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Synthesis of SrTiO(3) submicron cubes with simultaneous and competitive photocatalytic activity for H(2)O splitting and CO(2) reduction

Single crystalline strontium titanate (SrTiO(3)) submicron cubes have been synthesized based on a molten salt method. The submicron cubes showed superior photocatalytic activity towards both water splitting and carbon dioxide reduction, in which methane (CH(4)) and hydrogen (H(2)) were simultaneousl...

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Autores principales: Wei, Haoshan, Cai, Jingyi, Zhang, Yong, Zhang, Xueru, Baranova, Elena A., Cui, Jiewu, Wang, Yan, Shu, Xia, Qin, Yongqiang, Liu, Jiaqin, Wu, Yucheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9057969/
https://www.ncbi.nlm.nih.gov/pubmed/35514889
http://dx.doi.org/10.1039/d0ra08246e
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author Wei, Haoshan
Cai, Jingyi
Zhang, Yong
Zhang, Xueru
Baranova, Elena A.
Cui, Jiewu
Wang, Yan
Shu, Xia
Qin, Yongqiang
Liu, Jiaqin
Wu, Yucheng
author_facet Wei, Haoshan
Cai, Jingyi
Zhang, Yong
Zhang, Xueru
Baranova, Elena A.
Cui, Jiewu
Wang, Yan
Shu, Xia
Qin, Yongqiang
Liu, Jiaqin
Wu, Yucheng
author_sort Wei, Haoshan
collection PubMed
description Single crystalline strontium titanate (SrTiO(3)) submicron cubes have been synthesized based on a molten salt method. The submicron cubes showed superior photocatalytic activity towards both water splitting and carbon dioxide reduction, in which methane (CH(4)) and hydrogen (H(2)) were simultaneously produced. The average production rate of methane up to 8 h is 4.39 μmol g(−1) h(−1) but drops to 0.46 μmol g(−1) h(−1). However, the average production rate of hydrogen is 14.52 before 8 h but then increases to 120.23 μmol g(−1) h(−1) after 8 h. The rate change of the two processes confirms the competition between the H(2)O splitting and CO(2) reduction reactions. Band structure and surface characteristics of the SrTiO(3) submicron cubes were characterized by diffuse reflective UV-Vis spectroscopy, Mott–Schottky analysis, X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). The results reveal that the simultaneous and competitive production of methane and hydrogen is due to a thermodynamics factor, as well as the competition between the adsorption of carbon dioxide and water molecules on the surface of the faceted SrTiO(3). This work demonstrates that SrTiO(3) photocatalysts are efficient in producing sustainable fuels via water splitting and carbon dioxide reduction reactions.
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spelling pubmed-90579692022-05-04 Synthesis of SrTiO(3) submicron cubes with simultaneous and competitive photocatalytic activity for H(2)O splitting and CO(2) reduction Wei, Haoshan Cai, Jingyi Zhang, Yong Zhang, Xueru Baranova, Elena A. Cui, Jiewu Wang, Yan Shu, Xia Qin, Yongqiang Liu, Jiaqin Wu, Yucheng RSC Adv Chemistry Single crystalline strontium titanate (SrTiO(3)) submicron cubes have been synthesized based on a molten salt method. The submicron cubes showed superior photocatalytic activity towards both water splitting and carbon dioxide reduction, in which methane (CH(4)) and hydrogen (H(2)) were simultaneously produced. The average production rate of methane up to 8 h is 4.39 μmol g(−1) h(−1) but drops to 0.46 μmol g(−1) h(−1). However, the average production rate of hydrogen is 14.52 before 8 h but then increases to 120.23 μmol g(−1) h(−1) after 8 h. The rate change of the two processes confirms the competition between the H(2)O splitting and CO(2) reduction reactions. Band structure and surface characteristics of the SrTiO(3) submicron cubes were characterized by diffuse reflective UV-Vis spectroscopy, Mott–Schottky analysis, X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR). The results reveal that the simultaneous and competitive production of methane and hydrogen is due to a thermodynamics factor, as well as the competition between the adsorption of carbon dioxide and water molecules on the surface of the faceted SrTiO(3). This work demonstrates that SrTiO(3) photocatalysts are efficient in producing sustainable fuels via water splitting and carbon dioxide reduction reactions. The Royal Society of Chemistry 2020-11-24 /pmc/articles/PMC9057969/ /pubmed/35514889 http://dx.doi.org/10.1039/d0ra08246e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Wei, Haoshan
Cai, Jingyi
Zhang, Yong
Zhang, Xueru
Baranova, Elena A.
Cui, Jiewu
Wang, Yan
Shu, Xia
Qin, Yongqiang
Liu, Jiaqin
Wu, Yucheng
Synthesis of SrTiO(3) submicron cubes with simultaneous and competitive photocatalytic activity for H(2)O splitting and CO(2) reduction
title Synthesis of SrTiO(3) submicron cubes with simultaneous and competitive photocatalytic activity for H(2)O splitting and CO(2) reduction
title_full Synthesis of SrTiO(3) submicron cubes with simultaneous and competitive photocatalytic activity for H(2)O splitting and CO(2) reduction
title_fullStr Synthesis of SrTiO(3) submicron cubes with simultaneous and competitive photocatalytic activity for H(2)O splitting and CO(2) reduction
title_full_unstemmed Synthesis of SrTiO(3) submicron cubes with simultaneous and competitive photocatalytic activity for H(2)O splitting and CO(2) reduction
title_short Synthesis of SrTiO(3) submicron cubes with simultaneous and competitive photocatalytic activity for H(2)O splitting and CO(2) reduction
title_sort synthesis of srtio(3) submicron cubes with simultaneous and competitive photocatalytic activity for h(2)o splitting and co(2) reduction
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9057969/
https://www.ncbi.nlm.nih.gov/pubmed/35514889
http://dx.doi.org/10.1039/d0ra08246e
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