文献类型：会议论文

英文题名：The Stirring-assisted Liquid Exfoliation of Hexagonal Boron Nitride and the Performance of h-BN/Cellulose Aerogel

作者：Yuan Bo[3] Ma Tian[1] Lu Yun[2] Kang Yue[1] Liu Chanjuan[4]

第一作者：Yuan Bo

通信作者：Kang, Y[1];Lu, Y[2]

机构：[1]Inst Quartermaster Engn & Technol, Beijing 100010, Peoples R China;[2]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[3]Res Inst Chem Def, State Key Lab NBC Protect Civilian, Beijing 100205, Peoples R China;[4]Xian JingKai 1 Primary Sch, Xian 710000, Shanxi, Peoples R China

会议论文集：6th International Conference on Energy, Environment and Materials Science (EEMS)

会议日期：AUG 28-30, 2020

会议地点：Hulun Buir, PEOPLES R CHINA

语种：英文

外文关键词：Aerogels - Chemical analysis - Corrosion resistance - Crystal structure - Exfoliation (materials science) - III-V semiconductors - Nanocrystallization - Nanosheets - Thermal insulation

年份：2020

摘要：The delamination is the focus of two-dimensional layered materials' nano-crystallization. In this paper, two methods of stirring-assisted liquid exfoliation, DMF exfoliation and Hummers exfoliation, were utilized to prepare h-BN nanosheets. Microstructure, crystal structure and chemical structure were analyzed, which indicated that the h-BN nanosheets, with thickness of 1.4 nm and 5.4 nm respectively, were delaminated from bulk h-BN and their structure didn't show any obvious change, in accordance with the theoretical model. The interaction of oxygen in DMF and boron in h-BN weakened the "lip to lip" interaction between neighboring layers and then nanosheets were gained under violent stirring. Due to excellent corrosion resistance, bulk h-BN couldn't be exfoliated by strong oxidants. H+ protonated h-BN and only weakened slightly the "lip to lip" interaction. As a result, Hummers exfoliation wasn't doing well compared with DMF exfoliation. The h-BN/nano-fibillated cellulose aerogel had a very bag surface area and the air filled in these pores, which gave it the performance of thermal insulation and oil absorption.