载锌磷酸铈锆抗菌材料的制备及Zn2+吸附机理
刘庆益 , 王鑫鑫 , 付涛 , 辛博 , 李志强 , 赵永志
现代化工 ›› 2026, Vol. 46 ›› Issue (S1) : 234 -240.
载锌磷酸铈锆抗菌材料的制备及Zn2+吸附机理
Preparation and Zn2+ adsorption mechanism of zinc-loaded cerium-zirconium phosphate antimicrobial material
采用共沉淀法合成铈锆碳酸盐前驱体,经磷酸化和锌离子浸渍制备载锌磷酸铈锆材料,并对其结构、形貌及抗菌性能进行表征。分析表明材料为六方晶系,由直径约10 nm的纳米棒堆积而成,比表面积达85.4 m2/g。磷酸铈锆对白色念珠菌抑菌率达99.64%,对金黄色葡萄球菌和大肠杆菌亦具有抑制作用。吸附实验表明,锌离子吸附过程更符合伪二阶动力学模型和Freundlich等温线模型,且高温有利于吸附。该材料兼具高比表面积与优良抗菌性能,具有潜在应用价值。
A cerium-zirconium carbonate precursor was synthesized by coprecipitation,followed by phosphorylation to obtain cerium-zirconium phosphate,which was then loaded with zinc ions via impregnation.The material’s composition,microstructure,and specific surface area were characterized.Its antimicrobial properties were also evaluated.Results show that cerium-zirconium phosphate crystallizes in a hexagonal structure,composed of stacked nanorods (about 10 nm in diameter),with a high specific surface area of 85.4 m2/g.The material exhibited strong antifungal activity against Candida albicans (inhibition rate 99.64%) and certain antibacterial effects against Staphylococcus aureus and Escherichia coli.Furthermore,the adsorption kinetics of zinc ions followed the pseudo-second-order model,while the thermodynamic behavior was better described by the Freundlich isotherm,with enhanced adsorption at higher temperatures.The developed material shows promise for antimicrobial applications due to its structural properties and efficient metal ion loading.
phosphates / rare earths / antimicrobial materials / adsorption / kinetics
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中国北方稀土(集团)高科技股份有限公司科技计划项目(BFXT-2023-D-0006)
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