纳米纤维素/聚吡咯气凝胶的制备及吸附性能综合实验设计  

Preparation of nanocellulose/polypyrrole hydrogels and adsorption of Cr(Ⅵ)-interdisciplinary comprehensive experimental design

作　　者：杨明琰[1,2,3] 邓祥云 陈欣玥 蔡晓丹 安琳玉 邢建宇 窦妍 YANG Ming-yan;DENG Xiang-yun;CHEN Xin-yue;CAI Xiao-dan;AN Lin-yu;XING Jian-yu;DOU Yan(School of Water and Environment,Chang’an University,Xi’an 710054,China;Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of the Ministry of Education,Xi’an 710054,China;Key Laboratory of Eco-hydrology and Water Security in Arid and Semi-arid Regions of Ministry of Water Resources,Xi’an 710054,China)

机构地区：[1]长安大学水利与环境学院,陕西西安710054 [2]旱区地下水文与生态效应教育部重点实验室,陕西西安710054 [3]水利部旱区生态水文与水安全重点实验室,陕西西安710054

出　　处：《应用化工》2023年第7期2059-2062,共4页Applied Chemical Industry

基　　金：陕西省重点研发计划(2021SF-443)。

摘　　要：以麦秆基纳米纤维素纤丝(LCNFs)为载体,聚乙烯醇(PVA)为增强剂,通过吡咯原位氧化聚合制备了LCNFs/PVA-PPy(LPP)复合气凝胶,研究了LPP对Cr(Ⅵ)的吸附性能。结果表明,LPP为黑色多孔三维网络结构,吸附Cr(Ⅵ)的最适pH为2,吸附动力学为准二级动力学,吸附等温方程为Freundlich模型。本研究可为生物质资源化利用及Cr(Ⅵ)污染治理提供技术依据,也适合用于化学、材料及环境等相关专业的本科生综合实验教学。A LCNFs/PVA-PPy(LPP)composite hydrogels were prepared by in-situ oxidation polymerization of pyrrole using nanocellulose fibrils(LCNFs)as carrier and polyvinyl alcohol(PVA)as reinforcing agent,the adsorption properties of LPP for Cr(Ⅵ)were studied.The results show that LPP is a black elastic porous three-dimensional network structure.The optimal pH value of Cr(Ⅵ)adsorption is 2,the adsorption kinetics is fitted to the pseudo-second order kinetic model,the adsorption isotherm equation is fitted to the Freundlich model.The results can be used not only for the resource utilization of agricultural waste and Cr(Ⅵ)pollution treatment,but also for the comprehensive experimental teaching of undergraduates in chemistry,materials and environment.

关 键 词：木质纳米纤维素纤丝(LCNFs) 聚吡咯(PPy) 复合气凝胶 Cr(Ⅵ)吸附 综合实验 

分 类 号：TQ352.9[化学工程]