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http://dx.doi.org/10.5322/JESI.2021.30.1.57

Application of Cu-loaded One-dimensional TiO2 Nanorods for Elevated Photocatalytic Environmental Friendly Hydrogen Production  

Kim, Dong Jin (Department of Environmental Engineering, Kyungpook National University)
Tonda, Surendar (Department of Environmental Engineering, Kyungpook National University)
Jo, Wan-Kuen (Department of Environmental Engineering, Kyungpook National University)
Publication Information
Journal of Environmental Science International / v.30, no.1, 2021 , pp. 57-67 More about this Journal
Abstract
Photocatalytic green energy H2 production utilizing inexhaustible solar energy has been considered as a potential solution to problems of energy scarcity and environmental contamination. However, the design of a cost-effective photocatalyst using simple synthesis methodology is still a grand challenge. Herein, a low-cost transition metal, Cu-loaded one-dimensional TiO2 nanorods (Cu/TNR) were fabricated using an easy-to-use synthesis methodology for significant H2 production under simulated solar light. X-ray photoelectron spectral studies and electron microscopy measurements provide evidence to support the successful formation of the Cu/TNR catalyst under our experimental conditions. UV-vis DRS studies further demonstrate that introducing Cu on the surface of TNR substantially increases light absorption in the visible range. Notably, the Cu/TNR catalyst with optimum Cu content, achieved a remarkable H2 production with a yield of 39,239 µmol/g after 3 h of solar light illumination, representing 7.4- and 27.7-fold enhancements against TNR and commercial P25, respectively. The notably improved H2 evolution activity of the target Cu/TNR catalyst was primarily attributed to its excellent separation and efficiently hampered recombination of photoexcited electron-hole pairs. The Cu/TNR catalyst is, therefore, a potential candidate for photocatalytic green energy applications.
Keywords
Green energy; One-dimensional photocatalyst; Solar light; Cost effective; Optimum Cu;
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