Activating Fenton-like reaction by hydrochars containing persistent free radicals derived from various pomelo peel components

作     者：Chaoyang Zhang Zili Jiang Wanxue Sun Yuyuan Tang Zhanying Zhang Changrong Shi Xiuxiu Ruan 

作者机构：School of Environmental and Chemical EngineeringShanghai UniversityNo.99 Shangda RoadShanghai 200444People’s Republic of China. Center of Green Urban Mining and Industry EcologyShanghai UniversityNo.99 Shangda RoadShanghai 200444People’s Republic of China. School of MechanicalMedical and Process EngineeringFaculty of EngineeringQueensland University of TechnologyBrisbaneQLD 4000Australia. Centre for Agriculture and the BioeconomyQueensland University of TechnologyBrisbaneQLD 4000Australia. 

出 版 物：《Biochar》 (生物炭(英文))

年 卷 期：2024年第6卷第1期

页      面：1230-1245页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070303[理学-有机化学] 0703[理学-化学] 

基　　金：supported by the National Key Research and Development Program of China(No.2020YFC1808103) Science&Technology Commission of Shanghai Municipality(No.22002400500) National Natural Science Foundation of China(20907029 and 21577085) Natural Science Fund Projects of Shanghai Municipal Science and Technology Commission(No.14ZR1415600) 

主　　题：Pomelo peel Hydrochar Environmental persistent free radicals(EPFRs) Catalysis Fenton-like BPA degradation 

摘      要：To reveal the influence of the diversity of precursors on the formation of environmental persistent free radicals(EPFRs),pomelo peel(PP)and its physically divided portion,pomelo cuticle(PC),and white fiber(WF)were used as precursors to prepare six hydrochars:PPH-Fe,PCH-Fe,WFH-Fe,PPH,PCH,and WFH with and without Fe(III)addition during hydrothermal carbonization(HTC).PPH-Fe and WFH-Fe had higher EPFRs content(9.11×10^(18)and 8.25×10^(18)spins·g^(−1))compared to PPH and WFH(3.33×10^(18)and 2.96×10^(18)spins·g^(−1)),indicating that iron-doping favored EPFRs ***,PCH-Fe had lower EPFRs content(2.78×10^(18)spins·g^(−1))than PCH(7.95×10^(18)spins·g^(−1)),possibly due to excessive iron leading to the consumption of the generated *** another reason,the required Fe(III)amount for EPFRs formation might vary among different *** has a lower concentration of phenolic compounds but 68-97%fatty acids,while WF and PP are rich in cellulose and *** the Fenton-like reaction,oxygen-centered radicals of hydrochar played a significant role in activating H_(2)O_(2)and efficiently degrading bisphenol A(BPA).Mechanisms of reactive oxygen species(ROS)generation in hydrochar/H_(2)O_(2)system were *** on hydrochar activate H_(2)O_(2)via electron transfer,creating·OH and 1O2,leading to BPA *** importantly,the embedded EPFRs on the hydrochar’s inner surface contributed to the prolonged Fenton-like reactivity of PPH-Fe stored for 45 *** study demonstrates that by optimizing precursor selection and iron doping,hydrochars can be engineered to maximize their EPFRs content and reactivity,providing a cost-effective solution for the degradation of hazardous pollutants.