Preparation of a Novel Bi<sub>2</sub>MoO<sub>6</sub>/Ag/Ag<sub>2</sub>CrO<sub>4</sub> Catalyst with Promoted Visible Light Photodegradation of RhB Dye

作者：Rui Wang, Lin Dong, Minghuan Gao, Linna Guo, Tiesheng Li, Minghua Liu · 发表于：Catalysis Research · 年份：2022 · DOI：10.21926/cr.2202008 · 被引用次数：4 · 研究领域：Advanced Photocatalysis Techniques、TiO2 Photocatalysis and Solar Cells、Gas Sensing Nanomaterials and Sensors

A series of novel <strong>Bi<sub>2</sub>MoO<sub>6</sub>/Ag/Ag<sub>2</sub>CrO<sub>4</sub></strong> heterostructure photocatalysts (denoted as <strong>BA-X</strong>, X = 1, 3, 5, 10) were synthesized using a coprecipitation method. These photocatalysts were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), UV-vis spectroscopy, and X-ray photoelectron spectroscopy (XPS) and their photocatalytic properties were investigated. Compared with pure Bi<sub>2</sub>MoO<sub>6</sub> or Ag<sub>2</sub>CrO<sub>4</sub>, <strong>BA-5</strong> exhibited a higher photocatalytic property and broader light absorption. In addition, the surface plasmon resonance (SPR) effect of Ag enhanced the separation of photogenerated carriers. <strong>BA-5</strong> could be recycled at least five times, and XRD and SEM of <strong>BA-5</strong> during the cycles were measured, revealing that the crystal structure and morphology were changed with the increase in the number of cycles. The trapping agent experiments indicated that the holes had a more decisive impact on the degradation of RhB; the degradation mechanism was proposed as Type I.