载银石墨烯导电油墨打印电极的研究  

Study on Ag-loading graphene conductive ink printing electrode

作　　者：杨冬静 陈海华 付德刚[1,2] YANG Dong-jing;CHEN Hai-hua;FU De-gang(School of Biological Science&Medical Engineering,Southeast University,Nanjing 210096,China;National Experimental Education Demonstration Center for Biomedical Engineering(Southeast University),Nanjing 210096,China;School of Chemistry and Chemical Engineering,Southeast University,Nanjing 210096,China)

机构地区：[1]东南大学生物科学与医学工程学院,江苏南京210096 [2]生物医学工程国家级实验教学示范中心(东南大学),江苏南京210096 [3]东南大学化学化工学院,江苏南京210096

出　　处：《现代化工》2021年第11期106-111,共6页Modern Chemical Industry

基　　金：国家自然科学基金项目(51172043)。

摘　　要：为改善石墨烯导电油墨的导电性及其电催化性能,在含有Ag^(+)和氧化石墨(GO)的溶液中加入一定量的还原试剂(硼氢化钠),在获得还原石墨烯(RGO)的同时在其表面生成纳米Ag颗粒,制得的载银石墨烯(Ag-RGO)具有良好的水溶性;以羧甲基纤维素钠为粘结剂,可得到稳定的水溶性油墨。将油墨打印在聚酰亚胺(PI)薄膜基底上,在N_(2)气氛中于350℃热处理2 h,其电导率达到5.2×10^(3)S/m。打印电极的电流密度在N_(2)饱和的0.2 mol/L PBS(p H=7.4)中与H_(2)O_(2)的浓度成线性关系(线性范围0.3~3.5 mmol/L);在未除氧的0.1 mol/L NaOH电解液中与葡萄糖的浓度成线性关系(线性范围0.04~0.2 mmol/L),均表现出高的灵敏度。To improve the conductivity and electrocatalytic performance of graphene conductive ink,Na BH_(4) is used as a reducing agent to simultaneously reduce Ag^(+) and graphite oxide(GO)to obtain silver-loading graphene(Ag-RGO).The obtained Ag-RGO has a good water solubility.Using Ag-RGO as conductive phase,and sodium carboxymethyl cellulose as binder,a stable water-soluble conductive ink is obtained.The conductive ink is printed on a polyimide film as an electrode that gains a conductivity of 5.2×10^(3)S·m^(-1)after heating at 350℃for 2 hours in N_(2) atmosphere.The printed electrode shows high sensitivity for both of H_(2)O_(2)and glucose.The current density is linearly related to the concentration of H_(2)O_(2)in N_(2)saturated 0.2 M PBS(p H=7.4)solution with a linear range of 0.3-3.5 m M,and the concentration of glucose in 0.1 M Na OH without deoxygenation,with a linear range of 0.04-0.2 m M.

关 键 词：石墨烯 水性导电油墨 3D打印 柔性电极 传感器 

分 类 号：TQ32[化学工程—合成树脂塑料工业] TQ638