Next Article in Journal
Study of Oxidation and Polarization-Dependent Optical Properties of Environmentally Stable Layered GaTe Using a Novel Passivation Approach
Previous Article in Journal
Improvement in Heavy Metal Removal from Wastewater Using an External Magnetic Inductor
Previous Article in Special Issue
Enhanced Photocatalytic Degradation of Organic Dyes via Defect-Rich TiO2 Prepared by Dielectric Barrier Discharge Plasma
Open AccessArticle

Highly Robust and Selective System for Water Pollutants Removal: How to Transform a Traditional Photocatalyst into a Highly Robust and Selective System for Water Pollutants Removal

1
Dipartimento di Chimica e Biologia and INSTM Research Unit, Università degli Studi di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
2
Department of Industrial Engineering, The University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
*
Authors to whom correspondence should be addressed.
Nanomaterials 2019, 9(11), 1509; https://doi.org/10.3390/nano9111509
Received: 19 September 2019 / Revised: 16 October 2019 / Accepted: 21 October 2019 / Published: 23 October 2019
Highly porous monolithic aerogels based on ZnO photocatalyst and syndiotactic polystyrene (s-PS) were obtained by supercritical CO2 treatment of ZnO/s-PS gels. The prepared aerogels were characterized and their photocatalytic activity was evaluated using phenol and toluene as water pollutant models. The s-PS nanoporous crystalline phase, able to absorb pollutant molecules, was proven to be necessary to ensure high photocatalytic efficiency as the aerogel acts not only as a support, but also as pollutant pre-concentrator. The reusability of ZnO/s-PS aerogels is also strong showing no decrease in photocatalytic activity after six consecutive degradation trials. Finally, the aerogel matrix prevents ZnO dissolution occurring under acidic conditions and promotes a selective removal of the pollutants. The synergy between the photocatalyst and the innovative polymeric support provides the composite system with robustness, chemical stability, easy recovery after treatment, high efficiency of pollutant removal with a marked selectivity which make these materials promising for large scale applications. View Full-Text
Keywords: ZnO; aerogels; photocatalyst support; water pollutants photodegradation; nanoporous crystalline phases ZnO; aerogels; photocatalyst support; water pollutants photodegradation; nanoporous crystalline phases
Show Figures

Figure 1

MDPI and ACS Style

Sacco, O.; Vaiano, V.; Daniel, C.; Navarra, W.; Venditto, V. Highly Robust and Selective System for Water Pollutants Removal: How to Transform a Traditional Photocatalyst into a Highly Robust and Selective System for Water Pollutants Removal. Nanomaterials 2019, 9, 1509.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop