【作者】 蒋治良； 刘绍璞； 邹彩霞；

【Author】 JIANG Zhi-liang,LIU Shao-pu,ZOU Cai-xia(1. Department of Resource and Environmental Science ,Guangxi Normal University ,Guilin 541004 ,China;2. Institute of Environmental Chemistry .Southwest-China Normal University,Chongqing 400715,China:3. City Construction School of Guangxi,Guilin 541003,China)

【机构】 广西师范大学资源与环境学系； 西南师范大学环境化学研究所； 广西城市建设学校；

【摘要】 在0.004 mol/L HCl介质中,孔雀绿（MG）在-0.60 V产生一个单扫描极谱波,当有PdI₄^2-存在时,PdI₄^2-与MG⁺主要通过静电引力形成疏水性的PdI₄-2MG缔合物分子,PdI₄-2MG分子间存在较强的分子间作用力和疏水作用力而生成（PdI₄-2MG）_n纳米微粒,在470nm处产生1个最强的同步散射峰;而在-0.60V极谱峰降低,这是由于,该复合纳米微粒形成所致。当纳米微粒体系加入乙醇后,体系的同步散射峰消失,极谱峰恢复,由于乙醇致使（PdI₄-2MG）_n纳米微粒分解为PdI₄-2MG分子,研究结果表明,（PdI₄-2MG）_n纳米粒子的形成是其极谱猝灭和散射光增强的根本原因。更多还原

【Abstract】 There is a polarographic peak at - 0. 6 V vs SCE for machilate green (MG) in the medium of 0. 001 mol/L HC1. The PdI42- and MG+ combine into hydrophobic PdI4-2MG association molecule by means of static gravitation. There are stronger Van de Waals forces and hydrophobic forces among PdI4-2MG molecules. So it form (PdI4-2MG)n composite nanoparticle. It exhibits a synchrouns scattering peaks at 470 nm and the effect of enhanced light-scattering. The polargraphic quenching at -0. 6 V is owing to that the MG molecule in the body of the nanoparticle may not be reduced at the surface of DME. The (PdI4-2MG)n nanoparticle can be decomposed into PdI4-2MG association molecule by alcohol. So,the scattering peak disappears. And the polarographic wave comes back. The results demonstrate that the formation of (PdI4-2MG)n composite nanoparticle results to its polarographic quenching effect,enhanced light-scattering.更多还原