Co75Pt25 alloy nanoparticles: A class of catalyst for the catalytic reduction of 4-nitrophenol with enhanced activity and recycling
Source abstract
Abstract
Abstract We report a facile one-step, co-chemical reduction controlled synthesis of CoxPt100-x (x = 25, 35, 50, 65, 75) alloy nanoparticles (NPs). Alloy NPs with Co to Pt atomic ratios of 25/75, 50/50 and 75/25 were found to exhibit a pure phase and superpara-magnetism with a small NP size distribution. The saturation magnetization for Co75Pt25 NPs (55.17 emu/g) was highest than that for Co25Pt75 NPs (47.58 emu/g) and Co50Pt50 NPs (32.38 emu/g), confirmed the best magnetic response of Co75Pt25 NPs. Furthermore, the average crystallite sizes for CoxPt100-x (x = 25, 50, 75) alloy NPs is 5.72 nm, 5.43 nm and 5.6 nm, respectively. The observation of an obviously reduced catalytic reduction time and increased rate constant confirmed that the CoxPt100-x (x = 25, 50, 75) alloy NPs exhibit intensive performance for the catalytic reduction of 4-nitrophenol (4-NP). Moreover, compared with Co25Pt75 and Co50Pt50 alloy NPs, the Co75Pt25 alloy NPs exhibit short reaction times for catalytic reduction due to their stability in aqueous solution and short induction time. The recycling ability of the alloy catalysts was certified with high yields in four reaction cycles.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nanomaterials for catalytic reactions · Copper-based nanomaterials and applications · Advancements in Battery Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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