甘蔗糖业2025，Vol.54Issue(2)：81-91,11.DOI:10.3969/j.issn.1005-9695.2025.02.010
PDA@Fe3O4-N+对蔗糖溶液中没食子酸的吸附性能研究
Study on the Adsorption Properties of PDA@Fe3O4-N+on Gallic Acid in Sucrose Solution
黄秋琳 1朱玉连 1石梁稳 2陈芝蓉 3黄挺 1农富 1梁咏洁1
作者信息
- 1. 广西博测检测技术服务有限公司,广西 南宁 530007
- 2. 广西壮族自治区产品质量检验研究院,广西 南宁 530007
- 3. 广西科技师范学院食品与生化工程学院,广西 来宾 546199
- 折叠
摘要
Abstract
Polydopamine-modified magnetite with quaternary ammonium groups(PDA@Fe3O4-N+)was synthesized through self-crosslinking and quaternization modification of nano-Fe3O4.The structural and group changes of Fe3O4 before and after modification were characterized using Fourier transform infrared spectroscopy(FTIR)and a vibrating sample magnetometer(VSM).FTIR results revealed alterations in the functional groups of Fe3O4,confirming the successful incorporation of polydopamine and quaternary ammonium groups into Fe3O4,thereby forming the PDA@Fe3O4-N+composite.VSM analysis demonstrated that PDA@Fe3O4-N+exhibited excellent superparamagnetic properties.The adsorption performance of PDA@Fe3O4-N+toward gallic acid in a sucrose solution was investigated through simulated adsorption experiments.The results indicated that the optimal adsorption conditions for gallic acid were pH 9.0,a temperature of 55℃,and prolonged adsorption time,which significantly enhanced adsorption completeness.The adsorption process followed pseudo-second-order kinetics and was identified as a spontaneous endothermic process.The adsorption process could be described in terms of quasi-second-order adsorption kinetic and Langmuir isothermal adsorption models,the thermodynamic study showed that the adsorption process was identified as a spontaneous endothermic process.This study provides theoretical basis and reference for the development of sulfur free and efficient sugar juice decolorizing agents.关键词
季铵盐/PDA/Fe3O4/吸附/没食子酸Key words
Quaternary ammonium salts/PDA/Fe3O4/Adsorption/Galic acid分类
轻工纺织引用本文复制引用
黄秋琳,朱玉连,石梁稳,陈芝蓉,黄挺,农富,梁咏洁..PDA@Fe3O4-N+对蔗糖溶液中没食子酸的吸附性能研究[J].甘蔗糖业,2025,54(2):81-91,11.
