木质素纳米颗粒与海藻酸钠凝胶珠：亚甲基蓝的制备、表征及去除
Lignin Nanoparticles and Alginate Gel Beads: Preparation, Characterization and Removal of Methylene Blue.
作者信息
Luo Tong, Hao Yanping, Wang Chao, Jiang Weikun, Ji Xingxiang, Yang Guihua, Chen Jiachuan, Janaswamy Srinivas, Lyu Gaojin
机构信息
State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, China.
Department of Dairy and Food Science, South Dakota State University, Brookings, SD 57007, USA.
出版信息
Nanomaterials (Basel). 2022 Jan 5;12(1):176. doi: 10.3390/nano12010176.
A novel and effective green system consisting of deep eutectic solvent (DES) was proposed to prepare lignin nanoparticles (LNPs) without any lignin modification. The LNPs are obtained through the dialysis of the kraft lignin-DES solution. The particle size distribution, Zeta potential and morphology of the LNPs are characterized by using dynamic light scattering (DLS), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The average diameter of LNPs is in the range 123.6 to 140.7 nm, and the LNPs show good stability and dispersibility in water. The composite beads composed of LNPs and sodium alginate (SA) are highly efficient (97.1%) at removing methylene blue (MB) from the aqueous solution compared to 82.9% and 77.4% by the SA/bulk kraft lignin composite and pure SA, respectively. Overall, the LNPs-SA bio-nanocomposite with high adsorption capacity (258.5 mg/g) could be useful in improving water quality and other related applications.
提出了一种由低共熔溶剂（DES）组成的新型高效绿色体系，用于制备无需对木质素进行任何改性的木质素纳米颗粒（LNP）。通过对硫酸盐木质素-DES溶液进行透析获得LNP。利用动态光散射（DLS）、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对LNP的粒径分布、Zeta电位和形态进行了表征。LNP的平均直径在123.6至140.7nm范围内，并且LNP在水中表现出良好的稳定性和分散性。与分别由SA/块状硫酸盐木质素复合材料和纯SA去除水溶液中亚甲基蓝（MB）的效率82.9%和77.4%相比，由LNP和海藻酸钠（SA）组成的复合珠对水溶液中亚甲基蓝（MB）的去除效率高达97.1%。总体而言，具有高吸附容量（258.5mg/g）的LNP-SA生物纳米复合材料可用于改善水质及其他相关应用。
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