Nanosized WO3 thin film as a multifunctional hydrogen material for achieving photolysis in CuCl films via hydrogen photosensitization

Gavrilyuk, Alexander

doi:10.1016/j.solmat.2009.11.016

Cited by 11 publications

(2 citation statements)

References 57 publications

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“…The spectrum of a high-pressure mercury lamp contains a series of bands in the UV range, and the band at 3.40 eV ( λ = 365 nm) is the most intense. 41 However, this irradiation band cannot efficiently generate electron–hole pairs in P 500 , since the energy of the photons is less than the band gap. When we replaced the quartz window of the cell with toughened glass to exclude irradiation by photons with energies E g = 3.40 eV, P 500 showed no photochromic response.…”

Section: Resultsmentioning

confidence: 99%

Hydrogen photochromism in Nb₂O₅ powders

Pan

Wang

et al. 2014

Phys. Chem. Chem. Phys.

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In this paper, we report on the hydrogen photochromism in Nb2O5 powders with different structures. Four different powder phases were prepared by calcining Nb2O5·nH2O powders at various temperatures, and their morphology, structure, and electronic band structure were characterized by scanning electron microscopy, structural analyses, thermogravimetric analysis, differential scanning calorimetry, and optical spectroscopy. Nb2O5 powders with different structures and very different properties were formed after different high-temperature treatments of the polymorphous oxide. A pronounced photochromic effect was observed in the M and H phases of Nb2O5, whereas the other phases exhibited poor photochromic responses. Because photochromism arises due to the detachment of hydrogen atoms under the action of light from hydrogen donor molecules previously adsorbed on the oxide surface, the electronic band structure and the morphology have strong influences on the photochromic properties of Nb2O5 powders. For these reasons, a pronounced photochromic effect was achieved in the H phase.

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Section: Resultsmentioning

confidence: 99%

Hydrogen photochromism in Nb₂O₅ powders

Pan

Wang

et al. 2014

Phys. Chem. Chem. Phys.

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“…CuCl crystal has attracted a significant degree of experimental attention for its unusual electrical and optical properties. − It is interesting and unexpected that the reduction from CuCl 2 to CuCl occurs at a lower temperature in the process of carbonization of β-CD. As seen from Figure , the bulk CuCl crystal has a well-defined coralline-like macroporous structure.…”

Section: Resultsmentioning

confidence: 99%

Molecule-Ion Interaction and Its Effect on Electrostatic Interaction in the System of Copper Chloride and β-Cyclodextrin

et al. 2011

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The present work was devoted to an experimental investigation of the molecule-ion interaction between copper chloride (CuCl(2)) and β-cyclodextrin (CD) and its effect on the electrostatic interaction between Cu(2+) and Cl(-) ions. Our results gave an explicit description of the mutual effect between the interactions. First, the molecular arrangement and surface feature of β-CD experienced a fundamental structural change after interaction with Cu(2+) and Cl(-) ions, which was ascribed to a good separation of Cu(2+) from Cl(-) ions in β-CD matrix. Second, arguments based on electronic structural analysis provided a direct indication of the change in charge density distributions of Cu(2+) and Cl(-) ions in the presence of β-CD. Third, the actual occurrence of a second signal in the course of water release at a higher temperature suggested that the Cu(2+) ions were trapped in the form of hydrates in the crystal interstice of β-CD molecules. Fourth, comparison of the mass spectra indicated that the thermal decomposition of β-CD in the presence of CuCl(2) produced a series of interesting molecular ions: C(3)H(2)OH(+), C(4)H(3)OH(+), C(5)H(4)OH(+), and C(7)H(6)OH(+). We consider that this study is helpful in providing a new approach to the evaluation of the extent of the mutual effect between an inorganic salt and an organic molecule.

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Optical Properties of Hybrid Organic–Inorganic Materials and their Applications – Part I : Luminescence and Photochromism

Parola

Julián‐López

Carlos

et al. 2017

Handbook of Solid State Chemistry

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Research on hybrid inorganic–organic materials has experienced an explosive growth since the 1980s, with the expansion of soft inorganic chemistry based processes. Indeed, mild synthetic conditions, low processing temperatures provided by “chimie douce” and the versatility of the colloidal state allow for the mixing of the organic and inorganic components at the nanometer scale in virtually any ratio to produce the so‐called hybrid materials. Today a high degree of control over both composition and nanostructure of these hybrids can be achieved allowing tunable structure–property relationships. This, in turn, makes it possible to tailor and fine‐tune many properties (mechanical, optical, electronic, thermal, chemical, etc.) in very broad ranges, and to design specific multifunctional systems for applications. In particular, the field of “hybrid optics” has been very productive not only scientifically but also in terms of applications. Indeed, numerous optical devices based on hybrids are already in, or very close, to the market. This review describes most of the recent advances performed in this field. Emphasis will be given to luminescent, photochromic, NLO , and plasmonic properties. As an outlook, we show that the controlled coupling between plasmonics and luminescence is opening a land of opportunities in the field of “hybrid optics.”

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Nanosized WO3 thin film as a multifunctional hydrogen material for achieving photolysis in CuCl films via hydrogen photosensitization

Cited by 11 publications

References 57 publications

Hydrogen photochromism in Nb₂O₅ powders

Hydrogen photochromism in Nb₂O₅ powders

Molecule-Ion Interaction and Its Effect on Electrostatic Interaction in the System of Copper Chloride and β-Cyclodextrin

Optical Properties of Hybrid Organic–Inorganic Materials and their Applications – Part I : Luminescence and Photochromism

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Nanosized WO3 thin film as a multifunctional hydrogen material for achieving photolysis in CuCl films via hydrogen photosensitization

Cited by 11 publications

References 57 publications

Hydrogen photochromism in Nb2O5 powders

Hydrogen photochromism in Nb2O5 powders

Molecule-Ion Interaction and Its Effect on Electrostatic Interaction in the System of Copper Chloride and β-Cyclodextrin

Optical Properties of Hybrid Organic–Inorganic Materials and their Applications – Part I : Luminescence and Photochromism

Contact Info

Product

Resources

About

Hydrogen photochromism in Nb₂O₅ powders

Hydrogen photochromism in Nb₂O₅ powders