【摘要】 用3-(甲硫基)苯胺(MA)修饰金属-有机骨架MIL-101(Cr)(简称MIL-101)得到MIL-101-MA;然后,通过Ag—S键的作用将Ag纳米粒子固定在MIL-101-MA表面,得到Ag@MIL-101-MA复合材料。产品经XPS、SEM、EDX、Raman和XRD表征,结果表明:获到了分散均匀、稳定而不团聚的Ag@MIL-101-MA复合材料。将其用于催化还原4-硝基苯酚(4-NP)得到4-氨基苯酚(4-AP)的反应,表现出很高的催化活性,在室温下反应5 min,4-NP的转化率接近100%。另外,5次催化循环后,该反应的转化率仍高达95%。更多还原

【Abstract】 With 3-(methylthio) aniline(MA) to modify metal-organic framework MIL-101(Cr)(MIL-101), MIL-101-MA was obtained. Subsequently, Ag nanoparticles on the surface via Ag-S bonds was immobilized, and Ag@MIL-101-MA was synthesized. The as-obtained composites were characterized by XPS, SEM, EDX, Raman and XRD. It is found that the uniform and well-dispersed composites can be obtained, which later can be used to catalyze the reductive reaction from 4-nitrophenol(4-NP) to 4-aminophenol(4-AP) and exhibit high catalytic activity. The results show that the conversion rate of 4-NP is close to 100% for 5 min at room temperature. Moreover, the conversion rates of this reaction are up to 95% after ?ve cycles of catalysis.更多还原