双金属片
生物炭
过氧二硫酸盐
磺胺嘧啶
合金
材料科学
化学
复合材料
有机化学
催化作用
生物化学
热解
抗生素
作者
Min Zhang,Hongrong Yang,Dongye Zhao,Zhaoju Yu,Yao Ding,Zhennan Gu,L. B. Zhang
标识
DOI:10.1016/j.colsurfa.2024.134124
摘要
Sunflower seed husk is a common oil crop by-product. In this study, the husk was used as a base material for preparing a new catalyst, referred to as Fe-Cu-biochar-MOFs. The new material was characterized by multiple nanoscale metal clusters with rough surfaces and irregular shapes, thus providing abundant reactive surface area and sites. The catalytic reactivity was tested using sulfadiazine (SDZ) through batch kinetic experiments, where Fe-Cu-biochar-MOFs were used to activate peroxydisulfate (PDS). The results indicate that the system was able to degrade 95.9% of SDZ within 60 minutes. Mechanistic investigations revealed that the presence of PDS converted Fe0 to Fe2+ and Cu0 to Cu+ in the Fe-Cu-biochar-MOFs, and the resulting Fe(Ⅱ) and Cu(I) ions facilitated the activation of PDS, resulting in abundant reactive oxygen species (1O2, SO4∙− and ∙OH). This work provides a new approach of using waste agricultural by-products for the removal of environmental pollutants.
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