聚氨酯/还原氧化石墨烯/银复合材料的制备及其电催化性能研究  

Fabrication of polyurethane/reduced graphene oxide/silver composites and application for electrocatalytic reduction of hydrogen peroxide

作　　者：秦晶晶 高翔[1] 张镇宇 赵春欣 鲍琳 李延 QIN Jing-jing;GAO Xiang;ZHANG Zhen-yu;ZHAO Chun-xin;BAO Lin;LI Yan(Key Laboratory for Synthetic and Natural Functional Molecular Chemistry of the Ministry of Education,College of Chemistry and Materials Science,Northwest University,Xi'an 710127,China;Western Baode Technologies Co.,Ltd.,Xi'an 710201,China)

机构地区：[1]西北大学化学与材料科学学院,合成与天然功能分子化学教育部重点实验室,陕西西安710127 [2]西部宝德科技股份有限公司博士后创新基地,陕西西安710201

出　　处：《现代化工》2022年第10期96-100,107,共6页Modern Chemical Industry

基　　金：国家自然科学基金(21706214);陕西省教育厅自然科学专项(18JK0766);西北大学大学生创新创业训练计划创新训练项目(S202010697504,2021382);西安市博士后创新基地项目(2019-18)。

摘　　要：以氧化石墨烯(GO)为基体、水性聚氨酯(WPU)为填料,制备了WPU-GO复合材料,并探究了WPU的分子质量及流变学性能。分析结果表明,WPU在四氢呋喃作流动相时分子质量为4028,是非牛顿流体中的一种具有剪切稀化性质的假塑性流体。在制得的PU-GO复合材料上进一步负载纳米银颗粒,并通过SEM、XRD等对PU-rGO-Ag复合材料的形貌及组分进行分析,对其电催化过氧化氢(H_(2)O_(2))的性能进行了测试。结果表明,制得的PU-rGO-Ag复合材料具有较好的电催化活性和较高的灵敏度,检测范围为4~40 mmol/L,同时对多种干扰源均具有良好的抗干扰能力。WPU-GO composites are prepared by using graphene oxide(GO)as matrix as well as waterborne polyurethane(WPU)as filler.The molecular weight and rheological property of WPU are investigated by means of GPC.It is shown that WPU has a molecular weight of 4,028 when tetrahydrofuran is used as mobile phase,and is a pseudoplastic fluid that belongs to non-Newtonian fluid furthermore performing shear thinning property.The prepared WPU-GO composite is loaded with silver nanoparticles to obtain PU-rGO-Ag composite.The morphology and composition of PU-rGO-Ag composite are further characterized,while its performance in electrocatalytic of hydrogen peroxide is tested.The results show that the prepared PU-rGO-Ag composite has good electrocatalytic activity,high sensitivity,wide detection range(4-40 mmol·L^(-1))and good anti-interference ability to a variety of interference sources.

关 键 词：水性聚氨酯 流变学 银 石墨烯 电催化 

分 类 号：TQ150.7[化学工程—电化学工业] TQ150.1[理学—分析化学] O657.14[理学—化学]