Microwave-Assisted Synthesis of Boron-Modified TiO2 Nanocrystals

Inorganics

Claudia Carlucci¹  Barbara Federica Scremin¹  Teresa Sibillano⁴  Cinzia Giannini⁴  Emanuela Filippo³  Patrizia Perulli³  Agostina Lina Capodilupo¹  Giuseppina Anna Corrente² 

[1]Istituto Nanoscienze—CNR, National Nanotechnology Laboratory (NNL), Via Arnesano, Lecce 73100, Italy

[2] E-Mails:

[3]University of Calabria, Via Pietro Bucci, Arcavacata di Rende, 87036, Cosenza

[4] E-Mail:

[5]Department of Innovation Engineering, University of Salento, Via Monteroni, Lecce 73100, Italy

[6] E-Mails:

[7]IC—CNR, Via Giovanni Amendola, 122/O, Bari 70126, Italy

[8] E-Mails:

关键词: microwave synthesis;    TiO₂;    anatase;    nanocrystals;    doping;    photoactivity;   

DOI  :  10.3390/inorganics2020264

来源: mdpi

【 摘 要 】

An efficient microwave-assisted synthesis of TiO₂:(B) nanorods, using titanium tetraisopropoxide (TTIP), benzyl alcohol as the solvent, together with boric acid and oleic acid as the additive reagents, has been developed. Chemical modification of TTIP by oleic acid was demonstrated as a rational strategy to tune the shape of TiO₂ nanocrystals toward nanorod formation. The differently-shaped TiO₂:(B) nanocrystals were characterized in detail by transmission electron microscopy (TEM), inductively coupled plasma-atomic emission spectroscopy (ICP-AES), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy and nitrogen absorption-desorption. Oleic acid coordinated on the nanocrystal surface was removed by the reduction of its carboxyl group, and the photocatalytic activity of bare TiO₂ nanocrystals, under visible light irradiation, was also evaluated. The synthesized TiO₂ anatase nanorods exhibited a good photoactivity and completely degraded Rhodamine B solution within three hours.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.