CN104842420A - 一种室温下在竹材表面生长磁性纳米γ-Fe2O3的方法 - Google Patents

一种室温下在竹材表面生长磁性纳米γ-Fe2O3的方法 Download PDF

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CN104842420A
CN104842420A CN201510250226.1A CN201510250226A CN104842420A CN 104842420 A CN104842420 A CN 104842420A CN 201510250226 A CN201510250226 A CN 201510250226A CN 104842420 A CN104842420 A CN 104842420A
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room temperature
bamboo wood
bamboo
magnetic
nano particle
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孙庆丰
姚秋芳
金春德
李景鹏
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Zhejiang A&F University ZAFU
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02—Processes; Apparatus
    • B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/16—Inorganic impregnating agents
    • B27K3/32—Mixtures of different inorganic impregnating agents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
    • B27K5/04—Combined bleaching or impregnating and drying of wood
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Power Engineering (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Compounds Of Iron (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)

Abstract

本发明公开了一种室温下在竹材表面生长磁性γ-Fe2O3纳米粒子的方法，其通过共沉淀法于室温下在竹材表面生长磁性γ-Fe2O3纳米粒子，其工艺简单，反应条件温和，操作简易，得到的磁性γ-Fe2O3纳米粒子/竹材复合材兼有竹材原来的优良性能和较好的磁性。

Description

一种室温下在竹材表面生长磁性纳米γ-Fe2O3的方法
技术领域
本发明涉及一种室温下在竹材表面生长磁性γ-Fe2O3纳米粒子的方法。
背景技术
磁性γ-Fe2O3纳米粒子是一种尖晶石结构的铁氧化物，具有较高的饱和磁化强度和较小的矫顽磁力，广泛运用于高密度磁记录介质材料、电磁感应材料、电磁波吸收材料和高性能电磁自旋设备。
竹材作为一种天然绿色可再生资源和木材的替代材料，因为具有生长速度快、繁殖能力强、强重比高、智能性调温、调湿，净化空气、优美的纹理结构和减少噪音等优良性能广泛的运用于各行各业，与人类生活息息相关。但是，由于竹材本身无磁性，使竹材难以运用于电磁屏蔽、微波吸收、重金属离子吸附等领域。
磁化竹复合材是符合新世纪的高附加值材料理念的一种新型的功能性复合材料，具有广泛的用途和较光明的发展前景。其中传统的制备磁性木质复合材的方法主要是浸透法、粉体法和涂布法。然而这些方法制备工艺复杂，原料利用率低，中间产物和副产品易造成坏境污染。
通过室温共沉淀法将无机纳米材料有效负载于竹材表面来制备功能性无机纳米/竹材新型无机-有机物复合材料，这不仅承载了竹材天然的物理化学特性，而且因为无机纳米粒子的小尺寸效应和表面效应衍生出众多新的特殊性能，对竹材的高附加值利用和功能化拓展具有重要的研究意义，为制备磁化竹复合材料开拓了一种新的方法和研究思路。
发明内容
本发明提供了一种反应条件温和、操作简易、原料来源广泛、在竹材表面生长磁性γ-Fe2O3纳米粒子的方法。
本发明讲述的一种室温下在竹材表面生长磁性γ-Fe2O3纳米粒子的方法是通过以下步骤实现的：
一、将竹材浸入含有Fe3+和Fe2+的混合溶液，其中，Fe3+和Fe2+在混合溶液中的摩尔比1∶1～4∶1，然后室温下搅拌3-12h且期间真空浸渍1-10次；
二、加入适量的NH3·H2O后使其混合溶液的pH值为9-12，反应温度为室温，反应时间为3～12h；
三、将经步处理后的竹材在2O～110℃条件下真空干燥1～48h后即可得到在在竹材表面生长磁性γ-Fe2O3纳米粒子。
优选地，步骤(1)中Fe3+的来源是硝酸铁、氯化铁、硫酸铁中任何一种形式的三价铁盐，Fe2+的来源是硝酸亚铁、氯化亚铁、硫酸亚铁中的任何一种含有亚铁离子的盐。
本发明的有益效果是：
本发明了利用共沉淀法制备室温下在竹材表面生长磁性γ-Fe2O3纳米粒子的方法，其工艺简单，反应条件温和，操作简易，原料来源广泛且价格低廉。得到的磁性γ-Fe2O3纳米粒子/竹材复合材兼有竹材原来的优良性能和较好的磁性，制备的新型竹质基磁性复合材料可在制备的磁化竹复合材在微波吸收、电磁屏蔽、催化剂载体等领域具有广泛应用。
附图说明
图1是本发明得到的磁性γ-Fe2O3纳米粒子/竹材复合材料的宏观图；
图2是本发明得到的磁化竹用磁铁可以将其吸至悬于空中的宏观图。
具体实施方式
本发明技术方案不局限于以下所列举具体实施方式，还包括各具体实施方式间的任意组合。
一种室温下在竹材表面生长磁性γ-Fe2O3纳米粒子的方法如下：
将竹材浸入含有Fe3+和Fe2+的混合溶液，其中，Fe3+和Fe2+在混合溶液中的摩尔比1∶1～4∶1，然后室温下搅拌3-12h且期间真空浸渍1-10次；
加入NH3·H2O后使其混合溶液的pH值为9-12，反应温度为室温，反应时间为3～12h；
将经处理后的竹材在20～110℃条件下真空干燥1～48h后即可得到在在竹材表面生长磁性γ-Fe2O3纳米粒子。
本发明得到的磁性γ-Fe2O3纳米粒子/竹材复合材料产品见图1，磁性γ-Fe2O3纳米粒子/竹材复合材具有较好的磁性，用磁铁可以将其吸至悬于空中(见图2)。

