文献类型：期刊文献

英文题名：Facile Fabrication of Nanofibrillated Chitin/Ag2O Heterostructured Aerogels with High Iodine Capture Efficiency

作者：Gao, Runan[1,3] Lu, Yun[2,3] Xiao, Shaoliang[1,3] Li, Jian[1,3]

第一作者：Gao, Runan

通信作者：Li, J[1];Lu, Y[2];Lu, Y[3];Li, J[3]

机构：[1]Northeast Forestry Univ, Mat Sci & Engn Coll, Harbin 150040, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[3]Northeast Forestry Univ, Key Lab Biobased Mat Sci & Technol, Minist Educ, Harbin 150040, Peoples R China

年份：2017

卷号：7

期号：1

外文期刊名：SCIENTIFIC REPORTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000404126500043)】；

基金：This study was supported by Key Laboratory of Bio-based Material Science & Technology (Northeast Forestry University), Ministry of Education (grant no. SWZCL2016-01); and the National Natural Foundation of China (grant no. 31500468, 31270590, and 31470584).

语种：英文

摘要：Nanofibrillated chitin/Ag2O aerogels were fabricated for radioiodine removal. Chitin was first fabricated into nanofibers with abundant acetyl amino groups (-NHCOCH3) on the surface. Then, highly porous chitin nanofiber (ChNF) aerogels were obtained via freeze-drying. The ChNF aerogels exhibited a low bulk density of 2.19 mg/cm(3) and a high specific surface area of 179.71 m(2)/g. Ag2O nanoparticles were evenly anchored on the surfaces of ChNF scaffolds via strong interactions with -NHCOCH3 groups, subsequently yielding Ag2O@ ChNF heterostructured aerogels. The composites were used as efficient absorbents to remove radioiodine anions from water and capture a high amount of I-2 vapor in the forms of AgI and iodine molecules. The adsorption capacity of the composite monoliths can reach up to 2.81 mmol/g of I-anions. The high adsorbability of the composite monolithic aerogel signifies its potential applications in radioactive waste disposal.