Constructing black titania with unique nanocage structure for solar desalination

Guilian Zhu; Jijian Xu; Wenli Zhao; Fuqiang Huang

doi:10.1021/acsami.6b11466

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: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

345 Citations (Scopus)

Abstract

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. © 2016 American Chemical Society.

Original language	English
Pages (from-to)	31716-31721
Journal	ACS Applied Materials and Interfaces
Volume	8
Issue number	46
DOIs	https://doi.org/10.1021/acsami.6b11466
Publication status	Published - 23 Nov 2016
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

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).

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 6 Clean Water and Sanitation
SDG 7 Affordable and Clean Energy

Research Keywords

black titania
light trapping
mesoporous
nanocage
photothermal
solar desalination

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AU - Zhu, Guilian

AU - Xu, Jijian

AU - Zhao, Wenli

AU - Huang, Fuqiang

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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N2 - 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. © 2016 American Chemical Society.

AB - 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. © 2016 American Chemical Society.

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KW - light trapping

KW - mesoporous

KW - nanocage

KW - photothermal

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Constructing black titania with unique nanocage structure for solar desalination

Abstract

Bibliographical note

Funding

UN SDGs

Research Keywords

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