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Article

Green Waste-Derived Substances Immobilized on SBA-15 Silica: Surface Properties, Adsorbing and Photosensitizing Activities towards Organic and Inorganic Substrates

1
Dipartimento di Chimica, Università di Torino, via P. Giuria 7, I-10125 Torino, Italy
2
Istituto per lo Studio dei Materiali Nanostrutturati, Consiglio Nazionale delle Ricerche, via U. La Malfa 153, I-90146 Palermo, Italy
3
Acea Pinerolese Industriale S.p.A., Via Vigone 42, I-10064 Pinerolo (TO), Italy
4
NIS and INSTM Reference Centre, Via P. Giuria 7, I-10125 Torino, Italy
*
Author to whom correspondence should be addressed.
Nanomaterials 2019, 9(2), 162; https://doi.org/10.3390/nano9020162
Received: 13 December 2018 / Revised: 24 January 2019 / Accepted: 25 January 2019 / Published: 29 January 2019
(This article belongs to the Special Issue Sustainable and Safe Nano-Enabled Water Treatment Applications)
Urban wastes are a potential source of environment contamination, especially when they are not properly disposed. Nowadays, researchers are finding innovative solutions for recycling and reusing wastes in order to favour a sustainable development from the viewpoint of circular economy. In this context, the lignin-like fraction of biomass derived from Green Compost is a cost-effective source of soluble Bio-Based Substances (BBS-GC), namely complex macromolecules/supramolecular aggregates characterized by adsorbing and photosensitizing properties. In this work BBS-GC were immobilized on a silica support (SBA-15) and the chemico-physical properties of the resulting hybrid material (BBS-SBA) were analysed by zeta-potential measurements, nitrogen adsorption at 77K and micro-calorimetric techniques. Successively, the BBS-SBA photosensitizing and adsorption abilities were tested. Adsorption in the dark of Rhodamine B and Orange II on BBS-SBA and their degradation upon irradiation under simulated solar light were shown, together with the formation of hydroxyl radicals detected by Electron Paramagnetic Resonance spectroscopy. Furthermore, the adsorption of six inorganic ions (Al, Ni, Mn, As, Hg, Cr) on BBS-SBA was studied in pure water at two different pH values and in a landfill leachate, showing the good potential of this kind of materials in the removal of wastewater contaminants. View Full-Text
Keywords: orange; rhodamine; adsorption; photocatalysis; hybrid silica; wastewater treatment; waste-derived substances orange; rhodamine; adsorption; photocatalysis; hybrid silica; wastewater treatment; waste-derived substances
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MDPI and ACS Style

Tummino, M.L.; Testa, M.L.; Malandrino, M.; Gamberini, R.; Bianco Prevot, A.; Magnacca, G.; Laurenti, E. Green Waste-Derived Substances Immobilized on SBA-15 Silica: Surface Properties, Adsorbing and Photosensitizing Activities towards Organic and Inorganic Substrates. Nanomaterials 2019, 9, 162. https://doi.org/10.3390/nano9020162

AMA Style

Tummino ML, Testa ML, Malandrino M, Gamberini R, Bianco Prevot A, Magnacca G, Laurenti E. Green Waste-Derived Substances Immobilized on SBA-15 Silica: Surface Properties, Adsorbing and Photosensitizing Activities towards Organic and Inorganic Substrates. Nanomaterials. 2019; 9(2):162. https://doi.org/10.3390/nano9020162

Chicago/Turabian Style

Tummino, Maria L., Maria L. Testa, Mery Malandrino, Roberta Gamberini, Alessandra Bianco Prevot, Giuliana Magnacca, and Enzo Laurenti. 2019. "Green Waste-Derived Substances Immobilized on SBA-15 Silica: Surface Properties, Adsorbing and Photosensitizing Activities towards Organic and Inorganic Substrates" Nanomaterials 9, no. 2: 162. https://doi.org/10.3390/nano9020162

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