School of Materials Science and Engineering, Shenyang University of Technology, Shenyang, 110870, China.
Environ Sci Pollut Res Int. 2021 Sep;28(35):48038-48052. doi: 10.1007/s11356-021-14102-2. Epub 2021 Apr 26.
Metallic glasses (MGs) with unique disordered atomic stacking structures exhibit excellent catalytic performance in wastewater treatment. The catalytic degradation of Orange II (AO II) aqueous solutions by four CuZr-based MG ribbons under such processing parameters as pH values, the dosage of ribbons, and temperature was investigated in this paper. The catalytic performance of the MG ribbons was characterized by using the degradation efficiency of the dye wastewater. The phase constituent, surface morphology, and chemical valence state of elements on the surface of MG ribbons before and after use were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS), respectively. The results indicate that the CuZrAlY MG ribbon has the best catalytic performance among the CuZrAlY (x = 0, 1, 3, 5) MGs in the degradation process, and the dye in the wastewater can almost be completely decolorized within 60 min under the conditions of pH = 2, the dosage of ribbons being 1.8 g/L and water bath temperature of 313 K, with the degradation efficiency and chemical oxygen demand removal being 96.05% and 51.73%, respectively. Furthermore, the CuZrAlY MG ribbon still shows superior structural stability and degradation performance after repeated use, and the corrosion pits on the MG surface promote the physicochemical reaction between the wastewater and the ribbons.
具有独特无序原子堆积结构的金属玻璃（MGs）在废水处理中表现出优异的催化性能。本文研究了在 pH 值、 ribbons 用量和温度等处理参数下，四种 CuZr 基 MG 带在橙 II（AO II）水溶液中的催化降解性能。通过染料废水的降解效率来表征 MG 带的催化性能。通过 X 射线衍射（XRD）、扫描电子显微镜（SEM）和 X 射线光电子能谱（XPS）分别分析了 MG 带使用前后的相组成、表面形貌和元素化学价态。结果表明，在 CuZrAlY（x = 0、1、3、5）MGs 的降解过程中，CuZrAlY MG 带具有最好的催化性能，在 pH = 2、ribbons 用量为 1.8 g/L 和水 浴温度为 313 K 的条件下，废水在 60 min 内几乎可以完全脱色，降解效率和化学需氧量去除率分别为 96.05%和 51.73%。此外，CuZrAlY MG 带在重复使用后仍表现出优异的结构稳定性和降解性能，MG 表面的腐蚀坑促进了废水与 ribbons 之间的物理化学反应。
