CN103692519A - Method for in-situ growth of magnetic nanoparticles Fe3O4 on surface of wood - Google Patents

Method for in-situ growth of magnetic nanoparticles Fe3O4 on surface of wood Download PDF

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Publication number
CN103692519A
CN103692519A CN201310703641.9A CN201310703641A CN103692519A CN 103692519 A CN103692519 A CN 103692519A CN 201310703641 A CN201310703641 A CN 201310703641A CN 103692519 A CN103692519 A CN 103692519A
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reducing sugar
magnetic nano
wood surface
salt
wood
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CN201310703641.9A
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CN103692519B (en
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李坚
孙庆丰
甘文涛
卢芸
高丽坤
万才超
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Northeast Forestry University
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Northeast Forestry University
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Abstract

The invention relates to a method for in-situ growth of magnetic nanoparticles Fe3O4 on the surface of wood, and relates to a method for growing the magnetic nanoparticles on the surface of wood, aiming at solving the problem in the prior art that the magnetic nanoparticles Fe3O4 cannot be formed on the surface of wood in situ. The method comprises the following steps: immersing wood in reducing sugar mixed liquor containing Fe<3+> and Fe<2+> for hydrothermal reaction; then, adding 1.0*10<-4>mol/L-10mol/L alkaline liquor into the reaction system; and finally taking out the wood and drying to obtain the wood of which the surface is formed with the magnetic nanoparticles Fe3O4 by in-situ growth. The method for in-situ growth of magnetic nanoparticles Fe3O4 on the surface of wood provided by the invention has the advantages that the process is simple and raw materials are wide in source. The obtained magnetic nanoparticles Fe3O4/wood have good magnetism.

