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.
Fe-based Amorphous Alloy was widely concerned in the field of wastewater treatment because of its nanoporous structure, which has higher reactivity activity. However, as it is easy to get Oxidative poisoning, its long-term reactivity activity is restricted. A uniform nanoporous layer has been synthesized by mechanical attrition and dealloying on the surface of Fe76Si9B10P5 amorphous alloy powders in this work. In the test of catalytic performance, due to nanoporous structure, Fe0/FeⅡ/FeⅢ are involved in the Fenton process at the same time. The Fenton reaction was further catalyzed to generate more active group ·OH; therefore, the degradation rate reaches 99.8% within 60 minutes. Using this tunable pretreatment method for surface activation, novel applications for metallic glasses can be developed.
As excellent materials, high-entropy alloys have excellent mechanical properties, wear resistance, oxidation resistance, corrosion resistance, physical properties, and radiation resistance. The present work presents the design and preparation of a novel high-entropy alloys based on the BCC structure, added with lanthanum, and shows excellent performance in catalytic hydrogen production from boron ammonia. The high-entropy alloys catalyst being able to catalyse the complete release of hydrogen in 1.3 min at 323K, the value of turnover frequency (TOF) value as high as 5638 h-1. The value of apparent activation energy (Ea) can reach 30.45 kJ/mol. It retains good catalytic performance after 10 cycles of catalytic hydrogen production from equivalent amounts of boron ammonia at 303K. In this work, a new strategy for improving the performance of transition group high-entropy alloys is presented and the potential energy and environmental benefits of these alloys are demonstrated.
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