Issue 3, 2016

Facile synthesis of TaOxNy photocatalysts with enhanced visible photocatalytic activity

Abstract

N-doped TaOxNy is prepared using ethylenediamine as the nitrogen source by a sol–gel method. The obtained samples are subsequently calcined at 500–900 °C. XRD analysis and XPS survey indicate the presence of immature TaO2 (Ta4+) in the N-doped TaOxNy sample sintered at 550 °C (TaOxNy-550), and the UV results show TaOxNy-550 has a rather strong absorption in the visible light region. The photocatalytic activities of TaOxNy are evaluated in hydrogen generation by water splitting and photodegradation of methyl orange. The N-doped TaOxNy sample sintered at 550 °C shows the highest H2 generation rate of 3.12 mmol g−1 h−1, and only 3.1% methyl orange is left after 90 min irradiation. Such photocatalytic activities are comparable to the conventional nitrogen-doped titania.

Graphical abstract: Facile synthesis of TaOxNy photocatalysts with enhanced visible photocatalytic activity

Supplementary files

Article information

Article type
Communication
Submitted
03 Nov 2015
Accepted
17 Dec 2015
First published
21 Dec 2015

RSC Adv., 2016,6, 1860-1864

Facile synthesis of TaOxNy photocatalysts with enhanced visible photocatalytic activity

Y. Wang, H. Lu, Y. Wang, J. Qiu, J. Wen, K. Zhou, L. Chen, G. Song and J. Yao, RSC Adv., 2016, 6, 1860 DOI: 10.1039/C5RA23087J

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