奇托作为生物基联体,用于生产化催化剂
Stefano Paganelli1,2, Eleonora Brugnera1, Alessandro Di Michele3
1Department of Molecular Sciences and Nanosystems, University Ca' Foscari of Venice, Via Torino 155, 30172 Mestre, Italy.
奇托桑稳定了和金属纳米粒子 (M(0) NPs,以实现高效的化. 这些生物基催化剂可回收和选择性,提供可持续的替代品.
科学领域:
- 材料科学 材料科学 材料科学
- 绿色化学 绿色化学
- 纳米技术 纳米技术
背景情况:
- 对于化石产品的环保替代品的需求日益增长.
- 生物基聚合物显示出作为金属纳米粒子合成的配体的潜力.
- 奇托 (CS) 是一个有前途的生物基聚合物用于纳米粒子稳定.
研究的目的:
- 为了合成和表征 (Ru) 和 (Rh) 金属纳米粒子 (M(0) NPs) 稳定通过奇托 (CS).
- 评估这些M(0) NPs-CS在化反应中的催化性能.
- 评估开发的催化系统的可回收性和选择性.
主要方法:
- 通过将金属盐与水性CS溶液混合,然后减少NaBH4,合成Ru(0) 和Rh(0) 纳米颗粒.
- 使用FT-IR,DSC,TGA,SEM,EDX,TEM和XRD进行表征.
- 在化 (E) - 化和酸中应用,然后进行液液提取用于催化剂回收.
主要成果:
- 通过各种光谱和显微镜技术证实了基托稳定的Ru(0) 和Rh(0) 纳米粒子 (M(0) NPs-CS) 的形成.
- 通过SEM观察到Rh{0}-CS的粒子大小低于40nm,Ru{0}-CS的粒子大小低于10nm.
- 在化反应中,NP-CS表现出高效率,选择性和可回收性 (最多四个周期).
结论:
- 酸盐是稳定Ru(0) 和Rh(0) 纳米颗粒的有效连接体.
- 由此产生的M(0) NPs-CS催化剂具有高效率,选择性,并且可用于化.
- 本研究提出了一种可持续的方法,用于开发先进的化催化剂.
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