Carbon quantum dots as nano-scaffolds for α-Fe2O3 growth: Preparation of Ti/CQD@α-Fe2O3 photoanode for water splitting under visible light irradiation
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چکیده
منابع مشابه
Electrodeposited Co-Pi Catalyst on α-Fe2O3 Photoanode for Water-Splitting Applications
Optoelectronic properties of hematite (α-Fe2O3) as a photoanode and the required over-potential in photo-assisted water splitting has been improved by presence of Co-Pi on its surface. In order to increase the lifetime of the photogenerated holes and lower the applied bias, cobalt-phosphate (Co-Pi) on nanostructured α-Fe2O3 by electrodeposition was de...
متن کاملFe2O3/carbon quantum dots complex photocatalysts and their enhanced photocatalytic activity under visible light.
In this study, we report the facile fabrication of Fe(2)O(3)/CQDs nanocomposites, and investigate their effective photocatalytic activity for the photodegradation of toxic gas (gas-phase benzene and methanol) under visible light. The crucial roles of CQDs in the enhancement of photocatalytic activity of the Fe(2)O(3)/CQDs composites are illustrated.
متن کاملLight Illuminated α−Fe2O3/Pt Nanoparticles as Water Activation Agent for Photoelectrochemical Water Splitting
The photoelectrochemical (PEC) water splitting is hampered by strong bonds of H2O molecules and low ionic conductivity of pure water. The photocatalysts dispersed in pure water can serve as a water activation agent, which provides an alternative pathway to overcome such limitations. Here we report that the light illuminated α-Fe2O3/Pt nanoparticles may produce a reservoir of reactive intermedia...
متن کاملHigh-performance n-Si/α-Fe2O3 core/shell nanowire array photoanode towards photoelectrochemical water splitting.
Many narrow band-gap semiconductors cannot fulfil the energetic requirements for water splitting, thus the assistance of large external voltages to complete the water decomposition reaction is required. Through thermal decomposition of Fe(NO3)3 on n-Si nanowires prepared by the chemical etching method, we fabricated a high-performance n-Si/α-Fe2O3 core/shell nanowire array photoanode that exhib...
متن کاملPhotoelectrochemical activity of as-grown, α-Fe2O3 nanowire array electrodes for water splitting.
Undoped hematite nanowire arrays grown using plasma oxidation of iron foils show significant photoactivity (~0.38 mA cm(-2) at 1.5 V versus reversible hydrogen electrode in 1 M KOH). In contrast, thermally oxidized nanowire arrays grown on iron exhibit no photoactivity due to the formation of a thick (>7 μm Fe(1-x)O) interfacial layer. An atmospheric plasma oxidation process required only a few...
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ژورنال
عنوان ژورنال: Applied Catalysis B: Environmental
سال: 2018
ISSN: 0926-3373
DOI: 10.1016/j.apcatb.2018.01.016