A post-synthetically modified porous organic polymer for photocatalytic water purification

Minhyeok Choi, Nem Singh, Subin Son, Ji Hyeon Kim, Minjung Kang, Su Hong Park, Dong Hoon Choi, Chang Seop Hong, Jong Seung Kim

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The incremental discharge of chemicals and textile waste into industrial effluents makes water unbearably polluted for humans and other living organisms. Conventional water treatment processes are efficient in degrading stable conjugated organic dye molecules. Therefore, sustainable technology for degrading toxic organic pollutants is in continuous demand. Heterogeneous photocatalytic degradation of organic pollutants has been advantageous because of its cost-effectiveness and recycling abilities. Herein, we developed a new porphyrin-based porous organic polymer (PNP) and modified it with platinum clusters to get the Pt@PNP which is endowed with enhanced photocatalytic degradation efficiency of toxic organic dyes in water. It effectively decomposed carcinogenic organic dyes methyl orange (MO) and rhodamine B (Rh B) into smaller organic compounds by generating reactive oxygen species (ROS) under mild light irradiation. The significant enhancement in the photocatalytic efficiency can be ascribed to the fine-tuned band positions of PNP and Pt clusters resulting in increased light absorption and restricted charge recombination. After the water purification process, this heterogeneous photocatalyst was also found to be easily separable and robust in recycling without any significant activity loss. This work presents an efficient method to enhance the porous organic polymer's (POP's) photocatalytic activity and pave the way to the development of photocatalytic water purification devices using modified POPs.

Original languageEnglish
Pages (from-to)2085-2092
Number of pages8
JournalMaterials Chemistry Frontiers
Volume7
Issue number10
DOIs
Publication statusPublished - 2023 Mar 13

Bibliographical note

Funding Information:
This research was supported by the National Research Foundation of Korea (CRI project no. 2018R1A3B1052702 and NRF-2019M3E5D1A01068998, J. S. Kim; and NRF-2021R1A2B5B03086313 and NRF-2019R1A6A1A11044070, C. S. Hong).

Publisher Copyright:
© 2023 The Royal Society of Chemistry.

ASJC Scopus subject areas

  • General Materials Science
  • Materials Chemistry

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