A bismuth based layer structured organic–inorganic hybrid material with enhanced photocatalytic activity

A bismuth-based organic–inorganic hybrid material with layered structure (BiO-BTCIE) was synthesized by taking advantage of an ion exchange reaction. The structure of BiO-BTCIE was examined by XRD, EXAFS, FT-IR, TG/DTA, etc. By replacing the HCOO− with BTC anions in the Bi2O22+ interlayer, the Bi2O22+ layer is distorted as revealed by the EXAFS, which lead to a longer life time of the photogenerated charge carriers and a higher photocatalytic activity of BiO-BTCIE (more than 10 times).

BiO-BTCIE is obtained via the ion exchange reaction, i.e. the HCOO− in BiOHCOO is changed to be BTC anions. The obtained BiO-BTCIE remains the layered structure of BiOHCOO, except a distortion of the Bi2O22+ layer. The distortion is assigned to the origin of the enhanced photocatalytic activity and longer life time of photogenerated charge carriers of BiO-BTCIE.Figure optionsDownload high-quality image (49 K)Download as PowerPoint slide