金属有机框架化合物NH<sub>2</sub>-MIL-101(Cr)对铅(Ⅱ)的吸附性能研究

doi:10.13228/j.boyuan.issn1000-7571.011726

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (2227 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要通过溶剂热法,制备出金属有机框架化合物NH₂-MIL-101(Cr)。使用X射线衍射仪(XRD)、场发射扫描电子显微镜(SEM)和全自动比表面积及微孔物理吸附和化学吸附分析仪对NH₂-MIL-101(Cr)的晶相结构、微观形貌和比表面积进行表征。结果表明,制备的NH₂-MIL-101(Cr)为正八面体形貌,比表面积高达1 656 m²/g。使用NH₂-MIL-101(Cr)对水体中Pb(Ⅱ)进行吸附,结果表明:在30 mg/L含Pb(Ⅱ)溶液中,加入0.03 g NH₂-MIL-101(Cr)吸附剂,振荡吸附100 min,达到吸附平衡,平衡吸附量为49.84 mg/g。NH₂-MIL-101(Cr)对Pb(Ⅱ)的吸附过程满足拟二级动力学和Langmuir吸附等温模型,说明NH₂-MIL-101(Cr)表面活性吸附位点分布均匀,对Pb(Ⅱ)的吸附属于均相单分子层化学吸附,实验饱和吸附量为71.25 mg/g。NH₂-MIL-101(Cr)吸附材料利用EDTA再生使用6次后,吸附量仅下降20.97%,说明NH₂-MIL-101(Cr)具有较好的再生循环使用性。取某电池车间经处理过的Pb(Ⅱ)质量浓度为30 mg/L的废水,加入0.03 g NH₂-MIL-101(Cr)吸附剂,控制pH值为6,振荡吸附100 min后,测定溶液中剩余的Pb(Ⅱ)质量浓度为0.1 mg/L(低于国家最高排放标准0.5 mg/L),说明NH₂-MIL-101(Cr)是一种良好的Pb(Ⅱ)去除剂。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	范文娟
	常会

关键词 ：金属有机框架化合物, NH₂-MIL-101(Cr), 铅(Ⅱ), 吸附, 再生, 废水

Abstract：The metal-organic frameworks, NH₂-MIL-101(Cr), were synthesized by solvothermal method. The crystal phase structure, microstructure morphology and specific surface area of NH₂-MIL-101(Cr) were characterized by X-ray diffractometer (XRD), scanning electron microscope (SEM), and fully automatic specific surface area and micropore physical and chemical adsorption analyzer. The results showed that NH₂-MIL-101(Cr) had an ortho-octahedral morphology with the specific surface area up to 1 656 m²/g. NH₂-MIL-101(Cr) was used for adsorption of Pb(Ⅱ) from an aqueous solution. The results showed that the adsorption equilibrium could be reached within 100 min under the following conditions: the mass concertation of Pb(Ⅱ) was 30 mg/L; the dosage of NH₂-MIL-101(Cr) was 0.03 g; the solution was shaken for adsorption. The equilibrium absorption capacity was 49.84 mg/g. The adsorption process of Pb(Ⅱ) by NH₂-MIL-101(Cr) conformed to the pseudo-second order kinetics and Langmuir isothermal adsorption model, which indicated that the active sites on surface of NH₂-MIL-101(Cr) were uniformly distributed. The adsorption of Pb(Ⅱ) belonged to homogeneous monolayer chemical process. The saturation adsorption capacity in experiments was 71.25 mg/g. The adsorption capacity of NH₂-MIL-101(Cr) only decreased by 20.97% after regeneration for 6 cycles using EDTA, indicating that NH₂-MIL-101(Cr) had excellent performance of regeneration. The wastewater containing 30 mg/L Pb(Ⅱ) was sampled from one battery plant. After adding 0.03 g of NH₂-MIL-101(Cr), the pH was adjusted to 6. The measured mass concentration of Pb(Ⅱ) was only 0.1 mg/L (which was lower than 0.5 mg/L in national maximum emission standard) after oscillation adsorption for 100 min, indicating that NH₂-MIL-101(Cr) was a good removal agent for Pb(Ⅱ).

