ZnO:InN oxynitride: A novel and unconventional photocatalyst for efficient UV–visible light driven hydrogen evolution from water
| Autor: | Krishnan Baskar, Bhavana Gupta, Sumithra Sivadas Menon, Gopal Bhalerao, Shubra Singh, Bernaurdshaw Neppolian, Sajjad Hussain, Hafeez Yusuf Hafeez |
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| Rok vydání: | 2019 |
| Předmět: |
Photocurrent
Materials science 060102 archaeology Renewable Energy Sustainability and the Environment Band gap 020209 energy 06 humanities and the arts 02 engineering and technology Photochemistry chemistry.chemical_compound X-ray photoelectron spectroscopy chemistry 0202 electrical engineering electronic engineering information engineering Photocatalysis Water splitting 0601 history and archaeology Methanol Visible spectrum Hydrogen production |
| Zdroj: | Renewable Energy. 141:760-769 |
| ISSN: | 0960-1481 |
| DOI: | 10.1016/j.renene.2019.03.131 |
| Popis: | A novel UV–visible light active oxynitride photocatalyst, ZnO:InN, has been demostrated to exhibit efficient hydrogen evolution from water as compared to some conventional photocatalysts. A reduction in bandgap (2.82 eV), as estimated from diffuse reflectance spectra, is explained using Valence band XPS studies and attributed to the upshift in valence band maximum. Photocatalytic activity of the samples has been demonstrated by organic dye degradation, where 92% decay was observed in 180 min under direct sunlight. Photoelectrochemical studies under visible light showed significant photoresponse with a photocurrent density of ∼8 μA/cm2. This study, as per our knowledge, is first of its kind where ZnO:InN oxynitride has been explored as a UV–visible light active photocatalyst with significant H2 generation of ∼48 μmol/g by UV–visible light water splitting using methanol scavenger. The results show the promising future applications of ZnO:InN oxynitride as a sunlight active photocatalyst for hydrogen production. |
| Databáze: | OpenAIRE |
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