Effect of thermal treatment on solid-solid interface of hematite thin film synthesized by spin-coating deposition solution
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.tsf.2016.03.011 http://hdl.handle.net/11449/177884 |
Resumo: | This work describes hematite films prepared by a spin-coating deposition solution (SCDS) method that is a sol-gel method derived technique. Hematite films were prepared at two heat treatment temperatures (500 °C and 800 °C) and the influence of thermal treatment on the photoelectrochemical performance was studied. In addition, since the SCDS method allows an optimal control of stoichiometry and impurity incorporation, hematite films modified with Zn2 + and Sn4 + were also prepared. The 800 °C-treated hematite films had a higher wettability and roughness that enabled them to have a better photocatalytic response in comparison with that of 500 °C-treated hematite films. Moreover, modified hematite films demonstrated to have a performance slightly better than that of undoped hematite film as shown in linear sweep voltammetry and chronoamperometry results. Although an improvement in the performance of hematite films was achieved by annealing at higher temperatures and incorporating Zn2 + or Sn4 +, the general photocatalytic response of the films was poor. Two plausible hypotheses were discussed related to the (i) dopant segregation at grain boundary, and (ii) poor contact between the hematite and fluorine doped tin oxide layer (from the glass substrate), which was experimentally confirmed by a cross-sectional analysis conducted using scanning electron microscopy (SEM). In fact, additional experiments need to be done in order to improve the hematite deposition and make the SCDS a promise method for industrial application. |
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spelling |
Effect of thermal treatment on solid-solid interface of hematite thin film synthesized by spin-coating deposition solutionDopingIron oxideNanostructureThin filmThis work describes hematite films prepared by a spin-coating deposition solution (SCDS) method that is a sol-gel method derived technique. Hematite films were prepared at two heat treatment temperatures (500 °C and 800 °C) and the influence of thermal treatment on the photoelectrochemical performance was studied. In addition, since the SCDS method allows an optimal control of stoichiometry and impurity incorporation, hematite films modified with Zn2 + and Sn4 + were also prepared. The 800 °C-treated hematite films had a higher wettability and roughness that enabled them to have a better photocatalytic response in comparison with that of 500 °C-treated hematite films. Moreover, modified hematite films demonstrated to have a performance slightly better than that of undoped hematite film as shown in linear sweep voltammetry and chronoamperometry results. Although an improvement in the performance of hematite films was achieved by annealing at higher temperatures and incorporating Zn2 + or Sn4 +, the general photocatalytic response of the films was poor. Two plausible hypotheses were discussed related to the (i) dopant segregation at grain boundary, and (ii) poor contact between the hematite and fluorine doped tin oxide layer (from the glass substrate), which was experimentally confirmed by a cross-sectional analysis conducted using scanning electron microscopy (SEM). In fact, additional experiments need to be done in order to improve the hematite deposition and make the SCDS a promise method for industrial application.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Centro de Ciências Naturais e Humanas (CCNH) Universidade Federal Do ABC, Av. dos Estados N 5001, BanguFaculdade de Ciências e Tecnologia (FCT) UNESP Univ Estadual PaulistaFaculdade de Ciências e Tecnologia (FCT) UNESP Univ Estadual PaulistaCNPq: 473669/2012-9FAPESP: 2013/07296-2Universidade Federal do ABC (UFABC)Universidade Estadual Paulista (Unesp)Bellido-Aguilar, Daniel AngelTofanello, AryaneSouza, Flavio L.Furini, Leonardo Negri [UNESP]Constantino, Carlos José Leopoldo [UNESP]2018-12-11T17:27:33Z2018-12-11T17:27:33Z2016-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article28-39application/pdfhttp://dx.doi.org/10.1016/j.tsf.2016.03.011Thin Solid Films, v. 604, p. 28-39.0040-6090http://hdl.handle.net/11449/17788410.1016/j.tsf.2016.03.0112-s2.0-849611976482-s2.0-84961197648.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengThin Solid Films0,617info:eu-repo/semantics/openAccess2023-10-30T06:12:55Zoai:repositorio.unesp.br:11449/177884Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-30T06:12:55Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Effect of thermal treatment on solid-solid interface of hematite thin film synthesized by spin-coating deposition solution |
