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SiO2@nZVI@Fe3O4 composites were successfully synthesized by liquid-phase reduction and stőber hydrolysis. The microstructures and physical phase compositions of SiO2@nZVI@Fe3O4 were analyzed by SEM-EDS, TEM, XRD, FTIR, VSM, and XPS. The degradation performance of azo dyes was investigated by using SiO2@nZVI@Fe3O4 as a non-homogeneous catalyst combined with H2O2to construct a Fenton-like system. The results showed that the SiO2 coating improved the dispersion and oxidation resistance of nZVI@Fe3O4, and it was able to enhance the generation of Fe2+ and HO· in the Fenton-like reaction system. Under the conditions of 25℃, pH 3, H2O2 concentration of 15mmol/L, and material dosage of 0.6g/L, the removal efficiency of Congo red, Orange II and Acid Black 210 reached 99.68 %、98.14 % and 99.35 %. The composite material could still remove more than 79% of the three pollutants after recycling for three times, which has good stable catalytic performance. The removal of azo dyes by SiO2@nZVI@Fe3O4 combined with Fenton-like system was mainly through the reduction of nZVI and the oxidation of HO·, as demonstrated by reactive oxygen species quenching experiment and UV-visible spectral analysis.

, authors=Jin-kui ZHONG1, 2, *, Jia-wen HE1, Xin-hao WANG1, Yin ZHANG1, Yuan-hu GAO1, Cai-ya ZHU1, Xin-yue ZHOU1, Si-qian WANG1, authorsList=Jin-kui ZHONG, Jia-wen HE, Xin-hao WANG, Yin ZHANG, Yuan-hu GAO, Cai-ya ZHU, Xin-yue ZHOU, Si-qian WANG, authorCompany=null, correspAuthors=Jin-kui ZHONG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1314917783373185890, articleId=1314917781284422494, tenantId=1146029695717560320, journalId=1234093305789726721, language=CN, title=SiO2包覆nZVI@Fe3O4类Fenton体系对偶氮染料的降解, columnId=1234106386565624579, journalTitle=中国环境科学, columnName=水污染与控制, runingTitle=null, highlight=null, articleAbstract=

通过液相还原法和stőber水解法合成了SiO2@nZVI@Fe3O4复合材料,并采用SEM-EDS、TEM、XRD、FTIR、VSM和XPS对其微观结构和物相组成进行了分析和表征.以SiO2@nZVI@Fe3O4为非均相催化剂与H2O2耦合构建类Fenton体系,考察该体系对偶氮类染料的降解性能.结果表明,SiO2包覆后nZVI@Fe3O4复合材料的分散性和抗氧化性得到提高,由其构建的类Fenton反应体系能促进Fe2+和HO·的生成.在25℃,pH3,H2O2浓度为15mmol/L,材料投加量为0.6g/L的条件下,刚果红、橙黄Ⅱ和酸性黑210的去除率分别为99.68%、98.14%和99.35%.复合材料在循环利用3次后对3种污染物的去除率仍保持在79%以上,表明SiO2@nZVI@Fe3O4材料具有良好的稳定催化性能.活性氧物种淬灭实验和紫外-可见光谱分析表明,SiO2@nZVI@Fe3O4类Fenton体系对偶氮染料的去除机理主要是通过nZVI的还原作用和HO·的氧化作用.

, authors=钟金魁1, 2, *, 何嘉文1, 王新昊1, 张尹1, 高原虎1, 朱彩亚1, 周鑫悦1, 王思倩1, authorsList=钟金魁, 何嘉文, 王新昊, 张尹, 高原虎, 朱彩亚, 周鑫悦, 王思倩, authorCompany=null, correspAuthors=钟金魁, authorNote=

钟金魁(1968-),男,甘肃古浪人,教授,硕士,主要从事土壤污染修复和污水处理研究.发表论文44篇..

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钟金魁(1968-),男,甘肃古浪人,教授,硕士,主要从事土壤污染修复和污水处理研究.发表论文44篇..

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钟金魁(1968-),男,甘肃古浪人,教授,硕士,主要从事土壤污染修复和污水处理研究.发表论文44篇..

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SiO2包覆nZVI@Fe3O4类Fenton体系对偶氮染料的降解
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钟金魁 1, 2, * , 何嘉文 1 , 王新昊 1 , 张尹 1 , 高原虎 1 , 朱彩亚 1 , 周鑫悦 1 , 王思倩 1
中国环境科学 | 水污染与控制 2025,45(8): 4341-4353
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中国环境科学 |水污染与控制 2025 , 45 (8) : 4341 -4353
SiO2包覆nZVI@Fe3O4类Fenton体系对偶氮染料的降解
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钟金魁(1968-),男,甘肃古浪人,教授,硕士,主要从事土壤污染修复和污水处理研究.发表论文44篇..

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钟金魁(1968-),男,甘肃古浪人,教授,硕士,主要从事土壤污染修复和污水处理研究.发表论文44篇..

