Synthesis and photocatalytic study of Zn0.90Co0.10O and Zn0.90Co0.05M0.05O (M = Ca, Ba, Cr, Pb) nanocrystals: structural, optical and electrical investigations
Novel Zn0.90Co0.10O and Zn0.90Co0.05M0.05O (M = Ca, Ba, Cr, Pb) nanocrystals were synthesized by co-precipitation method and studied its structural, optical and electrical properties along with their photocatalytic activity. The XRD confirmed that Ca, Ba, Cr, and Pb have been incorporated without mo...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2020-05-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785419315194 |
| _version_ | 1818777194196893696 |
|---|---|
| author | Sadaf Yasmeen Tauseef Munawar M. Asghar Muhammad Azhar Khan Altaf Hussain Faisal Iqbal |
| author_facet | Sadaf Yasmeen Tauseef Munawar M. Asghar Muhammad Azhar Khan Altaf Hussain Faisal Iqbal |
| author_sort | Sadaf Yasmeen |
| collection | DOAJ |
| description | Novel Zn0.90Co0.10O and Zn0.90Co0.05M0.05O (M = Ca, Ba, Cr, Pb) nanocrystals were synthesized by co-precipitation method and studied its structural, optical and electrical properties along with their photocatalytic activity. The XRD confirmed that Ca, Ba, Cr, and Pb have been incorporated without modifying ZnO hexagonal wurtzite structure. The microstructural parameters were calculated using Scherrer, W–H, and SSP methods. FTIR confirmed the existence of Zn–O vibrational modes. UV–vis spectra used to calculate the energy bandgap by using Tauc’s plot, Energy equation, Vegard’s law, and Derivative method. Optical parameters such as Urbach energy, refractive index, dielectric constant, extinction coefficient and optical conductivity were also studied. The IV measurements demonstrated that electrical conductivity was increased significantly by co-doping. The photocatalytic activity for the decolorization of methylene blue (MB) and methyl orange (MO) dyes under sunlight revealed the highest degradation efficiency for co-doped nanocrystals against MB as compared to MO in 100 min illumination. The grown nanocrystals are propitious sunlight driven photocatalyst to eradicate organic toxins. |
| first_indexed | 2024-12-18T11:24:57Z |
| format | Article |
| id | doaj.art-d1cd67c55bdb408fbee667c7af3fdfed |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-18T11:24:57Z |
| publishDate | 2020-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-d1cd67c55bdb408fbee667c7af3fdfed2022-12-21T21:09:43ZengElsevierJournal of Materials Research and Technology2238-78542020-05-019340764096Synthesis and photocatalytic study of Zn0.90Co0.10O and Zn0.90Co0.05M0.05O (M = Ca, Ba, Cr, Pb) nanocrystals: structural, optical and electrical investigationsSadaf Yasmeen0Tauseef Munawar1M. Asghar2Muhammad Azhar Khan3Altaf Hussain4Faisal Iqbal5Department of Physics, The Islamia University of Bahawalpur, Bahawalpur 63100, PakistanDepartment of Physics, The Islamia University of Bahawalpur, Bahawalpur 63100, PakistanDepartment of Physics, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan 64200, PakistanDepartment of Physics, The Islamia University of Bahawalpur, Bahawalpur 63100, PakistanDepartment of Physics, The Islamia University of Bahawalpur, Bahawalpur 63100, PakistanDepartment of Physics, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan; Corresponding author.Novel Zn0.90Co0.10O and Zn0.90Co0.05M0.05O (M = Ca, Ba, Cr, Pb) nanocrystals were synthesized by co-precipitation method and studied its structural, optical and electrical properties along with their photocatalytic activity. The XRD confirmed that Ca, Ba, Cr, and