Description

A kind of wood surface growth in situ magnetic Nano Fe 3o 4method
Technical field
The present invention relates to the method for wood surface growth magnetic Nano.
Background technology
By inorganic nano material pay(useful) load in wood surface to prepare functional inorganic nano/wood composite new material, the functionalization of timber is expanded and high value added utilization all has important researching value and practical significance.Yet, when if inorganic nano material floods with tradition or the method for brusher is applied to wood surface, easily occur to disperse uneven, with the problem such as basal body interface associativity is poor, make nano material be difficult to embody small-size effect and skin effect, and then make nano material can not really bring into play its characteristic, the improvement of lumber functionality is also very restricted therefrom.
Magnetic Nano Fe 3o 4refer to that particle diameter demonstrates the Fe of some characteristic of nano material in 1～100nm range scale 3o 4nano material, due to its unique physicochemical properties, makes it at aspects such as physics, chemistry, show the specific use different from conventional magnetic material.Magnetic Nano Fe 3o 4in field extensive uses such as magnetic recording, magnetic fluid, catalysis, medicine, pigment.
In sum, prior art exists and can not form magnetic Nano Fe in wood surface original position 3o 4problem.
Summary of the invention
The present invention will solve prior art and exist and can not form magnetic Nano Fe in wood surface original position 3o 4problem, and provide a kind of wood surface growth in situ magnetic Nano Fe 3o 4method.
A kind of wood surface growth in situ magnetic Nano Fe 3o 4method, specifically according to following steps, carry out:
One, will contain Fe 3+salt and containing Fe 2+salt mix with reducing sugar, obtain containing Fe 3+and Fe 2+reducing sugar mixed solution, then timber is immersed in and contains Fe 3+and Fe 2+reducing sugar mixed solution in and sealed reactor, in temperature, be then hydro-thermal reaction 1h～52h at 70 ℃～200 ℃, finally reaction vessel is cooled to room temperature;
Described Fe 3+salt and the mol ratio of reducing sugar be (1～20): 1; Described Fe 2+salt and the mol ratio of reducing sugar be (1～20): 1;
Two, by concentration, be 1.0 * 10 -4the alkaline solution of mol/L～10mol/L joins in step 1 in reaction vessel, and is at 70 ℃～200 ℃, to continue reaction 1h～48h in temperature;
Described in alkaline solution described in step 2 and step 1, contain Fe 3+and Fe 2+the volume ratio of reducing sugar mixed solution be (0.1～10): 1;
Three, the reacted timber of step 2 is taken out, and be vacuum drying 1h～48h at 20 ℃～150 ℃ in temperature, obtain surface in situ growth magnetic Nano Fe 3o 4timber.
The invention has the beneficial effects as follows: the present invention utilizes hydro-thermal method at wood surface growth in situ magnetic Nano Fe 3o 4method, technique is simple, raw material sources are extensive.The magnetic Nano Fe obtaining 3o 4/ timber has good magnetic, and the novel wooden base magnetic composite of preparation can have extensive use in fields such as microwave absorption, catalyst carrier, magnetic recordings at the magnetic timber of preparation.
The present invention is for a kind of wood surface growth in situ magnetic Nano Fe 3o 4method.
Accompanying drawing explanation
Fig. 1 is the magnetic Nano Fe that embodiment mono-obtains 3o 4the photomacrograph figure of/Wood composite material;
Fig. 2 is the magnetic Nano Fe that embodiment mono-obtains 3o 4the photomacrograph figure that/timber can be sucked up by magnet.
The specific embodiment
Technical solution of the present invention is not limited to the following cited specific embodiment, also comprises any combination between each specific embodiment.
The specific embodiment one: a kind of wood surface growth in situ magnetic Nano Fe described in present embodiment 3o 4method, specifically according to following steps, carry out:
One, will contain Fe 3+salt and containing Fe 2+salt mix with reducing sugar, obtain containing Fe 3+and Fe 2+reducing sugar mixed solution, then timber is immersed in and contains Fe 3+and Fe 2+reducing sugar mixed solution in and sealed reactor, in temperature, be then hydro-thermal reaction 1h～52h at 70 ℃～200 ℃, finally reaction vessel is cooled to room temperature;
Described Fe 3+salt and the mol ratio of reducing sugar be (1～20): 1; Described Fe 2+salt and the mol ratio of reducing sugar be (1～20): 1;
Two, by concentration, be 1.0 * 10 -4the alkaline solution of mol/L～10mol/L joins in step 1 in reaction vessel, and is at 70 ℃～200 ℃, to continue reaction 1h～48h in temperature;
Described in alkaline solution described in step 2 and step 1, contain Fe 3+and Fe 2+the volume ratio of reducing sugar mixed solution be (0.1～10): 1;
Three, the reacted timber of step 2 is taken out, and be vacuum drying 1h～48h at 20 ℃～150 ℃ in temperature, obtain surface in situ growth magnetic Nano Fe 3o 4timber.
Timber is as a kind of natural organic high-molecular material and magnetic Nano Fe 3o 4carry out organic composite and not only make timber there is small-size effect, quantum size effect and the skin effect of nano material, but also by magnetic Nano Fe 3o 4unique magnetic combine with it, make not have the timber of magnetic to possess magnetic speciality, widened the scope of application of timber, make timber also have important using value at some special occasions.
