Method for preparing boron-and-nitrogen-doped cobalt-molybdenum-sulfur-oxygen compound/carbon composite material
A technology of sulfur-oxygen compounds and carbon composite materials, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve unseen problems
Active Publication Date: 2020-08-07
CHINA THREE GORGES UNIV
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The invention provides a method for preparing a boron-and-nitrogen-doped cobalt-molybdenum-sulfur-oxygen compound/carbon composite material. The method comprises the following steps: dissolving a molybdenum salt and a nitrogen carbon source in a volatile non-aqueous solvent to obtain a Mo-N-C precursor solution, coating a substrate, on which a cobalt sulfide array structure grows, with the precursor solution, and carrying out drying; and with Ar or N2 as a shielding gas and a carrier gas and mixed powder of sublimed sulfur element and boric acid as a solid evaporation source, carrying out a chemical vapor deposition reaction to obtain the composite material. According to the invention, sulfur steam formed by evaporation of elemental sulfur and oxygen introduced by decomposition of boric acid react with cobalt sulfide and molybdenum ions to generate a cobalt-molybdenum-sulfur-oxygen compound; nitrogen and carbon are gradually carbonized in a protective atmosphere to form a carbon material; and meanwhile, boron atoms and nitrogen atoms can be respectively doped into the cobalt-molybdenum-sulfur-oxygen compound and the carbon material in a form of replacing sulfur-oxygen atoms or carbon atoms in the CVD reaction process. The boron-nitrogen-doped cobalt-molybdenum-sulfur-oxygen compound/carbon composite material obtained according to a technical scheme of the invention has excellent multifunctional electrocatalytic performance.
Physical/chemical process catalystsElectrodes
Oxygen compoundComposite material +9
- Experimental program(8)
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