中南民族大学学报（自然科学版）2022，Vol.41Issue(6)：641-647,7.DOI:10.20056/j.cnki.ZNMDZK.20220601
巯基功能化碳纳米管吸附稀土元素研究
Study on the adsorption of rare earth elements by thiol functionalized carbon nanotube
摘要
Abstract
Thiol functionalized carbon nanotube films were prepared by thiol-ene click reaction and showed high recovery and recyclable adsorption/desorption ability for rare earth elements （REEs）. The effects of the different mercaptans functionalized films，pH value of the adsorption solution，flow rate of the peristaltic pump and eluent concentration on the recovery of REEs were investigated. The results indicated that under the extraction conditions of pH of 7.0，pump speed of 0.2 mL·min-1 and HNO3 eluent concentration of 1.0 mol·L-1，the carbon nanotube film（NCNT-3）functionalized by 2，2'， 2″-（1，3，5-hexahydro-s-triazine-1，3，5-triyl）benzyl mercaptan had good recyclable adsorption/desorption performance for 15 REEs，and the recovery rate remained high after five cycles of adsorption. Scanning electron microscopy（SEM）， specific surface and pore size distribution（BET）and contact angle studies confirmed that the high recovery rate of REEs was due to the introduction of thiol，hydroxyl and carboxyl groups to the carbon nanotube film，such that the surface wettability and adsorption performance were improved.关键词
稀土元素/碳纳米管薄膜/吸附/回收/循环利用Key words
rare earth elements/carbon nanotube film/adsorption/recovery/recycling分类
化学化工引用本文复制引用
汪双元,许泽军,张道洪..巯基功能化碳纳米管吸附稀土元素研究 [J].中南民族大学学报（自然科学版）,2022,41(6):641-647,7.基金项目
国家自然科学基金资助项目（51873233）；中央高校基本科研业务费专项资金资助项目（CZQ20009，CZP20006） （）
