Rapid Wet Chemical Synthesis of Cuprous Oxide (Cu2O) Nanoparticles: Effect of Precursor Concentration
| Authors | Sachin S. Sawant , Chandrashekhar M. Mahajan |
| Affiliations |
Department of Engineering Sciences and Humanities, Vishwakarma Institute of Technology, Pune – 411037, Maharashtra, India |
| Е-mail | c_mahajan9@yahoo.com |
| Issue | Volume 14, Year 2022, Number 2 |
| Dates | Received 16 February 2022; revised manuscript received 18 April 2022; published online 29 April 2022 |
| Citation | Sachin S. Sawant, Chandrashekhar M. Mahajan, J. Nano- Electron. Phys. 14 No 2, 02011 (2022) |
| DOI | https://doi.org/10.21272/jnep.14(2).02011 |
| PACS Number(s) | 61.05.Cp, 61.46.Df, 68.37.Ma, 78.40.Kc |
| Keywords | Cuprous oxide (2) , Nanoparticles (70) , Structural properties (9) , Optical properties (22) , FTIR analysis. |
| Annotation |
Rapid synthesis of Cu2O nanoparticles was carried out by wet chemical synthesis technique. The effect of CuSO4 precursor molar concentration (0.05-0.15 mol) on the structural, morphological and optical properties of Cu2O nanoparticles is reported. X-ray diffraction analysis of the synthesized Cu2O powder shows a cubic structure with nanocrystalline nature. The average crystallite size of Cu2O nanoparticles increases from 10 to 25 nm with increasing precursor molarity. Scanning Electron Microscopic (SEM) analysis shows nanocrystalline Cu2O formation with increased particle size due to rise in molarity. The FTIR spectroscopic analysis ascertains the presence of characteristic functional groups in Cu2O. UV-Vis spectra show a characteristic absorbance peak around 485 nm attributed to Cu2O. The energy band gap measurements from the Tauc plot reveal a decrease in band gap energy with increasing precursor molarity owing to increased grain size. The band gap energy decreases from 2.94 to 2.64 eV due to an increase in the grain size mainly due to quantum confinement effect. |
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