Faisal Budiman , Tan Wai Kian , Khairunisak Abdul Razak , Atsunori Matsuda , Zainovia Lockman
{"title":"水蒸气中铁的热氧化合成氧化铁纳米片和纳米线去除Cr(VI)的效果评价","authors":"Faisal Budiman , Tan Wai Kian , Khairunisak Abdul Razak , Atsunori Matsuda , Zainovia Lockman","doi":"10.1016/j.proche.2016.03.057","DOIUrl":null,"url":null,"abstract":"<div><p>In this work, iron oxide nanosheets (NSs) and nanowires (NWs) were fabricated by thermal oxidation of iron foils at 500 and 800<!--> <!-->°C in the presence of water vapour. Oxidation resulted in multi-scale oxide with the surface oxide comprising of α-Fe<sub>2</sub>O<sub>3</sub> and inner oxide comprising of mostly Fe<sub>3</sub>O<sub>4</sub>. The mechanism of formation is discussed to be based on stress-driven mechanism and diffusion paths of iron ions. It was found that the NSs formed could adsorb 112<!--> <!-->mg/L aqueous Cr(VI) and the NWs could adsorb 200<!--> <!-->mg/L of Cr(VI). It is suggested that the Cr(VI) removal by the iron oxide NSs/NWs due to the electrostatic reaction between the adsorbent and adsorbate.</p></div>","PeriodicalId":20431,"journal":{"name":"Procedia Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2016-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.proche.2016.03.057","citationCount":"16","resultStr":"{\"title\":\"The Assessment of Cr(VI) Removal by Iron Oxide Nanosheets and Nanowires Synthesized by Thermal Oxidation of Iron in Water Vapour\",\"authors\":\"Faisal Budiman , Tan Wai Kian , Khairunisak Abdul Razak , Atsunori Matsuda , Zainovia Lockman\",\"doi\":\"10.1016/j.proche.2016.03.057\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this work, iron oxide nanosheets (NSs) and nanowires (NWs) were fabricated by thermal oxidation of iron foils at 500 and 800<!--> <!-->°C in the presence of water vapour. Oxidation resulted in multi-scale oxide with the surface oxide comprising of α-Fe<sub>2</sub>O<sub>3</sub> and inner oxide comprising of mostly Fe<sub>3</sub>O<sub>4</sub>. The mechanism of formation is discussed to be based on stress-driven mechanism and diffusion paths of iron ions. It was found that the NSs formed could adsorb 112<!--> <!-->mg/L aqueous Cr(VI) and the NWs could adsorb 200<!--> <!-->mg/L of Cr(VI). It is suggested that the Cr(VI) removal by the iron oxide NSs/NWs due to the electrostatic reaction between the adsorbent and adsorbate.</p></div>\",\"PeriodicalId\":20431,\"journal\":{\"name\":\"Procedia Chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/j.proche.2016.03.057\",\"citationCount\":\"16\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Procedia Chemistry\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1876619616001030\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Procedia Chemistry","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1876619616001030","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The Assessment of Cr(VI) Removal by Iron Oxide Nanosheets and Nanowires Synthesized by Thermal Oxidation of Iron in Water Vapour
In this work, iron oxide nanosheets (NSs) and nanowires (NWs) were fabricated by thermal oxidation of iron foils at 500 and 800 °C in the presence of water vapour. Oxidation resulted in multi-scale oxide with the surface oxide comprising of α-Fe2O3 and inner oxide comprising of mostly Fe3O4. The mechanism of formation is discussed to be based on stress-driven mechanism and diffusion paths of iron ions. It was found that the NSs formed could adsorb 112 mg/L aqueous Cr(VI) and the NWs could adsorb 200 mg/L of Cr(VI). It is suggested that the Cr(VI) removal by the iron oxide NSs/NWs due to the electrostatic reaction between the adsorbent and adsorbate.
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