Sandwich Photothermal Membrane with Confined Hierarchical Carbon Cells Enabling High-Efficiency Solar Steam Generation

Cheng Tian, Jing Liu, Ruofan Ruan, Xinlong Tian, Xiaoyong Lai, Lei Xing, Yaqiong Su, Wei Huang (Corresponding author), Yang Cao (Corresponding author), Jinchun Tu (Corresponding author)

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)

Abstract

Solar-driven vaporization is a sustainable solution to water and energy scarcity. However, most of the present evaporators are still suffering from inefficient utilization of converted thermal energy. Herein, a universal sandwich membrane strategy is demonstrated by confining the hierarchical porous carbon cells in two energy barriers to obtain a high-efficiency evaporator with a rapid water evaporation rate of 1.87 kg m−2 h−1 under 1 sun illumination, which is among the highest performance for carbon-based and wood-based evaporators. The significantly enhanced evaporation rate is mainly attributed to the inherently optimized porous evaporation mode derived from the hierarchical hollow structures of pollen carbon cells, and the synergistically regulated water transporting and thermal management performance of the sandwich membrane. Moreover, the constructed sandwich membrane also exhibits excellent self-regenerating performance in simulated seawater and high salinity water. The developed device can maintain an average evaporation rate of 4.3 L m−2 day−1 in a 25 day consecutive outdoor test.

Original languageEnglish
Article number2000573
Number of pages10
JournalSmall
Volume16
Issue number23
Early online date6 May 2020
DOIs
Publication statusPublished - 1 Jun 2020

Keywords

  • energy confinement
  • hierarchical carbon cells
  • sandwich photothermal membranes
  • solar desalination
  • steam generation

Fingerprint

Dive into the research topics of 'Sandwich Photothermal Membrane with Confined Hierarchical Carbon Cells Enabling High-Efficiency Solar Steam Generation'. Together they form a unique fingerprint.

Cite this