Chem. J. Chinese Universities ›› 2024, Vol. 45 ›› Issue (7): 20240138.doi: 10.7503/cjcu20240138

• Analytical Chemistry • Previous Articles     Next Articles

Preparation of Sulfur-containing Porous Aromatic Framework Materials and Their Dual Performance in Ultra-sensitive Detection and Simultaneous Removal of Mercury

LIU Xingyu1, ZHANG Xiaojing1, XIANG Tingting1, CHEN Shixin1, MA Shuo1, SHAO Huimin2, CUI Bo2, XIA Chunlong3, LI Yan1, BU Naishun1(), LI Cong3()   

  1. 1.School of Environment
    2.College of Chemistry,Liaoning University,Shenyang 110036,China
    3.Fushun Hydrological Bureau,Fushun 113000,China
  • Received:2024-03-25 Online:2024-07-10 Published:2024-05-17
  • Contact: BU Naishun, LI Cong E-mail:bunaishun@lnu.edu.cn;19692248@qq.com
  • Supported by:
    the National Natural Science Foundation of China(31972522);the Natural Science Foundation of Liaoning Province, China(2021-MS-149);the Liaoning Revitalization Talents Program, China(XLYC2007032);the Project of Fushun Hydrological Bureau of China, the Project of Liaoning Runzhong Water Supply Co., LTD, China and the College Students’ Innovative Entrepreneurial Training Plan Program of Liaoning University, China

Abstract:

Hg/Hg(II) is considered to be a highly toxic heavy metal to humans, and the preparation of new materials that can detect and remove toxic Hg2+ simultaneously and efficiently is an important support for the control of mercury pollution. In this study, a sulfur-containing porous aromatic framework material(named LNU-19) was synthesized by Suzuki coupling reaction, and its conjugated structure and flexible thiophene-linked fragment significantly enhanced its luminescence ability, and the material had good porosity, specific surface area and high affinity chelating site(thiophene group), realizing the dual functional application of LNU-19 to Hg2+. LNU-19 has excellent sensing performance such as high sensitivity, good selectivity, good visibility and real-time response, and has an adsorption capacity of 121.3 mg/g for Hg2+. In this study, the introduction of thiophene sites and the regulation of the skeleton structure provided a new way to optimize and improve the preparation strategy of porous aromatic frameworks.

Key words: Suzuki conjugation, Porous aromatic framework, Fluorescence detection, Mercury adsorption

CLC Number: 

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