Facile synthesis of TaOxNy photocatalysts with enhanced visible photocatalytic activity. Issue 3 (4th January 2016)

• Record Type: Journal Article
• Authors: Wang, Ying; Lu, Haiqiang; Wang, Yuanyang; Qiu, Jianhao; Wen, Jing; Zhou, Kang; Chen, Li; Song, Guanglei; Yao, Jianfeng
• Is Part Of: RSC advances. Volume 6:Issue 3(2016)
• Page Start: 1860
• Page End: 1864
• Publication Date: 2016-01-04
• Subjects: Chemistry -- Periodicals; 540.5
• DOI: 10.1039/c5ra23087j
• Languages: English
• ISSNs: 2046-2069

Abstract

Abstract : N-doped TaO x N y is prepared using ethylenediamine as the nitrogen source by a sol–gel method. Abstract : N-doped TaO x N y 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 (Ta 4+ ) in the N-doped TaO x N y sample sintered at 550 °C (TaO x N y -550), and the UV results show TaO x N y -550 has a rather strong absorption in the visible light region. The photocatalytic activities of TaO x N y are evaluated in hydrogen generation by water splitting and photodegradation of methyl orange. The N-doped TaO x N y 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.