Preparation of transition metal nanomaterials by thermally driven metal ion phase transfer

A metal ion, transition metal technology, applied in the field of transition metal nanomaterial preparation, can solve the problems of slow and incomplete phase transfer, and achieve the effects of rapid reaction, easy amplification and simple operation

Active Publication Date: 2017-02-15
ZHANGJIAGANG IND TECH RES INST CO LTD DALIAN INST OF CHEM PHYSICS CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when transition metals such as Fe, Co, and Cu are phase-transferred, there are problems such as slow and incomplete phase transfer.

Method used

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  • Preparation of transition metal nanomaterials by thermally driven metal ion phase transfer
  • Preparation of transition metal nanomaterials by thermally driven metal ion phase transfer
  • Preparation of transition metal nanomaterials by thermally driven metal ion phase transfer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] First, dissolve 145.78 mg of cetyltrimethylammonium bromide into 10 mL of chloroform for later use, and weigh 1.86 g of FeCl 3 and 2.57g KCl, add 10mL deionized water, heat the above solution to 50°C and add it to the previous chloroform phase, stir for 30 minutes, let it stand, separate the liquid to remove the water phase, then add 90mL deionized water, at 1600 Under the condition of rev / min, add 10mL of 300mmol / L NaBH 4 aqueous solution, reacted for 5 minutes, suction filtered, washed, and dried in vacuum for more than 6 hours to obtain Fe nanomaterials.

[0026] Such as figure 1 , the chloroform phase changed from colorless to light yellow after the phase transfer was completed, and the corresponding ultraviolet-visible spectrum showed the characteristic absorption peak of the Fe complex.

[0027] Such as figure 2 , the synthesized Fe nanomaterials have a graphene-like structure, and the whole is flake-like.

Embodiment 2

[0031] Embodiment 2: transition metal salt concentration

[0032] First, dissolve 145.78 mg of cetyltrimethylammonium bromide into 10 mL of chloroform for later use, and weigh 0.19 g of FeCl 3 and 2.57g KCl, add 10mL deionized water, heat the above solution to 50°C and add it to the previous chloroform phase, stir for 30 minutes, let it stand, separate the liquid to remove the water phase, then add 90mL deionized water, at 1600 Under the condition of rev / min, add 10mL of 300mmol / L NaBH 4 aqueous solution, reacted for 5 minutes, suction filtered, washed, and dried in vacuum for more than 6 hours to obtain Fe nanomaterials.

Embodiment 3

[0033] Example 3: Transition Metal Species (Cobalt)

[0034] First, dissolve 145.78 mg of cetyltrimethylammonium bromide into 10 mL of chloroform for later use, and weigh 4.09 g of CoCl 2 ·6H 2 O and 2.57g KCl, add 10mL of deionized water, heat the above solution to 50°C and add it to the previous chloroform phase, stir for 30 minutes, let it stand, separate the liquid to remove the water phase, then add 90mL of deionized water, in Under the condition of 1600 rev / min, add 10mL of 300mmol / L NaBH 4 aqueous solution, reacted for 5 minutes, suction filtered, washed, and vacuum-dried for more than 6 hours to obtain Co nanomaterials.

[0035] Such as image 3 , the chloroform phase changed from colorless to light blue after the phase transfer was completed, and the corresponding UV-Vis spectra showed the characteristic absorption peaks of Co complexes.

[0036]Such as Figure 4 , similar to Fe nanomaterials, the synthesized Co nanomaterials are also flake-like graphene structur...

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Abstract

The invention relates to a thermally-driven metal ion phase transfer method for preparing transition metal nanometerials. The method includes the specific steps that a transition metal salt and alkali halide mixed water solution is prepared, heating is conducted, metal cation and halogen anion are made to be combined into a coordination compound with negative charge, the solution is added into hydrophobic solvent dissolved with cationic surface active agents, and phase transfer of the metal coordination compound is achieved; the metal coordination compound transferred into the hydrophobic solvent can be used for preparing the transition metal nanometerials.

Description

technical field [0001] The invention belongs to the field of preparation of transition metal nanomaterials, in particular to a new method for preparing transition metal nanomaterials. Background technique [0002] Due to the nano-size effect, transition metal nanomaterials often have special electrical, optical, magnetic, catalytic and other properties, so they have a wide range of applications in many fields. In recent years, domestic and foreign research institutions have also carried out many fruitful research work on the preparation methods of transition metal nanomaterials. [0003] In the water-toluene two-phase system, Brust et al. used tetraoctylammonium bromide as a phase transfer catalyst, dodecyl mercaptan as a soft template, and chloroauric acid as a metal precursor to prepare 1-3nm gold nanoparticles. However, this method is only limited to the synthesis of gold nanoparticles and cannot be effectively extended to the synthesis of other metal nanomaterials (M.B...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B82Y40/00
Inventor 宋玉江李书双刘会园王莹
Owner ZHANGJIAGANG IND TECH RES INST CO LTD DALIAN INST OF CHEM PHYSICS CHINESE ACADEMY OF SCI
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