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Effect of Cu2+ doping on the structural and optical properties of ZnAl2O4 nanosheets

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Pristine and Cu-doped ZAO nanosheets have been successfully synthesized using the hydrothermal path. XRD analysis confirmed ZAO's single-phase cubic spinel structure. The morphology of ZAO changed significantly from micro-hexagons to nanosheets with the doping of Cu ions. The XPS spectra of Cu doped ZAO confirm the presence of Zn, Al, O and Cu at 2+ , 3+ , 2− and 2+ oxidation states, respectively. The bandgap of Cu-doped ZAO nanosheets is less than that of pure ZAO. Due to the tunable bandgap, the synthesized material can be used as a potential candidate for energy-based applications.

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The authors (Lakshmiprasad and Thirumala Rao) would like to express their gratitude to the GMR Institute of Technology in India for funding this research through SEED grant. This work was supported by the Technology Innovation Program (Grant Number: 20011622) funded By the Ministry of Trade, Industry & Energy (MOTIE, South Korea) and Korea Electric Power Corporation (Grant Number: R21XO01-9).

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Correspondence to Thirumala Rao Gurugubelli, Bathula Babu or Kisoo Yoo.

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Maddi, L., Gurugubelli, T.R., Babu, B. et al. Effect of Cu2+ doping on the structural and optical properties of ZnAl2O4 nanosheets. Chem. Pap. 77, 241–248 (2023).

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