Pu Jia-Yi, Wan Jin-Quan, Wang Yan, Ma Yong-Wen, Wu Shu-Bin
College of Environment and Energy, South China University of Technology, Guangzhou 510006, China.
Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, South China University of Technology, Guangzhou 510000, China.
Huan Jing Ke Xue. 2018 Jan 8;39(1):152-160. doi: 10.13227/j.hjkx.201703060.
Using Cu-MOF (HKUST-1) as a template, copper oxide was prepared by heat treatment under different temperatures in this study. The effect of treatment temperature on the composition and morphology of the products were studied. The catalytic abilities of the copper oxide products were tested through a series of experiments of activating peroxymonosulfate (PMS) to degrade RhB under different conditions. The results of XRD, SEM, and XPS show that the product is gradually transformed from a CuO/CuO mixture into pure CuO with the increase of heat treatment temperature. The original octahedron structure of HKUST-1 was collapsed. Under neutral pH conditions, when the dosage of PMS and CuO-650 was 1.00 mmol·L and 0.20 g·L, respectively, the total degradation of RhB (concentration of 0.10 mmol·L) could be completed within 90 min. In addition, CuO-650 also has many advantages, such as it can be applied within a wide range of pH values. In addition, the copper ion dissolution rate was low (1.309 mg·L at pH=3 and 0.987 mg·L at pH=7), and it has great recyclability and stability. These characteristics further proved that CuO-650 can be used as a promising catalyst for PMS activation.
本研究以铜基金属有机框架材料（HKUST-1）为模板，通过在不同温度下进行热处理制备了氧化铜。研究了处理温度对产物组成和形貌的影响。通过一系列在不同条件下活化过一硫酸盐（PMS）降解罗丹明B（RhB）的实验，测试了氧化铜产物的催化能力。X射线衍射（XRD）、扫描电子显微镜（SEM）和X射线光电子能谱（XPS）结果表明，随着热处理温度的升高，产物逐渐从氧化铜/氧化亚铜混合物转变为纯氧化铜。HKUST-1的原始八面体结构坍塌。在中性pH条件下，当PMS和CuO-650的用量分别为1.00 mmol·L和0.20 g·L时，90分钟内可实现对浓度为0.10 mmol·L的RhB的完全降解。此外，CuO-650还具有许多优点，例如它可以在较宽的pH值范围内应用。此外，铜离子溶解率较低（pH = 3时为1.309 mg·L，pH = 7时为0.987 mg·L），并且具有良好的可回收性和稳定性。这些特性进一步证明了CuO-650可作为一种有前景的PMS活化催化剂。