title |
Effect of thermal treatment on solid-solid interface of hematite thin film synthesized by spin-coating deposition solution |
spellingShingle |
Effect of thermal treatment on solid-solid interface of hematite thin film synthesized by spin-coating deposition solution Bellido-Aguilar, Daniel Angel Doping Iron oxide Nanostructure Thin film |
title_short |
Effect of thermal treatment on solid-solid interface of hematite thin film synthesized by spin-coating deposition solution |
title_full |
Effect of thermal treatment on solid-solid interface of hematite thin film synthesized by spin-coating deposition solution |
title_fullStr |
Effect of thermal treatment on solid-solid interface of hematite thin film synthesized by spin-coating deposition solution |
title_full_unstemmed |
Effect of thermal treatment on solid-solid interface of hematite thin film synthesized by spin-coating deposition solution |
title_sort |
Effect of thermal treatment on solid-solid interface of hematite thin film synthesized by spin-coating deposition solution |
author |
Bellido-Aguilar, Daniel Angel |
author_facet |
Bellido-Aguilar, Daniel Angel Tofanello, Aryane Souza, Flavio L. Furini, Leonardo Negri [UNESP] Constantino, Carlos José Leopoldo [UNESP] |
author_role |
author |
author2 |
Tofanello, Aryane Souza, Flavio L. Furini, Leonardo Negri [UNESP] Constantino, Carlos José Leopoldo [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Federal do ABC (UFABC) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Bellido-Aguilar, Daniel Angel Tofanello, Aryane Souza, Flavio L. Furini, Leonardo Negri [UNESP] Constantino, Carlos José Leopoldo [UNESP] |
dc.subject.por.fl_str_mv |
Doping Iron oxide Nanostructure Thin film |
topic |
Doping Iron oxide Nanostructure Thin film |
description |
This work describes hematite films prepared by a spin-coating deposition solution (SCDS) method that is a sol-gel method derived technique. Hematite films were prepared at two heat treatment temperatures (500 °C and 800 °C) and the influence of thermal treatment on the photoelectrochemical performance was studied. In addition, since the SCDS method allows an optimal control of stoichiometry and impurity incorporation, hematite films modified with Zn2 + and Sn4 + were also prepared. The 800 °C-treated hematite films had a higher wettability and roughness that enabled them to have a better photocatalytic response in comparison with that of 500 °C-treated hematite films. Moreover, modified hematite films demonstrated to have a performance slightly better than that of undoped hematite film as shown in linear sweep voltammetry and chronoamperometry results. Although an improvement in the performance of hematite films was achieved by annealing at higher temperatures and incorporating Zn2 + or Sn4 +, the general photocatalytic response of the films was poor. Two plausible hypotheses were discussed related to the (i) dopant segregation at grain boundary, and (ii) poor contact between the hematite and fluorine doped tin oxide layer (from the glass substrate), which was experimentally confirmed by a cross-sectional analysis conducted using scanning electron microscopy (SEM). In fact, additional experiments need to be done in order to improve the hematite deposition and make the SCDS a promise method for industrial application. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-04-01 2018-12-11T17:27:33Z 2018-12-11T17:27:33Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.tsf.2016.03.011 Thin Solid Films, v. 604, p. 28-39. 0040-6090 http://hdl.handle.net/11449/177884 10.1016/j.tsf.2016.03.011 2-s2.0-84961197648 2-s2.0-84961197648.pdf |
url |
http://dx.doi.org/10.1016/j.tsf.2016.03.011 http://hdl.handle.net/11449/177884 |
identifier_str_mv |
Thin Solid Films, v. 604, p. 28-39. 0040-6090 10.1016/j.tsf.2016.03.011 2-s2.0-84961197648 2-s2.0-84961197648.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Thin Solid Films 0,617 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
28-39 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1792961694055530496 |