Synthesis of Mackinawite (FeSm) and its heterogeneous Fenton-like catalytic degradation performance of rhodamine B
In this work, Mackinawite (FeSm) was synthesized by homogeneous precipitation method, and flower-like nanoparticles formed by the aggregation of nanosheets with a preferred orientation along the (001) plane. The heterogeneous Fenton-like degradation performance of FeSm on rhodamine B (RhB) was inves...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2022-01-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/85/1/354 |
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| author | Kaili Zhang Yanli Yang Miao Xu Tiexin Cheng Guangdong Zhou |
| author_facet | Kaili Zhang Yanli Yang Miao Xu Tiexin Cheng Guangdong Zhou |
| author_sort | Kaili Zhang |
| collection | DOAJ |
| description | In this work, Mackinawite (FeSm) was synthesized by homogeneous precipitation method, and flower-like nanoparticles formed by the aggregation of nanosheets with a preferred orientation along the (001) plane. The heterogeneous Fenton-like degradation performance of FeSm on rhodamine B (RhB) was investigated, results illustrated that RhB degradation was the synergistic effect of adsorption, Fenton, and a heterogeneous Fenton-like reaction. In repeated experiments, the reduction of reactivity was attributed to the oxidation of FeSm into lepidocrocite, whereas lepidocrocite has relatively low hydroxyl radicals (•OH) production reactivity. Thus, it showed excellent degradation effects in long-time degradation of RhB. Photoluminescence technology and free radical capture experiments demonstrated that •OH produced on the surface of catalyst was the main active species to remove RhB. In addition, the Fe species on the surface of FeSm was the main active center for surface-mediated reactions. A total organic carbon test revealed that the degradation was not complete and degradation intermediates were formed. Liquid chromatography-mass spectrometry technology was used to identify the degradation intermediates. On this basis, possible degradation pathways were proposed. HIGHLIGHTS
Flower-like Mackinawite (FeSm) nanoparticles were synthesized using an homogeneous precipitation method.;
FeSm was used as an heterogeneous Fenton-like catalyst to degrade RhB.;
The reduction of FeSm reuse activity was mainly attributed to the formation of lepidocrocite with lower activity.;
•OH surface-bounded of FeSm was the main active species for RhB degradation.;
The possible degradation pathway of RhB was speculated.; |
| first_indexed | 2024-12-20T10:43:37Z |
| format | Article |
| id | doaj.art-f7b754317dee4fdfb9fab16abac984f6 |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-12-20T10:43:37Z |
| publishDate | 2022-01-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-f7b754317dee4fdfb9fab16abac984f62022-12-21T19:43:29ZengIWA PublishingWater Science and Technology0273-12231996-97322022-01-0185135436610.2166/wst.2021.616616Synthesis of Mackinawite (FeSm) and its heterogeneous Fenton-like catalytic degradation performance of rhodamine BKaili Zhang0Yanli Yang1Miao Xu2Tiexin Cheng3Guangdong Zhou4 College of Chemistry, Jilin University, Changchun, Jilin Province 130012, China College of Chemistry, Jilin University, Changchun, Jilin Province 130012, China College of Chemistry, Jilin University, Changchun, Jilin Province 130012, China College of Chemistry, Jilin University, Changchun, Jilin Province 130012, China College of Chemistry, Jilin University, Changchun, Jilin Province 130012, China In this work, Mackinawite (FeSm) was synthesized by homogeneous precipitation method, and flower-like nanoparticles formed by the aggregation of nanosheets with a preferred orientation along the (001) plane. The heterogeneous Fenton-like degradation performance of FeSm on rhodamine B (RhB) was investigated, results illustrated that RhB degradation was the synergistic effect of adsorption, Fenton, and a heterogeneous Fenton-like reaction. In repeated experiments, the reduction of reactivity was attributed to the oxidation of FeSm into lepidocrocite, whereas lepidocrocite has relatively low hydroxyl radicals (•OH) production reactivity. Thus, it showed excellent degradation effects in long-time degradation of RhB. Photoluminescence technology and free radical capture experiments demonstrated that •OH produced on the surface of catalyst was the main active species to remove RhB. In addition, the Fe species on the surface of FeSm was the main active center for surface-mediated reactions. A total organic carbon test revealed that the degradation was not complete and degradation intermediates were formed. Liquid chromatography-mass spectrometry technology was used to identify the degradation intermediates. On this basis, possible degradation pathways were proposed. HIGHLIGHTS Flower-like Mackinawite (FeSm) nanoparticles were synthesized using an homogeneous precipitation method.; FeSm was used as an heterogeneous Fenton-like catalyst to degrade RhB.; The reduction of FeSm reuse activity was mainly attributed to the formation of lepidocrocite with lower activity.; •OH surface-bounded of FeSm was the main active species for RhB degradation.; The possible degradation pathway of RhB was speculated.;http://wst.iwaponline.com/content/85/1/354degradationfesmh2o2heterogeneous fenton-like reactionhydroxyl radicalsrhb |
| spellingShingle | Kaili Zhang Yanli Yang Miao Xu Tiexin Cheng Guangdong Zhou Synthesis of Mackinawite (FeSm) and its heterogeneous Fenton-like catalytic degradation performance of rhodamine B Water Science and Technology degradation fesm h2o2 heterogeneous fenton-like reaction hydroxyl radicals rhb |
| title | Synthesis of Mackinawite (FeSm) and its heterogeneous Fenton-like catalytic degradation performance of rhodamine B |
| title_full | Synthesis of Mackinawite (FeSm) and its heterogeneous Fenton-like catalytic degradation performance of rhodamine B |
| title_fullStr | Synthesis of Mackinawite (FeSm) and its heterogeneous Fenton-like catalytic degradation performance of rhodamine B |
| title_full_unstemmed | Synthesis of Mackinawite (FeSm) and its heterogeneous Fenton-like catalytic degradation performance of rhodamine B |
| title_short | Synthesis of Mackinawite (FeSm) and its heterogeneous Fenton-like catalytic degradation performance of rhodamine B |
| title_sort | synthesis of mackinawite fesm and its heterogeneous fenton like catalytic degradation performance of rhodamine b |
| topic | degradation fesm h2o2 heterogeneous fenton-like reaction hydroxyl radicals rhb |
| url | http://wst.iwaponline.com/content/85/1/354 |
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