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Enhanced Photocatalytic Hydrogen Production of Hydrothermally prepared CuO-NiO-ZrO₂ Nanocomposite
Karthik Kannan(카난),V. Navakoteswara Rao(라오),Mikiyas Mekete Meshesha(미키),Jun-Mo Yang(양준모),Na Young Kwan(권나영),Jaewon Lee(이재원),Heo Jae-Young(허재영),Bee Lyong Yang(양비룡) 한국에너지기후변화학회 2021 한국에너지기후변화학회 학술대회 Vol.2021 No.11
Hydrogen production from photocatalytic water splitting by non-noble-metal photocatalysts is considered to be the most promising solution to the world energy crisis issues. Herein, a CuO-NiO-ZrO₂ composite with remarkable photocatalytic water reduction activity has been successfully fabricated via a wet chemical route. The crystallinity, morphological, optical characteristics, and photocatalytic hydrogen production of the composite were investigated by XRD, TEM with SAED, and UV-Vis. The results of the XRD study affirmed that the nanocomposite comprises cubic, monoclinic and tetragonal phases. TEM with SAED and EDS analysis demonstrates the surface morphology and formation of the composite. The optical bandgap of CuO-NiO-ZrO₂ nanocomposite is calculated through UV-Vis analysis. The unique morphology, significantly improved charge carrier separation, and synergistic effects of the composite system should be responsible for the excellent photocatalytic activity. These findings propose a new unexplored avenue for the fabrication of highly active and low- cost photocatalyst for practical H₂ generation via photocatalytic reduction.