A catalyst based on platinum oxide alloy supported boron, nitrogen doped diamond and its preparation method and application

Abstract

The invention discloses a catalyst based on a platinum oxide alloy loaded boron and nitrogen doped diamond as well as a preparation method and application thereof. The preparation method of the catalyst comprises the following steps of dissolving a platinum metal salt and a non-noble metal salt in distilled water, then adding a boron and nitrogen doped diamond, and ultrasonically dispersing to obtain dispersion liquid; and adding the obtained dispersion liquid into a hydrothermal kettle to carry out a hydrothermal reaction, cooling to a room temperature, then standing, depositing, washing a deposit with water and ethanol, and vacuum-drying to obtain a product. According to the catalyst prepared by the preparation method, the use level of platinum is low; further, a non-noble metal is alsoused as a catalytic active component; the synergistic catalytic action is formed by the combination of a platinum oxide alloy and the boron doped diamond; the electronic structures of the platinum oxide alloy and the boron doped diamond are effectively regulated and optimized; thus, the production of ozone is more facilitated; the catalyst has high electrocatalytic activity and ultrahigh stability; the ozone generating current efficiency of an anode of an electrolytic ozone generator is obviously improved; and through being proven, the catalyst provided by the invention has the performance, inthe electrolysis of water to catalytically produce ozone, superior to that of lead dioxide, and has a wide application prospect.

Description

technical field The invention relates to a catalyst based on platinum oxide alloy loaded with boron and nitrogen doped diamond, its preparation method and application. Background technique Ozone (ozone, O 3 ), also known as active oxygen, is an unstable light blue gas at room temperature. Due to the strong oxidizing properties of ozone, the reaction will generate oxygen at the same time, so that a large number of anaerobic bacteria cannot survive. Ozone is a broad-spectrum, efficient, fast, safe, and non-secondary pollution sterilizing gas. Its sterilization speed is fast, it has no toxic and side effects, and it will not produce drug resistance, so it is widely used in medical and health care. Ozone is easy to decompose and cannot be stored, so it needs to be produced and used on site, so any place where ozone can be used must use an ozone generator. The traditional ozone generation technology is mostly the corona discharge method, which produces a large amount of ozon...

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Problems solved by technology

Lead dioxide has good electrical conductivity, but it is easily corroded and consumed by the generated ozone during use, resulting in a short lifespan

At present, there is no research report related to platinum oxide alloy and boron, nitrogen doped diamond as a catalyst for electrolysis of water to produce ozone

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