Key words： metal-organic frameworks NH₂-MIL-101(Cr) lead(Ⅱ) adsorption regeneration wastewater

收稿日期: 2021-12-30

ZTFLH:	TQ424
	O647.33

基金资助:钒钛资源综合利用四川省重点实验室(2020FTSZ10);大学生创新训练项目(2021cxcy071,2021cxcy074)

通讯作者: 常会(1984—),男,副教授,博士,主要从事新能源和水处理研究;E-mail:chui20032801@126.com

作者简介: 范文娟(1983—),女,副教授,博士生,主要从事功能材料的制备及研究;E-mail:caicai2836@126.com

引用本文:

范文娟, 常会. 金属有机框架化合物NH₂-MIL-101(Cr)对铅(Ⅱ)的吸附性能研究[J]. 冶金分析, 2022, 42(8): 81-86. FAN Wenjuan, CHANG Hui. Study on adsorptive property of Pb(Ⅱ) by metal-organic frameworks NH₂-MIL-101(Cr). , 2022, 42(8): 81-86.

链接本文:

http://yjfx.chinamet.cn/CN/10.13228/j.boyuan.issn1000-7571.011726 或 http://yjfx.chinamet.cn/CN/Y2022/V42/I8/81

[1] Luo X,Ding L,Luo J.Adsorptive removal of Pb (Ⅱ) ions from aqueous samples with amino-functionalization of metal-organic frameworks MIL-101(Cr)[J].Journal of Chemical & Engineering Data,2015,60(6):1732-1743.
[2] 蒲秋梅,任凤莲,谭爱喜,等.新型功能介孔材料的合成及其对铅离子吸附性能研究[J].冶金分析,2012,2(10):45-49.
PU Qiumei,REN Fenglian,TAN Aixi,et al.Synthesis of novel functional mesoporous materials and its adsorption capacity to lead ions[J].Metallurgical Analysis,2012,32(10):45-49.
[3] 邢云,李素娟,李步海.交联壳聚糖对常见金属离子的吸附性能及机理探讨[J].冶金分析,2014,34(9):58-65.
XING Yun,LI Sujuan,LI Buhai.Discussion on the adsorption performance and mechanism of cross-linked chitosan to comm metal ions[J].Metallurgical Analysis,2014,34(9):58-65.
[4] Qw A,Yu T A,Lk B,et al.A novel 3D superelastic polyethyleneimine functionalized chitosan aerogels for selective removal of Cr(VI) from aqueous solution: performance and mechanisms[J].Chemical Engineering Journal,2021,425:131722.
[5] 胡天丁.乙二胺改性MIL-101的制备及其对土霉素吸附性能研究[D].昆明:昆明理工大学,2017.
[6] Lin Y,Kong C,Chen L.Direct synthesis of amine-functionalized MIL-101(Cr) nanoparticles and application for CO₂ capture[J].RSC advances,2012,2(16):6417-6419.
[7] Tian N,Jia Q M,Su H Y,et al.The synthesis of mesostructured NH₂-MIL-101(Cr) and kinetic and thermodynamic study in tetracycline aqueous solutions[J].Journal of Porous Materials,2016,23(5):1269-1278.
[8] Zang Y,Yue Q,Kan Y,et al.Research on adsorption of Cr(Ⅵ) by Poly-epichlorohydrin-dimethylamine (EPIDMA) modified weakly basic anion exchange resin D301[J].Ecotoxicology and Environmental Safety,2018,161:467-473.
[9] 丁琳.MIL-101和Zr-MOFs改性与煅烧材料的制备及其去除重金属性能研究[D].南昌:南昌航空大学,2016.
[10] 闫洪志,杨晓超,张斌,等.磁性氧化石墨烯对水中Pb²⁺吸附性能的研究[J].黑龙江大学自然科学学报,2016,33(5):656-663.
YAN Hongzhi,YANG Xiaochao,ZHANG Bin,et al.Adsorption properties of magnetic graphene oxide for Pb²⁺ in water[J].Journal of Natural Science of Heilongjiang University,2016,33(5):656-663.
[11] 陈巧和.磁性秸秆纤维素/聚乙烯亚胺的合成及其对重金属离子和染料吸附性能研究[D].成都:成都理工大学,2017.
[12] Mandal S,Calderon J,Marpu S B,et al.Mesoporous activated carbon as a green adsorbent for the removal of heavy metals and Congo red: Characterization, adsorption kinetics and isotherm studies[J].Journal of Contaminant Hydrology,2021,243:103869.
[13] Wang F,Wu P,Shu L,et al.High-efficiency adsorption of Cd(Ⅱ) and Co(Ⅱ) by ethylenediaminetetraacetic dianhydride-modified orange peel as a novel synthesized adsorbent[J].Environmental Science and Pollution Research,2021,29(17):25748-25758.
[14] 环境保护部,国家质量监督检验检疫总局.GB 25466—2010 铅、锌工业污染物排放标准[S].北京:中国环境科学出版社,2010.