1. Facile Synthesis of Highly Porous Metal Oxides by Mechanochemical Nanocasting
- Author
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Peiwen Wu, Pengfei Zhang, Peipei Li, Ning Zhang, Caili Huang, Shize Yang, Nanqing Chen, Kecheng Jie, Meijun Li, Weiming Xiao, and Sheng Dai
- Subjects
Porous metal ,Materials science ,General Chemical Engineering ,Oxide ,02 engineering and technology ,General Chemistry ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Catalysis ,Metal ,Nanopore ,chemistry.chemical_compound ,chemistry ,Chemical engineering ,visual_art ,Highly porous ,Materials Chemistry ,visual_art.visual_art_medium ,0210 nano-technology ,Porosity ,Ball mill - Abstract
Metal oxides with high porosity usually exhibit better performance in many applications, as compared with the corresponding bulk materials. Template-assisted method is generally employed to prepare porous metal oxides. However, the template-assisted method is commonly operated in wet conditions, which requires solvents, soluble metal oxide precursors, and a long time for drying. To overwhelm those drawbacks of the wet procedure, a mechanochemical nanocasting method is developed in the current work. Inspired by solid-state synthesis, this strategy proceeds without solvents, and the ball milling process can enable pores replicated in a shorter time (60 min). By this method, a series of highly porous metal oxides were obtained, with several cases approaching the corresponding surface area records (e.g., ZrO2, 293 m2 g–1; Fe2O3, 163 m2 g–1; CeO2, 211 m2 g–1; CuOx-CeOy catalyst, 237 m2 g–1; CuOx-CoOy-CeOz catalyst, 203 m2 g–1). Abundant nanopores with clear lattice fringes in metal oxide products were witnesse...
- Published
- 2018