Efficient reduction of hexavalent chromium over functionalized-graphene-supported Pd nanoparticles
Source abstract
Abstract
The hexavalent chromium-containing pollutants are seriously harmful to human living environment. Catalytic reduction of Cr(VI) to Cr(III) is an effective way to reduce the impact of pollutants. Uniform spherical Pd nanoparticles are synthesized onto PVP-functionalized graphene and sizes of the particles are adjusted. The obtained Pd/graphene catalyst with an average diameter 2.42 nm of Pd particles exhibits the superior catalytic activity in the reduction of Cr(VI) to Cr(III), with a much high turnover frequency of 132.8 min−1. Superparamagnetic Pd/graphene shows the good catalytic activity and easily separation for recycling. The present Pd catalysts have attractive stability in the reductive reaction under high temperature and low pH, which keep constant activities for many recycles. The PVP-functionalized graphene as a support not only favors the formation of well-dispersed Pd nanoparticles but also provides the high surface for the adsorption and mass transfer of reagents. This support is potential to be used for other metal nanoparticle catalysts. Graphical abstract
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nanomaterials for catalytic reactions · Adsorption and biosorption for pollutant removal · Environmental remediation with nanomaterials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (54)
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