Constructing hierarchically hydrophilic/superhydrophobic ZIF-8 pattern on soy protein towards a biomimetic efficient water harvesting material
| Autor: | Xiu-Li Wang, Wen-Yan Xie, Yu-Zhong Wang, Huan Liu, Fei Song |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Atmospheric water Materials science General Chemical Engineering Crystal growth 02 engineering and technology General Chemistry Polymer Dynamic control 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Industrial and Manufacturing Engineering Water collection 0104 chemical sciences Rainwater harvesting chemistry.chemical_compound chemistry Chemical engineering Environmental Chemistry Stearic acid 0210 nano-technology Soy protein |
| Zdroj: | Chemical Engineering Journal. 369:1040-1048 |
| ISSN: | 1385-8947 |
| DOI: | 10.1016/j.cej.2019.03.152 |
| Popis: | Inspired by the Stenocara beetle that can collect water from moist air in the Namib desert, here, we propose a simple dynamic control of crystal growth of ZIF on a natural polymer, soy protein. By adjusting the precursor concentration as well as the crystal growth time, hierarchical micro-/nano-crystals are constructed on the protein film surface. Taking advantage of the size difference of such crystals, selectively hydrophobic modification with a low surface-energy agent, stearic acid, can be performed on the surface, creating controllably hydrophilic/superhydrophobic patterns in favor of efficient water harvesting from fog. The effects of the as-prepared patterns on the water condensation behavior and collection efficiency are investigated; the maximum water collection efficiency, notably, can reach as high as 917.6 mg·cm−2·h−1. The results suggest that the biomimetic films hold a potential application in atmospheric water collection and the simple pattern-constructing approach is helpful to develop functional surface-patterned materials. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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