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Updated: Sep 16, 2025

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A Synthetic Hydrophyte for Sunlight-Driven Water Purification.

Qian'en Huang1,2, Xiaoshan Zheng1,2, Zhenhua Pan3

  • 1State Key Laboratory of Soil Pollution Control and Safety, Zhejiang University, Hangzhou 310058, China.

Environmental Science & Technology
|July 9, 2025
PubMed
Summary

A novel synthetic hydrophyte effectively removes persistent pharmaceutical and personal care products (PPCPs) from water. This artificial plant mimics natural processes for efficient pollutant degradation, offering a sustainable solution for water purification.

Keywords:
biomimeticpharmaceutical and personal care products (PPCPs)photosynthesisreactive oxygen species (ROS)synthetic hydrophytewater purification

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Area of Science:

  • Environmental Science
  • Materials Science
  • Chemical Engineering

Background:

  • Pharmaceutical and personal care products (PPCPs) contaminate natural waters, challenging ecosystem health.
  • Natural aquatic plants have limitations in degrading persistent PPCPs, necessitating advanced purification methods.

Purpose of the Study:

  • To develop a synthetic hydrophyte for efficient degradation of recalcitrant PPCPs.
  • To mimic natural hydrophyte functions: photosynthesis, pollutant degradation, and extraction.

Main Methods:

  • Fabrication of a synthetic hydrophyte with artificial leaves (CoOₓ/Mo:BiVO₄/Pd), stem (FeOCl), and root (poly(vinylidene fluoride)).
  • Utilized artificial leaves to photosynthesize hydrogen peroxide (H₂O₂), activating hydroxyl radicals (•OH) in the stem for pollutant degradation.
  • Assessed degradation rates and efficiency against natural hydrophytes under various conditions.

Main Results:

  • Achieved 85.0-99.5% degradation of recalcitrant PPCPs within 8 hours.
  • Outperformed natural hydrophytes (Hydrocotyle verticillata, Canna indica) by 8.6-16.1-fold in pollutant removal efficiency.
  • Demonstrated high versatility across diverse pH, temperature, and water matrix conditions.

Conclusions:

  • The synthetic hydrophyte offers an efficient and sustainable approach for removing recalcitrant PPCPs from natural waters.
  • Sunlight-driven water purification using this artificial plant presents a promising new technology.
  • Addresses the growing challenge of PPCP pollution in aquatic environments.