Pb have been incorporated without modifying ZnO hexagonal wurtzite structure. The microstructural parameters were calculated using Scherrer, W–H, and SSP methods. FTIR confirmed the existence of Zn–O vibrational modes. UV–vis spectra used to calculate the energy bandgap by using Tauc’s plot, Energy equation, Vegard’s law, and Derivative method. Optical parameters such as Urbach energy, refractive index, dielectric constant, extinction coefficient and optical conductivity were also studied. The IV measurements demonstrated that electrical conductivity was increased significantly by co-doping. The photocatalytic activity for the decolorization of methylene blue (MB) and methyl orange (MO) dyes under sunlight revealed the highest degradation efficiency for co-doped nanocrystals against MB as compared to MO in 100 min illumination. The grown nanocrystals are propitious sunlight driven photocatalyst to eradicate organic toxins.http://www.sciencedirect.com/science/article/pii/S2238785419315194NanocrystalsCo-doingXRDOptical parametersPhotocatalytic activity |
| spellingShingle | Sadaf Yasmeen Tauseef Munawar M. Asghar Muhammad Azhar Khan Altaf Hussain Faisal Iqbal Synthesis and photocatalytic study of Zn0.90Co0.10O and Zn0.90Co0.05M0.05O (M = Ca, Ba, Cr, Pb) nanocrystals: structural, optical and electrical investigations Journal of Materials Research and Technology Nanocrystals Co-doing XRD Optical parameters Photocatalytic activity |
| title | Synthesis and photocatalytic study of Zn0.90Co0.10O and Zn0.90Co0.05M0.05O (M = Ca, Ba, Cr, Pb) nanocrystals: structural, optical and electrical investigations |
| title_full | Synthesis and photocatalytic study of Zn0.90Co0.10O and Zn0.90Co0.05M0.05O (M = Ca, Ba, Cr, Pb) nanocrystals: structural, optical and electrical investigations |
| title_fullStr | Synthesis and photocatalytic study of Zn0.90Co0.10O and Zn0.90Co0.05M0.05O (M = Ca, Ba, Cr, Pb) nanocrystals: structural, optical and electrical investigations |
| title_full_unstemmed | Synthesis and photocatalytic study of Zn0.90Co0.10O and Zn0.90Co0.05M0.05O (M = Ca, Ba, Cr, Pb) nanocrystals: structural, optical and electrical investigations |
| title_short | Synthesis and photocatalytic study of Zn0.90Co0.10O and Zn0.90Co0.05M0.05O (M = Ca, Ba, Cr, Pb) nanocrystals: structural, optical and electrical investigations |
| title_sort | synthesis and photocatalytic study of zn0 90co0 10o and zn0 90co0 05m0 05o m ca ba cr pb nanocrystals structural optical and electrical investigations |
| topic | Nanocrystals Co-doing XRD Optical parameters Photocatalytic activity |
| url | http://www.sciencedirect.com/science/article/pii/S2238785419315194 |
| work_keys_str_mv | AT sadafyasmeen synthesisandphotocatalyticstudyofzn090co010oandzn090co005m005omcabacrpbnanocrystalsstructuralopticalandelectricalinvestigations AT tauseefmunawar synthesisandphotocatalyticstudyofzn090co010oandzn090co005m005omcabacrpbnanocrystalsstructuralopticalandelectricalinvestigations AT masghar synthesisandphotocatalyticstudyofzn090co010oandzn090co005m005omcabacrpbnanocrystalsstructuralopticalandelectricalinvestigations AT muhammadazharkhan synthesisandphotocatalyticstudyofzn090co010oandzn090co005m005omcabacrpbnanocrystalsstructuralopticalandelectricalinvestigations AT altafhussain synthesisandphotocatalyticstudyofzn090co010oandzn090co005m005omcabacrpbnanocrystalsstructuralopticalandelectricalinvestigations AT faisaliqbal synthesisandphotocatalyticstudyofzn090co010oandzn090co005m005omcabacrpbnanocrystalsstructuralopticalandelectricalinvestigations |