Ternary heterojunction of cross-linked benzene Polymer/Bi2MoO6-Graphene oxide catalysts promote efficient adsorption and photocatalytic removal of oxytetracycline.

A ternary composite (KB/BMO-GO) consisting of graphene oxide, Bi 2 MoO 6 and crosslinked benzene polymer was prepared by solvothermal and in-situ deposition methods, which were used to promote the synergistic adsorption-photocatalytic degradation of the refractory pollutant oxytetracycline (OTC). A cycle involving the simultaneous adsorption and photocatalytic enhances the degradation performance of oxytetracycline. The 15% KB/BMO-GO sample exhibited the best synergistic adsorption-photocatalytic degradation performance, which has great potential in practical applications for low concentration refractory pollutants removal of water. [Display omitted] Antibiotics are refractory degradable organic pollutants that present a significant hazard to water environments. In this work, a ternary composite (KB/BMO-GO) comprising of graphene oxide (GO), Bi 2 MoO 6 (BMO), and a cross-linked benzene polymer (KB) was synthesized and applied to promote the synergistic adsorption-photocatalytic degradation of the refractory pollutant, oxytetracycline (OTC). The inclusion of GO and KB in the composite enhanced the OTC adsorption performance of the catalysts, and the construction of Z-scheme heterojunction promoted the photogenerated charge separation efficiency and broadened the range of light absorption, thereby enhancing the photocatalytic performance. Moreover, we compared the performance of catalysts loaded with different mass ratios of KB (x% KB/BMO-GO). Among them, the 15 % KB/BMO-GO catalyst sample had the best OTC degradation performance. Specifically, 15 % KB/BMO-GO could adsorb 69.7 % of OTC in 30 min, reaching an OTC degradation rate of 93.3 % under visible light irradiation. h+ and 1O 2 are the main active substances in the photocatalytic process. In addition, the catalysts are acid-alkali and salt-resistant, as well as good reusability. This study provides a valuable reference for the preparation of highly efficient photocatalysts for synergistic adsorption-photodegradation processes. [ABSTRACT FROM AUTHOR]