Green and facile synthesis of Rh/GO nanocomposites for high catalytic performance
- Resource Type
- Authors
- Qiusen Han; Xueliang Liu; Shuangfei Cai; Chen Wang; Rong Yang; Xinhuan Wang; Yufei Zhang
- Source
- Applied Surface Science. 471:929-934
- Subject
- Materials science
General Physics and Astronomy
chemistry.chemical_element
Nanoparticle
02 engineering and technology
engineering.material
010402 general chemistry
Heterogeneous catalysis
01 natural sciences
Catalysis
Rhodium
law.invention
law
Nanocomposite
Graphene
Selective catalytic reduction
Surfaces and Interfaces
General Chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
0104 chemical sciences
Surfaces, Coatings and Films
chemistry
Chemical engineering
engineering
Noble metal
0210 nano-technology
- Language
- ISSN
- 0169-4332
We report a facile and green route to prepare ligand-free ultrafine rhodium (Rh) nanoparticles decorated on graphene oxide (GO) nanosheets. The ultrafine Rh nanoparticles with average size 1.8 ± 0.4 nm were synthesized by pulsed laser ablation in liquid. The Rh nanoparticles could be uniformly supported on the surface of GO through the electrostatic interaction. The reduction of 4-nitrophenol in presence of NaBH4 was performed as a model reaction to evaluate the catalytic properties of Rh/GO nanocomposites. The Rh/GO nanocomposites showed remarkable high catalytic activities with rapid and complete conversion of 4-nitrophenol to 4-aminophenol. The kinetic constant rate of the Rh/GO nanocomposites was 7.62 × 10−3 s−1, which is 27 times higher than commercial Rh/C catalyst, revealing the high catalytic activity in catalytic hydrogenation. The Rh/GO nanocomposites showed good stability and high catalytic activity due to the small size Rh nanoparticles, uniformly dispersed on GO nanosheets. This work may provide a green and alternative method to prepare ligand-free supported ultrafine noble metal heterogeneous catalysis.