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...
Main Authors: | , , |
---|---|
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 |
id |
doaj-ed56bd4020b048088531461583ebc966 |
---|---|
record_format |
Article |
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 |
work_keys_str_mv |
AT tohrunarabe abiphasicsolgelroutetosynthesizeanatasetio2particlesundercontrolledconditionsandtheirdsscapplication AT manabuhagiwara abiphasicsolgelroutetosynthesizeanatasetio2particlesundercontrolledconditionsandtheirdsscapplication AT shinobufujihara abiphasicsolgelroutetosynthesizeanatasetio2particlesundercontrolledconditionsandtheirdsscapplication AT tohrunarabe biphasicsolgelroutetosynthesizeanatasetio2particlesundercontrolledconditionsandtheirdsscapplication AT manabuhagiwara biphasicsolgelroutetosynthesizeanatasetio2particlesundercontrolledconditionsandtheirdsscapplication AT shinobufujihara biphasicsolgelroutetosynthesizeanatasetio2particlesundercontrolledconditionsandtheirdsscapplication |
_version_ |
1721492875279073280 |