| abstract |
The invention belongs to material chemistry technical fields, are related to a kind of nano SnO 2 ‑SnS 2 The chemical preparation process of Core-shell Structure Nanoparticles.It is characterized by comprising the following steps：Water-soluble tin salt is dissolved in alkaline aqueous solution, and the complexing agent containing sulfydryl is added；Persulfate aqueous solution or hydrogen peroxide are added dropwise thereto, and is persistently stirred to react, the colloidal sol obtained after reaction, powder is obtained after washed drying, powder is re-dispersed into polar solvent or vacuum drying is spare.Raw material of the present invention is cheap, can at normal temperatures limit the SnO2 SnS2 Core-shell Structure Nanoparticles of well-crystallized acetone gas detection in 1ppm or less.In addition to gas sensor field, products therefrom can be applied to the fields such as solar cell, photochemical catalyst. |