Effect of Calcination Temperature on Physicochemical Properties and Antifungal Activity of Nano-Zinc Oxide Prepared by Sol-Gel Method
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Abstract
Zinc oxide is an environmentally friendly substance with broad-spectrum antimicrobial activity. Synthesis of zinc oxide into nanoscale structures can increase its potential for utilization. In this study, nano-zinc oxide was synthesized by sol-gel method using calcination temperatures at 300, 500 and 700°C. This research aimed to study the effect of calcination temperature on physicochemical properties of nano-zinc oxide and its antifungal activity against Aecidium mori (Barclay) Barclay, the causative agent of mulberry red rust. The properties of nano-zinc oxide were investigated and analyzed by using X-Ray Diffraction (XRD), Energy Dispersive X-ray Spectroscopy (EDS), Field Emission Scanning Electron Microscopy (FESEM), Fourier Transform Infrared Spectroscopy (FTIR) and Brunauer-Emmett-Teller (BET) specific surface area analysis. Antifungal activity was studied by poisoned food technique. From the experiments, it was found that the synthesized zinc oxide particles had a hexagonal wurtzite crystal structure. Sizes of the particles were at the nanoscopic scale. They had specific surface areas of 6.381-16.487 m2/g and also exhibited antifungal activity. The nano-zinc oxide synthesized at calcination temperature of 300°C with the concentration of 3,000 µg/mL in potato dextrose agar was found to exhibit the highest antifungal activity. Furthermore, it was found that nano-zinc oxide synthesized at different calcination temperatures had different particle sizes, specific surface areas and antifungal activity.
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บทความที่ได้รับการตีพิมพ์เป็นลิขสิทธิ์ของ วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยอุบลราชธานี
ข้อความที่ปรากฏในบทความแต่ละเรื่องในวารสารวิชาการเล่มนี้เป็นความคิดเห็นส่วนตัวของผู้เขียนแต่ละท่านไม่เกี่ยวข้องกับมหาวิทยาลัยอุบลราชธานี และคณาจารย์ท่านอื่นๆในมหาวิทยาลัยฯ แต่อย่างใด ความรับผิดชอบองค์ประกอบทั้งหมดของบทความแต่ละเรื่องเป็นของผู้เขียนแต่ละท่าน หากมีความผิดพลาดใดๆ ผู้เขียนแต่ละท่านจะรับผิดชอบบทความของตนเองแต่ผู้เดียว
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