文献类型：期刊文献

英文题名：0D/3D coupling of g-C3N4 QDs/hierarchical macro-mesoporous CuO-SiO2 for high-efficiency norfloxacin removal in photo-Fenton-like processes

作者：Tian, Yunhao[1];Jia, Nan[1];Ma, Hui[1];Liu, Geying[1];Xiao, Zhibin[1];Wu, Yizhou[1];Zhou, Liang[1];Lei, Juying[1,2];Wang, Lingzhi[3,4,5];Liu, Yongdi[1,2];Zhang, Jinlong[3,4,5]

机构：[1]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Sch Resources & Environm Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[3]East China Univ Sci & Technol, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China;[4]East China Univ Sci & Technol, Inst Fine Chem, 130 Meilong Rd, Shanghai 200237, Peoples R China;[5]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalys, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2021

卷号：419

外文期刊名：JOURNAL OF HAZARDOUS MATERIALS

收录：;EI(收录号：20212610549114);WOS:【SCI-EXPANDED(收录号:WOS:000696979500002)】；

基金：This work was financially supported by the National Key Research and Development Program (2016YFA0204200) , the National Natural Science Foundation of China (21777044, 22076046) , the Science and Technology Commission of Shanghai Municipality (19ZR1472400, 19230711300, 20DZ2250400) and the Fundamental Research Funds for the Central Universities (222201818014 and 50321022017009) .

语种：英文

外文关键词：Photo-Fenton-like reaction; Antibiotics degradation; g-C3N4 quantum dots; Reactive oxygen species; Hierarchical macro-mesoporous CuO-SiO2

摘要：Photo-Fenton process is an advanced oxidation technology, which is used to eliminate organic pollutants in environmental pollution. In this paper, g-C3N4 quantum dots incorporated hierarchical macro-mesoporous CuOSiO2 (MM SC-QDs) composite was successfully fabricated by a dual-template method combined with polystyrene sphere (PS) crystal and copolymer F127. With the presence of H2O2, MM SC-QDs exhibited excellent degradation performance against the antibiotic pollutant norfloxacin (NOR) under visible-light assisted heterogeneous Fenton process at neutral condition, which was 27 times higher than that of the Bulk CuO-SiO2. Interconnected macropores, together with abundant mesopores effectively expand specific surface area and improve mass transfer. In addition, the g-C3N4 QDs served as the separation center for photogenerated charges, promoting the separation and migration of the charge carriers. Wherein, the long-lived photogenerated electrons were effectively separated and transferred to the surface of CuO-SiO2, which accelerated the reduction rate of Cu2+ to Cu+, enhancing the photo-Fenton-like catalytic activity. This stable, efficient, and environmentally friendly Cu-based heterogeneous photo-Fenton-like catalyst is expected to become an effective implementation in organic pollution removal. Meanwhile, this paper proves that Cu-based materials can activate H2O2 to generate singlet oxygen (O-1(2)) for the degradation of organic pollutants. The transformation mechanism of O-1(2) was clarified, which is helpful to better understand the Fenton-like reaction process of Cu-based materials.