Wet chemical synthesis of hematite: Its magnetic property and sensing activity

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-02-06 DOI:10.1016/j.mseb.2025.118057

Saikat Jati , Bodhishatwa Roy , Sanatan Chattopadhyay , Tanushree Bala

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Abstract

Iron oxide is well known for its applications in materials science and also in biology. Hematite i.e. α-Fe₂O₃ is the most stable form among several polymorphs of iron oxide. This study connects the synthesis of hematite via a simple reproducible route, its magnetic property and sensing capacity towards isopropyl alcohol. Here, citrate and hexamine are used as stabilizing agents. The intermediate product has evidence of their presence which on calcination forms α-Fe₂O_3. Detailed characterization using multiple techniques establishes the formation of α-Fe₂O₃. A detailed field dependent and temperature dependent magnetic measurements reveal an interesting behaviour of α-Fe₂O_3, above and below the Morin transition temperature. This α-Fe₂O₃ has good sensing capacity for several volatile organic compounds (VOCs) just at room temperature, isopropyl alcohol shows the best sensing response. The sample is prepared using easy drop casting method and the sensing device used here has shorter Response and Recovery time.

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.