CN103692519B - A kind of wood surface growth in situ magnetic Nano Fe 3o 4method - Google Patents

A kind of wood surface growth in situ magnetic Nano Fe 3o 4method Download PDF

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

A kind of wood surface growth in situ magnetic Nano Fe 3o 4method, the present invention relates to wood surface growth magnetic Nano method.The present invention will solve prior art to be existed and can not form magnetic Nano Fe in wood surface original position 3o 4problem.Method: timber is immersed in containing Fe 3+and Fe 2+reducing sugar mixed solution in hydro-thermal reaction, then be 1.0 × 10 by concentration -4m othe alkaline solution of l/L ~ 10mol/L adds in reaction system, finally takes out the drying of wood, namely obtains surface in situ growth magnetic Nano Fe 3o 4timber.A kind of wood surface growth in situ of the present invention magnetic Nano Fe 3o 4method, technique is simple, and raw material sources are extensive, the magnetic Nano Fe obtained 3o 4/ timber has good magnetic.The present invention is used for a kind of wood surface growth in situ magnetic Nano Fe 3o 4method.

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 nanometer/wood composite new material, the functionalization of timber to be expanded and high value added utilization all has important researching value and practical significance.But, if when inorganic nano material floods with tradition or the method for brusher is applied to wood surface, then easily occur dispersion uneven, with the problem such as basal body interface associativity difference, nano material is made to be difficult to embody small-size effect and skin effect, and then make nano material can not really 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 the physicochemical properties of its uniqueness, makes it in physics, chemistry etc., 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 to be existed 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 carry out according to following steps:
One, will containing 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 to be immersed in containing Fe 3+and Fe 2+reducing sugar mixed solution in and sealed reactor, then hydro-thermal reaction 1h ~ 52h at temperature is 70 DEG C ~ 200 DEG C, is finally cooled to room temperature by reaction vessel;
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, be 1.0 × 10 by concentration -4the alkaline solution of mol/L ~ 10mol/L joins in step one in reaction vessel, and at temperature is 70 DEG C ~ 200 DEG C, continue reaction 1h ~ 48h;
Described in alkaline solution described in step 2 and step one containing Fe 3+and Fe 2+the volume ratio of reducing sugar mixed solution be (0.1 ~ 10): 1;
Three, reacted for step 2 timber is taken out, and at temperature is 20 DEG C ~ 150 DEG C vacuum drying 1h ~ 48h, namely 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, and raw material sources are extensive.The magnetic Nano Fe obtained 3o 4/ timber has good magnetic, and the novel wooden base magnetic composite of preparation can have extensive use at the magnetic timber of preparation in fields such as microwave absorption, catalyst carrier, magnetic recordings.
The present invention is used 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 one obtains 3o 4the photomacrograph figure of/Wood composite material;
Fig. 2 is the magnetic Nano Fe that embodiment one obtains 3o 4the photomacrograph figure that/timber can be sucked up by magnet.
Detailed description of the invention
Technical solution of the present invention is not limited to following cited detailed description of the invention, also comprises any combination between each detailed description of the invention.
Detailed description of the invention one: a kind of wood surface growth in situ magnetic Nano Fe described in present embodiment 3o 4method, specifically carry out according to following steps:
One, will containing 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 to be immersed in containing Fe 3+and Fe 2+reducing sugar mixed solution in and sealed reactor, then hydro-thermal reaction 1h ~ 52h at temperature is 70 DEG C ~ 200 DEG C, is finally cooled to room temperature by reaction vessel;
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, be 1.0 × 10 by concentration -4the alkaline solution of mol/L ~ 10mol/L joins in step one in reaction vessel, and at temperature is 70 DEG C ~ 200 DEG C, continue reaction 1h ~ 48h;
Described in alkaline solution described in step 2 and step one containing Fe 3+and Fe 2+the volume ratio of reducing sugar mixed solution be (0.1 ~ 10): 1;
Three, reacted for step 2 timber is taken out, and at temperature is 20 DEG C ~ 150 DEG C vacuum drying 1h ~ 48h, namely 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 4carrying out organic composite not only makes timber have the small-size effect of nano material, quantum size effect and skin effect, 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, made 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, and raw material sources are extensive.The magnetic Nano Fe obtained 3o 4/ timber has good magnetic, and the novel wooden base magnetic composite of preparation can have extensive use at the magnetic timber of preparation in fields such as microwave absorption, catalyst carrier, magnetic recordings.
Detailed description of the invention two: present embodiment and detailed description of the invention one unlike: the timber described in step one is softwood or broadleaf.Other is identical with detailed description of the invention one.
Detailed description of the invention three: one of present embodiment and detailed description of the invention one or two unlike: described in step one containing Fe 3+salt be iron chloride, ferric sulfate or ferric nitrate.Other is identical with detailed description of the invention one or two.
Detailed description of the invention four: one of present embodiment and detailed description of the invention one to three unlike: described in step one containing Fe 2+salt be frerrous chloride, ferrous sulfate or ferrous nitrate.Other is identical with detailed description of the invention one to three.
Detailed description of the invention five: one of present embodiment and detailed description of the invention one to four unlike: the reducing sugar described in step one is a kind of or wherein several mixture in glucose, fructose, sucrose, galactolipin, lactose and maltose.Other is identical with detailed description of the invention one to four.
Detailed description of the invention six: one of present embodiment and detailed description of the invention one to five are unlike Fe described in step one 3+salt and the mol ratio of reducing sugar be (1 ~ 10): 1; Fe described in step one 2+salt and the mol ratio of reducing sugar be (1 ~ 10): 1.Other is identical with detailed description of the invention one to five.
Detailed description of the invention seven: one of present embodiment and detailed description of the invention one to six unlike: in step one, timber is immersed in containing Fe 3+and Fe 2+reducing sugar mixed solution in and sealed reactor, then hydro-thermal reaction 1h ~ 48h at temperature is 70 DEG C ~ 150 DEG C.Other is identical with detailed description of the invention one to six.
Detailed description of the invention eight: one of present embodiment and detailed description of the invention one to seven unlike: the alkaline solution described in step 2 is NaOH solution or ammonia spirit.Other is identical with detailed description of the invention one to seven.
Detailed description of the invention nine: one of present embodiment and detailed description of the invention one to eight unlike described in: the alkaline solution described in step 2 and step one containing Fe 3+and Fe 2+the volume ratio of reducing sugar mixed solution be 1:1.Other is identical with detailed description of the invention one to eight.
Detailed description of the invention ten: one of present embodiment and detailed description of the invention one to nine unlike: be 1.0 × 10 by concentration in step 2 -4the alkaline solution of mol/L ~ 10mol/L joins in step one in reaction vessel, and continues reaction 1 ~ 48h at temperature is 70 DEG C ~ 150 DEG C.Other is identical with detailed description of the invention one to nine.
Following examples are adopted to verify beneficial effect of the present invention:
Embodiment one:
A kind of wood surface growth in situ magnetic Nano Fe described in the present embodiment 3o 4method, specifically carry out according to following steps
One, will containing 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 to be immersed in containing Fe 3+and Fe 2+reducing sugar mixed solution in and sealed reactor, then hydro-thermal reaction 8h at temperature is 50 DEG C, is finally cooled to room temperature by reaction vessel;
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, be that the alkaline solution of 0.6mol/L joins in step one in reaction vessel by concentration, and at temperature is 50 DEG C, continues reaction 8h;
Described aqueous slkali is NH 3h 2o; Described contains Fe 2+salt be FeCl 2; Described contains F e 3+salt be FeCl 3; Described reducing sugar is glucose;
Described in alkaline solution described in step 2 and step one containing Fe 3+and Fe 2+the volume ratio of reducing sugar mixed solution be 1:1;
Three, reacted for step 2 timber is taken out, and at temperature is 60 DEG C vacuum drying 24h, namely obtain surface in situ growth magnetic Nano Fe 3o 4timber.
The magnetic Nano Fe that embodiment one 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, in sepia and with metallic luster.
The magnetic Nano Fe that embodiment one 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 embodiment one obtains 3o 4/ timber has good magnetic.

