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首页|期刊导航|高等学校化学学报|P掺杂煤沥青基多孔炭的制备及对废水中广谱抗生素的吸附性能

P掺杂煤沥青基多孔炭的制备及对废水中广谱抗生素的吸附性能OA北大核心CSTPCD

Preparation of P-doped Coal Pitch-based Porous Carbon and Its Adsorption Performance for Broad-spectrum Antibiotics in Wastewater

中文摘要英文摘要

以煤沥青为碳源,一水合次亚磷酸钠为磷源,氧化镁为模板耦合KOH活化,采用一步法制备了多孔炭(CPCx);并采用扫描电子显微镜、氮气吸附-脱附仪、傅里叶变换红外光谱和X射线光电子能谱等对炭材料进行了表征,考察了CPCx对土霉素和氯霉素的吸附性能.结果表明,当煤沥青与磷源的质量比为2∶1时,制得的CPC2.0总比表面积和微孔比表面积分别为2739和2353 m2/g,平均孔径为3.78 nm;苯基吸收峰有所加深,出现新的P—O伸缩振动峰;碳材料表面的磷及磷构型中最稳定的C3—P=O官能团含量分别达0.45%和37.7%(摩尔分数);Langmuir模型和拟二级动力学模型能更好地描述CPC2.0对抗生素的吸附过程,CPC2.0对土霉素和氯霉素的最大吸附容量分别为1780和1122 mg/g,表现出优异的吸附性能.

P-doped porous carbon(CPCx)was prepared by one-step method with coal tar pitch as carbon,sodium hypophosphite monohydrate as phosphorus sources and MgO as template coupled with KOH activation.CPCx were characterized by SEM,BET,FTIR,XPS,and the adsorption properties of porous carbon for oxytetracycline and chloramphenicol were investigated.When the mass ratio of coal tar pitch to phosphorus source is 2∶1,the BET results show that the total specific surface area and the microporous specific surface area of as-made CPC2.0 are 2739 and 2353 m2/g,respectively,and the average pore size is 3.78 nm.The results of FTIR indicate that the phenyl absorption peak for CPCx is deepened compared to the original carbon,as well as a new stretching vibration peak of P—O is displayed.The XPS results demonstrate that the P content and the most stable C3—P=O functional group content of phosphorus configuration on the surface of carbon materials are 0.45%and 37.7%(molar fraction).The adsorption process of antibiotics by CPC2.0 can be better described by Langmuir model and pseudo second-order kinetic model,and the maximum adsorption capacities of CPC2.0 for oxytetracycline and chloramphenicol are 1780 and 1122 mg/g,respectively,showing better adsorption performance.

余谟鑫;史文旭;孙宇航;张晨;王晓婷

安徽工业大学化学与化工学院,马鞍山 243000||中钢天源股份有限公司,马鞍山 243000安徽工业大学化学与化工学院,马鞍山 243000安徽工业大学化学与化工学院,马鞍山 243000||马钢集团股份有限公司,马鞍山 243000

化学

多孔炭吸附磷掺杂抗生素

Porous carbonAdsorptionPhosphorus dopingAntibiotic

《高等学校化学学报》 2024 (004)

33-44 / 12

安徽省博士后科研项目(批准号:2021B547)和安徽省教育厅自然科学研究项目(批准号:KJ2021A0399)资助. Supported by the Anhui Province Postdoctoral Research Project,China(No.2021B547)and the Anhui Provincial Department of Education Natural Science Research Project,China(No.KJ2021A0399).

10.7503/cjcu20230481

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