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Facile Preparation of Robust Superhydrophobic/Superoleophilic TiO(2)-Decorated Polyvinyl Alcohol Sponge for Efficient Oil/Water Separation

[Image: see text] Oily wastewater and oil spills pose a threat to the environment and human health, and porous sponge materials are highly desired for oil/water separation. Herein, we design a new superhydrophobic/superoleophilic TiO(2)-decorated polyvinyl alcohol (PVA) sponge material for efficient...

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Autores principales: He, Zhiwei, Wu, Hanqing, Shi, Zhen, Kong, Zhe, Ma, Shiyu, Sun, Yuping, Liu, Xianguo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8892669/
https://www.ncbi.nlm.nih.gov/pubmed/35252699
http://dx.doi.org/10.1021/acsomega.1c06775
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author He, Zhiwei
Wu, Hanqing
Shi, Zhen
Kong, Zhe
Ma, Shiyu
Sun, Yuping
Liu, Xianguo
author_facet He, Zhiwei
Wu, Hanqing
Shi, Zhen
Kong, Zhe
Ma, Shiyu
Sun, Yuping
Liu, Xianguo
author_sort He, Zhiwei
collection PubMed
description [Image: see text] Oily wastewater and oil spills pose a threat to the environment and human health, and porous sponge materials are highly desired for oil/water separation. Herein, we design a new superhydrophobic/superoleophilic TiO(2)-decorated polyvinyl alcohol (PVA) sponge material for efficient oil/water separation. The TiO(2)–PVA sponge is obtained by firmly anchoring TiO(2) nanoparticles onto the skeleton surface of pristine PVA sponge via the cross-linking reactions between TiO(2) nanoparticles and H(3)BO(3) and KH550, followed by the chemical modification of 1H,1H,2H,2H-perfluorodecyltrichlorosilane. The as-prepared TiO(2)–PVA sponge shows a high water contact angle of 157° (a sliding angle of 5.5°) and an oil contact angle of ∼0°, showing excellent superhydrophobicity and superoleophilicity. The TiO(2)–PVA sponge exhibits excellent chemical stability, thermal stability, and mechanical durability in terms of immersing it in the corrosive solutions and solvents, boiling it in water, and the sandpaper abrasion test. Moreover, the as-prepared TiO(2)–PVA sponge possesses excellent absorption capacity of oils or organic solvents ranging from 4.3 to 13.6 times its own weight. More importantly, the as-prepared TiO(2)–PVA sponge can separate carbon tetrachloride from the oil–water mixture with a separation efficiency of 97.8% with the aid of gravity and maintains a separation efficiency of 96.5% even after 15 cyclic oil/water separation processes. Therefore, the rationally designed superhydrophobic/superoleophilic TiO(2)–PVA sponge shows great potential in practical applications of dealing with oily wastewater and oil spills.
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spelling pubmed-88926692022-03-03 Facile Preparation of Robust Superhydrophobic/Superoleophilic TiO(2)-Decorated Polyvinyl Alcohol Sponge for Efficient Oil/Water Separation He, Zhiwei Wu, Hanqing Shi, Zhen Kong, Zhe Ma, Shiyu Sun, Yuping Liu, Xianguo ACS Omega [Image: see text] Oily wastewater and oil spills pose a threat to the environment and human health, and porous sponge materials are highly desired for oil/water separation. Herein, we design a new superhydrophobic/superoleophilic TiO(2)-decorated polyvinyl alcohol (PVA) sponge material for efficient oil/water separation. The TiO(2)–PVA sponge is obtained by firmly anchoring TiO(2) nanoparticles onto the skeleton surface of pristine PVA sponge via the cross-linking reactions between TiO(2) nanoparticles and H(3)BO(3) and KH550, followed by the chemical modification of 1H,1H,2H,2H-perfluorodecyltrichlorosilane. The as-prepared TiO(2)–PVA sponge shows a high water contact angle of 157° (a sliding angle of 5.5°) and an oil contact angle of ∼0°, showing excellent superhydrophobicity and superoleophilicity. The TiO(2)–PVA sponge exhibits excellent chemical stability, thermal stability, and mechanical durability in terms of immersing it in the corrosive solutions and solvents, boiling it in water, and the sandpaper abrasion test. Moreover, the as-prepared TiO(2)–PVA sponge possesses excellent absorption capacity of oils or organic solvents ranging from 4.3 to 13.6 times its own weight. More importantly, the as-prepared TiO(2)–PVA sponge can separate carbon tetrachloride from the oil–water mixture with a separation efficiency of 97.8% with the aid of gravity and maintains a separation efficiency of 96.5% even after 15 cyclic oil/water separation processes. Therefore, the rationally designed superhydrophobic/superoleophilic TiO(2)–PVA sponge shows great potential in practical applications of dealing with oily wastewater and oil spills. American Chemical Society 2022-02-14 /pmc/articles/PMC8892669/ /pubmed/35252699 http://dx.doi.org/10.1021/acsomega.1c06775 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle He, Zhiwei
Wu, Hanqing
Shi, Zhen
Kong, Zhe
Ma, Shiyu
Sun, Yuping
Liu, Xianguo
Facile Preparation of Robust Superhydrophobic/Superoleophilic TiO(2)-Decorated Polyvinyl Alcohol Sponge for Efficient Oil/Water Separation
title Facile Preparation of Robust Superhydrophobic/Superoleophilic TiO(2)-Decorated Polyvinyl Alcohol Sponge for Efficient Oil/Water Separation
title_full Facile Preparation of Robust Superhydrophobic/Superoleophilic TiO(2)-Decorated Polyvinyl Alcohol Sponge for Efficient Oil/Water Separation
title_fullStr Facile Preparation of Robust Superhydrophobic/Superoleophilic TiO(2)-Decorated Polyvinyl Alcohol Sponge for Efficient Oil/Water Separation
title_full_unstemmed Facile Preparation of Robust Superhydrophobic/Superoleophilic TiO(2)-Decorated Polyvinyl Alcohol Sponge for Efficient Oil/Water Separation
title_short Facile Preparation of Robust Superhydrophobic/Superoleophilic TiO(2)-Decorated Polyvinyl Alcohol Sponge for Efficient Oil/Water Separation
title_sort facile preparation of robust superhydrophobic/superoleophilic tio(2)-decorated polyvinyl alcohol sponge for efficient oil/water separation
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8892669/
https://www.ncbi.nlm.nih.gov/pubmed/35252699
http://dx.doi.org/10.1021/acsomega.1c06775
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