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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。
The MWCNT-supported Pd-EDTA / MWCNT was prepared by acid treatment of multiwalled carbon nanotubes (MWCNTs) with hydrothermal method and formaldehyde reduction of Pd2 + -EDTA complexes. Scanning electron microscopy (SEM) showed that palladium nanoparticles had better dispersion on MWCNT support. The activity of Pd-EDTA / MWCNT catalyst in alkaline solution for ethanol oxidation was studied by cyclic voltammetry (CV), linear sweep (LSV) and chronoamperometry (CA). The results show that the Pd-EDTA / MWCNT catalyst has higher anodic oxidation peak current and better stability than that of Vulcan XC-72 supported catalyst.