金属钯/聚乙撑二氧噻吩-木质素磺酸钠复合材料的制备及电催化性能  

Preparation and Electrocatalytic Properties of Pd/Poly(3,4-ethylenedioxythiophene) -Sodium Lignosulphonate Composites

作　　者：候婷婷 张良[1] 韩选利[1] 柴守宁[1] 钟吕玲[1] Tingting Hou;Liang Zhang;Xuanli Han;Shouning Chai;Lüling Zhong(School of Chemistry and Chemical Engineering,Xi'an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]西安建筑科技大学化学与化工学院,陕西西安710055

出　　处：《高分子材料科学与工程》2019年第2期160-164,170,共6页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(21507103)

摘　　要：以木质素磺酸钠(LGS)作为掺杂剂,三氯化铁和过硫酸铵为氧化剂及引发剂,利用氧化聚合法制备了聚乙撑二氧噻吩-木质素磺酸钠(PEDOT-LGS)复合聚合物,通过化学法沉积金属钯(Pd)粒子获得Pd/PEDOT-LGS复合聚合物功能材料。应用扫描电镜(SEM)、X射线衍射(XRD)、红外光谱(FT-IR)对材料的形貌及结构进行表征。结果显示,获得了分散均匀的Pd纳米粒子复合聚合物功能材料。采用循环伏安测试法(CV)和计时电流测试法(CA)研究该复合材料的电化学行为,结果表明,掺杂了LGS的载体材料PEDOT-LGS的导电性能得到明显改善;与Pd/PEDOT相比,Pd/PEDOT-LGS复合材料对甲醇的电催化氧化活性提高了2.4倍,此外新载体有效地提高了Pd纳米粒子对甲醇在碱性溶液中的电催化活性及催化剂的抗毒化性能。Using sodium lignosulfonate (LGS) as dopant, ferric chloride and ammonium persulphate initiator as oxidant and initiator, poly(3,4-ethylenedioxythiophene)-sodium lignosulphonate (PEDOT-LGS) composite polymers were prepared by oxidative polymerization, Pd/ PEDOT-LGS composites were obtained by chemical deposition of metal palladium (Pd) particles. The morphology and structure of the material were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared (FT-IR). The results show that dispersed Pd nanoparticle composites were obtained. The electrochemical behavior of the composites were investigated by cyclic voltammetry (CV) and chronoamperometry (CA).The results show that the conductivity of PEDOT-LGS doped with LGS is significantly improved;compared with Pd/PEDOT, the electrocatalytic activity of Pd/PEDOT-LGS composites for methanol oxidation is increased by 2.4 times. In addition, the new carrier effectively enhances the electrocatalytic activity of Pd nanoparticles on methanol in alkaline solution and the detoxification of the catalyst.

关 键 词：聚乙撑二氧噻吩 木质素磺酸钠 金属钯 催化剂复合材料 甲醇 

分 类 号：TB333[一般工业技术—材料科学与工程]