Evolution and Performance of Porous Structure on the Surface of Fe₇₆Si_7.2B_9.6P_7.2 Amorphous Ribbon

Abstract:

Porous structures with enhanced specific surface area exhibit higher catalytic activity than the bulk counterpart. In this work, the porous structures with tunable pore size are synthesized through chemical dealloying of the Fe₇₆Si_7.2B_9.6P_7.2 amorphous alloys in corrosion solution. Meanwhile, under the effect of ultrasound-assistance, the distribution of porous and composition are uniform on the amorphous alloys. X-ray diffraction demonstrated that the amorphous structure has not been corrupted or tampered in the dealloyed samples. It was also found that the porous alloy shows superior catalytic activity in degrading phenol-containing wastewater, the degradation rate significantly increases as compared to the un-dealloyed Fe₇₆Si_7.2B_9.6P_7.2 amorphous alloys. Finally, the formation mechanism of porous structure is discussed.

• Periodical: Materials Science Forum (Volume 898)
• Pages: 653-656
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.898.653
• Online since: June 2017
• Authors: Bing Ying Ni*, Zhan Kui Zhao
• Keywords: Catalytic Efficiency, Dealloying, Fe-Based Amorphous Alloys, Porous Structure

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