The beneficial effect of present embodiment is: present embodiment utilizes hydro-thermal method at wood surface growth in situ magnetic Nano Fe 3o 4method, technique is simple, raw material sources are extensive.The magnetic Nano Fe obtaining 3o 4/ timber has good magnetic, and the novel wooden base magnetic composite of preparation can have extensive use in fields such as microwave absorption, catalyst carrier, magnetic recordings at the magnetic timber of preparation.
The specific embodiment two: present embodiment is different from the specific embodiment one: the timber described in step 1 is softwood or broadleaf.Other is identical with the specific embodiment one.
The specific embodiment three: present embodiment is different from one of the specific embodiment one or two: contain Fe described in step 1 3+salt be iron chloride, ferric sulfate or ferric nitrate.Other is identical with the specific embodiment one or two.
The specific embodiment four: present embodiment is different from one of specific embodiment one to three: contain Fe described in step 1 2+salt be frerrous chloride, ferrous sulfate or ferrous nitrate.Other is identical with the specific embodiment one to three.
The specific embodiment five: present embodiment is different from one of specific embodiment one to four: the reducing sugar described in step 1 is a kind of in glucose, fructose, sucrose, galactolipin, lactose and maltose or several mixture wherein.Other is identical with the specific embodiment one to four.
The specific embodiment six: present embodiment is different from one of specific embodiment one to five: the Fe described in step 1 3+salt and the mol ratio of reducing sugar be (1～10): 1; Fe described in step 1 2+salt and the mol ratio of reducing sugar be (1～10): 1.Other is identical with the specific embodiment one to five.
The specific embodiment seven: present embodiment is different from one of specific embodiment one to six: in step 1, timber is immersed in and contains Fe 3+and Fe 2+reducing sugar mixed solution in and sealed reactor, in temperature, be then hydro-thermal reaction 1h～48h at 70 ℃～150 ℃.Other is identical with the specific embodiment one to six.
The specific embodiment eight: present embodiment is different from one of specific embodiment one to seven: the alkaline solution described in step 2 is NaOH solution or ammonia spirit.Other is identical with the specific embodiment one to seven.
The specific embodiment nine: present embodiment is different from one of specific embodiment one to eight: contain Fe described in the alkaline solution described in step 2 and step 1 3+and Fe 2+the volume ratio of reducing sugar mixed solution be 1:1.Other is identical with the specific embodiment one to eight.
The specific embodiment ten: present embodiment is different from one of specific embodiment one to nine: be 1.0 * 10 by concentration in step 2 -4the alkaline solution of mol/L～10mol/L joins in step 1 in reaction vessel, and is at 70 ℃～150 ℃, to continue reaction 1～48h in temperature.Other is identical with the specific embodiment one to nine.
Adopt following examples to verify beneficial effect of the present invention:
Embodiment mono-:
A kind of wood surface growth in situ magnetic Nano Fe described in the present embodiment 3o 4method, specifically according to following steps, carry out
One, will contain Fe 3+salt and containing Fe 2+salt mix with reducing sugar, obtain containing Fe 3+and Fe 2+reducing sugar mixed solution, then poplar is immersed in and contains Fe 3+and Fe 2+reducing sugar mixed solution in and sealed reactor, in temperature, be then hydro-thermal reaction 8h at 50 ℃, finally reaction vessel is cooled to room temperature;
Described Fe 3+salt and the mol ratio of reducing sugar be 7:4; Described Fe 2+salt and the mol ratio of reducing sugar be 7:4;
Two, the alkaline solution that is 0.6mol/L by concentration joins in step 1 in reaction vessel, and is at 50 ℃, to continue reaction 8h in temperature;
Described aqueous slkali is NH 3h 2o; The described Fe that contains 2+salt be FeCl 2; The described F that contains e 3+salt be FeCl 3; Described reducing sugar is glucose;
Described in alkaline solution described in step 2 and step 1, contain Fe 3+and Fe 2+the volume ratio of reducing sugar mixed solution be 1:1;
Three, the reacted timber of step 2 is taken out, and be vacuum drying 24h at 60 ℃ in temperature, obtain surface in situ growth magnetic Nano Fe 3o 4timber.
The magnetic Nano Fe that embodiment mono-obtains 3o 4the photomacrograph figure of/Wood composite material as shown in Figure 1, as shown in Figure 1, Fe 3o 4/ Wood composite material has natural wood vein structure, but material surface color burn, is sepia and with metallic luster.
The magnetic Nano Fe that embodiment mono-obtains 3o 4the photomacrograph figure that/timber can be sucked up by magnet as shown in Figure 2, as shown in Figure 2, magnetic Nano Fe 3o 4at wood surface growth in situ, and the magnetic Nano Fe that obtains of embodiment mono- 3o 4/ timber has good magnetic.

