Editors' Choice—The Photoelectrochemical and Photocatalytic Properties of Tantalum Oxide and Tantalum Nitride
Autor: | Sebastian Fiechter, Vijay Khanal, Rowshanak Irani, Fatwa F. Abdi, Vaidyanathan Subramanian |
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Rok vydání: | 2019 |
Předmět: |
Materials science
Renewable Energy Sustainability and the Environment Nanoparticle Chronoamperometry Condensed Matter Physics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Catalysis Absorbance chemistry.chemical_compound Tantalum nitride chemistry Chemical engineering Linear sweep voltammetry Materials Chemistry Electrochemistry Photocatalysis Thin film |
Zdroj: | Journal of The Electrochemical Society. 166:H3294-H3299 |
ISSN: | 1945-7111 0013-4651 |
Popis: | The surfactant-assisted synthesis of tantalum oxide nanoparticles (Ta2O5), its subsequent nitridation to form tantalum nitride (Ta3N5), and the evaluation of the photoactivity of these nanoparticles, are presented. The surface, optical, and compositional characterization of the in-house synthesized photocatalysts indicate spherical nanoparticles with = 30 nm Ta2O5 and = 30 nm Ta3N5 with the latter photocatalysts showing absorbance onset at ~ 630 nm. Photoelectrochemical analysis of the various photocatalyst films using chronoamperometry, linear sweep voltammetry, and impedance measurements attribute an improved photoactivity with the in-house catalysts to better charge generation, transport, and utilization. Initial results using Ta2O5 and Ta3N5 demonstrate photocatalytic activity toward conversion of colored pollutants. |
Databáze: | OpenAIRE |
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