文献类型：期刊文献

英文题名：Functionalization of wood fibers based on immobilization of tannic acid and in situ complexation of Fe (II) ions

作者：Huang, Yuxiang[1] Lin, Qiuqin[1] Yu, Yanglun[1] Yu, Wenji[1]

第一作者：黄宇翔

通信作者：Yu, YL[1]|[a0005b92a29b9f40edd99]余养伦;

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Key Lab Wood Sci & Technol, State Forestry Adm, Xiangshan Rd, Beijing 100091, Peoples R China

年份：2020

卷号：510

外文期刊名：APPLIED SURFACE SCIENCE

收录：;EI(收录号：20200508103753);Scopus(收录号：2-s2.0-85078478033);WOS:【SCI-EXPANDED(收录号:WOS:000514902000061)】；

基金：This work was financially supported by the National Natural Science Foundation of China (No. 31890771).

语种：英文

外文关键词：Wood fibers; Tannic acid; Metal complexes; Hydrophobicity; Thermal stability

摘要：Tannin is often used as a heavy metal adsorption material, and the formation of complex between tannin and metal ion has a certain porous structure. Based on this, in this paper, wood fibers were used as the matrix to immobilize tannic acid, and then Fe (II) ions in aqueous solution were adsorbed in situ to modify some properties of wood fibers. The results showed that the higher the concentration of tannic acid, the more iron complexes immobilized on the wood fibers. These complexes could fill the pores of wood fibers, increase the specific surface area and enhance the moisture absorption. However, too many complexes could cluster, reducing the surface area. On the other hand, the complexes greatly reduced the number of hydroxyl groups on the fiber surface, making the surface hydrophobic. The complexes also could effectively reduce the pyrolysis temperature of wood fibers and increase the amount of residue char. Therefore, through such a simple two-step green treatment, it can not only remove some Fe (II) ions from water, but also modify the porosity, hydrophobicity and thermal stability of wood fibers.