Fabrication of nano N-doped In2Ga2ZnO7 for photocatalytic hydrogen production under visible light

Martha, Satyabadi; Parida, Kulamani

doi:10.1016/j.ijhydene.2012.09.025

Cited by 17 publications

(18 citation statements)

References 38 publications

(59 reference statements)

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“…[24][25][26][27][28][29][30][31] Among the semiconductors based on d 10 systems developed by our group, N-doped GaZn mixed oxide, InGaZn mixed oxide and N-doped In 2 Ga 2 ZnO 7 showed promising activity for H 2 production under visible-light irradiation. [24][25][26][27] The use of carbon scaffolds to improve the activity is one of the major breakthroughs in the field of fuel cell technologies. [32,33] Carbon supports have been used extensively as a scaffold to increase photocurrent for solar cell applications.…”

Section: Introductionmentioning

confidence: 93%

“…[62] The lattice oxygen peak is related to GaÀO, InÀO and ZnÀO bonding in the 3RGO/IGZ nanocomposite. [25] The higher binding energy peak at 531.1 eV was attributed to the surface hydroxyl O atoms. [62]…”

Section: Diffuse Reflectance Uv/vis Spectroscopymentioning

confidence: 99%

“…To understand the migration, transfer and recombination process of the electron-hole pair, a photoluminescence (PL) study was performed. [24][25][26][27] The PL spectra of RGO/IGZ nanocomposites prepared at various concentrations of graphene oxide are shown in Figure 5. The PL spectra of RGO/IGZ nanocomposite photocatalysts were recorded at room temperature with exci- tation at 300 nm.…”

Section: Photoluminescence Spectroscopymentioning

confidence: 99%

“…The investigated materials showed superior results with respect to structural, optical, electronic properties and photocatalytic activity compared to materials in our previous studies. [24,25]…”

Section: Introductionmentioning

confidence: 99%

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Reduced Graphene Oxide/InGaZn Mixed Oxide Nanocomposite Photocatalysts for Hydrogen Production

Martha¹,

Padhi²,

Parida³

2013

ChemSusChem

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A series of reduced graphene oxide and indium-gallium-zinc mixed oxide (RGO/IGZ) nanocomposites were successfully synthesised by a simple one-step hydrothermal method. The as-synthesised nanocomposites were characterised by crystallographic, microscopic, and spectroscopic methods to explore the robust photocatalytic activity of the prepared materials. XRD patterns confirmed the formation of highly pure, single-phase, hexagonal In2 Ga2 ZnO7 with no impurity-related peaks. All the photocatalysts absorbed visible light as observed from the diffuse reflectance UV/Vis spectra. The electron-hole recombination is effectively minimised by the formation of an RGO/metal oxide nanocomposite, which was successfully derived from a photoluminescence (PL) study and photoelectrochemical measurements. The decoration of IGZ nanocrystals onto reduced graphene sheets leads to significant quenching of its luminescent intensity, dramatically improved photocurrent generation (33 times more than neat IGZ) and significantly enhanced photostability. The high photocatalytic activity for H2 production is explained by the strong interaction between the IGZ nanocrystals with RGO sheets, low PL intensity, high photocurrent and large surface area.

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Section: Introductionmentioning

confidence: 93%

Section: Diffuse Reflectance Uv/vis Spectroscopymentioning

confidence: 99%

Section: Photoluminescence Spectroscopymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Reduced Graphene Oxide/InGaZn Mixed Oxide Nanocomposite Photocatalysts for Hydrogen Production

Martha¹,

Padhi²,

Parida³

2013

ChemSusChem

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“…The lower binding energy peak at 529.4 eV was attributed to the lattice oxygen 62. The lattice oxygen peak is related to GaO, InO and ZnO bonding in the 3RGO/IGZ nanocomposite 25. The higher binding energy peak at 531.1 eV was attributed to the surface hydroxyl O atoms 62…”

Section: Resultsmentioning

confidence: 98%

Cover Picture: Design and Synthesis of a MAO‐B‐Selectively Activated Prodrug Based on MPTP: A Mitochondria‐Targeting Chemotherapeutic Agent for Treatment of Human Malignant Gliomas (ChemMedChem 4/2015)

et al. 2015

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A series of reduced graphene oxide and indium–gallium–zinc mixed oxide (RGO/IGZ) nanocomposites were successfully synthesised by a simple one‐step hydrothermal method. The as‐synthesised nanocomposites were characterised by crystallographic, microscopic, and spectroscopic methods to explore the robust photocatalytic activity of the prepared materials. XRD patterns confirmed the formation of highly pure, single‐phase, hexagonal In2Ga2ZnO7 with no impurity‐related peaks. All the photocatalysts absorbed visible light as observed from the diffuse reflectance UV/Vis spectra. The electron–hole recombination is effectively minimised by the formation of an RGO/metal oxide nanocomposite, which was successfully derived from a photoluminescence (PL) study and photoelectrochemical measurements. The decoration of IGZ nanocrystals onto reduced graphene sheets leads to significant quenching of its luminescent intensity, dramatically improved photocurrent generation (33 times more than neat IGZ) and significantly enhanced photostability. The high photocatalytic activity for H2 production is explained by the strong interaction between the IGZ nanocrystals with RGO sheets, low PL intensity, high photocurrent and large surface area.

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A review on selected heterogeneous photocatalysts for hydrogen production

Acar

Dinçer

Zamfirescu

2014

Int. J. Energy Res.

176

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SUMMARY In this study, visible light‐driven heterogeneous photocatalysts for hydrogen production are comparatively assessed based on technical, environmental, and cost criteria. The photocatalysis systems are compared with respect to their (i) rate of hydrogen generation per gram; (ii) rate of hydrogen generation per m2 of the specific surface area; and (iii) the band gap energy. The photocatalysis systems are also compared and discussed in terms of flammability, reactivity, and their impact on living systems' health. Furthermore, the costs of the required components of the photocatalysis systems are ranked. In addition to individual photocatalyst comparison, seven photocatalyst groups are ranked and compared. The results show that TiO2‐C‐362 and Ag0.03Mn0.40Cd0.60S show the highest in terms of µmol/h‐gcat and µmol/h‐m2cat, respectively, and TiO2‐C‐362 has the highest overall rankings. The Zn/In/S‐based photocatalyst groups show the highest hydrogen production rate in terms of µmol/h‐gcat and µmol/h‐m2cat. Overall, Cd/S/Zn has the highest rankings when cost and health and environmental impact criteria are taken into account. Copyright © 2014 John Wiley & Sons, Ltd.

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Fabrication of nano N-doped In2Ga2ZnO7 for photocatalytic hydrogen production under visible light

Cited by 17 publications

References 38 publications

Reduced Graphene Oxide/InGaZn Mixed Oxide Nanocomposite Photocatalysts for Hydrogen Production

Reduced Graphene Oxide/InGaZn Mixed Oxide Nanocomposite Photocatalysts for Hydrogen Production

Cover Picture: Design and Synthesis of a MAO‐B‐Selectively Activated Prodrug Based on MPTP: A Mitochondria‐Targeting Chemotherapeutic Agent for Treatment of Human Malignant Gliomas (ChemMedChem 4/2015)

A review on selected heterogeneous photocatalysts for hydrogen production

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