Structural and optical properties of pure and copper doped zinc oxide nanoparticles
Pure and copper-doped zinc oxide nanoparticles (NPs) have been synthesized via chemical co-precipitation method where hydrazine is used as reducing agent and aqueous extract of Euphorbia milii plant as capping agent. Main objectives of the reported work are to investigate the effect of copper doping...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-06-01
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| Series: | Results in Physics |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379718303127 |
| _version_ | 1818292050927288320 |
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| author | Muhammad Sajjad Inam Ullah M.I. Khan Jamshid Khan M. Yaqoob Khan Muhammad Tauseef Qureshi |
| author_facet | Muhammad Sajjad Inam Ullah M.I. Khan Jamshid Khan M. Yaqoob Khan Muhammad Tauseef Qureshi |
| author_sort | Muhammad Sajjad |
| collection | DOAJ |
| description | Pure and copper-doped zinc oxide nanoparticles (NPs) have been synthesized via chemical co-precipitation method where hydrazine is used as reducing agent and aqueous extract of Euphorbia milii plant as capping agent. Main objectives of the reported work are to investigate the effect of copper doping on crystal structure of ZnO nanoparticles; to study the effect of copper doping on optical band gap of ZnO nanoparticles and photoluminescence (PL) study of pure and copper-doped ZnO nanoparticles. To achieve the aforementioned objectives, XRD and SEM tests were performed for the identification and confirmation of crystal structure and morphology of the prepared samples. From XRD data the average grain size for pure ZnO was observed to be 24.62 nm which was first decreased to 18.95 nm for 5 wt% Cu-doped sample and then it was found to increase up to 37.80 nm as the Cu doping was increased to 7 wt%. Optical band gap of pure and Cu-doped ZnO nanoparticles was calculated from diffuse reflectance spectroscopy (DRS) spectra and was found to decrease from 3.13 eV to 2.94 eV as the amount of Cu increases up to 7 wt%. In photoluminescence study, PL technique was used and enhanced visible spectrum was observed. For further characterization FT-IR and EDX tests were also carried out. Keywords: Copper-doped ZnO nanoparticles, Co-precipitation method, Band gap studies and photoluminescence |
| first_indexed | 2024-12-13T02:53:48Z |
| format | Article |
| id | doaj.art-6f7ead89982c41039529fe410b53fb81 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-12-13T02:53:48Z |
| publishDate | 2018-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-6f7ead89982c41039529fe410b53fb812022-12-22T00:02:00ZengElsevierResults in Physics2211-37972018-06-01913011309Structural and optical properties of pure and copper doped zinc oxide nanoparticlesMuhammad Sajjad0Inam Ullah1M.I. Khan2Jamshid Khan3M. Yaqoob Khan4Muhammad Tauseef Qureshi5Department of Physics, Kohat University of Science and Technology, Kohat 26000, Khyber Pakhtunkhwa, Pakistan; Corresponding author.Department of Physics, Kohat University of Science and Technology, Kohat 26000, Khyber Pakhtunkhwa, PakistanDepartment of Chemistry, Kohat University of Science and Technology, Kohat 26000, Khyber Pakhtunkhwa, PakistanDepartment of Chemistry, Hazara University, Mansehra 21300, Khyber Pakhtunkhwa, PakistanDepartment of Physics, Kohat University of Science and Technology, Kohat 26000, Khyber Pakhtunkhwa, PakistanDepartment of Physics, Hazara University, Mansehra 21300, Khyber Pakhtunkhwa, PakistanPure and copper-doped zinc oxide nanoparticles (NPs) have been synthesized via chemical co-precipitation method where hydrazine is used as reducing agent and aqueous extract of Euphorbia milii plant as capping agent. Main objectives of the reported work are to investigate the effect of copper doping on crystal structure of ZnO nanoparticles; to study the effect of copper doping on optical band gap of ZnO nanoparticles and photoluminescence (PL) study of pure and copper-doped ZnO nanoparticles. To achieve the aforementioned objectives, XRD and SEM tests were performed for the identification and confirmation of crystal structure and morphology of the prepared samples. From XRD data the average grain size for pure ZnO was observed to be 24.62 nm which was first decreased to 18.95 nm for 5 wt% Cu-doped sample and then it was found to increase up to 37.80 nm as the Cu doping was increased to 7 wt%. Optical band gap of pure and Cu-doped ZnO nanoparticles was calculated from diffuse reflectance spectroscopy (DRS) spectra and was found to decrease from 3.13 eV to 2.94 eV as the amount of Cu increases up to 7 wt%. In photoluminescence study, PL technique was used and enhanced visible spectrum was observed. For further characterization FT-IR and EDX tests were also carried out. Keywords: Copper-doped ZnO nanoparticles, Co-precipitation method, Band gap studies and photoluminescencehttp://www.sciencedirect.com/science/article/pii/S2211379718303127 |
| spellingShingle | Muhammad Sajjad Inam Ullah M.I. Khan Jamshid Khan M. Yaqoob Khan Muhammad Tauseef Qureshi Structural and optical properties of pure and copper doped zinc oxide nanoparticles Results in Physics |
| title | Structural and optical properties of pure and copper doped zinc oxide nanoparticles |
| title_full | Structural and optical properties of pure and copper doped zinc oxide nanoparticles |
| title_fullStr | Structural and optical properties of pure and copper doped zinc oxide nanoparticles |
| title_full_unstemmed | Structural and optical properties of pure and copper doped zinc oxide nanoparticles |
| title_short | Structural and optical properties of pure and copper doped zinc oxide nanoparticles |
| title_sort | structural and optical properties of pure and copper doped zinc oxide nanoparticles |
| url | http://www.sciencedirect.com/science/article/pii/S2211379718303127 |
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