Pulsed laser-indued nanoscale phase transition in FePC alloy with enhancing the catalytic activity in dye wastewater degradation

Document Type

Journal Article

Publication Title

Applied Surface Science

Volume

659

Publisher

Elsevier

School

School of Engineering / Centre for Advanced Materials and Manufacturing

Funders

key research and development program of China / National Natural Science Foundation of China / Open Project Program of Shandong Marine Aerospace Equipment Technological Innovation Center (Ludong University) / key research and development program of Shandong Province

Comments

Chen, Q., Qi, Z., Wang, Z., Song, Z., Zhang, L. C., Guo, L., & Wang, W. (2024). Pulsed laser-indued nanoscale phase transition in FePC alloy with enhancing the catalytic activity in dye wastewater degradation. Applied Surface Science, 659, article 159946. https://doi.org/10.1016/j.apsusc.2024.159946

Abstract

A nanoscale heterogeneous environmental catalyst, FePC alloy, was successfully fabricated by a single-roller melt spinning technique. The prepared catalyst had a biphasic disorder structure with α-Fe nanocrystallites embedded in the amorphous matrix. The pulsed laser process effectively improved the nanoscale heterogeneity degree, thermodynamic properties, surface photothermal conversion, corrosion resistance and hydrophilicity of the catalyst. The 60 W pulsed laser processing induced the nanocrystalline Fe3P precipation in the catalyst, which is transformed from α-Fe and amorphous matrix, promoting the electron donation rate of the galvanic cell system; therefore, the 60 W pulsed laser processed catalyst exhibited an excellent catalytic performance, such as a high k value, strong TOC removal rate and low activation energy. In addition, compared with other oxide, metallic crystal and metallic glass catalysts, this catalyst exhibited a much higher surface area-normalized rate constant kSA. The reusability test showed that this catalyst exhibited a reliable stability, and its decolorization efficiency at the 20th cycle still remained above 95 %; moreover, the parameter analysis showed that it had a strong adaptability in the persulfate system. This study provides a new strategy for designing and fabricating the efficient, low-cost and environmental catalysts for dye wastewater degradation.

DOI

10.1016/j.apsusc.2024.159946

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