The physical and optical investigations of the tannic acid functionalised Cu-based oxide nanostructures
The need for a mild, low-cost, green environment that is able to produce exotic properties of output nanostructures is appealing nowadays. Employing these requirements, the copper (Cu)—based oxide nanostructures have been successfully synthesised via one-pot reaction using biocompatible natural poly...
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| Language: | English |
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Nature Publishing Group
2022
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| Online Access: | http://umpir.ump.edu.my/id/eprint/35010/ http://umpir.ump.edu.my/id/eprint/35010/2/The%20physical%20and%20optical.pdf |
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| author | Nurul Akmal, Che Lah Puhanes, Murthy Mohd Nashrul, Mohd Zubir |
| author_facet | Nurul Akmal, Che Lah Puhanes, Murthy Mohd Nashrul, Mohd Zubir |
| author_sort | Nurul Akmal, Che Lah |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | The need for a mild, low-cost, green environment that is able to produce exotic properties of output nanostructures is appealing nowadays. Employing these requirements, the copper (Cu)—based oxide nanostructures have been successfully synthesised via one-pot reaction using biocompatible natural polyphenol, tannic acid (TA) as both the reducing agent and stabiliser at 60, 70 and 80 °C. The structural and optical studies disclosed the efect of TA on the surface morphology, phase purity, elemental composition, optical microstrain and optical intrinsic energy of this mixed Cu2O and CuO nanostructures. The optically based method describes the comparative details of the multi-band gap in the presence of more than one element with overlapping spectra from the frstderivative absorbance curve and the exponential absorbance of Urbach tail energy EU towards the conventional Tauc bandgap. The A demonstrates that the pronounced efect of TA that Cu2O and CuO nanostructures creates much sensitive frst-derivative bandgap output compared to the Tauc bandgap. The results also show that the EU reduced as the temperature reaches 70 °C and then experienced sudden increase at 80 °C. The change in the pattern is parallel to the trend observed in the Williamson– Hall microstrain and is evident from the variations of the mean crystallite size Dm which is also a cause response to the change in temperature or pH. Therefore, the current work has elucidated that the structural and optical correlations on the as-synthesised Cu2O and CuO nanostructures in the presence of TA were the combined reaction of pH change and the ligand complexation reactions. The acquired results suggest a more comprehensive range of studies to further understand the extent relationship between the physical and optical properties of TA functionalised Cu-based oxide nanostructures. |
| first_indexed | 2025-11-15T03:16:37Z |
| format | Article |
| id | ump-35010 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T03:16:37Z |
| publishDate | 2022 |
| publisher | Nature Publishing Group |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-350102022-08-26T08:34:26Z http://umpir.ump.edu.my/id/eprint/35010/ The physical and optical investigations of the tannic acid functionalised Cu-based oxide nanostructures Nurul Akmal, Che Lah Puhanes, Murthy Mohd Nashrul, Mohd Zubir Q Science (General) TJ Mechanical engineering and machinery TS Manufactures The need for a mild, low-cost, green environment that is able to produce exotic properties of output nanostructures is appealing nowadays. Employing these requirements, the copper (Cu)—based oxide nanostructures have been successfully synthesised via one-pot reaction using biocompatible natural polyphenol, tannic acid (TA) as both the reducing agent and stabiliser at 60, 70 and 80 °C. The structural and optical studies disclosed the efect of TA on the surface morphology, phase purity, elemental composition, optical microstrain and optical intrinsic energy of this mixed Cu2O and CuO nanostructures. The optically based method describes the comparative details of the multi-band gap in the presence of more than one element with overlapping spectra from the frstderivative absorbance curve and the exponential absorbance of Urbach tail energy EU towards the conventional Tauc bandgap. The A demonstrates that the pronounced efect of TA that Cu2O and CuO nanostructures creates much sensitive frst-derivative bandgap output compared to the Tauc bandgap. The results also show that the EU reduced as the temperature reaches 70 °C and then experienced sudden increase at 80 °C. The change in the pattern is parallel to the trend observed in the Williamson– Hall microstrain and is evident from the variations of the mean crystallite size Dm which is also a cause response to the change in temperature or pH. Therefore, the current work has elucidated that the structural and optical correlations on the as-synthesised Cu2O and CuO nanostructures in the presence of TA were the combined reaction of pH change and the ligand complexation reactions. The acquired results suggest a more comprehensive range of studies to further understand the extent relationship between the physical and optical properties of TA functionalised Cu-based oxide nanostructures. Nature Publishing Group 2022 Article PeerReviewed pdf en cc_by_4 http://umpir.ump.edu.my/id/eprint/35010/2/The%20physical%20and%20optical.pdf Nurul Akmal, Che Lah and Puhanes, Murthy and Mohd Nashrul, Mohd Zubir (2022) The physical and optical investigations of the tannic acid functionalised Cu-based oxide nanostructures. Scientific Reports, 12 (9909). pp. 1-20. ISSN 2045-2322. (Published) https://doi.org/10.1038/s41598-022-14281-z https://doi.org/10.1038/s41598-022-14281-z |
| spellingShingle | Q Science (General) TJ Mechanical engineering and machinery TS Manufactures Nurul Akmal, Che Lah Puhanes, Murthy Mohd Nashrul, Mohd Zubir The physical and optical investigations of the tannic acid functionalised Cu-based oxide nanostructures |
| title | The physical and optical investigations of the tannic acid functionalised Cu-based oxide nanostructures |
| title_full | The physical and optical investigations of the tannic acid functionalised Cu-based oxide nanostructures |
| title_fullStr | The physical and optical investigations of the tannic acid functionalised Cu-based oxide nanostructures |
| title_full_unstemmed | The physical and optical investigations of the tannic acid functionalised Cu-based oxide nanostructures |
| title_short | The physical and optical investigations of the tannic acid functionalised Cu-based oxide nanostructures |
| title_sort | physical and optical investigations of the tannic acid functionalised cu-based oxide nanostructures |
| topic | Q Science (General) TJ Mechanical engineering and machinery TS Manufactures |
| url | http://umpir.ump.edu.my/id/eprint/35010/ http://umpir.ump.edu.my/id/eprint/35010/ http://umpir.ump.edu.my/id/eprint/35010/ http://umpir.ump.edu.my/id/eprint/35010/2/The%20physical%20and%20optical.pdf |