文献类型：期刊文献

英文题名：Acid leaching-enhanced iron and nitrogen co-doped carbocatalysts for peroxydisulfate activation: Promoting phenol removal via polymerization

作者：Wang, Luo[1];Xu, Jiayi[1];Zhang, Wei[1];Wang, Xiaochong[1,2];Shao, Wenli[1];Lin, Mingyue[1];Murayama, Toru[3];Xiu, Guangli[1]

机构：[1]East China Univ Sci & Technol, Key Lab Environm Risk Assessment & Control Chem Pr, Minist Ecol & Environm, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[3]Hokkaido Univ, Inst Catalysis, Kita21,Nishi10,Kita-ku, Sapporo, Hokkaido 0010021, Japan

年份：2026

卷号：543

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20262620986600);WOS:【SCI-EXPANDED(收录号:WOS:001811133000003)】；

基金：This work was supported by the National Natural Science Foundation of China [No. 52570077] and the Natural Science Foundation of Shanghai [No. 25ZR1401092] . The authors also acknowledge the sup-port from the Joint Usage/Research Center for Catalysis.

语种：英文

外文关键词：Acid leaching; Carbocatalyst; Metal organic frameworks; Peroxydisulfate; Polymerization

摘要：A metal-organic framework-derived Fe/N co-doped carbocatalyst (ac-FeCN-800) was synthesized via pyrolysis followed by acid leaching and applied for peroxydisulfate (PDS) activation to remove phenol from water through a polymerization pathway. The ac-FeCN-800/PDS system achieved over 99.1% phenol removal within 30 min under near-neutral conditions (0.09 g/L catalyst, 0.25 mM PDS, initial pH 7.3), with a notable electron utilization efficiency of 526%. The results of catalyst material characterization, ROS identification, and electrochemical measurements consistently demonstrate that ac-FeCN-800 activates PDS via an electron transfermediated polymerization mechanism, rather than through radical or other non-radical pathways. The remarkable enhancement in phenol removal after acid leaching of the 800 degrees C-pyrolyzed carbocatalyst can be attributed to four synergistic factors: (i) enlarged pore structure that ensures efficient mass transfer of reactants; (ii) removal of surface iron oxides, which exposes the conductive carbon network and thus accelerates electron transfer; (iii) reduced size of Fe-containing particles, which disperses active sites and increases their accessibility; and (iv) preservation of abundant active sites (Fe-N, Fe3C, and C--O groups), which sustains high catalytic activity. Moreover, the incorporation of Fe species promotes the formation of polymers with a higher degree of polymerization, further contributing to the favorable performance. The ac-FeCN-800/PDS system also exhibits strong environmental adaptability and good regenerability, highlighting its potential for sustainable water remediation. Beyond demonstrating an efficient polymerization-based pollutant removal method for water treatment, this work opens new avenues for the design of MOF-derived carbocatalysts toward sustainable pollution control.