Constructing black titania with unique nanocage structure for solar desalination

Guilian Zhu, Jijian Xu, Wenli Zhao, Fuqiang Huang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

276 Scopus citations


Solar desalination driven by solar radiation as heat source is freely available, however, hindered by low efficiency. Herein, we first design and synthesize black titania with a unique nanocage structure simultaneously with light trapping effect to enhance light harvesting, well-crystallized interconnected nanograins to accelerate the heat transfer from titania to water and with opening mesopores (4-10 nm) to facilitate the permeation of water vapor. Furthermore, the coated self-floating black titania nanocages film localizes the temperature increase at the water-air interface rather than uniformly heating the bulk of the water, which ultimately results in a solar-thermal conversion efficiency as high as 70.9% under a simulated solar light with an intensity of 1 kW m-2 (1 sun). This finding should inspire new black materials with rationally designed structure for superior solar desalination performance.

Original languageEnglish (US)
Pages (from-to)31716-31721
Number of pages6
JournalACS Applied Materials and Interfaces
Issue number46
StatePublished - Nov 23 2016

Bibliographical note

Funding Information:
This work was financially supported from the National Key Research and Development Program (Grant No. 2016YFB0901600), NSF of China (Grant Nos. 61376056, 51502331, and 51402334), and the Science and Technology Commission of Shanghai (Grant Nos. 13JC1405700 and 14520722000).

Publisher Copyright:
© 2016 American Chemical Society.


  • black titania
  • light trapping
  • mesoporous
  • nanocage
  • photothermal
  • solar desalination

ASJC Scopus subject areas

  • General Materials Science


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