Cellulose based three-dimensional multihole ZIF-8/aerogel for adsorbing heavy metal ions and preparation method of cellulose based three-dimensional multihole ZIF-8/aerogel

• Main Authors: YAO JUMING, GAO JUNKUO, BO SHAOGUO
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2017
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses cellulose based three-dimensional multihole ZIF-8/aerogel for adsorbing heavy metal ions and a preparation method of the cellulose based three-dimensional multihole ZIF-8/aerogel. The method adopts the main points of dissolving cellulose by using a urea/sodium hydroxide/water mixed solution as a solvent, uniformly enabling zinc nitrate to disperse into cellulose dissolving liquid, performing simple chemical crosslinking through MBA, and performing freeze-drying to prepare Zn<+>/aerogel; and soaking the Zn<+>/aerogel in a 2-methyl glyoxaline solution for one night so as to obtain the ZIF-8/aerogel. The preparation method disclosed by the invention is simple, the prepared cellulose based three-dimensional multihole ZIF-8/aerogel has a large specific surface area and pore diameters which are uniformly distributed, presents favorable adsorptivity on Cr<6+>, is easy to recycle, and has important environmental benefits and application value. 本发明公开了种用于吸附重金属离子的纤维素基三维多孔ZIF-8/气凝胶及其制备方法，采用方法的要点是将