Influence of the power density and working pressure in the magnetron co-sputtering deposition of ZnO–SnO2 thin films and their effect in photocatalytic hydrogen production

Saldaña-Ramírez, A.; Cruz, M.R. Alfaro; Juárez-Ramírez, Isaías; Torres-Martı́nez, Leticia M.

doi:10.1016/j.optmat.2020.110501

Cited by 23 publications

(9 citation statements)

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“…The photocatalytic breakdown of water molecules into H 2 and oxygen requires semiconducting metal oxide-based photocatalyst. , In previous years, various photocatalysts such as tin oxide (SnO 2 ), nickel oxide (NiO), manganese oxide (MnO 2 ), graphitic carbon nitride (g-C 3 N 4 ), copper oxide (CuO), cobalt oxide (Co 3 O 4 ), perovskite-like materials, zinc oxide (ZnO), tungsten oxide (WO 3 ), etc. have been widely used for H 2 production applications. − However, many efficient photocatalysts have been reported for H 2 production but still there is a chance to further design and develop new photocatalysts for H 2 production applications …”

Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of a Magnesium Vanadate-Functionalized Reduced Graphene Oxide Nanocomposite for an Efficient Photocatalytic Hydrogen Production

et al. 2023

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Herein, we reported the fabrication of a magnesium vanadate-reduced graphene oxide (Mg 3 V 2 O 8 -rGO) composite. Further, the structural morphology of the as-prepared Mg 3 V 2 O 8 -rGO composite was studied by scanning electron microscopy. Powder X-ray diffraction and energy-dispersive X-ray spectroscopy techniques were also adopted to check the phase purity and elemental composition of the prepared Mg 3 V 2 O 8 -rGO composite. Mg 3 V 2 O 8 -rGO possesses a band gap of 2.98 eV, which prompted us to explore its photocatalytic activity for hydrogen (H 2 ) evolution reaction. The Mg 3 V 2 O 8 -rGO composite demonstrated the generation of a reasonable amount of H 2 evolution (97.45 μmol g −1 ), which is relatively higher than that of pristine Mg 3 V 2 O 8 (17.45 μmol g −1 ). This may be attributed to the presence of synergism between Mg 3 V 2 O 8 and rGO. In addition, Mg 3 V 2 O 8 -rGO also showed good stability and suggested its potential application for photocatalytic H 2 evolution applications. So far, no report is available on the use of Mg 3 V 2 O 8 -rGO as a photocatalyst for H 2 evolution. We propose the potential role of the Mg 3 V 2 O 8 -rGO composite for photocatalytic H 2 evolution applications.

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Section: Introductionmentioning

confidence: 99%

Hydrothermal Synthesis of a Magnesium Vanadate-Functionalized Reduced Graphene Oxide Nanocomposite for an Efficient Photocatalytic Hydrogen Production

et al. 2023

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“…The emission in the visible spectrum in the present study is a result of the recombination of conduction band electrons with both shallow and deep traps. The electrons that are confined within the deep electron trap have the ability to move back to the conduction band (CB) and can be gathered by deep holes traps, leading to the production of visible light [54,55]. The emission of trapped states, whether from shallow or deep traps, is characterized by a delay and a longer duration compared to the emission of non-trapped states.…”

Section: Photoluminescence (Pl) Measurementsmentioning

confidence: 99%

Influence of annealing temperature and laser irradiation on the structural, optical, and photoluminescence characteristics of Ni₂O₃/SnO₂nanocomposites for perspective applications

El Desouky,

Saleh,

Atta

2024

Phys. Scr.

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In this study, a new approach methodology is employed to modify the structural, optical, and photoluminescence properties of Ni2O3/SnO2(NO/TO) nanocomposites. The effects of temperature and laser irradiation on a specific system were analyzed and described using XRD, XPS, and TEM. The diffraction patterns indicate the presence of two distinct phases within the NO/TO system. The XPS results reveal a robust underlying interaction between Ni2O3 and SnO2, exhibited by the observed shifts in the peak positions of Ni 2p, Sn 3d, and O 1s. The TEM images demonstrate the formation of hexagonal and half-hexagonal forms with varying orientations, as well as the emergence of elongated tetragonal shapes, upon increasing the temperature to 900 °C. the notable enhancement in light absorption, with the absorption bands spanning a wide range in the UV-Vis spectra, specifically from approximately 300 nm to around 800 nm in the near-infrared (NIR) regions. The broad range of PL emission bands identified by this mixture of nanoparticles, expanding from the UV to the near and intermediate IR region, demonstrated that NO/TO nanocpomposites are considerably defective. The NO/TO nanocomposites exhibit efficient multi-color band emissions at ambient conditions, rendering them promising contenders for deployment in optoelectronic nanodevices, including blue, yellow, and white band emission light-emitting diodes and NIR luminescence bioimaging.

