Efficient separation of vitamins mixture in aqueous solution using a stable zirconium-based metal-organic framework

Xudong Zhao; Yuwei Zhao; Meiqi Zheng; Shuangxue Liu; Wenjuan Xue; Guohua Du; Ting Wang; Xinli Gao; Keke Wang; Jianshui Hu; Zhuqing Gao; Hongliang Huang

doi:10.1016/j.jcis.2019.08.024

Efficient separation of vitamins mixture in aqueous solution using a stable zirconium-based metal-organic framework

J Colloid Interface Sci. 2019 Nov 1:555:714-721. doi: 10.1016/j.jcis.2019.08.024. Epub 2019 Aug 7.

Authors

Xudong Zhao¹, Yuwei Zhao², Meiqi Zheng², Shuangxue Liu², Wenjuan Xue³, Guohua Du², Ting Wang², Xinli Gao⁴, Keke Wang⁵, Jianshui Hu², Zhuqing Gao², Hongliang Huang⁶

Affiliations

¹ College of Chemical and Biological Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China. Electronic address: zhaoxd@tyust.edu.cn.
² College of Chemical and Biological Engineering, Taiyuan University of Science and Technology, Taiyuan 030024, China.
³ State Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Separation Membranes, Tianjin Polytechnic University, Tianjin 300387, China.
⁴ Instrumental Analysis Center, Taiyuan University of Science and Technology, Taiyuan 030024, China.
⁵ State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
⁶ State Key Laboratory of Separation Membranes and Membrane Processes, National Center for International Joint Research on Separation Membranes, Tianjin Polytechnic University, Tianjin 300387, China. Electronic address: huanghongliang@tjpu.edu.cn.

PMID: 31416026
DOI: 10.1016/j.jcis.2019.08.024

Abstract

High-efficiency separation of niacin (NIA) and nicotinamide (NIC) still faces large challenge up to date. In this work, a stable zirconium-based metal-organic framework (DUT-67) was used to adsorb and separate NIA and NIC in aqueous solutions. The adsorption capacities for NIA and NIC at the concentration ratio of 1:1 were 110.2 mg g^-1 and 11.2 mg g^-1, respectively. Further study indicates that low ratio of NIA/ NIC is in favor of the separation. High temperature can restrain the adsorptions of NIA and NIC but promote the separation. Besides, DUT-67 can be well regenerated via a simple method. Mechanism analysis indicates that electrostatic interaction plays a critical role in the separation of these vitamins.

Keywords: B-vitamins; Electrostatic interaction; Metal-organic framework; Separation.

MeSH terms

Metal-Organic Frameworks / chemistry*
Particle Size
Solutions
Surface Properties
Vitamins / chemistry*
Water / chemistry
Zirconium / chemistry*

Substances

Metal-Organic Frameworks
Solutions
Vitamins
Water
Zirconium