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CdTiO(3)-NPs incorporated TiO(2) nanostructure photocatalyst for scavenger-free water splitting under visible radiation
Nanofibrous morphology and the doping technique can overcome the problem of electron/hole fast recombination and improve the activity of titanium oxide-based photocatalysts. In this study, nanoparticulate and nanofibrous forms of CdTiO(3)-incorporated TiO(2) were synthesized with different cadmium c...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Public Library of Science
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9578619/ https://www.ncbi.nlm.nih.gov/pubmed/36256606 http://dx.doi.org/10.1371/journal.pone.0276097 |
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author | Erfan, Nehal A. Mahmoud, Mohamed S. Kim, Hak Yong Barakat, Nasser A. M. |
author_facet | Erfan, Nehal A. Mahmoud, Mohamed S. Kim, Hak Yong Barakat, Nasser A. M. |
author_sort | Erfan, Nehal A. |
collection | PubMed |
description | Nanofibrous morphology and the doping technique can overcome the problem of electron/hole fast recombination and improve the activity of titanium oxide-based photocatalysts. In this study, nanoparticulate and nanofibrous forms of CdTiO(3)-incorporated TiO(2) were synthesized with different cadmium contents; the morphology and composition were determined by SEM, TEM, EDX, and XRD techniques. The nanomorphology, cadmium content, and reaction temperature of Cd-doped TiO(2) nanostructures were found to be strongly affect the hydrogen production rate. Nanofibrous morphology improves the rate of hydrogen evolution by around 10 folds over the rate for nanoparticles due to electron confinement in 0D nanostructures. The average rates of hydrogen production for samples of 0.5 wt.% Cd are 0.7 and 16.5 ml/g(cat.)min for nanoparticles and nanofibers, respectively. On the other hand, cadmium doping resulted in increasing the hydrogen production rate from 9.6 to 19.7 ml/g(cat).min for pristine and Cd-doped (2 wt%) TiO(2) nanofibers, respectively. May be the formation of type I heterostructures between the TiO(2) matrix and CdTiO(3) nanoparticles is the main reason for the observed enhancement of photocatalytic activity due to the strong suppressing of electron/holes recombination process. Consequently, the proposed photocatalyst could be exploited to produce hydrogen from scavenger-free solution. Varying reaction temperature suggests that hydrogen evolution over the proposed catalyst is incompatible with the Arrhenius equation. In particular, reaction temperature was found to have a negative influence on photocatalytic activity. This work shows the prospects for using CdTiO(3) as a co-catalyst in photon-induced water splitting and indicates a substantial enhancement in the rate of hydrogen production upon using the proposed photocatalyst in nanofibrous morphology. |
format | Online Article Text |
id | pubmed-9578619 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-95786192022-10-19 CdTiO(3)-NPs incorporated TiO(2) nanostructure photocatalyst for scavenger-free water splitting under visible radiation Erfan, Nehal A. Mahmoud, Mohamed S. Kim, Hak Yong Barakat, Nasser A. M. PLoS One Research Article Nanofibrous morphology and the doping technique can overcome the problem of electron/hole fast recombination and improve the activity of titanium oxide-based photocatalysts. In this study, nanoparticulate and nanofibrous forms of CdTiO(3)-incorporated TiO(2) were synthesized with different cadmium contents; the morphology and composition were determined by SEM, TEM, EDX, and XRD techniques. The nanomorphology, cadmium content, and reaction temperature of Cd-doped TiO(2) nanostructures were found to be strongly affect the hydrogen production rate. Nanofibrous morphology improves the rate of hydrogen evolution by around 10 folds over the rate for nanoparticles due to electron confinement in 0D nanostructures. The average rates of hydrogen production for samples of 0.5 wt.% Cd are 0.7 and 16.5 ml/g(cat.)min for nanoparticles and nanofibers, respectively. On the other hand, cadmium doping resulted in increasing the hydrogen production rate from 9.6 to 19.7 ml/g(cat).min for pristine and Cd-doped (2 wt%) TiO(2) nanofibers, respectively. May be the formation of type I heterostructures between the TiO(2) matrix and CdTiO(3) nanoparticles is the main reason for the observed enhancement of photocatalytic activity due to the strong suppressing of electron/holes recombination process. Consequently, the proposed photocatalyst could be exploited to produce hydrogen from scavenger-free solution. Varying reaction temperature suggests that hydrogen evolution over the proposed catalyst is incompatible with the Arrhenius equation. In particular, reaction temperature was found to have a negative influence on photocatalytic activity. This work shows the prospects for using CdTiO(3) as a co-catalyst in photon-induced water splitting and indicates a substantial enhancement in the rate of hydrogen production upon using the proposed photocatalyst in nanofibrous morphology. Public Library of Science 2022-10-18 /pmc/articles/PMC9578619/ /pubmed/36256606 http://dx.doi.org/10.1371/journal.pone.0276097 Text en © 2022 Erfan et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Article Erfan, Nehal A. Mahmoud, Mohamed S. Kim, Hak Yong Barakat, Nasser A. M. CdTiO(3)-NPs incorporated TiO(2) nanostructure photocatalyst for scavenger-free water splitting under visible radiation |
title | CdTiO(3)-NPs incorporated TiO(2) nanostructure photocatalyst for scavenger-free water splitting under visible radiation |
title_full | CdTiO(3)-NPs incorporated TiO(2) nanostructure photocatalyst for scavenger-free water splitting under visible radiation |
title_fullStr | CdTiO(3)-NPs incorporated TiO(2) nanostructure photocatalyst for scavenger-free water splitting under visible radiation |
title_full_unstemmed | CdTiO(3)-NPs incorporated TiO(2) nanostructure photocatalyst for scavenger-free water splitting under visible radiation |
title_short | CdTiO(3)-NPs incorporated TiO(2) nanostructure photocatalyst for scavenger-free water splitting under visible radiation |
title_sort | cdtio(3)-nps incorporated tio(2) nanostructure photocatalyst for scavenger-free water splitting under visible radiation |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9578619/ https://www.ncbi.nlm.nih.gov/pubmed/36256606 http://dx.doi.org/10.1371/journal.pone.0276097 |
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