HKUST-1@MoS_(2)热解产物的制备及其对水中磺胺嘧啶的吸附性能  

Preparation of HKUST-1@MoS_(2) pyrolysis products and its performance on sulfadiazine adsorption from aqueous solutions

作　　者：董瑞海 胡小佳 韩爱钊 邓林[1] 施周[1] DONG Ruihai;HU Xiaojia;Han Aizhao;DENG Lin;SHI Zhou(College of Civil Engineering,Water Security Technology and its Application Hunan Engineering Research Center,Changsha 410082,China;Hunan Provincial Architectural Design Institute Co.,Ltd.Changsha 410017,China;Power China Zhongnan Engineering Corporation Limited,Changsha 410014,China)

机构地区：[1]湖南大学土木工程学院,水安全保障技术及应用湖南省工程研究中心,长沙410082 [2]湖南省建筑设计院集团股份有限公司,长沙410017 [3]中国电建集团中南勘测设计研究院有限公司,长沙410014

出　　处：《环境工程学报》2025年第2期312-324,共13页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金面上资助项目(52270004)。

摘　　要：以典型铜基金属有机框架材料HKUST-1为基底材料,采用外层复合MoS_(2)和高温热解的方法制备了一种新型吸附剂HK-M-300。通过SEM、XRD、BET、FTIR、XPS等手段对吸附剂进行表征分析,优化了吸附剂制备过程中的原料复合比例和热解温度。对HK-M-300吸附磺胺嘧啶(SDZ)的性能进行了系统研究,考察了吸附剂投加量、pH、共存离子(Cl^(-)、NO_(3)^(-)、CO_(3)^(2-)和PO_(4)^(3-))等因素对吸附性能的影响。结果表明,制备的HK-M-300稳定性和吸附性能显著提高,当吸附剂投加量为0.2 g·L^(-1),SDZ的质量浓度为5 mg·L^(-1)时,HK-M-300在180 min内对SDZ的去除率高达96%,该数值比将HKUST-1直接热解制备的HK-300提高了54%,而吸附剂使用后溶液中的Cu金属泄漏量减少至HK-300的13%。拟二阶动力学模型可以更好地阐明吸附过程,吸附等温线可用Sips和Freundlich模型很好拟合。氢键作用和π—π相互作用是HK-M-300对SDZ吸附的主要机理。A type of new adsorbent(HK-M-300)was prepared by using a typical copper-based metal-organic skeleton material of HKUST-1 as the base material,MoS_(2) as the outer layer compounded material and a hightemperature pyrolysis method.SEM,XRD,BET,FTIR,XPS and other methods were used to characterize the physical and chemical properties of the adsorbents,the composite ratio of raw materials and pyrolysis temperature during the adsorbent preparation were optimized.The adsorption performance of sulfadiazine(SDZ)on HK-M-300 was systematically studied,and the effects of adsorbent dosage,pH,and coexisting ions(Cl^(-),NO_(3)^(-),CO_(3)^(2-)and PO_(4)^(3-))on the adsorption performance were also investigated.The results showed that the stability and adsorption performance of the prepared HK-M-300 increased significantly.When the adsorbent dosage was 0.2 g·L^(-1) and the mass concentration of SDZ solution was 5 mg·L^(-1),higher than 96%of the SDZ could be adsorbed by HK-M-300 within 180 min,which was 54%higher than that of HK-300 prepared by direct pyrolysis of HKUST-1,moreover,the leakage of Cu metal in the solution treated with HK-M-300 adsorbent was reduced to 13%of that treated with HK-300.The pseudo-second order kinetic model could better fit the adsorption process,and the adsorption isotherm could be well fitted by the Sips and Freundlich models.Hydrogen bonding andπ—πinteractions were the main mechanisms for the adsorption of SDZ by HK-M-300.

关 键 词：金属有机框架材料 二硫化钼 复合材料 磺胺嘧啶 吸附 

分 类 号：X703[环境科学与工程—环境工程]