Anisotropic super-hydrophobic/super-oleophylic composite aerogel material and preparation method thereof

• Main Authors: XU ZHONGXIAO, NI JIAKANG, YANG HAN, YUAN FENG, LI HAIYAN, HUANG YE, ZHANG YIRU, WANG JIN, XIE CHUNMIAO, ZHU YONGYAN, QIN YUYANG, DAI JIANYU, HONG YIMING
• Format: Patent
• Language: Chinese; English
• Published: 26.01.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR PREPARATION OR CHEMICAL WORKING-UP; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE; WORKING-UP

The invention discloses an anisotropic super-hydrophobic/super-oleophylic composite aerogel material and a preparation method thereof.The preparation method comprises the steps that natural seaweed serves as a carrier, MOFs grow on the surface of the carrier in situ, then the MOFs seaweed and PVDF are directionally compounded through directional freeze drying, and a DMF solvent is further removed through a phase transfer method. Due to the introduction of the MOFs (at) seaweed, the nanoscale roughness can be established, and the hydrophobic and oleophylic capabilities of the aerogel are enhanced; the oil absorption capacity of the aerogel in the radial direction can be remarkably enhanced through directional freeze drying; the porosity of the aerogel can be obviously improved by removing the DMF solvent; the PVDF aerogel prepared by the directional freeze-drying method has excellent mechanical properties, and can greatly improve the reusability of the matrix of the MOFs-seaweed powder as the matrix of the MOF