Novel n‐p‐n heterojunction of AgI/BiOI/UiO‐66 composites with boosting visible light photocatalytic activities

• DOI: 10.1002/aoc.6186
• Publication Date: 2021-03-17T07:20:02Z
• Authors: Min Zhu; Huimin Chen; Yu Dai; Xuanyu Wu; Zhiguo Han; Yu Zhu
• Keywords: Photodegradation; Visible spectrum

Antibiotics, considered as persistent organic pollutants, have harmful effect on the environment and human health. We aimed at designing fabricating ternary AgI/BiOI/UiO‐66 composites evaluate photocatalytic activities of tetracycline (TC) in water under visible light irradiation. X‐ray diffractometer (ХRD), scanning electron microscopy–energy dispersive spectroscopy (SEM‐EDS), transmission microscopy (TEM), Brunauer–Emmett–Teller (BET), ultraviolet–visible (UV‐vis) diffuse reflectance spectra (DRS) analyses were carried out to characterize composites. The effects pristine BiOI, UiO‐66, AgI loading ratios for TC photodegradation evaluated obtain optimal one ( 1‐ABU ), which can remove 90.1% with In batch experiment, influences pH, ion strength, concentration, dosage photocatalyst investigated. exhibited excellent stability including pH strength resistance certain degree. After recycled five times, still showed good degradation efficiency, indicating advanced ·OH h + active species are prime, whereas ·O 2 − act secondary during process. exhibits an n‐p‐n heterojunction, inhibit recombination photogenerated electron–hole pairs generate more species. This work highlights a reference design synthesis heterojunction performance.