无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2024, Vol. 56 ›› Issue (10): 55-63.doi: 10.19964/j.issn.1006-4990.2023-0549

• 研究与开发 • 上一篇    下一篇

NiCo普鲁士蓝类似物中空纳米泡的制备及其Cs+吸附性能研究

王航宇1,2(), 杜以法3, 郭霞4, 那钰萱4, 万玛措4, 周永全1()   

  1. 1.中国科学院青海盐湖研究所, 中国科学院盐湖资源综合高效利用重点实验室, 青海 西宁 810008
    2.中国科学院大学, 北京 100049
    3.临沂大学化学与化工学院, 山东 临沂 276300
    4.青海师范大学化学化工学院, 青海 西宁 810008
  • 收稿日期:2023-11-18 出版日期:2024-10-10 发布日期:2024-11-05
  • 通讯作者: 周永全(1980— ),男,研究员,研究方向为溶液化学,溶液结构,盐湖资源分离;E-mail:yongqzhou@163.com
  • 作者简介:王航宇(1996— ),男,硕士,研究方向为盐湖稀有元素分离提取;E-mail:wanghangyu21@mails.ucas.ac.cn
  • 基金资助:
    中国科学院稳定支持基础研究领域青年团队计划子课题(YSBR-039);青海盐湖所基础研究青年创新交叉团队基金项目(E255HX0101)

Study on preparation of NiCo Prussian blue analogue hollow nanobubbles and their Cs+ adsorption properties

WANG Hangyu1,2(), DU Yifa3, GUO Xia4, NA Yuxuan4, WAN Macuo4, ZHOU Yongquan1()   

  1. 1.Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining 810008,China
    2.University of Chinese Academy of Sciences,Beijing 100049,China
    3.School of Chemistry and Chemical Engineering,Linyi University,Linyi 276300,China
    4.Qinghai Normal University,College of Chemistry and Chemical Engineering,Xining 810008,China
  • Received:2023-11-18 Published:2024-10-10 Online:2024-11-05

摘要:

铯离子(Cs+)的高效分离在资源利用和生态安全上都具有重要意义。开发具有高容量和高选择性的Cs+吸附剂是一项具有挑战性的任务。以棱柱状四方乙酸钴镍前驱体为模板,采用自模板法绿色高效地成功合成了用于有效去除Cs+的NiCo-PBA中空纳米泡吸附剂(NiCo-PBA HNB)。通过傅里叶变换红外光谱仪(FT-IR)、X射线衍射仪(XRD)、透射电子显微镜(TEM)和能谱仪(EDS)等对NiCo-PBA HNB进行了表征。实验结果表明:NiCo-PBA HNB具有高比表面积(195.09 m2/g)和介孔(10.21 nm)分布。得益于其独特的纳米结构和孔特性,NiCo-PBA HNB能够在30 min内达到吸附平衡,其最大吸附容量可达317.59 mg/g,吸附过程符合准二级动力学模型。 即使在高浓度K+(0.1 mol/L)共存的情况下,分布系数(8.82×103 mL/g)仍保持在较高水平。此外,NiCo-PBA HNB的吸附机理主要为晶体内的K+与溶液中的Cs+的离子交换。

关键词: 自模板法, 镍钴普鲁士蓝类似物, 中空泡结构, 铯吸附剂

Abstract:

The efficient separation of cesium ions(Cs+) is significant in resource utilization and ecological security.Developing an adsorbent for Cs+ with high capacity and selectivity is challenging.In this work,nickel cobalt Prussian blue analog (NiCo-PBA) hollow nanobubble adsorbent(NiCo-PBA HNB) was successfully synthesized using a prism⁃shaped tetragonal cobalt nickel acetate precursor as a template using a self⁃template method to remove cesium ions(Cs+) from aqueous solutions effectively.The NiCo-PBA HNB was characterized by Fourier transform infrared spectroscopy(FT-IR),X-ray diffraction(XRD),transmission electron microscopy(TEM),and energy dispersive spectroscopy(EDS).NiCo-PBA HNB had a high specific surface area(195.09 m2/g) and a uniform mesoporous structure(10.21 nm).Thanks to its unique nanostructure and pore characteristics,NiCo-PBA HNB could reach adsorption equilibrium within 30 minutes,with a maximum adsorption capacity of 317.59 mg/g,and the adsorption process conformed to a quasi⁃second⁃order kinetic model.Even in high concentrations of K+(0.1 mol/L),the distribution coefficient(8.82×103 mL/g) remained at a high level.In addition,the adsorption mechanism of NiCo-PBA HNB mainly involved ion exchange between K+ in the crystal and Cs+ in the solution.

Key words: self template method, nickel cobalt prussian blue analogue, hollow bubble structure, cesium adsorbent

中图分类号: