Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1599986 | Intermetallics | 2014 | 6 Pages |
Abstract
Nanoporous Cu with tunable pore size (20-50Â nm) are synthesized through chemical dealloying of the Mg65Cu25Gd10 metallic glass in sulfuric acid solution. X-ray diffraction (XRD) and scanning electron microscopy (SEM) demonstrated the formation of mixing structures consisting of amorphous matrix and fcc-Cu ligaments with nanoporous structure in the dealloyed samples. The nanoporous alloy obtained shows superior catalytic activity in degrading phenol-containing wastewater, e.g., the degradation rate increases by 2-4 times as compared to the un-dealloyed Mg-based metallic glass. It was also found that surface wettability plays an important role in degradation, which results in a better catalytic performance in the sample with coarser nanoporous structure although it has relatively less specific surface area as compared to the samples with finer pores. Finally, the mechanism for degradation of phenol is discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Zhen Deng, Cheng Zhang, Lin Liu,