Cargando…
Porosity-dependent photoelectrochemical activity of double-layered TiO(2) thin films deposited by spin-coating method
Photoelectrochemical (PEC) cells made of low-cost, chemically stable, and abundant materials are crucial for green hydrogen production. In this regard, the fabrication of porous films with high light trapping ability and a large contact area is crucial for the production of efficient PEC cells. In t...
Autores principales: | , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10667967/ https://www.ncbi.nlm.nih.gov/pubmed/38024986 http://dx.doi.org/10.1039/d3ra06914a |
_version_ | 1785149070924316672 |
---|---|
author | Rustembekkyzy, Kuralay Zholdasbekov, Amir Abduvalov, Alshyn Kaikanov, Marat Atabaev, Timur Sh. |
author_facet | Rustembekkyzy, Kuralay Zholdasbekov, Amir Abduvalov, Alshyn Kaikanov, Marat Atabaev, Timur Sh. |
author_sort | Rustembekkyzy, Kuralay |
collection | PubMed |
description | Photoelectrochemical (PEC) cells made of low-cost, chemically stable, and abundant materials are crucial for green hydrogen production. In this regard, the fabrication of porous films with high light trapping ability and a large contact area is crucial for the production of efficient PEC cells. In this report, anatase TiO(2) thin films with a porous double-layered structure were successfully prepared using a conventional spin-coating deposition method. Various amounts of polystyrene spheres were used as a pore-templating agent to control the porosity of the films. A range of characterization techniques, such as scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and photoluminescence were employed to assess the morphology, structural and optical properties of prepared TiO(2) films. PEC measurements revealed that prepared double-layered TiO(2) thin films exhibit porosity-dependent photocatalytic activity. For example, TiO(2) films with an optimized porous structure demonstrated an increase in photocurrent density by a factor of ∼2.23 (to 141.7 μA cm(−2)) and photoconversion efficiency improvement by a factor of ∼2.14 as compared to non-porous double-layered TiO(2) reference films. Absorbance and photoluminescence analysis confirmed that improved PEC activity can be attributed to increased light absorption by the porous structure and reduced charge carrier recombination. |
format | Online Article Text |
id | pubmed-10667967 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-106679672023-11-24 Porosity-dependent photoelectrochemical activity of double-layered TiO(2) thin films deposited by spin-coating method Rustembekkyzy, Kuralay Zholdasbekov, Amir Abduvalov, Alshyn Kaikanov, Marat Atabaev, Timur Sh. RSC Adv Chemistry Photoelectrochemical (PEC) cells made of low-cost, chemically stable, and abundant materials are crucial for green hydrogen production. In this regard, the fabrication of porous films with high light trapping ability and a large contact area is crucial for the production of efficient PEC cells. In this report, anatase TiO(2) thin films with a porous double-layered structure were successfully prepared using a conventional spin-coating deposition method. Various amounts of polystyrene spheres were used as a pore-templating agent to control the porosity of the films. A range of characterization techniques, such as scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, and photoluminescence were employed to assess the morphology, structural and optical properties of prepared TiO(2) films. PEC measurements revealed that prepared double-layered TiO(2) thin films exhibit porosity-dependent photocatalytic activity. For example, TiO(2) films with an optimized porous structure demonstrated an increase in photocurrent density by a factor of ∼2.23 (to 141.7 μA cm(−2)) and photoconversion efficiency improvement by a factor of ∼2.14 as compared to non-porous double-layered TiO(2) reference films. Absorbance and photoluminescence analysis confirmed that improved PEC activity can be attributed to increased light absorption by the porous structure and reduced charge carrier recombination. The Royal Society of Chemistry 2023-11-24 /pmc/articles/PMC10667967/ /pubmed/38024986 http://dx.doi.org/10.1039/d3ra06914a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Rustembekkyzy, Kuralay Zholdasbekov, Amir Abduvalov, Alshyn Kaikanov, Marat Atabaev, Timur Sh. Porosity-dependent photoelectrochemical activity of double-layered TiO(2) thin films deposited by spin-coating method |
title | Porosity-dependent photoelectrochemical activity of double-layered TiO(2) thin films deposited by spin-coating method |
title_full | Porosity-dependent photoelectrochemical activity of double-layered TiO(2) thin films deposited by spin-coating method |
title_fullStr | Porosity-dependent photoelectrochemical activity of double-layered TiO(2) thin films deposited by spin-coating method |
title_full_unstemmed | Porosity-dependent photoelectrochemical activity of double-layered TiO(2) thin films deposited by spin-coating method |
title_short | Porosity-dependent photoelectrochemical activity of double-layered TiO(2) thin films deposited by spin-coating method |
title_sort | porosity-dependent photoelectrochemical activity of double-layered tio(2) thin films deposited by spin-coating method |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10667967/ https://www.ncbi.nlm.nih.gov/pubmed/38024986 http://dx.doi.org/10.1039/d3ra06914a |
work_keys_str_mv | AT rustembekkyzykuralay porositydependentphotoelectrochemicalactivityofdoublelayeredtio2thinfilmsdepositedbyspincoatingmethod AT zholdasbekovamir porositydependentphotoelectrochemicalactivityofdoublelayeredtio2thinfilmsdepositedbyspincoatingmethod AT abduvalovalshyn porositydependentphotoelectrochemicalactivityofdoublelayeredtio2thinfilmsdepositedbyspincoatingmethod AT kaikanovmarat porositydependentphotoelectrochemicalactivityofdoublelayeredtio2thinfilmsdepositedbyspincoatingmethod AT atabaevtimursh porositydependentphotoelectrochemicalactivityofdoublelayeredtio2thinfilmsdepositedbyspincoatingmethod |