偶联吸附-光催化降解亚甲基蓝和马克西龙红。
Coupling Adsorption-Photocatalytic Degradation of Methylene Blue and Maxilon Red.
机构信息
Petrochemical Engineering Department, Pharos University in Alexandria, Alexandria, Egypt.
出版信息
J Fluoresc. 2022 Jul;32(4):1381-1388. doi: 10.1007/s10895-022-02934-1. Epub 2022 Apr 6.
The MB and MR removal process by two mechanisms of adsorption using rice straw (absence of UV light) and photodegradation on TiO surfaces was investigated. MB and MR removal efficiency were further intensified upon the sequential operation of adsorption followed by photocatalytic degradation over TiO under visible light irradiation. The TiO was used to remove methylene blue (MB) and Maxilon Red (MR) dye from aqueous media by continuous mode at 25 ± 2 °C, at pH 6.8 ± 0.2. Photo-illumination study revealed 75.81 and 65.51% MB and MR removal with the dose of 1 g/L TiO with an initial concentration of 5 mg/L within 120 min. This study can be deemed of potential applications for the removal of MB and MR dyes on an industrial level using the synergistic adsorption-photocatalytic oxidation approach. A probable photodegradation mechanism was proposed.
采用两种机制（无紫外光的吸附作用和 TiO 表面的光降解作用），利用稻草去除 MB 和 MR 的过程得到了研究。在可见光照射下，吸附作用后进行光催化降解的连续操作进一步提高了 MB 和 MR 的去除效率。TiO 用于在 25 ± 2°C、pH 值 6.8 ± 0.2 的条件下，以连续模式从水介质中去除亚甲蓝（MB）和马克西隆红（MR）染料。光照射研究表明，在 120 分钟内，初始浓度为 5mg/L 时，剂量为 1g/L 的 TiO 可以去除 75.81%的 MB 和 65.51%的 MR。这项研究可以被认为是在工业水平上使用协同吸附-光催化氧化方法去除 MB 和 MR 染料的潜在应用。提出了一种可能的光降解机制。
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