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Layered double hydroxides (LDHs) loading highly-dispersed fullerenes and preparing method of LDHs

A technology of hydrotalcite and fullerene, applied in the field of hydrotalcite material loaded with highly dispersed fullerene and its preparation, to achieve the effect of stable intercalation structure, strong interaction force and easy realization

Inactive Publication Date: 2012-09-12
ZIBO VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there are no domestic literature and patent reports on the immobilization of fullerenes between the layers of hydrotalcites intercalated with naphthalene acetic acid

Method used

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  • Layered double hydroxides (LDHs) loading highly-dispersed fullerenes and preparing method of LDHs
  • Layered double hydroxides (LDHs) loading highly-dispersed fullerenes and preparing method of LDHs
  • Layered double hydroxides (LDHs) loading highly-dispersed fullerenes and preparing method of LDHs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Step A: take by weighing 17.8g Zn(NO 3 ) 2 ·6H 2 O, 11.3g Al(NO 3 ) 3 9H 2 O dissolved in 100ml to remove CO 2 Mixed salt solution was prepared with water, another 5.6g NaOH was dissolved in 50ml to remove CO 2 Prepare alkaline solution in water, N at room temperature 2 Protection Use the double-drop method to add the salt solution and the alkali solution into the four-neck flask, and stir vigorously. Adjust the pH value to 7 with 0.1mol / L NaOH solution. The resulting slurry was crystallized at 60°C for 72 hours, and the product was placed in a centrifuge at a speed of 2500 rpm for 5 minutes, and then used to remove CO 2 Wash with water until neutral; take out the sample and dry it at 50°C for 48 hours for characterization, and get ZnAl-NO 3 -LDHs, whose Zn 2+ / Al 3+ =2.

[0040] Step B: the sodium salt of 10.9g naphthaleneacetic acid [C 12 h 9 o 2 Na] solid dissolved in 100mL to remove CO 2 After the deionized water was transferred into the four-necked ...

Embodiment 2

[0044] Step A: take by weighing 15.4g Mg(NO 3 ) 2 ·6H 2 O and 11.3g Al(NO 3 ) 3 9H 2 O dissolved in 100ml to remove CO 2 Mixed salt solution was prepared with water, another 2.0g NaOH was dissolved in 50ml to remove CO 2 Prepare alkaline solution in water, N at room temperature 2 The salt solution and alkali solution are added into the four-necked bottle by the double-drop method, and the pH value is adjusted to 10 with 5mol / L NaOH solution after the drop is completed. The resulting slurry is crystallized at 90°C for 12 hours, and the product is put into a centrifuge at a speed of 3500 rpm. Centrifuge at 1 / min for 3min, then use to remove CO 2 Wash with water until neutral; take out a small amount of samples and dry them at 90°C for 20 hours for characterization to obtain MgAl-NO 3 -LDHs, its Mg 2+ / Al 3+ =2.

[0045] Step B: the sodium salt of 10.9g naphthaleneacetic acid [C 12 h 9 o 2 Na] solid dissolved in 100mL to remove CO 2 After the deionized water was tr...

Embodiment 3

[0049] Step A: Weigh 17.5g Co(NO 3 ) 2 ·6H 2 O, 11.3g Al(NO 3 ) 3 9H 2 O dissolved in 100ml to remove CO 2 Mixed salt solution was prepared with water, another 8.0g NaOH was dissolved in 50ml to remove CO 2 Prepare alkaline solution in water, N at room temperature 2 Protection Use the double-drop method to add the salt solution and the alkali solution into the four-neck flask, and stir vigorously. Adjust the pH value to 7 with 2.0mol / L NaOH solution. The resulting slurry was crystallized at 70°C for 36 hours, and the product was placed in a centrifuge at a speed of 3000 rpm for 4 minutes, and then used to remove CO 2 Wash with water until neutral; take out the sample and dry it at 60°C for 36 hours for characterization, and obtain CoAl-NO 3 -LDHs, whose Co 2+ / Al 3+ =2.

[0050] Step B: the sodium salt of 10.9g naphthaleneacetic acid [C 12 h 9 o 2 Na] solid dissolved in 100mL to remove CO 2 After the deionized water was transferred into the four-necked bottle, ...

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Abstract

The invention belongs to the field of organic-inorganic composite materials and relates to layered double hydroxides (LDHs) loading highly-dispersed fullerenes and a preparing method of the LDHs. The method of the LDHs includes the steps of firstly preparing precursors of the LDHs, then preparing naphthylacetic acid intercalated LDHs, forming a hydrophobic environment containing a plurality of naphthalene groups in layers of naphthylacetic acid intercalated LDHs, and finally fixing the fullerenes into the layers of the LDHs. According to the LDHs loading the highly-dispersed fullerenes and the preparing method of the LDHs, the fullerene and naphthylacetic acid intercalated LDHs are of supramolecular structures, crystal structures of the LDHs are the crystal structures of layered double hydroxide-like materials, and the chemical formula is [ (M2+)1-x(M3+)x(OH)2 ]x+(NAA-)x(C60)y-water(1 / m), wherein x=0.25-0.33,y=0.05-0.1, m=3-6, the m relates to the number of crystal water molecules in the layers, M2+ relates to a divalent metal ion, and M3+relates to a trivalent metal ion of Al3+. According to the LDHs loading the highly-dispersed fullerenes and the preparing method of the LDHs, due to high interaction forces between the fullerenes (C60) and the naphthylacetic acid, the prepared fullerene and naphthylacetic acid intercalated LDHs have stable intercalation structures and can be used for preparing non-linear optics materials, strong magnetic materials and the like, and the preparing method is simple, practicable and easy to operate.

Description

technical field [0001] The invention belongs to the field of organic-inorganic composite materials, and relates to a hydrotalcite material loaded with highly dispersed fullerene and a preparation method thereof. Background technique [0002] Hydrotalcite (Layered Double Hydroxides, referred to as LDHs), is a class of anionic layered materials, and its chemical composition is [M 2+ 1-x m 3+ x (OH) 2 ] x+ (A n- ) x / n mH 2 O. The material is composed of mutually parallel laminae with a permanent positive charge. m 2+ ,M 3+ That is, divalent and trivalent metal cations with exchangeable anions A between the layers n- to maintain charge balance. The interlayer elements of hydrotalcite have strong covalent bonds, and the interlayer anions are connected to the laminates by ionic bonds, and the entire crystal is electrically neutral. Due to the unique layered structure of hydrotalcite and the exchangeability of interlayer anions, the introduction of functional anions i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B13/14
Inventor 刘晓磊
Owner ZIBO VOCATIONAL INST
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