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Selective synthesis of TiO2 nanocrystals with morphology control with the microwave-solvothermal method (Articolo in rivista)

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Selective synthesis of TiO2 nanocrystals with morphology control with the microwave-solvothermal method (Articolo in rivista) (literal)

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Carlucci C.; Xu H.; Scremin B.F.; Giannini C.; Altamura D.; Carlino E.; Videtta V.; Conciauro F.; Gigli G.; Ciccarella G. (2014)
Selective synthesis of TiO2 nanocrystals with morphology control with the microwave-solvothermal method
in CrystEngComm (Camb., Online); The Royal Society of Chemistry, Cambridge (Regno Unito)
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Carlucci C.; Xu H.; Scremin B.F.; Giannini C.; Altamura D.; Carlino E.; Videtta V.; Conciauro F.; Gigli G.; Ciccarella G. (literal)

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TU-NIMS Joint Research Center, School of Materials Science and Engineering, Tianjin University, 92 Weijin Road, Nankai District, Tianjin 300072, China; IC-CNR, Via Giovanni Amendola 122/O, 70126 Bari, Italy; IOM-CNR Laboratorio TASC, Area Science Park Basovizza Bld MM SS 14 Km 163.5, 34149 Trieste, Italy; Laboratorio Archimede S.r.l., Largo Ciaia 25, 70125 Bari (BA), Italy; Center for Biomolecular Nanotechnologies (CBN), Italian Institute of Technology (IIT), Via Barsanti 1, 73010 Arnesano (LE), Italy; Dipartimento di Ingegneria dell'Innovazione, Università Del Salento, Via Monteroni, 73100 Lecce, Italy (literal)

Titolo

Selective synthesis of TiO2 nanocrystals with morphology control with the microwave-solvothermal method (literal)

Abstract

In this paper, a method to synthesize anatase TiO2 nanorods by hydrolysis of titanium(IV) isopropoxide (TTIP) in the presence of benzyl alcohol and acetic acid at 210 °C was tested. The novelty of the present approach relies on the evaluation of the shape-controlled synthesis of anatase TiO2 nanocrystals via a microwave-solvothermal method in 45 min. The different TiO2 nanocrystals were obtained by tuning the TTIP/acetic acid ratio under optimized synthetic conditions and were characterized in detail by X-ray diffraction (XRD), transmission electron microscopy (TEM), high-resolution TEM (HRTEM), micro Raman (together with microphotoluminescence) and FT-IR spectroscopies. The acetic acid coordinated on the nanocrystal surface was removed by the reduction of its carboxyl group via a \"super-hydride reaction\", and the photocatalytic activity of bare TiO2 nanocrystals, under visible light irradiation, was also evaluated: the best performing TiO2 anatase nanocrystals exhibited a discrete photoactivity, completely degrading Rhodamine B solution in five hours. (literal)

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