Abstract
Fe-based amorphous alloys have shown great potential in degrading azo dyes and other organic pollutants. It has been widely investigated as a kind of environmentally friendly material for wastewater remediation. In this paper, we studied the effect of Ni addition on the catalytic performance of Fe87Si5B2P3Nb2Cu1 amorphous alloy for degradation of methylene blue dyes and analyzed the reaction mechanism. (Fe87Si5B2P3Nb2Cu1)86Ni14 amorphous powder with desirable performance was produced by specific ball milling durations. Characterization of the Fe87Si5B2P3Nb2Cu1 and (Fe87Si5B2P3Nb2Cu1)86Ni14 amorphous alloys prepared by ball milling was performed by XRD and SEM. Fe87Si5B2P3Nb2Cu1 and (Fe87Si5B2P3Nb2Cu1)86Ni14 amorphous alloys were used as catalysts to catalyze the degradation of methylene blue dyes, which were detected by UV-VIS near-infrared spectrophotometer. By a series of comparative experiments, it was found that a catalyst dosage of 0.2 g and a reaction temperature of 80 °C were conditions that produced the best catalytic effect. The degradation rate of (Fe87Si5B2P3Nb2Cu1)86Ni14 amorphous alloy to methylene blue dyes prepared by ball milling increased from 67.76% to 99.99% compared with the Fe87Si5B2P3Nb2Cu1 amorphous alloy under the same conditions.
Highlights
Industrial wastewater usually contains dye pollutants, which are introduced in the early stages of some production processes
The catalytic degradation performance of Co-based amorphous powders prepared by ball milling on Acid Orange II solution was studied, and the degradation rate was over 99% [23,26]
Si, B, P, Nb, and Cu with a purity of 99 wt. % were used as raw materials, and the alloy ingot was inductively smelted under the protection of N2 gas, and the Fe87 Si5 B2 P3 Nb2 Cu1 amorphous powder was sprayed by gas atomization
Summary
Industrial wastewater usually contains dye pollutants, which are introduced in the early stages of some production processes. Quite different from crystalline metals, amorphous alloys are solid materials with thermodynamic non-equilibrium characteristics, metastable properties, and disordered atomic arrangement These peculiarities make metallic glasses excellent catalysts. Fe-based metallic glasses, which have great potential in degrading azo dyes and other organic pollutants, have been widely studied as an environmentally friendly wastewater repairing material [6,7,8]. In the amorphous alloys used for azo dye degradation, Fe-based amorphous alloys are easy to be recycled and have good degradation efficiency decay due to their superior soft magnetic property and chemical stability. The catalytic degradation performance of Co-based amorphous powders prepared by ball milling on Acid Orange II solution was studied, and the degradation rate was over 99% [23,26]. We calculated the degradation rate of the reaction and studied the kinetics of the reaction, which proved that the addition of Ni micron powder greatly improved the catalytic performance of iron-based amorphous alloy
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