A kind of preparation method and application of cuo nanoparticle doped cu-mof/carbon dot composite catalyst

Abstract

The invention discloses a preparation method of a Cu-MOF / carbon dot composite catalyst doped with CuO nanoparticles and the application of the catalyst for electrocatalytic nitrogen reduction at room temperature, belonging to the technical fields of catalytic technology and nanocomposite materials. The main step is to convert the ligand H 6 L solution and Cu(NO 3 ) 2 3H 2 O and glucose were blended to obtain a raw material mixture; the raw material mixture was heated at 90°C for 2 days to obtain a glucose-doped polynitrogen Cu-MOF crystal; the glucose-doped polynitrogen Cu-MOF crystal was placed in the air atmosphere of a tube furnace Oxidation-pyrolysis at 300 °C for 2 h to prepare CuO nanoparticles-doped Cu-MOF / carbon dot composite catalyst. The raw materials used in the preparation of the catalyst have low cost and simple process, and the catalyst is used for electrocatalytic reduction of nitrogen into ammonia at room temperature, and has good catalytic performance and industrial prospect.

Description

technical field

[0001] The invention discloses a preparation method of a Cu-MOF / carbon dot composite catalyst doped with CuO nanoparticles and the application of the catalyst to electrocatalyze the reduction of nitrogen at room temperature into ammonia, belonging to the technical fields of catalyst technology and nanocomposite materials. Background technique

[0002] NH 3 It is one of the most important chemicals at present, and its annual output ranks first among all kinds of chemicals, and our country is the first to synthesize NH 3 As a large industrial country, as a high-energy-consuming industry, the synthesis of NH 3 Industry consumes 1-2% of the global energy, NH 3 Its downstream products are mainly agricultural chemical fertilizers, and others such as synthetic fibers, explosives, and industrial fuels are also important downstream products. modern synthetic NH 3 The industrialization of technology began in 1905. The German chemist Haber proved through a large num...