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钟金魁1, 2, * , 何嘉文1, 王新昊1, 张尹1, 高原虎1, 朱彩亚1, 周鑫悦1, 王思倩1
作者信息
  • 1.兰州交通大学环境与市政工程学院,甘肃 兰州 730070
  • 2.寒旱地区水资源综合利用教育部工程研究中心,甘肃 兰州 730070
通讯作者:
* 通讯作者,教授,
作者简介:

钟金魁(1968-),男,甘肃古浪人,教授,硕士,主要从事土壤污染修复和污水处理研究.发表论文44篇..

Degradation of azo dyes in sio2coated nzvi@Fe3O4 Fenton-like system
Jin-kui ZHONG1, 2, * , Jia-wen HE1, Xin-hao WANG1, Yin ZHANG1, Yuan-hu GAO1, Cai-ya ZHU1, Xin-yue ZHOU1, Si-qian WANG1
Affiliations
  • 1.School of Environmental and Municipal Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China
  • 2.Ministry of Education Engineering Research Center of Water Resource Comprehensive Utilization in Cold and Arid Regions, Lanzhou 730070, China
出版时间: 2025-08-20
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通过液相还原法和stőber水解法合成了SiO2@nZVI@Fe3O4复合材料,并采用SEM-EDS、TEM、XRD、FTIR、VSM和XPS对其微观结构和物相组成进行了分析和表征.以SiO2@nZVI@Fe3O4为非均相催化剂与H2O2耦合构建类Fenton体系,考察该体系对偶氮类染料的降解性能.结果表明,SiO2包覆后nZVI@Fe3O4复合材料的分散性和抗氧化性得到提高,由其构建的类Fenton反应体系能促进Fe2+和HO·的生成.在25℃,pH3,H2O2浓度为15mmol/L,材料投加量为0.6g/L的条件下,刚果红、橙黄Ⅱ和酸性黑210的去除率分别为99.68%、98.14%和99.35%.复合材料在循环利用3次后对3种污染物的去除率仍保持在79%以上,表明SiO2@nZVI@Fe3O4材料具有良好的稳定催化性能.活性氧物种淬灭实验和紫外-可见光谱分析表明,SiO2@nZVI@Fe3O4类Fenton体系对偶氮染料的去除机理主要是通过nZVI的还原作用和HO·的氧化作用.

nZVI@Fe3O4  /  SiO2包覆  /  类Fenton  /  偶氮染料  /  降解

SiO2@nZVI@Fe3O4 composites were successfully synthesized by liquid-phase reduction and stőber hydrolysis. The microstructures and physical phase compositions of SiO2@nZVI@Fe3O4 were analyzed by SEM-EDS, TEM, XRD, FTIR, VSM, and XPS. The degradation performance of azo dyes was investigated by using SiO2@nZVI@Fe3O4 as a non-homogeneous catalyst combined with H2O2to construct a Fenton-like system. The results showed that the SiO2 coating improved the dispersion and oxidation resistance of nZVI@Fe3O4, and it was able to enhance the generation of Fe2+ and HO· in the Fenton-like reaction system. Under the conditions of 25℃, pH 3, H2O2 concentration of 15mmol/L, and material dosage of 0.6g/L, the removal efficiency of Congo red, Orange II and Acid Black 210 reached 99.68 %、98.14 % and 99.35 %. The composite material could still remove more than 79% of the three pollutants after recycling for three times, which has good stable catalytic performance. The removal of azo dyes by SiO2@nZVI@Fe3O4 combined with Fenton-like system was mainly through the reduction of nZVI and the oxidation of HO·, as demonstrated by reactive oxygen species quenching experiment and UV-visible spectral analysis.

nZVI@Fe3O4  /  SiO2 coating  /  Fenton-like  /  azo dyes  /  degradation mechanism
钟金魁, 何嘉文, 王新昊, 张尹, 高原虎, 朱彩亚, 周鑫悦, 王思倩. SiO2包覆nZVI@Fe3O4类Fenton体系对偶氮染料的降解. 中国环境科学, 2025 , 45 (8) : 4341 -4353 .
Jin-kui ZHONG, Jia-wen HE, Xin-hao WANG, Yin ZHANG, Yuan-hu GAO, Cai-ya ZHU, Xin-yue ZHOU, Si-qian WANG. Degradation of azo dyes in sio2coated nzvi@Fe3O4 Fenton-like system[J]. China Environmental Science, 2025 , 45 (8) : 4341 -4353 .
  • 国家自然科学基金资助项目(22166022)
  • 甘肃省科技计划项目(20JR2RA002)
  • 兰州交通大学创新创业项目(DC2510732CX0874)
  • 高校科研创新平台重大培育项目(2024CXPT-14)
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2025年第45卷第8期
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  • 接收时间:2025-01-22
  • 首发时间:2026-10-08
  • 出版时间:2025-08-20
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  • 收稿日期:2025-01-22
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国家自然科学基金资助项目(22166022)
甘肃省科技计划项目(20JR2RA002)
兰州交通大学创新创业项目(DC2510732CX0874)
高校科研创新平台重大培育项目(2024CXPT-14)
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    1.兰州交通大学环境与市政工程学院,甘肃 兰州 730070
    2.寒旱地区水资源综合利用教育部工程研究中心,甘肃 兰州 730070

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2种不同金属材料的力学参数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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