{"title":"从废塑料中一步合成掺杂 N 的磁性碳纳米管，有效去除 Cr(Ⅵ)","authors":"Song Cheng , Xiangwang Zeng , Peng Liu","doi":"10.1016/j.arabjc.2024.105956","DOIUrl":null,"url":null,"abstract":"<div><p>The magnetic nitrogen-doped carbon nanotube is prepared by one-pot using waste plastics as feedstock in the existence of the urea and Fe(NO<sub>3</sub>)<sub>3</sub> for Cr(Ⅵ) removal form wastewater. The characterization analysis indicates that the nitrogen is successfully doped on the magnetic nitrogen-doped carbon nanotube with specific surface area of the 158.71 m<sup>2</sup>/g and saturation magnetization of the 36.47 emu g<sup>−1</sup>. The existence of the nitrogen group and Fe<sub>3</sub>C contributes to Cr(Ⅵ) removal by complexation and reduction with adsorption capacity of the 27.47 mg g<sup>−1</sup>. The adsorption data is fitting well with the Pseudo-second order model, demonstrating chemisorption of Cr(Ⅵ). The Cr(Ⅵ) removal mechanism analysis indicates that Fe<sup>0</sup>, Fe<sup>2+</sup>, H*, oxygen-containing group and nitrogen-containing group are crucial to Cr(Ⅵ) removal. The key mechanism of the enhanced Cr (VI) removal is the reductive capacity by dissolved Fe<sup>2+</sup>, which accounts for 23.6 % of the overall Cr(VI) removal. The magnetic nitrogen-doped carbon nanotube is prepared from waste plastic for Cr (VI) removal from wastewater.</p></div>","PeriodicalId":249,"journal":{"name":"Arabian Journal of Chemistry","volume":"17 10","pages":"Article 105956"},"PeriodicalIF":5.3000,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1878535224003587/pdfft?md5=db9735a4f3aac9da5f9d26d05f7df743&pid=1-s2.0-S1878535224003587-main.pdf","citationCount":"0","resultStr":"{\"title\":\"One-step synthesis of magnetic N-doped carbon nanotubes derived from waste plastics for effective Cr(Ⅵ) removal\",\"authors\":\"Song Cheng , Xiangwang Zeng , Peng Liu\",\"doi\":\"10.1016/j.arabjc.2024.105956\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The magnetic nitrogen-doped carbon nanotube is prepared by one-pot using waste plastics as feedstock in the existence of the urea and Fe(NO<sub>3</sub>)<sub>3</sub> for Cr(Ⅵ) removal form wastewater. The characterization analysis indicates that the nitrogen is successfully doped on the magnetic nitrogen-doped carbon nanotube with specific surface area of the 158.71 m<sup>2</sup>/g and saturation magnetization of the 36.47 emu g<sup>−1</sup>. The existence of the nitrogen group and Fe<sub>3</sub>C contributes to Cr(Ⅵ) removal by complexation and reduction with adsorption capacity of the 27.47 mg g<sup>−1</sup>. The adsorption data is fitting well with the Pseudo-second order model, demonstrating chemisorption of Cr(Ⅵ). The Cr(Ⅵ) removal mechanism analysis indicates that Fe<sup>0</sup>, Fe<sup>2+</sup>, H*, oxygen-containing group and nitrogen-containing group are crucial to Cr(Ⅵ) removal. The key mechanism of the enhanced Cr (VI) removal is the reductive capacity by dissolved Fe<sup>2+</sup>, which accounts for 23.6 % of the overall Cr(VI) removal. The magnetic nitrogen-doped carbon nanotube is prepared from waste plastic for Cr (VI) removal from wastewater.</p></div>\",\"PeriodicalId\":249,\"journal\":{\"name\":\"Arabian Journal of Chemistry\",\"volume\":\"17 10\",\"pages\":\"Article 105956\"},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2024-08-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S1878535224003587/pdfft?md5=db9735a4f3aac9da5f9d26d05f7df743&pid=1-s2.0-S1878535224003587-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Arabian Journal of Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1878535224003587\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Arabian Journal of Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1878535224003587","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
One-step synthesis of magnetic N-doped carbon nanotubes derived from waste plastics for effective Cr(Ⅵ) removal
The magnetic nitrogen-doped carbon nanotube is prepared by one-pot using waste plastics as feedstock in the existence of the urea and Fe(NO3)3 for Cr(Ⅵ) removal form wastewater. The characterization analysis indicates that the nitrogen is successfully doped on the magnetic nitrogen-doped carbon nanotube with specific surface area of the 158.71 m2/g and saturation magnetization of the 36.47 emu g−1. The existence of the nitrogen group and Fe3C contributes to Cr(Ⅵ) removal by complexation and reduction with adsorption capacity of the 27.47 mg g−1. The adsorption data is fitting well with the Pseudo-second order model, demonstrating chemisorption of Cr(Ⅵ). The Cr(Ⅵ) removal mechanism analysis indicates that Fe0, Fe2+, H*, oxygen-containing group and nitrogen-containing group are crucial to Cr(Ⅵ) removal. The key mechanism of the enhanced Cr (VI) removal is the reductive capacity by dissolved Fe2+, which accounts for 23.6 % of the overall Cr(VI) removal. The magnetic nitrogen-doped carbon nanotube is prepared from waste plastic for Cr (VI) removal from wastewater.
期刊介绍：
The Arabian Journal of Chemistry is an English language, peer-reviewed scholarly publication in the area of chemistry. The Arabian Journal of Chemistry publishes original papers, reviews and short reports on, but not limited to: inorganic, physical, organic, analytical and biochemistry.
The Arabian Journal of Chemistry is issued by the Arab Union of Chemists and is published by King Saud University together with the Saudi Chemical Society in collaboration with Elsevier and is edited by an international group of eminent researchers.
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