摘要
以绿色天然高分子大豆蛋白和海藻酸钠为原料,采用双交联技术,制备了大豆蛋白基复合凝胶球。采用扫描电子显微镜(SEM)、原子力显微镜(AFM)、Zeta电位分析、傅立叶变换红外光普(FTIR)和X射线光电子能谱(XPS)表征了大豆蛋白基复合凝胶球组成和微观结构,并进一步研究了其对亚甲基蓝染料吸附性能。结果表明:大豆蛋白基复合凝胶球为多孔纳米结构,凝胶球表面Zeta电位随溶液环境pH值升高降低,弱碱性环境(pH=8)有利于吸附带正电荷亚甲基蓝染料分子。大豆蛋白基复合凝胶球对亚甲基蓝具有优良的吸附能力,最大脱除效率可达91%,吸附行为符合准二级动力学模型和langmuir等温吸附模型。Langmuir吸附模型计算出的最大吸附容量可达596 mg/g。大豆蛋白基复合凝胶球表现出良好的再生循环使用性能。
In this paper,soybean protein based composite gel spheres were prepared by double crosslinking technology based on green natural macromolecule soybean protein and sodium alginate as raw materials.The composition and microstructure of soy protein based composite gel spheres were characterized by scanning electron microscopy(SEM),atomic force microscopy(AFM),Zeta potential analysis,Fourier transform infrared spectroscopy(FTIR)and X-ray photoelectron spectroscopy(XPS).The results showed that the soybean protein based composite gel spheres were porous nanostructures,and the Zeta potential on the surface of the gel spheres decreased with the increase of the pH value of the solution environment.Weakly alkaline environment(pH=8)was conducive to the adsorption of positively charged methylene blue dye molecules.Soybean protein based composite gel spheres have excellent adsorption capacity for methylene blue,and the maximum removal efficiency can reach 91%.The adsorption behavior conforms to the pseudo-second-order kinetic model and the Langmuir isotherm adsorption model.Langmuir model calculated that the maximum adsorption capacity could reach 596 mg/g.The soybean protein based composite gel spheres showed good regeneration and recycling performance.
作者
刘锋
陈燕舞
邹展珊
黄钦裕
潘晓琳
陈龙文
LIU Feng;CHEN Yan-wu;ZOU Zhan-shan;HUANG Qin-yu;PAN Xiao-lin;CHEN Long-wen(College of Light Chemical Industry and Materials Engineering,Shunde Polytechnic,Foshan 528300,Guangdong,P.R.China)
出处
《林产工业》
北大核心
2023年第9期24-30,共7页
China Forest Products Industry
基金
广东省科技创新战略专项资金(pdjh2023b1073)
广东省普通高校重点领域项目(2022ZDZX4119)
广东省普通高校创新团队项目(2020KCXTD057)。
关键词
大豆蛋白
海藻酸钠
双交联
亚甲基蓝
吸附
Soybean protein
Sodium alginate
Double crosslinking
Methylene blue
Adsorption
