We reported novel nanoporous gold (NPG) with surface modified by TiO 2 nanoparticles. The as-fabricated sample showed larger effective area than bare NPG. Microstructure characterization demonstrated that the TiO2 nanoparticles effectively suppressed the coarsening of the nanoporous structure by the reaction with gold ligaments. The resultant porous nanocomposite with rough ligament surfaces was proofed to spontaneously possess enhanced catalytic performance towards methanol oxidation. This result would yield an effective and inexpensive method to improve NPG s catalytic activity.
- Methanol oxidation
- Nanoporous metal
- Scanning electron microscope (sem)
- Transmission electron microscope (tem)