采用简单的化学氧化聚合法制备了新型多孔结构的聚乙酰苯胺纳米纤维(np-PAANI),并以此为载体在络合剂的存在下合成了Pt纳米微粒修饰的np-PAANI复合物膜电极C/np-PAANI/Pt.样品的形貌和结构通过扫描电镜(SEM)、透射电镜(TEM)和X射线衍射(XRD)进行了表征.在0.5mol·L^-1CH3OH+0.5mol·L^-1H2SO4混合溶液中考察了C/np-PAANI/Pt催化剂对甲醇的电催化氧化性能.结果表明,以np-PAANI负载的Pt催化剂对甲醇的电催化氧化活性和稳定性都比普通PAANI结构及石墨粉负载的Pt催化剂好很多.
A novel nanoporous poly(N-acetylaniline) (np-PAAN/) film with a network structure modified with Pt nanoparticles (C/np-PAANI/Pt) was fabricated using chemical oxidation polymerization and a reduction method. The morphology and composition of the final products were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray diffraction (XRD). The electrocatalytic activity of C/np-PAANI/ Pt towards the oxidation of methanol was investigated using cyclic voltammetry and chronoamperometric methods in 0.5 mol·L^-1 CH3OH+0.5mol·L^-1 H2SO4 mixture solution. Results indicated that C/np-PAANI/Pt catalysts exhibited improved electrocatalytic activity, anti-poisoning ability, and good stability towards methanol oxidation by comparison to C/PAANI/Pt or C/Pt.