Coal-based graphene quantum dot and preparation method thereof

• Main Authors: WANG SHUQING, HAN JIANGHUA, HUANG YUPING, GAO XIUZHI
• Format: Patent
• Language: Chinese; English
• Published: 03.05.2022
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The invention relates to a coal-based graphene quantum dot and a preparation method thereof.The method comprises the steps that a coal-based raw material and excessive nitric acid are mixed, the obtained mixture is subjected to a pre-oxidation reaction, and a pre-oxidation reaction mixture is obtained; carrying out microwave digestion treatment on the pre-oxidation reaction mixture to obtain an oxidation reaction product; and removing nitric acid in the oxidation reaction product, and washing and drying the obtained solid. The conditions of the method provided by the invention can reduce the severity of graphene quantum dots prepared by oxidation reaction, shorten the reaction time, and facilitate high-valued utilization of coal-based raw materials. 本发明涉及一种煤基石墨烯量子点及其制备方法，该方法包括：将煤基原料与过量的硝酸混合，使得到的混合物进行预氧化反应，得到预氧化反应混合物；将预氧化反应混合物进行微波消解处理，得到氧化反应产物；去除氧化反应产物中的硝酸，将所得固体进行洗涤并干燥。本发明的方法条件能够降低氧化反应制备石墨烯量子点的苛刻度，缩短反应时间，有利于实现煤基原料的高值化利用。