Bi2s3/zns composites comprising s-bi double defect and preparation method thereof

Abstract

This application discloses Bi2S3/ZnS composites comprising S—Bi double defect and its preparation method. The preparation method includes: bismuth nitrate pentahydrate is dissolved in mannitol solution to obtain solution A; zinc chloride is dissolved in water to obtain solution B; solution A is mixed with solution B, L-cysteine is added, and then obtained by hydrothermal reaction. The method described in this application can obtain Bi2S3/ZnS composites containing both cationic Bi defects and anionic S defects. The composite material can inhibit the recombination of photogenerated electron-hole pairs while promoting the photogenerated charge transfer rate, and effectively improve the ability of photocatalytic reduction of carbon dioxide.

Dependencies are inferred from the claim text.