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Synthesis and Evaluation of Porous Semiconductor Hexaniobate Nanotubes for Photolysis of Organic Dyes in Wastewater

1
Materials Research and Technology Institute, University of Texas at El Paso, 500 W. University Ave., El Paso, TX 79968, USA
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Departmento de Física y Matemáticas, Instituto de Ingeniería y Tecnología, UACJ, Avenida del Charro #450 Nte. Cd. Juárez, Chihuahua, C.P. 32310, Mexico
3
Universidad de Puerto Rico-Mayaguez, 259 Blvd. Alfonso Valdez Cabian, Mayagüez 00680, Puerto Rico
*
Author to whom correspondence should be addressed.
Catalysts 2014, 4(4), 346-355; https://doi.org/10.3390/catal4040346
Received: 24 May 2014 / Revised: 23 September 2014 / Accepted: 28 September 2014 / Published: 27 October 2014
We present the chemical synthesis of hexaniobate nanotubes using two routes, (1) starting material K4Nb6O17 and (2) parent material of H4Nb6O17 via ion exchange. The as-synthesized materials were exfoliated by adjusting the pH to 9–10 using tetra-n-butylammonioum hydroxide (TBA+OH), leading to a formation of hexaniobate nanotubes. In order to understand morphology a full characterization was conducted using SEM, HRTEM, BET and powder-XRD. The photocatalytic activity was evaluated using photolysis method using Bromocresol Green (BG) and Methyl Orange (MO) as model contaminants. Results indicate a nanotube porous oxide with large porous and surface area; the photocatalytic activity is about 95% efficient when comparing with commercial TiO2. View Full-Text
Keywords: nanotubes; photo-catalysis; niobium; STEM nanotubes; photo-catalysis; niobium; STEM
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Zarei-Chaleshtori, M.; Correa, V.; López, N.; Ramos, M.; Edalatpour, R.; Rondeau, N.; Chianelli, R.R. Synthesis and Evaluation of Porous Semiconductor Hexaniobate Nanotubes for Photolysis of Organic Dyes in Wastewater. Catalysts 2014, 4, 346-355.

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