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Updated: Jan 26, 2026

Solar-Driven Electrochemical Green Fuel Production from CO2 and Water Using Ti3C2Tx MXene-Supported CuZn and NiCo Catalysts
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A Yolk@Shell Photothermal Structure for Integrated Solar-Driven Undrinkable Water Purification and Thermoelectric

Minrui Zhan1, Xiang Fu1, Yumei He1

  • 1State Key Laboratory of New Textile Materials and Advanced Processing, School of Materials Science and Engineering, Wuhan Textile University, Wuhan, P. R. China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|January 25, 2026
PubMed
Summary

This study introduces a novel solar evaporator that efficiently purifies water and generates electricity simultaneously. It overcomes the challenge of balancing high evaporation rates with effective thermoelectric power generation.

Keywords:
porous silicone spongesolar‐driven interfacial vapor evaporationthermoelectric generationwastewater purificationyolk@shell structure

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Environmental Engineering

Background:

  • Solar-driven vapor generation and thermoelectric power generation offer solutions to freshwater scarcity and energy demands.
  • A key challenge is the trade-off between high water evaporation rates and efficient thermoelectric generation.

Purpose of the Study:

  • To develop a novel photothermal evaporator that integrates efficient water vapor generation and thermoelectric power generation.
  • To address the persistent challenge of balancing high evaporation speeds with effective thermoelectric performance.

Main Methods:

  • Fabrication of a yolk@shell structured photothermal evaporator (HSS@MNPs) using sol-gel and spray coating.
  • Utilizing a composite of silicone sponge, epoxy resin, and melanin nanoparticles.
  • Optimizing the position of the thermoelectric module within the photothermal structure.

Main Results:

  • The HSS@MNPs effectively purified various waste liquids.
  • Optimized TE module placement within the yolk@shell structure improved performance without compromising essential properties.
  • Achieved efficient and stable co-generation of water vapor (3.08-3.17 kg m⁻² h⁻¹) and thermoelectric power (135.4-144.6 mV) under simulated sunlight.

Conclusions:

  • The developed HSS@MNPs provide a viable strategy to overcome the trade-off between water evaporation and thermoelectric generation.
  • Demonstrated potential for outdoor application in addressing global freshwater and energy needs.