DataVXAdvanced MaterialsPaper
journal article·2024-07Open access

A Single Component, Single Layer Flexile Foam Evaporator with the Higher Efficiency for Water Generation

Ruoxin Li, Mingrui Wu, Haijun Ma, Yongqi Zhu, Hongyi Zhang, Qiaomei Chen, Chuhong Zhang, Yen Wei

Advanced Materials· Volume 36· Issue 29
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Source abstract

Abstract

Abstract One of the greenest and promising ways to solve the problem of freshwater crisis is surface solar steam generation from seawater. A great number of photothermal materials with multi‐component and multi‐layered delicate yet complex structures often suffer from either low evaporation rate or high energy loss. Here, this work presents a single component foam evaporator with steam generation rate of up to 4.32 kg m−2 h−1 under 1 sun irradiation. The evaporator is constructed from an aniline oligomer as a single light‐absorbing component, covalent linked with polyethylene glycol to form a monolithic polymer foam. Floating on the seawater, the foam has absorbance of 99.5% over the entire solar spectral range and low thermal conductivity (0.0077 W K−1m−1) that effectively retains heat in the material and at the interface. After 3 months of continuous outdoor natural sunlight irradiation, the evaporator maintains a stable and durable evaporation rate. Moreover, the materials have good mechanical properties (7.48 MPa young's modulus and 57.38% elongation at break) and excellent chemical resistance in 10 common organic solvents and aqueous solutions of pH = 1 to 14. This study provides a new system and strategy for desalination, steam power generation, treatment of polluted water and sewage, etc.
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Research context

Polymers

OpenAlex topics: Solar-Powered Water Purification Methods · Solar Thermal and Photovoltaic Systems · Membrane Separation Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology Department of Chemistry Tsinghua University Beijing 100084 China

State Key Laboratory of Urban Water Resource and Environment Harbin Institute of Technology Harbin 150090 China

State Key Laboratory of Polymer Materials Engineering Polymer Research Institute Sichuan University Chengdu 610065 China

MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology Department of Chemistry School of Materials Science and Engineering Tsinghua University Beijing 100084 China

Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China School of Life Sciences Ningxia University Yinchuan 750021 China

Department of Chemistry School of Materials Science and Engineering Tsinghua University Beijing 100084 China

Beijing University of Chemical Technology Beijing 100029 China

School of Materials Science and Engineering North Minzu University Yinchuan 750021 China

Department of Chemistry and Center for Nanotechnology Chung Yuan Christian University Chung Li District Taiwan Taoyuan 32023 China

Funding

State Key Laboratory of Polymer Materials Engineering · National Natural Science Foundation of China · State Key Laboratory of Urban Water Resource and Environment · Ministry of Agriculture and Rural Affairs of the People's Republic of China

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