Claims (2)

1.一种室温下在竹材表面生长磁性Y-Fe2O3纳米粒子的方法，其特征在于，包括如下步骤
(1)、将竹材浸入含有Fe3+和Fe2+的混合溶液，其中，Fe3+和Fe2+在混合溶液中的摩尔比1∶1～4∶1，然后室温下搅拌3-12h，且期间真空浸渍1-10次；
(2)、加入适量的NH3·H2O后使其混合溶液的pH值为9-12，反应温度为室温，反应时间为3～12h；
(3)、将经处理后的竹材于20～110℃条件下真空干燥1～48h，即可得到在在竹材表面生长磁性Y-Fe2O3纳米粒子。
2.根据权利要求1所述的一种室温下在竹材表面生长磁性Y-Fe2O3纳米粒子的方法，其特征在于：步骤(1)中Fe3+的来源是硝酸铁、氯化铁、硫酸铁中任何一种形式的三价铁盐，Fe2+的来源是硝酸亚铁、氯化亚铁、硫酸亚铁中的任何一种含有亚铁离子的盐。
CN201510250226.1A 2015-05-15 2015-05-15 一种室温下在竹材表面生长磁性纳米γ-Fe2O3的方法 Pending CN104842420A (zh)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105666613A (zh) * 2016-03-01 2016-06-15 山东农业大学 超疏水疏油杀菌阻燃耐候磁性功能木材的制备方法
CN106827134A (zh) * 2017-02-10 2017-06-13 南京林业大学 一种磁性可控的磁性木材的制备方法
CN108127756A (zh) * 2017-11-22 2018-06-08 浙江农林大学 一种在木材表面构筑无机微纳米层的方法

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CN1364730A (zh) * 2002-02-08 2002-08-21 无锡威孚吉大新材料应用开发有限公司 一种氧化铁超细纳米粉体的制备方法
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CN1364730A (zh) * 2002-02-08 2002-08-21 无锡威孚吉大新材料应用开发有限公司 一种氧化铁超细纳米粉体的制备方法
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105666613A (zh) * 2016-03-01 2016-06-15 山东农业大学 超疏水疏油杀菌阻燃耐候磁性功能木材的制备方法
CN106827134A (zh) * 2017-02-10 2017-06-13 南京林业大学 一种磁性可控的磁性木材的制备方法
CN108127756A (zh) * 2017-11-22 2018-06-08 浙江农林大学 一种在木材表面构筑无机微纳米层的方法

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Application publication date: 20150819