双金属片
催化作用
化学
离子液体
X射线光电子能谱
纳米颗粒
水溶液
离子键合
核化学
化学工程
高分子化学
离子
有机化学
工程类
作者
Mohammad Gholinejad,S H Mozafari,Nasser Nikfarjam,Sara Nayeri,José M. Sansano
摘要
Synergistic effects in bimetallic catalysts produce a catalyst with superior activity than a monometallic component. In this work, a novel magnetic crosslinked copoly(ionic liquid) nanohydrogel was synthesized and employed for the stabilization of AuCo bimetallic nanoparticles (Fe 3 O 4 @PolyIL‐AuCo). This material was characterized using different instrumental techniques such as FT‐IR, TGA, XPS, VSM, solid‐state UV–Vis, SEM mapping, and TEM. Results indicated a narrow size distribution of nanoparticles and high water dispersibility of Fe 3 O 4 @PolyIL‐AuCo. Using this catalyst, a series of nitroarenes were reduced to the corresponding amines in aqueous media. In addition, organic dyes were efficiently degraded by this catalyst. Different experiments dealing with the same transformation confirmed that Fe 3 O 4 @PolyIL‐AuCo exhibited higher catalytic activity than the similar monometallic Au and Co catalysts. This catalyst was recycled for at least 11 consecutive runs with very small deactivation, and TEM, VSM, and XPS confirmed the stability of the reused catalyst.
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