化工学报2019，Vol.70Issue(3)：1152-1162,11.DOI:10.11949/j.issn.0438-1157.20180995
乳液法制备聚乙烯醇-石墨烯气凝胶及其对纯有机物的吸附
Preparation of polyvinyl alcohol-graphene aerogel by emulsion method and its adsorption on pure organics
摘要
Abstract
A polyvinyl alcohol-graphene aerogel was prepared by using a graphene oxide (GO) -stabilized Pickering emulsion as a soft template. The effects of GO concentration, homogenization speed, oil/water ratio, the amount of ethylenediamine (EDA) and polyvinyl alcohol (PVA) on the stability, particle size distribution of the emulsion and the formation of aerogel were investigated. It was found that the drop size of the emulsion could be controlled by changing the emulsion composition ratio. Then, the density and porosity of the aerogel also could be controlled. The polyvinyl alcohol-graphene aerogel (PGA) prepared under optimal preparation conditions was characterized by SEM, FT-IR, Raman and XRD. It was found that GO had been reduced and assembled to form a three-dimensional network structure (PGA) after the hydrothermal reaction and the pore size of the PGA was substantially the same as the particle size of the emulsion. The extrusion test of PGA was carried out and it was observed that PGA had both longitudinal and lateral bidirectional extrusion resilience. And the PGA still had good elasticity after more than 200 times repeated extrusion. The adsorption amount of pure organics by PGA was up to 280 g·g-1, and the volume of organics adsorbed per gram of PGA was constant value.关键词
聚乙烯醇/石墨烯/气凝胶/乳液/弹性/复合材料Key words
polyvinyl alcohol/graphene/aerogel/emulsions/elasticity/composites分类
化学化工引用本文复制引用
王振有,刘会娥,朱佳梦,陈爽,于安然..乳液法制备聚乙烯醇-石墨烯气凝胶及其对纯有机物的吸附[J].化工学报,2019,70(3):1152-1162,11.基金项目
山东省自然科学基金项目(ZR2017MB015) （ZR2017MB015）
中国石油科技创新基金项目(2017D-5007-0601) （2017D-5007-0601）
重质油国家重点实验室资助项目(SLKZZ-2017002) （SLKZZ-2017002）
