Fabrication of polyurethane/reduced graphene oxide/silver composites and application for electrocatalytic reduction of hydrogen peroxide
QIN Jing-jing1, GAO Xiang1, ZHANG Zhen-yu1, ZHAO Chun-xin1, BAO Lin1,2, LI Yan1
1. 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; 2. Western Baode Technologies Co., Ltd., Xi'an 710201, China
Abstract: 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.
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