Synthesis of Ag-coated on a wrinkled SiO2@TiO2 architectural photocatalyst: New method of wrinkled shell for use of semiconductors in the visible light range and penicillin antibiotic degradation

In this study, a facile, environmentally friendly, room-temperature synthesis of Ag-coated on microporous TiO2-based catalysts and their application as photocatalyst to degradation penicillin an antibiotic from pharmaceutical wastewater was investigated. The sol-gel method used for the preparation SiO2 SiO2@TiO2. Then, SiO2@TiO2 wrinkled using hydrothermal treatment. Finally, Ag plasmonic material doped via wet chemistry approach. synthesised photocatalysts were characterized different analyses such XRD, FTIR, RAMAN, FESEM, TEM, XPS. results showed that successfully coated TiO2 layer. performance studied in terms removal range visible light. band gap energy (Eg) after addition obtained 4.5 2.8–3.2 eV. Specific surface SiO2@WS-TiO2 found 293 329 m2/g respectively. indicated wrinkling coating can enhance activity penicillin. Furthermore, operating parameter pH, contact time, initial concentration, temperature, amount synthesized optimized. it Langmuir isotherm model is well fitted with experimental data predict kinetic degradation.