Composite polydopamine-based TiO2 coated mesh with restorable superhydrophobic surfaces for wastewater treatment

Ni Wang, Hao Zhang, Songyu Liu, Bo Peng, Ziwei Deng*

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: LehtiartikkeliArticleScientificvertaisarvioitu

3 Sitaatiot (Scopus)

Abstrakti

Various pollutants in wastewater including water-insoluble oils and water-soluble toxic organic pollutants, have been threatening ecosystems and human health, making wastewater purification difficult. Inspired by the hierarchical structures and chemical compositions of lotus leaf, we combined the usage of polydopamine (PDA) chemistry and photocatalytically active TiO2 to develop a facile approach toward composite PDA-based TiO2 coated mesh with restorable superhydrophobicity. In this procedure, PDA assisted loading of TiO2 nanoparticles onto stainless steel mesh with a result of micro/nanoscale hierarchical surface was achieved via a single-step solvothermal method. After modified with 1H, 1H, 2H, 2H-perfluorodecyltriethoxysilane, this mesh became superhydrophobic. The TiO2 coated mesh exhibited enhanced superhydrophobicity, excellent environmental stability, robust chemical resistance and high mechanical durability. Moreover, it has been demonstrated the high separation capacity and extraordinary recyclability for various oils collection from water due to its special surface superhydrophobicity. Importantly, such a mesh possessed photocatalytic activity due to the embedded TiO2, which allowed for the effective degradation of organic pollutants under UV irradiation, representing a plausible way to restore superhydrophobic surface by photocatalytically decomposing the attached contaminants. This investigation suggests a green and facile way to prepare superhydrophobic materials with restored surface wetting property, which will be useful for wastewater purification. Graphical abstract: [Figure not available: see fulltext.]

AlkuperäiskieliEnglanti
Sivut7321-7333
Sivumäärä13
JulkaisuJournal of Materials Science
Vuosikerta56
Numero12
Varhainen verkossa julkaisun päivämäärä2021
DOI - pysyväislinkit
TilaJulkaistu - 5 tammikuuta 2021
OKM-julkaisutyyppiA1 Julkaistu artikkeli, soviteltu

Sormenjälki

Sukella tutkimusaiheisiin 'Composite polydopamine-based TiO<sub>2</sub> coated mesh with restorable superhydrophobic surfaces for wastewater treatment'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.

Siteeraa tätä