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Nanosheet prepared from transition metal oxide nano particles and preparation method thereof

A transition metal, nanoparticle technology, applied in nanotechnology, nickel oxide/nickel hydroxide, cobalt oxide/cobalt hydroxide, etc., can solve the problems of complex process, narrow application range, large particles, etc., and achieves simple operation and low cost. Inexpensive and the effect of increasing the specific surface area

Inactive Publication Date: 2017-06-20
HEILONGJIANG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The present invention aims to solve the technical problems of the existing methods for preparing transition metal oxide nanosheets, such as narrow application range, complex process, large particles, uneven size, and inability to synthesize on a large scale, and provides a transition metal oxide nanosheet Constituted nanosheets and methods of making the same

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  • Nanosheet prepared from transition metal oxide nano particles and preparation method thereof
  • Nanosheet prepared from transition metal oxide nano particles and preparation method thereof
  • Nanosheet prepared from transition metal oxide nano particles and preparation method thereof

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specific Embodiment approach 1

[0020] Specific embodiment one: in the present embodiment, the nano sheet that is made of tricobalt tetroxide nanoparticle is to use cobalt phthalocyanine as metal source, with graphene oxide as template, be the hydrazine hydrate of 20% (mass) as reducing agent with water content, with Distilled water is used as a medium and finally obtained by calcination; in terms of weight percentage, the ratio of raw materials is as follows: 0.22% graphene oxide, 0.90% cobalt phthalocyanine, 8.99% hydrazine hydrate and 89.89% distilled water; specific preparation method It is carried out according to the following steps: Step 1, adding graphene oxide into distilled water, ultrasonically vibrating for 30min at an ultrasonic frequency of 40kHz, adding cobalt phthalocyanine, and continuing ultrasonically vibrating for 1h at an ultrasonic frequency of 40kHz; Step 2 , Then add hydrazine hydrate, stir at 40°C for 1h, centrifuge and dry at 80°C; step 3, put it in a muffle furnace, calcine at a con...

specific Embodiment approach 2

[0033] Specific embodiment two: In this embodiment, the nanosheets made of ferric oxide nanoparticles are iron phthalocyanine as the metal source, graphene oxide as the template, and hydrazine hydrate with a water content of 20% (mass) as the reduction agent. The agent is obtained by calcination with distilled water as the medium; in terms of weight percentage, the ratio of raw materials is as follows: 0.46% graphene oxide, 1.94% iron phthalocyanine, 10.43% hydrazine hydrate and 87.17% distilled water; The specific preparation method is carried out according to the following steps: Step 1. Add graphene oxide into distilled water, ultrasonically vibrate for 50 minutes under the condition of ultrasonic frequency of 40 kHz, add iron phthalocyanine, and continue ultrasonic vibration for 4 hours under the condition of ultrasonic frequency of 40 kHz ;Step 2, then add hydrazine hydrate, stir at 20°C for 2h, centrifuge and dry at 80°C; Step 3, put it in a muffle furnace, and calcine at...

specific Embodiment approach 3

[0037] Specific embodiment three: in the present embodiment, the nanosheet made of nickel oxide nanoparticles is nickel phthalocyanine as a metal source, graphene oxide as a template, and hydrazine hydrate with a water content of 20% (mass) as a reducing agent, Using distilled water as a medium, it is finally obtained by calcination; in terms of weight percentage, the ratio of raw materials is as follows: 0.36% graphene oxide, 1.64% nickel phthalocyanine, 9.43% hydrazine hydrate and 88.57% distilled water; specific preparation The method is carried out according to the following steps: step 1, adding distilled water into graphene oxide, ultrasonically vibrating for 40 minutes under the condition of ultrasonic frequency of 40 kHz, adding nickel phthalocyanine, and continuing ultrasonic vibration for 2 hours under the condition of ultrasonic frequency of 40 kHz; step 2 , then add hydrazine hydrate, stir at 30°C for 1.5h, centrifuge and dry at 80°C; step 3, put it in a muffle furn...

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Abstract

The invention discloses nanosheet prepared from transition metal oxide nano particles and a preparation method thereof and belongs to the technical field of transition metal oxide nano materials. The nanosheet disclosed by the invention aims at solving the problems that a preparation method of existing transition metal oxide nanosheet has a narrow application range, complex technologies, larger particles, uneven sizes and no large-scale synthesis. The nanosheet disclosed by the invention utilizes transition metal phthalocyanine as a metal source, graphene oxide as a formwork, hydrazine hydrate as a reducing agent and distilled water as a medium and is finally prepared through roasting. The preparation method comprises the specific steps: 1, adding graphene oxide into the distilled water, supersonically vibrating, then adding the transition metal phthalocyanine and continuously supersonically vibrating; 2, adding the hydrazine hydrate, stirring, centrifuging, separating and drying; 3, roasting in constant temperature and naturally cooling to room temperature. A product disclosed by the invention is of a unique 2D wrinkle nanosheet structure and has even particle distribution, smaller size, excellent catalytic performance and better stability.

Description

technical field [0001] The invention belongs to the technical field of transition metal oxide nanometer materials; in particular, it relates to a nanosheet composed of transition metal oxide nanoparticle and a preparation method thereof. Background technique [0002] Due to the characteristics of ultra-thin two-dimensional (2D) nanostructures with huge specific surface area, mechanical flexibility, optical transparency, special energy band structure and stable physical and chemical properties, it has been widely used in catalysis, sensing, photovoltaic and electrochemistry, etc. The field has become a research hotspot at home and abroad in recent years. Today, when green chemistry and sustainable development have become a global consensus, non-precious metal catalysts, especially transition metal oxide-based catalysts, have attracted more and more attention from academia and industry. It has ideal performance and is an ideal alternative to traditional metal-based catalysts....

Claims

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Application Information

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IPC IPC(8): C01G51/04C01G53/04B82Y40/00C25B1/04C25B11/06
CPCC01G51/04C01G53/04C01P2002/72C01P2002/85C01P2004/04C01P2004/20C01P2004/64C25B1/04C25B11/077Y02E60/36
Inventor 陈志敏吴昊张佳琳吴峰肖菲王彬贺春英吴谊群
Owner HEILONGJIANG UNIV
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