Claims (10)

1. a wood surface growth in situ magnetic Nano Fe 3o 4method, it is characterized in that a kind of wood surface growth in situ magnetic Nano Fe 3o 4method according to following steps, carry out:
One, will contain Fe 3+salt and containing Fe 2+salt mix with reducing sugar, obtain containing Fe 3+and Fe 2+reducing sugar mixed solution, then timber is immersed in and contains Fe 3+and Fe 2+reducing sugar mixed solution in and sealed reactor, in temperature, be then hydro-thermal reaction 1h～52h at 70 ℃～200 ℃, finally reaction vessel is cooled to room temperature;
Described Fe 3+salt and the mol ratio of reducing sugar be (1～20): 1; Described Fe 2+salt and the mol ratio of reducing sugar be (1～20): 1;
Two, by concentration, be 1.0 * 10 -4the alkaline solution of mol/L～10mol/L joins in step 1 in reaction vessel, and is at 70 ℃～200 ℃, to continue reaction 1h～48h in temperature;
Described in alkaline solution described in step 2 and step 1, contain Fe 3+and Fe 2+the volume ratio of reducing sugar mixed solution be (0.1～10): 1;
Three, the reacted timber of step 2 is taken out, and be vacuum drying 1h～48h at 20 ℃～150 ℃ in temperature, obtain surface in situ growth magnetic Nano Fe 3o 4timber.
2. a kind of wood surface growth in situ magnetic Nano Fe according to claim 1 3o 4method, it is characterized in that the timber described in step 1 is softwood or broadleaf.
3. a kind of wood surface growth in situ magnetic Nano Fe according to claim 1 3o 4method, it is characterized in that the Fe that contains described in step 1 3+salt be iron chloride, ferric sulfate or ferric nitrate.
4. a kind of wood surface growth in situ magnetic Nano Fe according to claim 1 3o 4method, it is characterized in that the Fe that contains described in step 1 2+salt be frerrous chloride, ferrous sulfate or ferrous nitrate.
5. a kind of wood surface growth in situ magnetic Nano Fe according to claim 1 3o 4method, it is characterized in that the reducing sugar described in step 1 is a kind of in glucose, fructose, sucrose, galactolipin, lactose and maltose or several mixture wherein.
6. a kind of wood surface growth in situ magnetic Nano Fe according to claim 1 3o 4method, it is characterized in that the Fe described in step 1 3+salt and the mol ratio of reducing sugar be (1～10): 1; Fe described in step 1 2+salt and the mol ratio of reducing sugar be (1～10): 1.
7. a kind of wood surface growth in situ magnetic Nano Fe according to claim 1 3o 4method, it is characterized in that in step 1, timber being immersed in and containing Fe 3+and Fe 2+reducing sugar mixed solution in and sealed reactor, in temperature, be then hydro-thermal reaction 1h～48h at 70 ℃～150 ℃.
8. a kind of wood surface growth in situ magnetic Nano Fe according to claim 1 3o 4method, it is characterized in that the alkaline solution described in step 2 is NaOH solution or ammonia spirit.
9. a kind of wood surface growth in situ magnetic Nano Fe according to claim 1 3o 4method, it is characterized in that the Fe that contains described in the alkaline solution described in step 2 and step 1 3+and Fe 2+the volume ratio of reducing sugar mixed solution be 1:1.
10. a kind of wood surface growth in situ magnetic Nano Fe according to claim 1 3o 4method, it is characterized in that in step 2 being 1.0 * 10 by concentration -4the alkaline solution of mol/L～10mol/L joins in step 1 in reaction vessel, and is at 70 ℃～150 ℃, to continue reaction 1～48h in temperature.
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104005015A (en) * 2014-06-12 2014-08-27 哈尔滨工业大学 Method for conducting in-situ growth of alpha-Fe2O3 nano arrays on surface of steel
CN104400846A (en) * 2014-10-22 2015-03-11 东北林业大学 Preparation method of magnetic-response wood/Fe3O4 composite material
CN105666613A (en) * 2016-03-01 2016-06-15 山东农业大学 Preparation method of superhydrophobic and oleophobic bactericidal flame-retardant weatherproof magnetic functional wood
CN106827134A (en) * 2017-02-10 2017-06-13 南京林业大学 A kind of preparation method of the controllable magnetic timber of magnetic
CN107127851A (en) * 2017-05-22 2017-09-05 东北林业大学 A kind of preparation method for magnetic induction heating magnetically timber
CN109016000A (en) * 2018-09-13 2018-12-18 湘南学院 A kind of method that phenolic resin strengthens wood of Cunninghamia lanceolata
CN112847704A (en) * 2019-11-12 2021-05-28 东北林业大学 Functional wood with wave-absorbing and light aging-resistant performances and preparation method thereof
CN113558264A (en) * 2021-07-06 2021-10-29 中国农业科学院油料作物研究所 Preparation method of nutrient-loaded wood-based reel, product and application thereof
CN114851332A (en) * 2022-05-31 2022-08-05 东北林业大学 Preparation method of wood robot with magnetic anisotropy

