Highly efficient catalytic performance and self-renewing behavior of Fe-based glass induced by pulsed laser  

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作  者:Qi Chen Haoxiang Di Zhigang Qi Zhaoxuan Wang Ziqi Song Lai-Chang Zhang Lingyu Guo Weimin Wang 

机构地区:[1]Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education),School of Materials Science and Engineering,Shandong University,Jinan 250061,China [2]School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China [3]School of Chemical Engineering and Light Industry,Guangdong University of Technology,Guangzhou 529599,China [4]Centre for Advanced Materials and Manufacturing,School of Engineering,Edith Cowan University,Joondalup WA6027,Australia

出  处:《Journal of Materials Science & Technology》2024年第21期191-201,共11页材料科学技术(英文版)

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).

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.

关 键 词:FeSiB glass Pulsed laser Nanoscale heterogeneity Energy barrier 

分 类 号:O64[理学—物理化学]

 

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