钯纳米颗粒的制备及对乙醇氧化的电活性  

Preparation of palladium nanoparticles and its electrocatalytic activity for oxidation of ethanol

作　　者：孙丽枝[1] 易清风[1] 刘小平[1] 聂会东[1] 

机构地区：[1]湖南科技大学化学化工学院,湘潭411201

出　　处：《化工新型材料》2013年第8期56-58,共3页New Chemical Materials

基　　金：湖南省自然科学省市联合基金(10JJ9003);湖南省高校创新平台开放基金(11K023);湖南省发改委科技基本建设项目([2010]1060)

摘　　要：以酸化处理后的多壁碳纳米管(MWCNT)为载体,采用水热法,用甲醛还原Pd2+-EDTA络合物,制得MWCNT负载的纳米钯催化剂(Pd-EDTA/MWCNT)。扫描电镜(SEM)显示,纳米钯颗粒在MWCNT载体上有较好的分散度。利用循环伏安(CV)、线性扫描(LSV)和计时电流法(CA)法,研究了碱性溶液中Pd-EDTA/MWCNT催化剂对乙醇氧化的电活性。结果表明,与采用碳粉(Vulcan XC-72)为载体的催化剂相比,Pd-EDTA/MWCNT催化剂对乙醇的电化学氧化具有较高的阳极氧化峰电流和较好的稳定性。MWCNT-supported Pd nanoparticles were prepared by a hydrothermal process using PdCl2 as a precursor in the presence of the ligand EDTA and HCHO as a reducing agent.SEM image showed that Pd nanoparticles were well dispersed on the surface of the MWCNT.Cyclic voltammetry（CV）and chronoamperometry（CA）were applied to evaluate the electrocatalytic activity of the Pd-EDTA/MWCNT electrode towarded ethanol oxidation in alkaline solution.Results showed that,compared with carbon（Vulcan XC-72）-supported Pd catalyst,Pd-EDTA/MWCNT catalyst presented high anodic current density and stability for ethanol oxidation.

关 键 词：钯电极 乙醇氧化 钯纳米颗粒 碳纳米管 

分 类 号：TB383.1[一般工业技术—材料科学与工程]