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“…Although the formation of the orthorhombic phase usually requires high pressure, i.e., extremely energetic conditions, orthorhombic SnO 2 can nevertheless be stabilized as thin films by controlling the deposition conditions, such as temperature and pressure, or through doping. Several physical deposition techniques are reported in the literature, such as sputtering [ 52 ] and pulsed laser deposition (PLD) [ 53 , 54 ], in addition to chemical techniques, such as plasma-enhanced atomic layer deposition (PE-ALD) [ 55 , 56 ] or mist chemical vapor deposition (CVD) [ 57 ]. The addition of transition-metal ions or rare-earth-ion dopants has also shown promising results in the stabilization of the orthorhombic phase.…”

Section: Stabilization Of Sno 2 Polymorphsmentioning

confidence: 99%

Tailoring SnO2 Defect States and Structure: Reviewing Bottom-Up Approaches to Control Size, Morphology, Electronic and Electrochemical Properties for Application in Batteries

Ponte

Rauwel

2023

Materials

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Tin oxide (SnO2) is a versatile n-type semiconductor with a wide bandgap of 3.6 eV that varies as a function of its polymorph, i.e., rutile, cubic or orthorhombic. In this review, we survey the crystal and electronic structures, bandgap and defect states of SnO2. Subsequently, the significance of the defect states on the optical properties of SnO2 is overviewed. Furthermore, we examine the influence of growth methods on the morphology and phase stabilization of SnO2 for both thin-film deposition and nanoparticle synthesis. In general, thin-film growth techniques allow the stabilization of high-pressure SnO2 phases via substrate-induced strain or doping. On the other hand, sol–gel synthesis allows precipitating rutile-SnO2 nanostructures with high specific surfaces. These nanostructures display interesting electrochemical properties that are systematically examined in terms of their applicability to Li-ion battery anodes. Finally, the outlook provides the perspectives of SnO2 as a candidate material for Li-ion batteries, while addressing its sustainability.

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Influence of the power density and working pressure in the magnetron co-sputtering deposition of ZnO–SnO2 thin films and their effect in photocatalytic hydrogen production

Cited by 23 publications

References 54 publications

Hydrothermal Synthesis of a Magnesium Vanadate-Functionalized Reduced Graphene Oxide Nanocomposite for an Efficient Photocatalytic Hydrogen Production

Hydrothermal Synthesis of a Magnesium Vanadate-Functionalized Reduced Graphene Oxide Nanocomposite for an Efficient Photocatalytic Hydrogen Production

Influence of annealing temperature and laser irradiation on the structural, optical, and photoluminescence characteristics of Ni₂O₃/SnO₂nanocomposites for perspective applications

Tailoring SnO2 Defect States and Structure: Reviewing Bottom-Up Approaches to Control Size, Morphology, Electronic and Electrochemical Properties for Application in Batteries

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Influence of the power density and working pressure in the magnetron co-sputtering deposition of ZnO–SnO2 thin films and their effect in photocatalytic hydrogen production

Cited by 23 publications

References 54 publications

Hydrothermal Synthesis of a Magnesium Vanadate-Functionalized Reduced Graphene Oxide Nanocomposite for an Efficient Photocatalytic Hydrogen Production

Hydrothermal Synthesis of a Magnesium Vanadate-Functionalized Reduced Graphene Oxide Nanocomposite for an Efficient Photocatalytic Hydrogen Production

Influence of annealing temperature and laser irradiation on the structural, optical, and photoluminescence characteristics of Ni2O3/SnO2nanocomposites for perspective applications

Tailoring SnO2 Defect States and Structure: Reviewing Bottom-Up Approaches to Control Size, Morphology, Electronic and Electrochemical Properties for Application in Batteries

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Influence of annealing temperature and laser irradiation on the structural, optical, and photoluminescence characteristics of Ni₂O₃/SnO₂nanocomposites for perspective applications