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Siti Nor Qurratu Aini Abd Aziz,Koe Chee Meng,Swee-Yong Pung,Zainovia Lockman,Anwar Ul-Hamid,Wai Kian Tan 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.118 No.-
Immobilization of photocatalysts on supporting substrates to prevent the loss and deterioration of photocatalyticperformances is an issue to be addressed by researchers. However, the common synthesistechniques such as chemical vapour deposition, sol-gel, or hydrothermal are time- and cost inefficient. A lot of heat is loss to environment when the heat generated outside the reactor is transferring intothe reactor and precursor solution. In this work, ZnO nanorods were grown on kanthal wires using directheating (DH) technique. DH technique offers many advantages as compared to common synthesis techniquessuch as chemical vapor deposition, sol–gel and hydrothermal to produce ZnO nanorods. The heatwas generated directly on the substrate itself, providing effective heating, low electric consumption(0.060 kWh), and rapid synthesis (15 min) of ZnO nanorods. The presence of ZnO nanorods on kanthalwires are verified by XRD, FESEM, TEM/HRTEM, XPS and RTPL analyses. The ZnO nanorods demonstratedgood photocatalytic performance in degradation of RhB dye and heavy metal ions under UV light. Thus,DH is a potential synthesis technique for mass production of wastewater treatment module.