| 新型球形介孔锰锌铁氧体的制备、表征及对亚甲基蓝的吸附特性 |
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| 引用本文： | 封温俐,洪珍珍,郭静,巩帅,张扬,牛志睿.新型球形介孔锰锌铁氧体的制备、表征及对亚甲基蓝的吸附特性[J].环境科学学报,2020,40(2):510-519. |
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| 作者姓名： | 封温俐 洪珍珍 郭静 巩帅 张扬 牛志睿 |
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| 作者单位： | 延安大学石油工程与环境工程学院,延安716000,延安大学石油工程与环境工程学院,延安716000,延安大学石油工程与环境工程学院,延安716000,延安大学石油工程与环境工程学院,延安716000,延安大学石油工程与环境工程学院,延安716000,延安大学石油工程与环境工程学院,延安716000 |
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| 基金项目： | 国家自然科学基金（No.21866031）；陕西省自然科学基础研究计划项目（No.2018JM2054）；陕西省教育厅专项科研计划项目（No.18JK0879）；延安大学博士科研启动项目（No.YDBK2017-03）；延安大学引导项目（No.YDY2017-10）；延安大学大创项目（No.D2017106） |
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| 摘 要： | 以废旧锌锰电池生物浸提液为前驱体、聚乙烯吡咯烷酮(PVP)为结构导向剂,采用水热法制备了一种新型球形介孔锰锌铁氧体(P-MZF).同时,利用扫描电镜(SEM)、比表面积(S_(BET))、X-射线衍射(XRD)、高分辨透射电镜(HRTEM)、选区电子衍射(SAED)、红外光谱分析(FT-IR)、X射线光电子能谱分析(XPS)和磁滞回线(VSM)等表征分析了制备的材料,并研究了其对亚甲基蓝(MB)的吸附特性.结果表明,相比于无PVP制备的样品,P-MZF的比表面积S_(BET)(126.7 m~2·g~(-1))、活性点位的增加大幅提升了对MB的化学吸附能力;吸附动力学和热力学分析表明,Pseudo second-order和Langmuir模型适合描述其对MB的吸附行为.此外,经过5次循环吸附-醇洗再生,P-MZF对MB的吸附效率仍可维持在93%以上.制备的P-MZF具有高吸附和磁回收简便的优点.
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| 关 键 词： | 水热合成 锰锌铁氧体 聚乙烯吡咯烷酮(PVP) 吸附特性 |
| 收稿时间： | 2019/8/10 0:00:00 |
| 修稿时间： | 2019/9/12 0:00:00 |
Synthesis and characterization of novel spherical mesoporous Mn-Zn ferrite and its adsorption properties of methylene blue |
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| FENG Wenli,HONG Zhenzhen,GUO Jing,GONG Shuai,ZHANG Yang and NIU Zhirui.Synthesis and characterization of novel spherical mesoporous Mn-Zn ferrite and its adsorption properties of methylene blue[J].Acta Scientiae Circumstantiae,2020,40(2):510-519. |
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| Authors: | FENG Wenli HONG Zhenzhen GUO Jing GONG Shuai ZHANG Yang and NIU Zhirui |
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| Institution: | School of Petroleum and Environment Engineering, Yan''an University, Yan''an 716000,School of Petroleum and Environment Engineering, Yan''an University, Yan''an 716000,School of Petroleum and Environment Engineering, Yan''an University, Yan''an 716000,School of Petroleum and Environment Engineering, Yan''an University, Yan''an 716000,School of Petroleum and Environment Engineering, Yan''an University, Yan''an 716000 and School of Petroleum and Environment Engineering, Yan''an University, Yan''an 716000 |
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| Abstract: | A novel spherical mesoporous Mn-Zn ferrite (P-MZF) was prepared via hydrothermal method using the bioleachate of waste Mn-Zn batteries as precursor and polyvinylpyrrolidone (PVP) as structure-directing agent. The sample was characterized by SEM, SBET, XRD, HRTEM, SAEM, FT-IR, XPS and VSM, and its adsorption properties of methylene blue (MB) was studied. Compared with the sample prepared without PVP, the increases of SBET (126.7 m2·g-1) and active site for P-MZF have greatly improved the chemical adsorption capacity of MB. The adsorption kinetics and thermodynamic results show that the adsorption behavior of P-MZF for MB was well represented by the pseudo-second-order and the Langmuir equations. In addition, the adsorption efficiency of P-MZF for MB could still be kept above 93% after 5 cycles of reuse, including five alcohol washing. Overall, the as-prepared P-MZF has the advantages of high adsorption and simple magnetic separation. |
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| Keywords: | hydrothermal method Mn-Zn ferrite PVP absorption characteristics |
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