Cargando…
Enhancing the physical properties and photocatalytic activity of TiO(2) nanoparticles via cobalt doping
Cobalt-doped TiO(2)-based diluted magnetic semiconductors were successfully synthesized using a co-precipitation method. The X-ray diffraction study of all the samples showed good crystallinity, matching the standard tetragonal anatase phase. The X-ray diffraction peaks of the cobalt-doped sample sl...
Autores principales: | , , , , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9132072/ https://www.ncbi.nlm.nih.gov/pubmed/35685706 http://dx.doi.org/10.1039/d2ra01948e |
_version_ | 1784713304718966784 |
---|---|
author | Safeen, Akif Safeen, Kashif Ullah, Rehan Zulfqar, Shah, Wiqar H. Zaman, Quaid Althubeiti, Khaled Al Otaibi, Sattam Rahman, Nasir Iqbal, Shahid Khan, Alamzeb Khan, Aurangzeb Khan, Rajwali |
author_facet | Safeen, Akif Safeen, Kashif Ullah, Rehan Zulfqar, Shah, Wiqar H. Zaman, Quaid Althubeiti, Khaled Al Otaibi, Sattam Rahman, Nasir Iqbal, Shahid Khan, Alamzeb Khan, Aurangzeb Khan, Rajwali |
author_sort | Safeen, Akif |
collection | PubMed |
description | Cobalt-doped TiO(2)-based diluted magnetic semiconductors were successfully synthesized using a co-precipitation method. The X-ray diffraction study of all the samples showed good crystallinity, matching the standard tetragonal anatase phase. The X-ray diffraction peaks of the cobalt-doped sample slightly shifted towards a lower angle showing the decrease in particle size and distortion in the unit cell due to cobalt incorporation in the lattice of TiO(2). Transmission electron microscopy showed the spherical morphology of the TiO(2) nanoparticles, which decreased with Co-doping. The optical characteristics and band gap investigation revealed that defects and oxygen vacancies resulted in lower band gap energy and maximum absorption in the visible region. Dielectric measurements showed enhancement in the dielectric constant and AC conductivity, while the dielectric loss decreased. The enhancement in the dielectric properties was attributed to interfacial polarization and charge carrier hopping between Co and Ti ions. The magnetic properties displayed that pure TiO(2) was diamagnetic, while Co-doped TiO(2) showed a ferromagnetic response at 300 K. The visible light-driven photocatalytic activity showed an improvement for Co-doped TiO(2). Our results demonstrate that Co-doping can be used to tune the physical properties and photocatalytic activity of TiO(2) for possible spin-based electronics, optoelectronics, and photo-degradation applications. |
format | Online Article Text |
id | pubmed-9132072 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-91320722022-06-08 Enhancing the physical properties and photocatalytic activity of TiO(2) nanoparticles via cobalt doping Safeen, Akif Safeen, Kashif Ullah, Rehan Zulfqar, Shah, Wiqar H. Zaman, Quaid Althubeiti, Khaled Al Otaibi, Sattam Rahman, Nasir Iqbal, Shahid Khan, Alamzeb Khan, Aurangzeb Khan, Rajwali RSC Adv Chemistry Cobalt-doped TiO(2)-based diluted magnetic semiconductors were successfully synthesized using a co-precipitation method. The X-ray diffraction study of all the samples showed good crystallinity, matching the standard tetragonal anatase phase. The X-ray diffraction peaks of the cobalt-doped sample slightly shifted towards a lower angle showing the decrease in particle size and distortion in the unit cell due to cobalt incorporation in the lattice of TiO(2). Transmission electron microscopy showed the spherical morphology of the TiO(2) nanoparticles, which decreased with Co-doping. The optical characteristics and band gap investigation revealed that defects and oxygen vacancies resulted in lower band gap energy and maximum absorption in the visible region. Dielectric measurements showed enhancement in the dielectric constant and AC conductivity, while the dielectric loss decreased. The enhancement in the dielectric properties was attributed to interfacial polarization and charge carrier hopping between Co and Ti ions. The magnetic properties displayed that pure TiO(2) was diamagnetic, while Co-doped TiO(2) showed a ferromagnetic response at 300 K. The visible light-driven photocatalytic activity showed an improvement for Co-doped TiO(2). Our results demonstrate that Co-doping can be used to tune the physical properties and photocatalytic activity of TiO(2) for possible spin-based electronics, optoelectronics, and photo-degradation applications. The Royal Society of Chemistry 2022-05-25 /pmc/articles/PMC9132072/ /pubmed/35685706 http://dx.doi.org/10.1039/d2ra01948e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Safeen, Akif Safeen, Kashif Ullah, Rehan Zulfqar, Shah, Wiqar H. Zaman, Quaid Althubeiti, Khaled Al Otaibi, Sattam Rahman, Nasir Iqbal, Shahid Khan, Alamzeb Khan, Aurangzeb Khan, Rajwali Enhancing the physical properties and photocatalytic activity of TiO(2) nanoparticles via cobalt doping |
title | Enhancing the physical properties and photocatalytic activity of TiO(2) nanoparticles via cobalt doping |
title_full | Enhancing the physical properties and photocatalytic activity of TiO(2) nanoparticles via cobalt doping |
title_fullStr | Enhancing the physical properties and photocatalytic activity of TiO(2) nanoparticles via cobalt doping |
title_full_unstemmed | Enhancing the physical properties and photocatalytic activity of TiO(2) nanoparticles via cobalt doping |
title_short | Enhancing the physical properties and photocatalytic activity of TiO(2) nanoparticles via cobalt doping |
title_sort | enhancing the physical properties and photocatalytic activity of tio(2) nanoparticles via cobalt doping |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9132072/ https://www.ncbi.nlm.nih.gov/pubmed/35685706 http://dx.doi.org/10.1039/d2ra01948e |
work_keys_str_mv | AT safeenakif enhancingthephysicalpropertiesandphotocatalyticactivityoftio2nanoparticlesviacobaltdoping AT safeenkashif enhancingthephysicalpropertiesandphotocatalyticactivityoftio2nanoparticlesviacobaltdoping AT ullahrehan enhancingthephysicalpropertiesandphotocatalyticactivityoftio2nanoparticlesviacobaltdoping AT zulfqar enhancingthephysicalpropertiesandphotocatalyticactivityoftio2nanoparticlesviacobaltdoping AT shahwiqarh enhancingthephysicalpropertiesandphotocatalyticactivityoftio2nanoparticlesviacobaltdoping AT zamanquaid enhancingthephysicalpropertiesandphotocatalyticactivityoftio2nanoparticlesviacobaltdoping AT althubeitikhaled enhancingthephysicalpropertiesandphotocatalyticactivityoftio2nanoparticlesviacobaltdoping AT alotaibisattam enhancingthephysicalpropertiesandphotocatalyticactivityoftio2nanoparticlesviacobaltdoping AT rahmannasir enhancingthephysicalpropertiesandphotocatalyticactivityoftio2nanoparticlesviacobaltdoping AT iqbalshahid enhancingthephysicalpropertiesandphotocatalyticactivityoftio2nanoparticlesviacobaltdoping AT khanalamzeb enhancingthephysicalpropertiesandphotocatalyticactivityoftio2nanoparticlesviacobaltdoping AT khanaurangzeb enhancingthephysicalpropertiesandphotocatalyticactivityoftio2nanoparticlesviacobaltdoping AT khanrajwali enhancingthephysicalpropertiesandphotocatalyticactivityoftio2nanoparticlesviacobaltdoping |