Simultaneous detection and removal of 2,4,6-trinitrophenyl phenol and dichromate by metal-organic framework

Ranhao Yin; Yiming Bu; Houjuan Zhu; Pengchen Su; Enyi Ye; Zibiao Li; Xian Jun Loh; Chao Yuan; Suhua Wang

doi:10.1016/j.saa.2023.122735

Simultaneous detection and removal of 2,4,6-trinitrophenyl phenol and dichromate by metal-organic framework

Spectrochim Acta A Mol Biomol Spectrosc. 2023 Sep 5:297:122735. doi: 10.1016/j.saa.2023.122735. Epub 2023 Apr 14.

Authors

Ranhao Yin¹, Yiming Bu¹, Houjuan Zhu², Pengchen Su¹, Enyi Ye³, Zibiao Li³, Xian Jun Loh⁴, Chao Yuan⁵, Suhua Wang⁶

Affiliations

¹ Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, People's Republic of China.
² Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), Singapore 138634, Singapore. Electronic address: zhu_houjuan@imre.a-star.edu.sg.
³ Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), Singapore 138634, Singapore; Institute of Sustainability for Chemicals, Energy and Environment (ISCE2) A*STAR (Agency for Science, Technology and Research), Singapore 138634, Singapore.
⁴ Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), Singapore 138634, Singapore.
⁵ Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, People's Republic of China. Electronic address: yuanchao@gdupt.edu.cn.
⁶ Guangdong Provincial Key Laboratory of Petrochemical Pollution Processes and Control, School of Environmental Science and Engineering, Guangdong University of Petrochemical Technology, Maoming 525000, People's Republic of China. Electronic address: wangsh@gdupt.edu.cn.

PMID: 37080055
DOI: 10.1016/j.saa.2023.122735

Abstract

2,4,6-trinitrophenyl phenol (TNP) and dichromate (Cr₂O₇^2-) have serious toxicological effects on environment. Therefore, it is very important to detect and remove TNP and Cr₂O₇^2- in environmental matrix. In this work, a dual-functional UiO type metal-organic framework (Zr-Sti) was synthesized for simultaneous detection and removal of those pollutants in aqueous solution. As for detection, Zr-Sti exhibited sensitive and selective fluorescence response to TNP and Cr₂O₇^2- with detection limit below μM level, and possible mechanism behind was proposed and partially supported by experiment data. In addition, adsorption capacity of the prepared Zr-Sti for TNP and Cr₂O₇^2- was further investigated to evaluate its performance in pollutant removal from aqueous solution, and the mechanism behinds the obtained high removal efficiency was proposed. These results together with the satisfied recovery for simultaneous detection of TNP and Cr₂O₇^2- in real sample, indicate the potential of the prepared Zr-Sti material in the field of environment monitoring and remediation.

Keywords: 2,4,6-trinitrophenyl phenol; Dichromate; Fluorescence sensor; Metal-organic framework.