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- Title
Facile Synthesis of MnO2@SiO2/Carbon Nanocomposite-based Gold Catalysts from Rice Husk for Low-Temperature CO Oxidation.
- Authors
Luong, Xuan-Dien; Luu, Quynh-Trang; Nguyen, Tien-Thanh; Huynh, Dang-Chinh; Ngo, Duc-Quan; Yoshimura, Masamichi; Ishida, Tamao
- Abstract
Herein, MnO2@SiO2/C was produced from rice husk derived SiO2/carbon composite and MnO2 via hydrothermal method. The nanostructure gave good microstructural, morphological properties with highly catalytic properties. The hybrid catalyst comprising of MnO2@SiO2/C nanocomposite-supported gold nanoparticles was successfully fabricated by the novel solid grinding and tested for CO oxidation's application. MnO2 nanoballs are 5 − 8 nm in diameter with a shell thickness of 1 nm, packing with laminar [MnO6] unit cells. The as-prepared gold catalysts containing 2wt% of Au loading, exhibited 50% CO conversion and a high specific activity of 0.21 molCO gAu−1 h−1 at 38 °C. MnO2@SiO2/C nanocomposite-supported gold nanoparticles were prepared by solid grinding using a non-volatile organogold(III) complex and rice husk. The catalysts showed high activity for CO oxidation.
- Subjects
GOLD catalysts; RICE hulls; GOLD nanoparticles; OXIDATION; CATALYSTS; OXIDATION of carbon monoxide
- Publication
Catalysis Letters, 2020, Vol 150, Issue 9, p2726
- ISSN
1011-372X
- Publication type
Article
- DOI
10.1007/s10562-020-03180-5