Method for regulating the distribution of metallic nanoparticles within the resin support

摘要

A method for regulating the distribution of metallic nanoparticles within the resin support is provided. This method uses the ion exchange or absorption resin bearing basic functional groups as the support; firstly introducing the metal in the form of anionic complexes onto the resin support through the ion exchange process, then realizing the purpose of regulating the distribution of the metal and its compound within the resin support by means of changing the concentration of the reductive or deposition agent in water solution and the reaction time. The regulated distribution of metallic nanoparticles within the resin support is in the form of rings with different depths and densities. The different distribution patterns result in improvements upon properties of the inorganic-organic composite material, such as reaction activity, reaction selectivity and metallic stability, and has significant referential value for preparation and structural regulation of other inorganic-organic composite materials of the same kind.

主权项

1. A method for regulating a distribution of metallic compound nanoparticles within a resin support, consisting of the following steps:
using a styrenic or acrylic ion exchange resin bearing basic functional groups as the resin support; introducing an anionic complex in a water solution onto the resin support through an ion exchange process, wherein the anionic complex is selected from the group consisting of FeCl4−, CdCl42− and PdCl42−; providing a reductive or deposition agent, wherein the reductive or deposition agent is fixating the metallic compound nanoparticles within the resin support through a reduction or deposition process; forming a distribution ring within the resin support consisting of the metallic compound nanoparticles; and increasing a concentration of the reductive or deposition agent over the reaction time to inwardly increase a depth and a density of the distribution ring.