Visible light photocatalytic water splitting for hydrogen production from N-TiO2 rice grain shaped electrospun nanostructures

Babu, V.; Kumar, M. K.; Nair, A. Sreekumaran; Kheng, Tan Lee; Allakhverdiev, Suleyman I.; Ramakrishna, Seeram

doi:10.1016/j.ijhydene.2011.12.015

Cited by 155 publications

(59 citation statements)

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“…42,43 The effect of quantum confinement results in important optical and electronic properties. The properties of various types of 1D and 2D semiconducting nanostructures, such as NRs, NWs, NTs and nanofibres (NFs) 44,45 are considered in the next section, against the background of H 2 generation.…”

Section: Introductionmentioning

confidence: 99%

Review of one-dimensional and two-dimensional nanostructured materials for hydrogen generation

Babu

Vempati

Uyar

et al. 2015

Phys. Chem. Chem. Phys.

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Hydrogen is an attractive alternative to fossil fuels in terms of environmental and other advantages. Of the various production methods for H 2 , photocatalysis requires further development so that it can be applied economically on an industrial scale. One-and two-dimensional nanostructures in both pristine and modified forms have shown great potential as catalysts in the generation of H 2 . We review here recent developments in these nanostructure catalysts and their efficiency in the generation of H 2 under UV/visible/simulated solar light. Despite much research effort, many photocatalysts do not yet meet the practical requirements for the generation of H 2 , such as visible light activity. H 2 production is dependent on a variety of parameters and factors. To meet future energy demands, several challenges in H 2 production still need to be solved. We address here the factors that influence the efficiency of H 2 production and suggest alternatives. The nanostructures are classified based on their morphology and their efficiency is considered with respect to the influencing parameters. We suggest effective ways of engineering catalyst combinations to overcome the current performance barriers.

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Section: Introductionmentioning

confidence: 99%

Review of one-dimensional and two-dimensional nanostructured materials for hydrogen generation

Babu

Vempati

Uyar

et al. 2015

Phys. Chem. Chem. Phys.

Self Cite

161

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“…The plate did not facilitate the decomposition of MB as efficiently as did some other visible-light-responsive photocatalytic materials (Table S3, Supporting Information), 30,31 primarily because MB strongly adsorbed on the VNSiT-dien-plate, which reduced the photoactivity under visible-light irradiation. This implies that the valence between the adsorptivity and the photoactivity of photocatalysts towards target species is important in highly efficient water-treatment systems.…”

Section: Photodecomposition Rate Constantsmentioning

confidence: 95%

Evaluation of the Water-treatment Ability of Silica-doped Titanium Dioxide-coated Glass Plates Using a Cationic Coupling Reagent Based on a Flow Analytical System

et al. 2015

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In this study, a photocatalytic plate bound to highly dispersible silica-doped titanium dioxide (SiT) on a trimethoxysilylpropyldiethylenetriamine (dien)-coated glass plate (dien-plate) was newly synthesized, and was evaluated by a flow analytical (FA) system, which consists of a photocatalytic reactor and a spectrophotometer, to continuously monitor the absorbance of tested chemicals. The method was not required to collect any sample solution at a constant period. The SiT-dien-plate facilitated the photodecomposition of methylene blue (MB) and indigo carmine (InC) in aqueous solutions. Notably, MB was quantitatively photo-decomposed following 18 h of UV-light irradiation, related to the electrostatic adsorption of surface-bound particles. A water-treatment ability of visible-light-responsive vanadium-modified nitrogen/ silica co-doped titanium dioxide fixed on the dien-plate was also evaluated by the FA system. It clarified to decompose MB and InC under visible-light irradiation. Finally, the decomposition of a humic substance dissolved from Middle West China peaty soils by the SiT-dien-plate under UV-irradiation was assessed as applying the FA system with a photocatalytic plate.

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“…Since the pioneering work of Asahi [13], nitrogen incorporation into the anionic sublattice of titanium dioxide has been expected to bring significant improvement in the photocatalytic and photoelectrochemical behaviour in comparison with the unmodified TiO 2 [14][15][16][17][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

“…They showed that N-doped samples revealed a shift in the photoresponse towards visible range of electromagnetic spectrum and improved photocurrent density under visible radiation. Babu et al [26] reported that N-TiO 2 prepared by electrospinning followed by the annealing at high temperatures exhibited reduced band gap energy and improved photoconversion efficiency (0.8%) as compared to that of pure TiO 2 nanostructures (0.09%). Wang et al [27] discussed efficient hydrogen generation by photocatalytic water splitting using N-doped TiO 2 thin films deposited by rf reactive magnetron sputtering.…”

Section: Introductionmentioning

confidence: 99%

Study of N-doped TiO₂ thin films for photoelectrochemical hydrogen generation from water

et al. 2015

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Abstract:The present work deals with nitrogen-doped stoichiometric TiO 2 :N and non-stoichiometric TiO 2−x :N thin films deposited by means of dc-pulsed reactive sputtering for application as photoanodes for hydrogen generation from water, using solar energy. Stoichiometric thin films of TiO 2 crystallize as a mixture of anatase and rutile while rutile phase predominates in TiO 2 :N at higher nitrogen flow rates as shown by X-ray diffraction at grazing incidence, XRD GID. Lack of bulk nitridation of stoichiometric TiO 2 :N is indicated by valence-to-core X-ray emission spectroscopy, XES, analysis. The energy band gap as well as flat band potential remain almost unaffected by increasing nitrogen flow rate in this case. In contrast to that, non-stoichiometric thin films of TiO 2-x :N demonstrate systematic evolution of the structural, morphological, optical and photolectrochemical properties upon increasing level of nitrogen doping. Pronounced changes in the growth pattern of non-stoichiometric TiO 2-x :N upon varied nitrogen flow rate, demonstrated by scanning electron microscopy, SEM, can be easily correlated with the crystallographic properties studied by XRD GID. Relative positions of Kβ'' XES lines of the TiO 2-x :N thin films, which depend strongly on the nature of the ligands and their local coordination, change with the increasing nitrogen flow. Doping of nonstoichiometric titanium dioxide with nitrogen shifts the absorption spectrum towards the visible range and increases considerably the flat band potential which is beneficial for water photolysis.

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Visible light photocatalytic water splitting for hydrogen production from N-TiO2 rice grain shaped electrospun nanostructures

Cited by 155 publications

References 50 publications

Review of one-dimensional and two-dimensional nanostructured materials for hydrogen generation

Review of one-dimensional and two-dimensional nanostructured materials for hydrogen generation

Evaluation of the Water-treatment Ability of Silica-doped Titanium Dioxide-coated Glass Plates Using a Cationic Coupling Reagent Based on a Flow Analytical System

Study of N-doped TiO₂ thin films for photoelectrochemical hydrogen generation from water

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Visible light photocatalytic water splitting for hydrogen production from N-TiO2 rice grain shaped electrospun nanostructures

Cited by 155 publications

References 50 publications

Review of one-dimensional and two-dimensional nanostructured materials for hydrogen generation

Review of one-dimensional and two-dimensional nanostructured materials for hydrogen generation

Evaluation of the Water-treatment Ability of Silica-doped Titanium Dioxide-coated Glass Plates Using a Cationic Coupling Reagent Based on a Flow Analytical System

Study of N-doped TiO2 thin films for photoelectrochemical hydrogen generation from water

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Study of N-doped TiO₂ thin films for photoelectrochemical hydrogen generation from water