In situ synthesis of palladium nanoparticles on multi-walled carbon nanotubes and their electroactivity for ethanol oxidation
来源期刊：Rare Metals2013年第6期
论文作者：Qing-Feng Yi Li-Zhi Sun
文章页码：586 - 591
摘 要：Pd nanoparticles（Pd-NPs）were prepared and directly anchored on the surface of multi-walled carbon nanotubes（MWCNTs）in the absence of chemical reduction agent,where MWCNTs were used as both the chemical reduction agent and the support substrate of Pd-NPs.Effect of various surfactants on the in situ deposition of PdNPs on MWCNTs was investigated.When MWCNTs were modified with a cationic surfactant（hexadecyl trimethyl ammonium bromide,CTAB）,the amount of the Pd-NPs（Pd-NP/CTAB-MWCNT）generated by such an in situ deposition method gets a notable increase,and the size of the as-synthesized Pd-NPs becomes smaller,compared with those in the absence of any surfactant（Pd-NP/MWCNT）or in the presence of an anionic surfactant SDS（Pd-NP/SDS-MWCNT）and a neutral surfactant OP（PdNP/OP-MWCNT）.Results show that the MWCNTs modified with CTAB are propitious to the in situ reduction of Pd2?.Among the prepared catalysts,Pd-NP/CTABMWCNT displays the highest electroactivity for ethanol oxidation in alkaline media.
摘要：Pd nanoparticles（Pd-NPs）were prepared and directly anchored on the surface of multi-walled carbon nanotubes（MWCNTs）in the absence of chemical reduction agent,where MWCNTs were used as both the chemical reduction agent and the support substrate of Pd-NPs.Effect of various surfactants on the in situ deposition of PdNPs on MWCNTs was investigated.When MWCNTs were modified with a cationic surfactant（hexadecyl trimethyl ammonium bromide,CTAB）,the amount of the Pd-NPs（Pd-NP/CTAB-MWCNT）generated by such an in situ deposition method gets a notable increase,and the size of the as-synthesized Pd-NPs becomes smaller,compared with those in the absence of any surfactant（Pd-NP/MWCNT）or in the presence of an anionic surfactant SDS（Pd-NP/SDS-MWCNT）and a neutral surfactant OP（PdNP/OP-MWCNT）.Results show that the MWCNTs modified with CTAB are propitious to the in situ reduction of Pd2?.Among the prepared catalysts,Pd-NP/CTABMWCNT displays the highest electroactivity for ethanol oxidation in alkaline media.
关键词：
