A general salt-resistant hydrophilic/hydrophobic nanoporous double layer design for efficient and stable solar water evaporation distillation

Yawei Yang; Hongyang Zhao; Zongyou Yin; Jianqiu Zhao; Xingtian Yin; Na Li; Dandan Yin; Yannan Li; Bo Lei; Yaping Du; Wenxiu Que

doi:10.1039/C8MH00386F

A general salt-resistant hydrophilic/hydrophobic nanoporous double layer design for efficient and stable solar water evaporation distillation†

Yawei Yang,

‡^a Hongyang Zhao,‡^b Zongyou Yin,

^c Jianqiu Zhao,^a Xingtian Yin,

^a Na Li,^b Dandan Yin,^b Yannan Li,^b Bo Lei,

^b Yaping Du

*^bd and Wenxiu Que*^a

Author affiliations

* Corresponding authors

^a Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, International Center for Dielectric Research, and Shaanxi Engineering Research Center of Advanced Energy Materials and Devices, School of Electronic & Information Engineering, Xi’an Jiaotong University, Xi’an 710049, Shaanxi, China
E-mail: wxque@mail.xjtu.edu.cn

^b Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710054, Shaanxi, China

^c Research School of Chemistry, The Australian National University, Canberra, Australian Capital Territory 2601, Australia

^d School of Materials Science and Engineering, National Institute for Advanced Materials, Center for Rare Earth and Inorganic Functional Materials, Nankai University, Tianjin 300350, China
E-mail: ypdu@nankai.edu.cn

Abstract

A novel and elegant hydrophilic/hydrophobic nanoporous double layer structure was designed and developed for efficient long-term water desalination. It contained a hydrophobic salt-resistant hierarchical layer of well-defined Cu₂SnSe₃ (or Cu₂ZnSnSe₄) nanosphere arrays for broad solar harvesting and water vapor evaporation, and a hydrophilic filter membrane for continuous water supply and vapor generation. The as-fabricated self-floatable devices achieve remarkable solar water evaporation performances (average evaporation rate: 1.657 kg m⁻² h⁻¹ and solar thermal conversion efficiency: 86.6% under one sun) with super stability for water distillation from seawater and wastewater containing organic dyes, heavy metals and bacteria.

This article is part of the themed collections: Materials Horizons 10th anniversary regional spotlight collection: China and Materials Horizons Most Popular Articles

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A general salt-resistant hydrophilic/hydrophobic nanoporous double layer design for efficient and stable solar water evaporation distillation†

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A general salt-resistant hydrophilic/hydrophobic nanoporous double layer design for efficient and stable solar water evaporation distillation

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