Abstract
Pure and gradient amounts of cerium (Ce)-doped zinc oxide (ZnO) were synthesized by a co-precipitation method and then their photocatalytic activities were inspected. X-ray diffractometer patterns of the pure and Cedoped ZnO nanostructures exhibit hexagonal wurtzite crystal structure. Field emission scanning electron microscopic images show that the ZnO nanospindel morphology is changed into two-dimensional (2D) polar surface-oriented nanosheets by a cerium doping level up to 0.06 mol.%. The red-shift in the near band edge emission and strong defect states emissions (blue and green) are observed in ZnO with respect to the Ce doping level. From the detailed photocatalytic experiments, the maximum methylene blue dye degradation, 86.9%, is observed on the 0.06 mol.% Ce-doped ZnO photocatalyst. The eventual conclusion is that the edges of the (001) crystallographic facet attach to each other to form a ZnO nanosheet morphology at a specific ratio of Ce doping that serves as a good photocatalyst for methylene blue dye degradation.
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Acknowledgments
Authors G. Vijayaprasath and P. Soundarrajan are grateful to the Department of Science and Technology (DST) for financial support by awarding prestigious National Post-Doctoral Fellow (PDF/2017/000348 and PDF/2017/000497) under the SERB Scheme.
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Vijayaprasath, G., Soundarrajan, P. & Ravi, G. Synthesis of ZnO Nanosheets Morphology by Ce Doping for Photocatalytic Activity. J. Electron. Mater. 48, 684–695 (2019). https://doi.org/10.1007/s11664-018-6763-y
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DOI: https://doi.org/10.1007/s11664-018-6763-y