Reaction Kinetics, Mechanisms and Catalysis
Volume/Issue:
Volume 107: Issue 2
Visible-light photocatalytic activity of carbothermally reduced/nitrided Ta2O5 to decompose rhodamine B in aqueous solution
Authors:
Hyun-Gyu Kang Department of Advanced Ceramic Materials Engineering, Gangneung-Wonju National University, Gangneung, Gangwon-do, 210-702, Republic of Korea

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Hyunho Shin Department of Advanced Ceramic Materials Engineering, Gangneung-Wonju National University, Gangneung, Gangwon-do, 210-702, Republic of Korea

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Gihong Kim Department of Civil Engineering, Gangneung-Wonju National University, Gangneung, Gangwon-do, 210-702, Republic of Korea

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Pages:
477–485
Online Publication Date:
21 Jul 2012
Publication Date:
01 Dec 2012
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s11144-012-0479-4
Keywords:
Ta2O5; Ball milling; Nitrogen doping; Photocatalytic activity
Restricted access

Abstract

Carbothermally reduced and nitrided Ta2O5 powder at varying temperature (680–760 °C) in flowing NH3 facilitated both nitrogen doping and the formation of the traces of TaON and Ta3N5 to a greater degree than the simply NH3-heat-treated Ta2O5. It demonstrated an enhanced visible-light absorption, an enhanced surface adsorption of rhodamine B molecules in the dark, and subsequently an improved visible-light photocatalytic activity to decompose rhodamine B in aqueous solution (via mainly surface photosensitization), as compared to the simply nitrided counterpart in NH3 atmosphere. The carbothermal reduction followed by the NH3-treatment (nitridation) is proven to be an efficient way to improve the degree of nitridation at a given temperature. The product of such process can be an efficient visible light photocatalyst.

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  • 6. Hara, M, Takata, T, Kondo, JN, Domen, K 2004 Photocatalytic reduction of water by TaON under visible light irradiation. Catal Today 90:313–317 .

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Cover Reaction Kinetics, Mechanisms and Catalysis
Reaction Kinetics, Mechanisms and Catalysis
Print ISSN:
1878-5190
Online ISSN:
1878-5204

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Reaction Kinetics, Mechanisms and Catalysis
Language English
Size B5
Year of
Foundation		 1974
Volumes
per Year		 1
Issues
per Year		 6
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1878-5190 (Print)
ISSN 1878-5204 (Online)

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