Korea University · Materials Science
Professor Periyayya Uthirakumar's research lab specializes in the design and development of advanced nanomaterials, particularly carbon quantum dots (CQDs) and metal oxide semiconductors, for environmental and energy applications. The lab focuses on enhancing photocatalytic degradation of pollutants using doped ZnO and CQD-based heterostructures, while also pioneering sustainable applications such as UV-protective polymer films for food preservation. Another key direction involves the integration of nanomaterials into optoelectronic devices, exemplified by the fabrication of efficient white-light-emitting diodes using ZnO-polymer hybrids. The research emphasizes eco-friendly synthesis methods and practical solutions for industrial and environmental challenges.
Figures are computed from collected data and may differ slightly.
An N-doped ZnO photocatalyst decorated with carbon quantum dots and active under irradiation with daylight was developed for the degradation of dyes in industrial wastewaters.
A convenient method to isolate >80% CQD and the fabrication of a non-toxic CQD polymer film which could protect UV-sensitive foods.
Hybrid white-light-emitting diodes were fabricated using a ZnO coated polymer hybrid material containing 20 wt % of ZnO. The CIE coordinates of 2 wt % hybrids materials reached 0.30 and 0.36, which are very closed to the white region.
Carbon quantum dot decorated leaf-like CuO nanosheets were prepared by a simple method and successfully dispersed in the polymer film to improve UV-shielding properties.
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