Tannic Acid Film Based on One-Dimensional Supramolecular Self-Assembly for Electrical Conductivity and Oil-Water Separation
文献类型： 外文期刊
作者： Yang, Jie 1 ; Yang, Fulin 1 ; Liu, Can 1 ; Sun, Hao 1 ; Hou, Defa 1 ; Zheng, Yunwu 1 ; Zou, Yuan 1 ; Liu, Jingyan 1 ; Tian, Hao 2 ; Lin, Xu 1 ;
作者机构： 1.Southwest Forestry Univ, Glued Prod Natl Joint Engn Res Ctr Highly Efficien, Yunnan Key Lab Wood Adhes, Kunming 650224, Yunnan, Peoples R China
2.Yunnan Acad Agr Sci, Agroprod Proc Res Inst, Kunming 650224, Yunnan, Peoples R China
关键词： tannic acid; self-assembly; nanofiber; electrically conductive; oil-water separation
期刊名称：ACS APPLIED MATERIALS & INTERFACES （ 影响因子：8.2； 五年影响因子：8.5 ）
ISSN： 1944-8244
年卷期： 2024 年 16 卷 42 期
页码：
收录情况： SCI
摘要： Tannic acid is widely regarded as one of the most promising natural polyphenolic compounds. However, current research predominantly focuses on the utilization of its phenolic hydroxyl groups, with limited exploration of the functional potential of its aromatic structure. Herein, one-dimensional nanofibers based on supramolecular self-assembly were successfully prepared through the simple alkylation reaction of tannic acid and the pi-pi stacking of aromatic structures. These fibers, with lengths reaching tens of micrometers and an average height of 10 nm, were clearly observed using SEM and AFM. A film with excellent electrical conductivity (sigma = 37.9 mu S/cm) was fabricated by vacuum filtering the organic suspension of these fibers, which was 100-fold higher than that of the TA film. Additionally, the hydrophobic and lipophilic properties of Bn-TA were further investigated through oil-water separation experiments, where the Bn-TA membrane displayed excellent separation efficiency and durability, maintaining stable performance over multiple cycles. This strategy presents opportunities for the high-value utilization of tannic acid.
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