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Graphene loaded metal nano composite material, and preparation method and application thereof

A nano-composite material and metal-loaded technology, which is applied in the field of nano-material preparation and application, can solve the problem of only 15% and achieve good catalytic performance

Active Publication Date: 2014-09-10
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Amit Dubey et al. used metallic iron to load KIT (a silicon nanomaterial) to achieve a reaction conversion rate of 8%, and a selectivity to benzyl alcohol of 50%. Yongjia Li et al. used heme-loaded graphene to catalyze the oxidation of toluene in liquid phase. The conversion rate reaches 9.6%, but the selectivity to benzyl alcohol is only 15%

Method used

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  • Graphene loaded metal nano composite material, and preparation method and application thereof
  • Graphene loaded metal nano composite material, and preparation method and application thereof
  • Graphene loaded metal nano composite material, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0022] Embodiment 1: the preparation of graphene supported copper nanocomposite material

[0023] Accurately weigh 375mg metal salt copper sulfate pentahydrate and dissolve it in deionized water to prepare 0.005mol / L copper sulfate pentahydrate solution and an appropriate amount of surfactant sodium citrate, mix it into the graphene oxide deionized aqueous solution, and ultrasonically 1h, make it completely dispersed, react at room temperature for 12h, and prepare a graphene oxide metal salt mixed solution. Add 4.8g of 30mL of 50% NaOH aqueous solution and 4mL of 80% hydrazine hydrate to the above mixed solution successively with a dropping funnel, control the dropping rate to 0.04mL for 1 minute, react at 80°C for 12h, filter, wash with water for 3 times, and wash with ethanol for 3 The second time, the graphene-loaded metal nanocomposite material was obtained by vacuum drying at 60°C. For the results, see figure 1 , the characteristic diffraction peak of graphite oxide disa...

Embodiment 2

[0024] Example 2: Preparation of graphene-supported manganese nanoparticle composites

[0025] According to the reaction conditions of Example 1, the difference is that the metal salt copper sulfate pentahydrate was replaced by manganese sulfate monohydrate, and the graphene-supported metal manganese nanomaterial was obtained after post-reaction treatment.

Embodiment 3

[0026] Embodiment 3: Preparation of graphene-loaded copper-manganese nanoparticle composite material

[0027] According to the reaction conditions of Example 1, the difference is that the metal salt copper sulfate pentahydrate is replaced by a mixed metal salt of manganese sulfate monohydrate and copper sulfate pentahydrate, and the graphene-supported copper-manganese metal nanomaterial is obtained after post-reaction treatment.

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Abstract

The invention belongs to the chemical field of nano materials, and in particular relates to a graphene loaded metal nano composite material, and a preparation method and application thereof. The invention discloses the graphene loaded metal nano composite material. Under the dispersion and bearing action of graphene, the composite material can be uniformly distributed; the size of the composite material is about 10-100nm. The composite material mainly consists of graphite and simple metal inorganic salt which serve as raw materials, water serving as a solvent, hydrazine hydrate serving as a reducing agent and a proper amount of a surfactant, and is reacted to obtain graphene loaded metal nano particles. The graphene loaded metal nano composite material has the advantages of low cost, high efficiency, energy conservation and the like, and embodiments excellent catalysis activity in benzyl oxidization, so that a low-cost, environment-friendly and high-efficiency nano composite material catalyst is supplied to industrial production.

Description

technical field [0001] The invention relates to the field of nanomaterial preparation and its application, in particular to a preparation of graphene-loaded metal nanocomposite material, a preparation method and its application in the field of catalysis. Background technique [0002] In recent years, carbon nanomaterials have become a hot spot in the field of materials research. The discovery of carbon nanotubes and fullerenes has attracted widespread attention from researchers all over the world. Graphene, also known as "single-layer graphite", is carbon atoms with sp 2 A single-layer two-dimensional crystal composed of hybrid orbitals arranged in a honeycomb lattice, due to its unique and perfect structure, graphene has excellent electrical, mechanical, thermal, optical and other properties and a particularly large specific surface area. These properties of graphene make it possible to be an excellent support for metal catalysts. [0003] At present, graphene-supported m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J23/34B01J23/50B01J23/745B01J23/755B01J23/46C07C33/22C07C47/54C07C63/06C07C205/19C07C205/44C07C205/57C07C201/12C07C39/11C07C37/00C07C33/46C07C29/48C07C45/28C07C51/285C07C63/68C07C47/55
Inventor 宋广亮朱红军冯亮于贤贺季金风何广科刘睿
Owner NANJING TECH UNIV
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