Pamukova Vocational School, Sakarya University of Applied Sciences, Sakarya, 54900, Turkey.
Food Safety, and Nutrition Department, Food Safety Department, Istanbul Aydın University, Istanbul, 34290, Turkey.
Environ Sci Pollut Res Int. 2023 Jan;30(5):13671-13687. doi: 10.1007/s11356-022-23004-w. Epub 2022 Sep 22.
In this research, prepared activated carbon by HPO from hazelnut shells was coated with silver ions for the preparation of nanoparticles which were mixed in two ratios (1:0.5 and 1:1) by using of chemical reduction method. The adsorption capacity of activated carbons has been proven by BET and iodine number. Then, the antimicrobial effect of nanoparticles on the Staphylococcus aureus and Escherichia coli was investigated; in addition to that, the characterization of hazelnut shell and silver-coated activated carbons was determined by Brunauer-Emmett-Teller (BET), scanning electron microscope (SEM), Fourier transform infrared spectroscopy (FT-IR), and X-ray diffraction (XRD) methods. The optimum condition of activated carbon from hazelnut shells indicated that 66.01% carbon content within 36.22% efficiency, while BET surface area achieved as 1208 m2/g and its contained 0.6104 cm3 g total pore volume. The microbial effect indicated that 105 CFU/mL of E. coli was completely inhibited in 30 min. Silver-coated activated carbon showed excellent bacteriostatic activity against E. coli and S. aureus. The results show that the composite has good prospects for applications in drinking water. E. coli of 10 CFU/mL in drinking water were destroyed within 25 min of contact with the filter made with AgAC.
在这项研究中，榛子壳通过 HPO 制备的活性炭被银离子涂覆，以制备通过化学还原法以两种比例（1:0.5 和 1:1）混合的纳米粒子。通过 BET 和碘值证明了活性炭的吸附能力。然后，研究了纳米粒子对金黄色葡萄球菌和大肠杆菌的抗菌作用；此外，还通过 Brunauer-Emmett-Teller（BET）、扫描电子显微镜（SEM）、傅里叶变换红外光谱（FT-IR）和 X 射线衍射（XRD）方法确定了榛子壳和银涂覆活性炭的特性。榛子壳活性炭的最佳条件表明，碳含量为 66.01%，效率为 36.22%，BET 表面积达到 1208 m2/g，总孔体积为 0.6104 cm3/g。微生物效应表明，在 30 分钟内完全抑制了 105 CFU/mL 的大肠杆菌。银涂覆活性炭对大肠杆菌和金黄色葡萄球菌表现出优异的抑菌活性。结果表明，该复合材料在饮用水处理方面具有良好的应用前景。与用 AgAC 制成的过滤器接触 25 分钟内，饮用水中的 10 CFU/mL 的大肠杆菌被破坏。
