Loading...
Please wait, while we are loading the content...
Similar Documents
Synthesis of ZnO-CuO Nanocomposite Aerogels by the Sol-Gel Route
| Content Provider | Semantic Scholar |
|---|---|
| Author | Allaf, Rula M. Hope-Weeks, Louisa J. |
| Copyright Year | 2015 |
| Abstract | The epoxide addition sol-gel method has been utilized to synthesize porous zinc-copper composite aerogels in the zinc-to-copper molar ratios of 50 : 50 to 90 : 10. A two-step mixing approach has been employed to produce aerogels composed of nanoto micrometer sized particles. The aerogels were characterized by ultrahigh resolution scanning electron microscopy, transmission electron microscopy, and powder X-ray diffraction. The as-synthesized aerogels had a thin flakeor petal-like microstructure comprised of clustered flakes on two size scales; they were identified as being crystalline with the crystalline species identified as copper nitrate hydroxide, zinc hydroxide chloride hydrate, and zinc hydroxide nitrate hydrate. Annealing of the aerogel materials at a relatively low temperature (400C) resulted in a complete phase transition of the material to give highly crystalline ZnOCuO aerogels; the aerogels consisted of networked nanoparticles in the ∼25–550 nm size range with an average crystallite size of ∼3 nm and average crystallinity of 98%. ZnO-CuO aerogels are of particular interest due to their particular catalytic and sensing properties.This work emphasizes the versatility of this sol-gel route in synthesizing aerogels; this method offers a possible route for the fabrication of aerogels of different metal oxides and their composites. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://downloads.hindawi.com/journals/jnm/2014/491817.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