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CN108145816A (en) * 2017-12-22 2018-06-12 东北林业大学 A kind of method of wood surface growth in situ nano-Ag particles

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CN101070193A (en) * 2007-06-19 2007-11-14 南开大学 Method for preparing magnetite Fe3O4 nano particles material
CN101181791A (en) * 2007-10-31 2008-05-21 云南大学 Method for preparing magnetic timber

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CN101070193A (en) * 2007-06-19 2007-11-14 南开大学 Method for preparing magnetite Fe3O4 nano particles material
CN101181791A (en) * 2007-10-31 2008-05-21 云南大学 Method for preparing magnetic timber

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104005015A (en) * 2014-06-12 2014-08-27 哈尔滨工业大学 Method for conducting in-situ growth of alpha-Fe2O3 nano arrays on surface of steel
CN104005015B (en) * 2014-06-12 2016-03-02 哈尔滨工业大学 A kind of method of steel surface growth in situ α-Fe2O3 nano-array
CN104400846A (en) * 2014-10-22 2015-03-11 东北林业大学 Preparation method of magnetic-response wood/Fe3O4 composite material
CN105666613A (en) * 2016-03-01 2016-06-15 山东农业大学 Preparation method of superhydrophobic and oleophobic bactericidal flame-retardant weatherproof magnetic functional wood
CN106827134A (en) * 2017-02-10 2017-06-13 南京林业大学 A kind of preparation method of the controllable magnetic timber of magnetic
CN107127851B (en) * 2017-05-22 2018-12-18 东北林业大学 A kind of preparation method for magnetic induction heating magnetically timber
CN107127851A (en) * 2017-05-22 2017-09-05 东北林业大学 A kind of preparation method for magnetic induction heating magnetically timber
CN109016000A (en) * 2018-09-13 2018-12-18 湘南学院 A kind of method that phenolic resin strengthens wood of Cunninghamia lanceolata
CN112847704A (en) * 2019-11-12 2021-05-28 东北林业大学 Functional wood with wave-absorbing and light aging-resistant performances and preparation method thereof
CN112847704B (en) * 2019-11-12 2022-03-22 东北林业大学 Preparation method of functional wood with wave-absorbing and light aging-resistant properties
CN113558264A (en) * 2021-07-06 2021-10-29 中国农业科学院油料作物研究所 Preparation method of nutrient-loaded wood-based reel, product and application thereof
CN113558264B (en) * 2021-07-06 2022-07-19 中国农业科学院油料作物研究所 Preparation method of nutrient-loaded wood-based reel, product and application thereof
CN114851332A (en) * 2022-05-31 2022-08-05 东北林业大学 Preparation method of wood robot with magnetic anisotropy

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