol–gel route to synthesize anatase TiO2 particles under controlled conditions and their DSSC application

A biphasic sol–gel method was introduced to reduce a high hydrolysis rate of metal alkoxides and control a morphological evolution of metal oxides. Titanium tetraisopropoxide (TTIP) was dissolved in an organic solvent which was immiscible with water. The TTIP solution was then contacted with water o...

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Main Authors: Tohru Narabe, Manabu Hagiwara, Shinobu Fujihara
Format: Article
Language:English
Published: Taylor & Francis Group 2017-12-01
Series:Journal of Asian Ceramic Societies
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2187076417301689
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spelling doaj-ed56bd4020b048088531461583ebc9662021-05-02T10:45:18ZengTaylor & Francis GroupJournal of Asian Ceramic Societies2187-07642017-12-015442743510.1016/j.jascer.2017.09.005A biphasic sol–gel route to synthesize anatase TiO2 particles under controlled conditions and their DSSC applicationTohru NarabeManabu HagiwaraShinobu FujiharaA biphasic sol–gel method was introduced to reduce a high hydrolysis rate of metal alkoxides and control a morphological evolution of metal oxides. Titanium tetraisopropoxide (TTIP) was dissolved in an organic solvent which was immiscible with water. The TTIP solution was then contacted with water or pH-controlled aqueous solutions to promote the hydrolysis and the polycondensation reaction through the mass transfer across the organic/aqueous interface. Anatase TiO2 was formed in any conditions employed in the present work at reaction temperatures of 80 °C or below. The morphology of TiO2 particles obtained was largely dependent on the kind of organic solvents. It was basically the aggregation of nanoparticles to give submicrometer-sized secondary particles with or without a regular shape. Heptane was found to be suitable to obtain spherical TiO2 large particles, which were evaluated as a photoanode material in dye-sensitized solar cells. Actually the large TiO2 particles worked well as the light scattering layer when applying them to a double-layered phtoanode, which showed an energy conversion efficiency of 5.67% with a high short-circuit photocurrent density of 14.1 mA cm−2.http://www.sciencedirect.com/science/article/pii/S2187076417301689Sol–gel methodTitanium tetraisopropoxideTitanium dioxideDye-sensitized solar cells
collection DOAJ
language English
format Article
sources DOAJ
author Tohru Narabe
Manabu Hagiwara
Shinobu Fujihara
spellingShingle Tohru Narabe
Manabu Hagiwara
Shinobu Fujihara
A biphasic sol–gel route to synthesize anatase TiO2 particles under controlled conditions and their DSSC application
Journal of Asian Ceramic Societies
Sol–gel method
Titanium tetraisopropoxide
Titanium dioxide
Dye-sensitized solar cells
author_facet Tohru Narabe
Manabu Hagiwara
Shinobu Fujihara
author_sort Tohru Narabe
title A biphasic sol–gel route to synthesize anatase TiO2 particles under controlled conditions and their DSSC application
title_short A biphasic sol–gel route to synthesize anatase TiO2 particles under controlled conditions and their DSSC application
title_full A biphasic sol–gel route to synthesize anatase TiO2 particles under controlled conditions and their DSSC application
title_fullStr A biphasic sol–gel route to synthesize anatase TiO2 particles under controlled conditions and their DSSC application
title_full_unstemmed A biphasic sol–gel route to synthesize anatase TiO2 particles under controlled conditions and their DSSC application
title_sort biphasic sol–gel route to synthesize anatase tio2 particles under controlled conditions and their dssc application
publisher Taylor & Francis Group
series Journal of Asian Ceramic Societies
issn 2187-0764
publishDate 2017-12-01
description A biphasic sol–gel method was introduced to reduce a high hydrolysis rate of metal alkoxides and control a morphological evolution of metal oxides. Titanium tetraisopropoxide (TTIP) was dissolved in an organic solvent which was immiscible with water. The TTIP solution was then contacted with water or pH-controlled aqueous solutions to promote the hydrolysis and the polycondensation reaction through the mass transfer across the organic/aqueous interface. Anatase TiO2 was formed in any conditions employed in the present work at reaction temperatures of 80 °C or below. The morphology of TiO2 particles obtained was largely dependent on the kind of organic solvents. It was basically the aggregation of nanoparticles to give submicrometer-sized secondary particles with or without a regular shape. Heptane was found to be suitable to obtain spherical TiO2 large particles, which were evaluated as a photoanode material in dye-sensitized solar cells. Actually the large TiO2 particles worked well as the light scattering layer when applying them to a double-layered phtoanode, which showed an energy conversion efficiency of 5.67% with a high short-circuit photocurrent density of 14.1 mA cm−2.
topic Sol–gel method
Titanium tetraisopropoxide
Titanium dioxide
Dye-sensitized solar cells
url http://www.sciencedirect.com/science/article/pii/S2187076417301689
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