reduced graphene oxide (MRGO)/Fe3O4@C) and carbonaceous coatings on magnetic Fe3O4 nanoparticles (Fe3O4@C), for immobilizing metal (CuII, CoII, FeIII or VOIV)–salen complexes were prepared by a facile, green, and efficient chemical approach and first applied in the aerobic epoxidation of styrene with air as the oxidizing agent. The prepared catalysts were characterized by different techniques, such as
核-壳结构磁性纳米催化剂,包括负载在氧化石墨板上的碳包覆磁性Fe 3 O 4纳米颗粒(轻度还原氧化
石墨烯(MRGO)/ Fe 3 O 4 @C)和磁性Fe 3 O 4纳米颗粒(Fe上的含碳涂层)3 O 4 @C),用于固定
金属(Cu II,Co II,Fe III或VO IV)-salen配合物是通过一种简便,绿色,高效的
化学方法制备的,首先用于空气中作为氧化剂的
苯乙烯的好氧环氧化。所制备的催化剂通过不同的技术进行表征,例如XRD,
TEM,FTIR光谱,电感耦合等离子体原子发射光谱,
TEM,热重分析,拉曼光谱和X射线光电子能谱。磁性纳米催化剂MRGO / Fe 3 O 4 @ C–salen–M(M = Cu,Co,Fe或V)表现出比相应的Fe 3 O 4 @ C–salen–M(M = Cu ,Co,Fe或V)物种,可能是由于部位隔离所致,磁性Fe 3 O 4的良好分散纳米颗粒,以及
金属