Pubblicazione scientifica

The Diatom Staurosirella pinnata for Photoactive Material Production

FILONE TECNOLOGICO	TEMA
produzione e raccolta	composizione alimenti/nutrienti per l’allevamento metodi di allevamento: tipologia in funzione della specie ittica metodi di riproduzione (micro alghe, molluschi, ecc.) ricerca su nuove specie da allevare sistemi di produzione di acquacoltura biologica

RIASSUNTO

A native isolate of the colonial benthic diatom Staurosirella pinnata was cultivated for biosilica production. The silicified cell walls (frustules) were used as a source of homogeneous and structurally predictable porous biosilica for dye trapping and random laser applications. This was coupled with the extraction of lipids from biomass showing potential to fabricate photoactive composite materials sustainably. The strain was selected for its ease of growth in culture and harvesting. Biosilica and lipids were obtained at the end of growth in indoor photobioreactors. Frustules were structurally characterized microscopically and their chemistry analyzed with Fourier Transform Infrared Spectroscopy. Frustule capacity of binding laser dyes was evaluated on a set of frustules/Rhodamine B (Rho B) solutions and with respect to silicon dioxide and diatomite by Fluorescence Spectroscopy demonstrating a high affinity for the organic dye. The effect of dye trapping property in conveying Rho B emission to frustules, with enhancement of scattering events, was analyzed on Rho B doped polyacrylamide gels filled or not with frustules. Amplified spontaneous emission was recorded at increasing pump power indicating the onset of a random laser effect in frustule filled gels at lower power threshold compared to unfilled matrices.

DATA

Data di pubblicazione: 09/11/2016

AUTORI

DE ANGELIS ROBERTA
MELINO SONIA
PROSPOSITO PAOLO
CASALBONI MAURO
LAMASTRA FRANCESCA ROMANA
NANNI FRANCESCA
BRUNO LAURA
CONGESTRI ROBERTA

ENTE DI AFFERENZA

University of Rome ‘Tor Vergata’ Department of Industrial Engineering Rome Italy
University of Rome ‘Tor Vergata’ Department of Chemical Sciences and Technologies Rome Italy
University of Rome ‘Tor Vergata’ Department of Enterprise Engineering Rome Italy
University of Rome ‘Tor Vergata’ Department of Biology Laboratory of Biology of Algae Rome Italy
INSTM CONSORTIUM RSCH UNIT ROMA TOR VERGATA ROME ITALY
OREGON STATE UNIV US

RIVISTA

PLoS ONE, 11(11), e0165571

IMPACT FACTOR

2,870

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