| Ag2CO3/Cu2O 复合材料的制备及其对染料的吸附性能 |
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| 引用本文：王楠,张兵宇,朱柯莹,陈振婷,陈胜文.Ag2CO3/Cu2O 复合材料的制备及其对染料的吸附性能[J].上海第二工业大学(中文版),2025,42(3):239-247 |
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| 中文摘要:采用液相还原法合成球形Cu2O, 并通过原位沉淀法制备不同比例的Ag2CO3/Cu2O 微纳球形复合材料。通过X射线衍射仪、扫描电子显微镜及全自动比表面积及孔隙度等表征技术分析Ag2CO3/Cu2O 的结构和形貌, 结果表明, Ag2CO3 成功负载至Cu2 O表面, 且具有更大的比表面积。吸附实验表明, 在25 ℃ 条件下, 5-Ag2CO3/Cu2O在60 min 内对50 mL、20 mg/L 酸性橙的最大吸附量为240.17 mg/g, 吸附效率达到97%, 且吸附过程为自发、吸热且以物理吸附为主。等温吸附模型与吸附动力学模型拟合结果表明, 5-Ag2CO3/Cu2O 对酸性橙的吸附行为符合Langmuir 单分子层吸附模型, 并遵循准一级动力学模型。此外, 经3 次吸附- 解吸循环实验后, 吸附剂对酸性橙的去除效率仍保持在70% 以上, 表明该材料具有一定的循环再生性能。 |
| 中文关键词:Ag2CO3/Cu2O 吸附 酸性橙 原位沉淀 |
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| Preparation of Ag2CO3/Cu2O Composites and Their Adsorption Properties for Dyes |
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| Abstract:Spherical Cu2O was synthesized by liquid phase reduction method, and Ag2CO3/Cu2O micro-nano spherical composites with different ratios were prepared by in-situ precipitation method. The structure and morphology were analyzed by characterization techniques such as X-ray diffraction, scanning electron microscope, and the fully automatic specific surface area and pore analyzer. The results show that Ag2CO3 is successfully loaded on the surface of Cu2O, and the composite exhibits a larger specific surface area. Adsorption experiments show that at 25 ℃, the maximum adsorption capacity of 5-Ag2CO3/Cu2O for 50 mL of 20 mg/L acid orange reaches 240.17 mg/g within 60 minutes, with an adsorption efficiency of 97%. Additionally, the adsorption process is spontaneous, endothermic, and dominated by physical adsorption. The fitting results of the isothermal adsorption model and adsorption kinetic model show that the adsorption behavior of acid orange by 5-Ag2CO3/Cu2O conforms to the Langmuir monolayer adsorption model and follows the pseudo-first-order kinetic model. In addition, after three adsorption-desorption cycle experiments, the removal efficiency of the adsorbent for acid orange remained above 70%, which indicates that the material has a certain cyclic regenerability. |
| keywords:Ag2CO3/Cu2O adsorption acid orange in-situ precipitation |
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