TiO2 microrods with stacked 3D nanovoids for photoelectrochemical water splitting
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F19%3A00508513" target="_blank" >RIV/61388980:_____/19:00508513 - isvavai.cz</a>
Alternative codes found
RIV/67985858:_____/19:00508513 RIV/61389013:_____/19:00508513 RIV/44555601:13420/19:43895091
Result on the web
<a href="http://hdl.handle.net/11104/0302580" target="_blank" >http://hdl.handle.net/11104/0302580</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1515/pac-2018-1116" target="_blank" >10.1515/pac-2018-1116</a>
Alternative languages
Result language
angličtina
Original language name
TiO2 microrods with stacked 3D nanovoids for photoelectrochemical water splitting
Original language description
This paper reports an original nonstandard green concept to obtain TiO2 microrods with polyhedral densely stacked 3D nanovoids prepared via the heat treatment of a hydrogen titanate. The intermediate hydrogen titanate was synthesized by a solid-liquid-solid (SLS) route from an ammonia-saturated aqueous solution of TiOSO4 at 0 °C. The effect of the postgrowth thermal annealing procedure to remove ice (water) and the proposed mechanism to explain the underlying transitions from the intermediate precursor to nanostructured TiO2 microrods with stacked 3D nanovoids were investigated. The small-angle X-ray scattering (SAXS) analysis indicates that at temperatures above 500 °C, the release of confined ice (water) takes place, which leads to the creation of self-assembled polyhedral nanovoids open to the surface. Their size ranges from 5 to 78 nm in both length and width, with a depth of ~3.88 nm. The first use of these stacked 1D TiO2 microrods as the working electrode in a photoelectrochemical (PEC) cell for water splitting is demonstrated. The estimated value of ζ-potential depends on both annealing temperature and crystallite size. Anatase sample 1D TiO/800 with ζ-potential (−29.1) mV and average crystallite size ~68 nm was observed to be highly stable in aqueous suspension. The SLS method yields low-cost 1D TiO2 materials possessing high photoreactivity with water. The PEC measurements indicate that three-dimensional hollow structures with a controlled geometry via patterned 1D TiO2 surface are promising materials for hydrogen generation from water splitting.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10402 - Inorganic and nuclear chemistry
Result continuities
Project
<a href="/en/project/GA18-15613S" target="_blank" >GA18-15613S: Integrating plasmonic metal nanoparticles with photonic TiO2 nanosheets for synergistically water splitting and environmental photocatalysis</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Pure and Applied Chemistry
ISSN
0033-4545
e-ISSN
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Volume of the periodical
91
Issue of the periodical within the volume
11
Country of publishing house
DE - GERMANY
Number of pages
15
Pages from-to
1733-1747
UT code for WoS article
000496795300004
EID of the result in the Scopus database
2-s2.0-85072557034