TY - JOUR
T1 - ZnO:InN oxynitride
T2 - A novel and unconventional photocatalyst for efficient UV–visible light driven hydrogen evolution from water
AU - Menon, Sumithra Sivadas
AU - Hafeez, Hafeez Yusuf
AU - Gupta, Bhavana
AU - Baskar, K.
AU - Bhalerao, Gopal
AU - Hussain, Shamima
AU - Neppolian, Bernaurdshaw
AU - Singh, Shubra
N1 - Publisher Copyright:
© 2019
PY - 2019/10/1
Y1 - 2019/10/1
N2 - 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.
AB - 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.
KW - Oxynitride
KW - Photoelectrochemical
KW - Photoelectron spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85064480967&partnerID=8YFLogxK
U2 - 10.1016/j.renene.2019.03.131
DO - 10.1016/j.renene.2019.03.131
M3 - Article
AN - SCOPUS:85064480967
SN - 0960-1481
VL - 141
SP - 760
EP - 769
JO - Renewable Energy
JF - Renewable Energy
ER -
