Cobaltosic oxide quantum dot and preparation method thereof

Abstract

The invention provides a cobaltosic oxide quantum dot and a preparation method thereof. The preparation method includes: using short-chain alcohol as surfactant to wrap hexahydrate cobalt nitrate so as to form settled solution A, using long-chain alcohol as solvent to be well mixed with settled solution A so as to form cobalt nitrate reverse micelle solution, subjecting cobalt nitrate reverse micelle solution to microwave reaction to promote hydrolysis and purification of cobalt nitrate, and separating materials after microwave reaction to obtain the cobaltosic oxide quantum dot. The cobaltosic oxide quantum dot prepared by the method is 3-4 nanometers in particle size, has evident quantum confinement effect, can be well dispersed in water to form colloid, and is capable of generating hydrogen and oxygen by resolving pure water according to standard mole ratio 2:1 under visible light without load and mixing. The cobaltosic oxide quantum dot is also applicable to fields of fluorescopy, electrocatalysis, chemical catalysis, super capacitors and novel batteries.

Description

technical field

[0001] The invention belongs to the field of hydrogen energy preparation, and relates to a photocatalytic clean preparation technology of hydrogen energy, in particular to a quantum dot of tricobalt tetroxide and a preparation method thereof. Background technique

[0002] With the depletion of fossil energy such as oil, coal, and natural gas, and the increasing environmental problems, the development and utilization of clean and renewable energy has become a topic that governments at home and abroad attach great importance to. At present, the most abundant energy on the earth is solar energy, and the average annual solar energy projected onto the earth's surface is as high as 1.05×10 18 kWh, equivalent to 1.3×10 6 Ton of standard coal, and the distribution of solar energy reserves is more even, and the geographical influence is small. Therefore, the development and utilization of solar energy has become a research focus of scholars at home and abroad. [00...

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