摘要
FeSiB metallic glass using pulsed laser processing is proved to show excellent catalytic performance in wastewater treatment for the first time by decolorizing and mineralizing reactive red 195.Pulsed laser can effectively im prove the thermodynamic properties,surface photothermal conversion and hydrophilicity of catalyst.Compared with homogeneous FeSiB catalyst,heterogeneityα-Fe/FeSiB exhibits a high k value,strong TOC removal rate and low activation energy.Theoretical calculations indicate that the excellent catalytic performance of heterogeneity catalyst is attributed to its unique nanoscale biphasic disorder structure,resulting the energy barrier of the rate-determining-steps of the conversion of S_(2)O_(8)^(2−)to SO_(4)^(−•)is reduced from 2.20 to 1.52 eV.The reusability test of heterogeneity catalyst also shows that the abnormal recovery phenomenon of decolorization efficiency at the 19th cycle owing to its unique selfrenewing.This study reveals that a nanoscale biphasic disorder structure is a new strategy for obtaining high catalytic rate and durability.
基金
financially supported by the key research and development program of China(No.2022YFB2404102)
the National Natural Science Foundation of China(Nos.51971093,52171158 and 52101196)
the Open Project Program of Shandong Marine Aerospace Equipment Technological Innovation Center(Ludong University)(No.MAETIC2021–11)
the key research and development program of Shandong Province(Nos.2021ZLGX01 and 2022CXGC020308,2023CXGC010308).
