Pulsed laser processed FeSiBCuNb glassy alloy with polyphasic nanostructure interactions for efficient degradation of reactive red 195 via photoactivating persulfate

Author Identifier

Lai Chang Zhang: https://orcid.org/0000-0003-0661-2051

Document Type

Journal Article

Publication Title

Separation and Purification Technology

Volume

354

Publisher

Elsevier

School

Centre for Advanced Materials and Manufacturing / School of Engineering

RAS ID

73849

Funders

Key Research and Development Program of China (2022YFB2404102) / National Natural Science Foundation of China (51971093, 52171158, 52101196) / Open Project Program of Shandong Marine Aerospace Equipment Technological Innovation Center (Ludong University) (MAETIC2021-11) / Key Research and Development Program of Shandong Province (2021ZLGX01, 2022CXGC020308, 2023CXGC010308)

Comments

Chen, Q., Di, H., Qi, Z., Wang, Z., Song, Z., Zhang, L. C., ... & Wang, W. (2025). Pulsed laser processed FeSiBCuNb glassy alloy with polyphasic nanostructure interactions for efficient degradation of reactive red 195 via photoactivating persulfate. Separation and Purification Technology, 354. https://doi.org/10.1016/j.seppur.2024.129256

Abstract

An Fe73.5Si13.5B9Cu1Nb3 amorphous ribbon was used as a precursor to fabricate biphasic and polyphasic nanostructure catalysts via pulsed laser processing. The enhancement in nanostructure heterogeneity, light absorption ability, surface hydrophilicity and photothermal conversion of the catalyst resulted in improving photocatalytic performance, evidenced by a higher k value, increased total organic carbon removal rate, and lower ΔE value. The degradation pathway of reactive red 195 molecules in the persulfate system was proposed. Density-functional theory simulations indicated that the excellent catalytic performance of the pulsed laser catalyst was due to its unique polyphasic nanostructure, which induced the reduction in the energy barrier of the rate-determining step (from 2.74 to 1.34 eV) during the conversion of S2O82− to SO4−•. The processed catalyst exhibited an ultrahigh catalytic ability of kSA•C0 = 7733 mg·m−2·min−1 and strong reusability (28 cycles) without efficiency decay. This study revealed that regulating the nanostructure of the catalyst is an effective strategy to achieve high photocatalytic performance.

DOI

10.1016/j.seppur.2024.129256

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