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Related Concept Videos

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Related Experiment Video

Updated: Jan 18, 2026

Scalable Stamp Printing and Fabrication of Hemiwicking Surfaces
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A Flexible, Self-Floating Composite for Efficient Water Evaporation.

Zhenxing Fang1,2, Shihui Jiao1, Boran Wang1

  • 1State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of Chemistry Jilin University Changchun 130012 P. R. China.

Global Challenges (Hoboken, NJ)
|October 1, 2019
PubMed
Summary
This summary is machine-generated.

A novel self-floating tungsten oxide (W18O49)/carbon foam composite was developed for efficient solar water evaporation. This flexible material significantly enhances evaporation rates, offering a promising solution for solar energy conversion applications.

Keywords:
carboncompositesdesalinationsolar energywater scarcity

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Renewable Energy

Background:

  • Solar energy conversion requires efficient materials for applications like water evaporation.
  • Existing methods for creating self-floating materials can be complex and costly.
  • Tungsten oxide (W18O49) shows potential for solar absorption but requires suitable matrices.

Purpose of the Study:

  • To develop a flexible, self-floating W18O49/carbon foam composite.
  • To enhance solar absorption and water evaporation efficiency.
  • To provide a simple and scalable synthesis method for solar energy applications.

Main Methods:

  • Fabrication of the composite via calcination of melamine foam with W18O49 in a nitrogen atmosphere.
  • Characterization of the material's self-floating property, solar absorption, and flexibility.
  • Evaluation of water evaporation rate under simulated sunlight and cyclic stability.

Main Results:

  • The synthesized composite exhibits self-floating properties achieved through a simple carbonization process.
  • The material demonstrates high solar absorption across the spectrum and an enhanced water evaporation rate 6.6 times higher than pure water.
  • Stable cyclic performance over ten cycles and flexibility for easy handling and reuse were confirmed.

Conclusions:

  • The W18O49/carbon foam composite is a promising, flexible material for efficient solar water evaporation.
  • The simple, scalable preparation method makes it suitable for practical solar energy conversion.
  • This material offers a cost-effective approach to harnessing solar energy for water purification and desalination.