One-step synthesis of Ag2S-TiO2 and its photocatalytic degradation of ethyl paraben wastewater
2020
Liu, Xian | Zhu, Lei | Wang, Xun | Meng, Xide
At first, naked TiO₂ was prepared by sol-gel method. Silver nitrate and thiourea were respectively used as silver source and sulfur source added to form a TiO₂ sol and Ag₂S polymer blend system. Then, the properties of Ag₂S-TiO₂ was one-step synthesized and investigated by photocatalytic experiment and material characterization. According to the characterization results, Ag₂S-TiO₂ is anatase with a band gap of 3.14 eV, a specific surface area of 39.80 m²/g, and an average pore diameter of 3.56 nm. The results of photocatalytic experiments show that Ag₂S-TiO₂ can efficiently remove ethyl paraben within 2 h. Quenching experiments show that both •OH and photogenerated holes have a large effect on photocatalytic performance.
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