Synthesis of Hybrid Cu-Doped TiO₂ Photocatalyst for Dye Removal

Abstract:

Titanium dioxide (TiO₂) photocatalyst is one of the promising semiconductors used for the degradation of commercial dyes. However, it has to be doped with other metals to increase its efficiency, reactivity and stability. This study was carried out to synthesize hybrid Cu-doped TiO₂ using wet impregnation method by varying the loading of copper precursor (0.3-1.0 wt%), incubation temperature (50-90°C) and incubation time (1-24 h). The synthesized hybrid Cu-doped TiO₂ was characterized using XRD, EDX, FESEM and BET to obtain the structural, elemental, and surface morphological information. The photocatalytic activities of the synthesized Cu-doped TiO₂ were investigated for the degradation of methyl orange (MO) under UV-light irradiation. The results revealed that the optimum Cu loading was at 0.5wt% Cu with incubation temperature of 50°C and 2h incubation time. The hybrid Cu-doped TiO₂ showed an excellent dye degradation efficiency ranging from 40-82% under UV-light irradiation.

• Periodical: Key Engineering Materials (Volume 797)
• Pages: 84-91
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.797.84
• Online since: March 2019
• Authors: Ying Pei Lim*, Ying Chin Lim
• Keywords: Cu-Doped TiO₂ Photocatalyst, Methyl Orange, Photodegradation, Wet Impregnation

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