具有磁致变色能力的环境响应型有机-无机杂化 Fe3O4/SiO2/PPy-c 核壳纳米复合材料的表征，可实现协同电学特性

IF 4.7 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2024-09-16 DOI:10.1021/acs.inorgchem.4c02550

Veena Nivetha Mary Mani Arockia Doss, Yang-Wei Lin, Lance Horng

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引用次数: 0

摘要

本研究的目的是分析一种在 Fe3O4/SiO2 核壳结构中加入炭黑和聚吡咯的复合材料的特性，该复合材料是在高超声波辐照条件（120 W）下使用 Stöber 方法合成的 Fe3O4/SiO2 纳米复合材料。Fe3O4/SiO2 核壳具有磁致变色行为，其特征是随温度变化的着色和磁排列。在中等温度（5-15 °C）下加入炭黑和聚吡咯可增强导电性。室温下，Fe3O4 的电阻率 ρ 为 7.30 × 106 Ω-cm，Fe3O4/SiO2 为 3.19 × 108 Ω-cm，Fe3O4/SiO2/PPy-c 为 242.56 Ω-cm。在中等温度（5-15 °C）下，制备的 Fe3O4/SiO2 和 Fe3O4/SiO2/PPy-c 纳米复合材料的 ρ 分别为 1.08 × 108 和 0.00799 Ω-cm。电流-电压测量结果表明，所有样品在正向偏压区都呈线性关系，曲线呈蝴蝶形。Fe3O4/SiO2/PPY-c纳米复合材料在适度温度下具有可调的协同电气特性，因此可用于环境应用、电气布线和电路。

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Characterization of an Environmentally Responsive Organic–Inorganic Hybrid Fe3O4/SiO2/PPy-c Core–Shell Nanocomposite with Magneto-Chromatic Ability for Synergistic Electrical Properties

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Characterization of an Environmentally Responsive Organic–Inorganic Hybrid Fe3O4/SiO2/PPy-c Core–Shell Nanocomposite with Magneto-Chromatic Ability for Synergistic Electrical Properties

The aim of this study was to analyze the properties of a composite that incorporates carbon black and polypyrrole within an Fe₃O₄/SiO₂ core–shell structure, synthesized using the Stöber method under high ultrasonic irradiation conditions (120 W) for Fe₃O₄/SiO₂ nanocomposite. The Fe₃O₄/SiO₂ core–shell indicates magnetochromatic behavior characterized by temperature-dependent coloration and magnetic alignment. Incorporating carbon black and polypyrrole at moderate temperature (5–15 °C) enhanced the electrical conductivity. The electrical resistivity ρ was 7.30 × 10⁶ Ω·cm for Fe₃O₄, 3.19 × 10⁸ Ω·cm for Fe₃O₄/SiO₂, and 242.56 Ω·cm for Fe₃O₄/SiO₂/PPy-c at room temperature. When it was performed at moderate temperature (5–15 °C), the ρ of the prepared Fe₃O₄/SiO₂ and Fe₃O₄/SiO₂/PPy-c nanocomposite was 1.08 × 10⁸ and 0.00799 Ω·cm, respectively. Current–voltage measurements revealed a linear relationship, with butterfly shaped curves in the forward-bias region for all samples. The Fe₃O₄/SiO₂/PPy-c nanocomposite’s tunable synergistic electrical properties at moderate temperatures make it useful for environmental applications, electrical wiring, and circuitry.

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.