SnO<2-x>Se coated C material with core-shell structure and preparation method of SnO<2-x>Se coated C material

• Main Authors: XU LINGBO, CUI CAN, WU XIAOPING, GAO HAIQI, SONG CHANGSHENG, CHENG LIN, YANG JIAQUAN
• Format: Patent
• Language: Chinese; English
• Published: 14.01.2022
• Subjects: CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS

The invention relates to the technical field of semiconductor composite nanomaterials and preparation processes thereof, in particular to a core-shell structure SnO<2-x>Se coated C material and a preparation method thereof. The preparation method comprises the following steps: a, dissolving tin nitrate in methanol, and conducting stirring to form a tin nitrate solution; b, sequentially adding a certain amount of ammonium citrate, ethylenediamine tetraacetic acid disodium salt and sodium selenite into the tin nitrate solution, and conducting stirring for a certain time to form a mixed solution; c, adding the mixed solution into a tetrafluoroethylene reaction kettle, putting the reaction kettle into a constant temperature box, and conducting reacting at a constant temperature to obtain a product precursor; and d, calcining the precursor obtained in the step c in a tubular furnace under the protection of inert gas to obtain the SnO<2-x>Se coated C material. The method is simple in preparation process, low in equ