Efficient Destruction of Humic Acid Driven by the Surface Complex in Imitating Aerobic Microbial Fe0-Feycz/Fex-Gzif-8-Rgo Aqueous Suspension

Natural organic matter (NOM) has diverse negative impacts on water purification, however, preventing them occurrence very difficultly. Herein, humic acid, as main component of NOM, is completely destructed and mineralized in Fe 0-FeyCz/Fex-GZIF-8-rGO aqueous suspension with O2 as electron acceptor, which is similar to the aerobic microbial treatment process. The mineralization rate constant and •OH production after 120 min are 1.7-fold and 4.4-fold higher than before. In the process, a strongly polar alkane-alcohol complex forms with electron-rich hydroxyl group of alcohol. With adsorption of the alkane-alcohol complex on the catalyst surface, the more electrons of alkane in complex are delocalized and trapped by O2 , resulting its surface cleavage and hydrolytic process, producing more •OH for pollutant degradation than that from the HA surface complex. Our findings demonstrated that the current system is very promising for complex mixtures-containing water purification without additional energy