Journal
CATALYSIS TODAY
Volume 309, Issue -, Pages 109-118Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cattod.2017.09.012
Keywords
Gold nanoparticles; SBA-15; Ionic liquid; p-nitrophenol; Hydrogenation
Funding
- JSPS [16H01533]
- Institute for Quantum Chemical Exploration (IQCE)
- Ministry of Education, Culture, Sports, Science and Technology (MEXT), Japan
- Grants-in-Aid for Scientific Research [15K17785, 16H01533] Funding Source: KAKEN
Ask authors/readers for more resources
A series of gold nanoparticles (AuNPs) with controllable size were prepared from immobilized gold-containing ionic liquid on SBA-15 (AuCl_me-Im@SBA-15) at room temperature. AuNPs size and shape could be controlled inside porous SBA-15 in the presence of immobilized 1-methyl-3-(3-trimethoxysilyl- propyl)-imidazolium chloride by controlling a concentration and a feed rate of a reducing agent NaBH4. The smallest AuNPs with the average size of 1.6 nm was obtained at a fixed feed rate of 0.2 ml/min with 4 mM NaBH4. The transformation of AuNPs shape from spherical to capsule-like NPs was observed at low feed rate of 0.04 ml/min. The prepared AuNPs catalysts were characterized by TEM, XPS, FTIR, and XRD. The catalyst with the smallest NPs, AuNP (1.6 nm)_me-Im@SBA-15, exhibited the highest catalytic performance in p-nitrophenol hydrogenation reaction at room temperature. Moreover this catalyst was reusable up to four recycle processes.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available