Claims (9)

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 carry out according to following steps:
One, will containing 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 to be immersed in containing Fe 3+and Fe 2+reducing sugar mixed solution in and sealed reactor, then hydro-thermal reaction 1h ~ 52h at temperature is 70 DEG C ~ 200 DEG C, is finally cooled to room temperature by reaction vessel;
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;
Described reducing sugar is a kind of or wherein several mixture in glucose, fructose, sucrose, galactolipin, lactose and maltose;
Two, be 1.0 × 10 by concentration -4the alkaline solution of mol/L ~ 10mol/L joins in step one in reaction vessel, and at temperature is 70 DEG C ~ 200 DEG C, continue reaction 1h ~ 48h;
Described in alkaline solution described in step 2 and step one containing Fe 3+and Fe 2+the volume ratio of reducing sugar mixed solution be (0.1 ~ 10): 1;
Three, reacted for step 2 timber is taken out, and at temperature is 20 DEG C ~ 150 DEG C vacuum drying 1h ~ 48h, namely 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 one 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 described in step one containing Fe 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 described in step one containing Fe 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 Fe described in step one 3+salt and the mol ratio of reducing sugar be (1 ~ 10): 1; Fe described in step one 2+salt and the mol ratio of reducing sugar be (1 ~ 10): 1.
6. a kind of wood surface growth in situ magnetic Nano Fe according to claim 1 3o 4method, it is characterized in that in step one, timber being immersed in containing Fe 3+and Fe 2+reducing sugar mixed solution in and sealed reactor, then hydro-thermal reaction 1h ~ 48h at temperature is 70 DEG C ~ 150 DEG C.
7. 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.
8. a kind of wood surface growth in situ magnetic Nano Fe according to claim 1 3o 4method, it is characterized in that described in the alkaline solution described in step 2 and step one containing Fe 3+and Fe 2+the volume ratio of reducing sugar mixed solution be 1:1.
9. a kind of wood surface growth in situ magnetic Nano Fe according to claim 1 3o 4method, to it is characterized in that concentration in step 2 being 1.0 × 10 -4the alkaline solution of mol/L ~ 10mol/L joins in step one in reaction vessel, and continues reaction 1 ~ 48h at temperature is 70 DEG C ~ 150 DEG C.
CN201310703641.9A 2013-12-19 2013-12-19 A kind of wood surface growth in situ magnetic Nano Fe 3o 4method Expired - Fee Related CN103692519B (en)

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CN100522825C (en) * 2007-06-19 2009-08-05 南开大学 Method for preparing magnetite Fe3O4 nano particles material
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