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Method for preparing ultrathin noble metal film catalyst by heat collection strategy

A precious metal and catalyst technology, applied in the fields of materials science and engineering technology and chemistry, can solve the problems of inability to realize electroplating of insulating materials and high power

Inactive Publication Date: 2021-08-24
BEIJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ultra-thin atomic layer materials prepared by this method not only require a large amount of electrical energy, but also have the disadvantage of being unable to achieve electroplating of insulating materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of ultra-thin platinum nano-film materials at 1-400 °C.

[0024] Prepare material A: Dilute the concentration of chloroplatinic acid solution to 0.1mM / L, take 13.5uL of the above solution and evenly drop it to a size of 1cm 2 A clean and flat silicon wafer, the drop-coated silicon wafer is recorded as material A. The material A is quickly put into a muffle furnace at 400°C for a period of time, and then the reacted sample is quickly taken out to allow it to cool naturally to room temperature, and the ultra-thin platinum nano-film material can be obtained. The reaction atmosphere environment is inert gas or air, and the holding time is 5s, 10s, 15s, 20s, 25s, 30s.

Embodiment 2

[0026] Preparation of ultra-thin platinum nano-film materials at 1-450°C.

[0027] Prepare material A: Dilute the concentration of chloroplatinic acid solution to 0.1mM / L, take 13.5uL of the above solution and evenly drop it to a size of 1cm 2 A clean and flat silicon wafer, the drop-coated silicon wafer is recorded as material A. The material A is quickly put into a muffle furnace at 450°C for a period of time, and then the reacted sample is quickly taken out, and after it is naturally cooled to room temperature, an ultra-thin platinum nano-film material can be obtained. The reaction atmosphere environment is inert gas or air, and the holding time is 5s, 10s, 15s, 20s, 25s, 30s.

Embodiment 3

[0029] Preparation of ultra-thin platinum nano-film materials at 1-500 °C.

[0030] Prepare material A: Dilute the concentration of chloroplatinic acid solution to 0.1mM / L, take 13.5uL of the above solution and evenly drop it to a size of 1cm 2 A clean and flat silicon wafer, the drop-coated silicon wafer is recorded as material A. The material A is quickly put into a muffle furnace at 500°C for a period of time, and then the reacted sample is quickly taken out to allow it to cool naturally to room temperature, and the ultra-thin platinum nano-film material can be obtained. The reaction atmosphere environment is inert gas or air, and the holding time is 5s, 10s, 15s, 20s, 25s, 30s.

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Abstract

The invention relates to a method for preparing an ultrathin noble metal film catalyst by a heat collection strategy, and belongs to the field of material science and engineering technology and chemistry. The ultrathin noble metal film catalyst prepared by the method comprises gold (Au), platinum (Pt), ruthenium (Ru), rhodium (Rh), iridium (Ir), palladium (Pd) and various oxides of gold (Au), platinum (Pt), ruthenium (Ru), rhodium (Rh), iridium (Ir) and palladium (Pd). The preparation method comprises the steps: firstly, preparing a noble metal chlorate solution with a certain concentration, dropwise coating a silicon wafer as a material A, and rapidly changing the environment temperature to prepare the ultrathin noble metal film catalyst. The method has the advantages of simplicity in operation, controllable yield, high expansibility and the like, and has the advantages of easiness in operation, high yield, safety, reliability and the like compared with a traditional method for preparing a ultrathin noble metal film.

Description

[0001] (1) Technical field [0002] The invention relates to a method for preparing an ultra-thin precious metal film catalyst by a heat collection strategy, and belongs to the fields of material science and engineering technology and chemistry. [0003] (2) Background technology [0004] Since the first use of mechanical exfoliation to prepare graphene, the research enthusiasm for nanoscale two-dimensional materials has been increasing all over the world. So far, scientists have reported a variety of methods for preparing two-dimensional nanomaterials. MoS prepared using out-of-plane van der Waals interactions 2 and other materials, MXene two-dimensional materials that selectively etch atoms, and two-dimensional metal oxide nanomaterials fabricated by self-assembly or other wet chemical methods. Although there are various methods for the preparation of two-dimensional materials, the selection of the lattice structure of the raw material is often the most demanding, and vario...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/42B01J23/44B01J23/46B01J23/52B01J35/06
CPCB01J23/42B01J23/52B01J23/462B01J23/464B01J23/468B01J23/44B01J35/59
Inventor 雷鸣黄凯毕科赵泽璧
Owner BEIJING UNIV OF POSTS & TELECOMM
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