离子对UIO-66-2OH光催化性能的影响

实际废水中存在的离子会对有机污染物的光催化降解产生影响.以ZrCl4和2,5-二羟基对苯二甲酸为原料,通过水热合成法成功制备了金属有机骨架材料UIO-66-2OH.通过红外(IR)、X射线粉末衍射(XRD)、X射线光电子能谱(XPS)和扫描电子显微镜(SEM)对UIO-66-2OH的结构进行表征.利用水中常见的金属阳离...

Effect of Ions on Photocatalytic Performance of UIO-66-2OH

Photocatalytic degradation of organic pollutants in actual wastewater requires exploring the influence of ions on the performance of photocatalysts. In this work, ZrCl₄ and 2,5-dihydroxyterephthalic acid were used as raw materials, and the metal-organic framework material UIO-66-2OH was successfully prepared by the hydrothermal synthesis method. The structure of UIO-66-2OH was characterized by infrared (IR), X-ray powder diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and scanning electron microscope (SEM). The photocatalytic performance of UIO-66-2OH was explored by using common metal cations and inorganic anions in water. The studies have found that metal cations Fe³⁺ and inorganic anions HCO₃^-and CO₃^2-can accelerate the rate of photocatalytic degradation. However, the metal ions Na⁺, K⁺, Ca²⁺, Mg²⁺, Cu²⁺ and inorganic anions Cl^-, SO₄^2-, PO₄^3- can inhibit the photocatalytic performance, and the higher the ion valence, the more obvious the inhibition effect.