Ag-Nanoparticle-Loaded Mesoporous Silica: Spontaneous Formation of Ag Nanoparticles and Mesoporous Silica SBA-15 by a One-Pot Strategy and Their Catalytic Applications

• Published in: Langmuir Vol. 28; no. 10; pp. 4768 - 4775
• Main Authors: Han, Jie, Fang, Ping, Jiang, Wenjuan, Li, Liya, Guo, Rong
• Format: Journal Article
• Language: English
• Published: Washington, DC American Chemical Society 13.03.2012
• Subjects: Catalysis; Chemistry; Colloidal state and disperse state; Exact sciences and technology; General and physical chemistry; Physical and chemical studies. Granulometry. Electrokinetic phenomena; Porous materials; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; One pot reaction; Binary compound; Catalytic reaction; Hydrogen peroxide; Nanoparticle; One step method; Surfactant; Porous material; Silica; Composite material; Mesoporosity; Chemical reduction; Synthesis; Aniline; Silver ion
• ISSN: 0743-7463; 1520-5827
• DOI: 10.1021/la204503b

A facile one-step method was proposed for the successful synthesis of Ag-nanoparticle-loaded mesoporous silica SBA-15 composites, where silver ions and their corresponding reductant aniline were added in the traditional synthetic system of mesoporous silica SBA-15 containing P123 as the surfactant and TEOS as the silica source. Mesoporous silica SBA-15 and Ag nanoparticles were spontaneously formed with Ag nanoparticles embedded in channels and even implanted in frameworks of mesoporous silica SBA-15. A tentative formation process was then proposed according to experimental observations. Furthermore, catalytic activities of Ag-nanoparticle-loaded silica SBA-15 composites toward the reduction of 4-nitrophenol in the presence of NaBH4 and the reduction of H2O2 were also investigated.