Electrospun PVDF–TiO2 with tuneable TiO2 crystal phases: synthesis and application in photocatalytic redox reactions

A review is given of the field of mineral colloidal liquid crystals : liquid crystal phases formed by individual mineral particles within colloidal suspensions. Starting from their discovery in the 1920s, we discuss developments on the levels of both fundamentals and applications. We conclude by highlighting some promising results from recent years, which may point the way towards future developments.

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Crystal phase-dependent electrocatalytic hydrogen evolution performance of ruthenium–boron intermetallics

Chemical Communications ◽

10.1039/d0cc00070a ◽

2020 ◽

Vol 56 (20) ◽

pp. 3061-3064 ◽

Cited By ~ 3

Author(s):

Xu Zou ◽

Lina Wang ◽

Xuan Ai ◽

Hui Chen ◽

Xiaoxin Zou

Keyword(s):

Hydrogen Evolution ◽

Crystal Phase ◽

Crystal Phases ◽

Activity Trends

Four crystal phases of ruthenium–boron intermetallics, including Ru7B3, RuB, Ru2B3 and RuB2, are selectively synthesized and their activity trends toward the HER are investigated.

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Effect of crystal phase composition on the reductive and oxidative abilities of TiO2 nanotubes under UV and visible light

Applied Catalysis B Environmental ◽

10.1016/j.apcatb.2010.04.017 ◽

2010 ◽

Vol 97 (3-4) ◽

pp. 354-360 ◽

Cited By ~ 73

Author(s):

Kevin L. Schulte ◽

Paul A. DeSario ◽

Kimberly A. Gray

Keyword(s):

Phase Composition ◽

Visible Light ◽

Tio2 Nanotubes ◽

Crystal Phase

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Crystal phase effect upon O2 activation on gold surfaces through intrinsic strain

Nanoscale ◽

10.1039/c9nr04510d ◽

2019 ◽

Vol 11 (31) ◽

pp. 14587-14591 ◽

Cited By ~ 2

Author(s):

Lixiang Zhong ◽

Shuzhou Li

Keyword(s):

Crystal Phase ◽

Gold Surfaces ◽

Phase Effect ◽

O2 Activation ◽

Crystal Phases ◽

Intrinsic Strain

Different crystal phases have remarkably different surface reactivities due to their distinct intrinsic surface strains even for close-packed surfaces.

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Optimization of Active Sites via Crystal Phase, Composition, and Morphology for Efficient Low‐Iridium Oxygen Evolution Catalysts

Angewandte Chemie International Edition ◽

10.1002/anie.202006756 ◽

2020 ◽

Vol 59 (44) ◽

pp. 19654-19658 ◽

Cited By ~ 4

Author(s):

Hui Chen ◽

Lei Shi ◽

Xiao Liang ◽

Lina Wang ◽

Tewodros Asefa ◽

...

Keyword(s):

Phase Composition ◽

Oxygen Evolution ◽

Active Sites ◽

Crystal Phase

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Mechanism of Synthesizing Al2O3/Fe-Al Composites with Nano Al2O3 Fibers by In Situ Process

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.562-565.837 ◽

2013 ◽

Vol 562-565 ◽

pp. 837-841

Author(s):

Chen Jing Lu ◽

Shu Xia Ren ◽

Jian Lei Wang ◽

Gang Yu

Keyword(s):

Phase Composition ◽

Elemental Composition ◽

Partial Oxidation ◽

Aluminum Content ◽

Sintering Temperature ◽

Crystal Phase ◽

In Situ Composite ◽

Al Content ◽

Crystal Composition

In-situ composite of Al2O3/Fe-Al with Al2O3 fibers were prepared by partial oxidation of oxygen to Fe powder and Al power, crystal phase composition and elemental composition were analyzed by XRD, NORAN. The results indicated that, the crystal composition is determined by Aluminum content, when the content is enough, FeAl3, Al and Al2O3 will be gain, on the contrary, Fe2Al, FeAl, Fe3Al and Al2O3 will be gain; Al2O3 fibers were synthesized via VLS process, the quantity of Al2O3 fibers increased with the Al content, the whisker’s diameter was improved with increasing of sintering temperature.

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Control of the Crystal Phase Composition of FexOy Nanopowders Prepared by CO2 Laser Vaporization

Crystal Growth & Design ◽

10.1021/cg4010533 ◽

2013 ◽

Vol 13 (11) ◽

pp. 4868-4876 ◽

Cited By ~ 17

Author(s):

Christian Stötzel ◽

Heinz-Dieter Kurland ◽

Janet Grabow ◽

Silvio Dutz ◽

Eberhard Müller ◽

...

Keyword(s):

Phase Composition ◽

Co2 Laser ◽

Crystal Phase ◽

Laser Vaporization

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Influence of Different Solvents and High-Electric-Field Cycling on Morphology and Ferroelectric Behavior of Poly(Vinylidene Fluoride-Hexafluoropropylene) Films

Materials ◽

10.3390/ma14143884 ◽

2021 ◽

Vol 14 (14) ◽

pp. 3884

Author(s):

Till Mälzer ◽

Lena Mathies ◽

Tino Band ◽

Robert Gorgas ◽

Hartmut S. Leipner

Keyword(s):

Phase Composition ◽

Electric Field ◽

Surface Structure ◽

Electric Fields ◽

Vinylidene Fluoride ◽

High Electric Field ◽

Crystal Phase ◽

Shielding Effect ◽

Ferroelectric Behavior ◽

Field Cycling

P(VdF-HFP) films are fabricated via a solution casting doctor blade method using high (HVS) and low (LVS) volatile solvents, respectively. The structural properties and the ferroelectric behavior are investigated. The surface structure and crystal phase composition are found to be strongly dependent on the type of solvent. LVS leads to a rougher copolymer surface structure with large spherulites and a lower crystallinity in contrast with HVS. The crystalline phase of copolymer films fabricated with HVS consists almost exclusively of α-phase domains, whereas films from LVS solution show a large proportion of γ-phase domains, as concluded from Raman and X-ray diffraction spectra. Virgin films show no ferroelectric (FE) switching polarization at electric field amplitudes below 180 MV/m, independent of the solvent type, observed in bipolar dielectric displacement—electric field measurements. After applying electric fields of above 180 MV/m, a FE behavior emerges, which is significantly stronger for LVS films. In a repeated measurement, FE polarization switching already occurs at lower fields. A shielding effect may be related to this observation. Additionally, Raman bands of polar γ-phase increase by high-electric-field cycling for the LVS sample. The solvent used and the resulting crystal phase composition of the virgin sample is crucial for the copolymer behavior during bipolar electrical cycling.

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Boosting acetone oxidation efficiency over MnO2 nanorods by tailoring crystal phases

New Journal of Chemistry ◽

10.1039/c9nj04192c ◽

2019 ◽

Vol 43 (48) ◽

pp. 19126-19136 ◽

Cited By ~ 6

Author(s):

Li Cheng ◽

Jinguo Wang ◽

Chi Zhang ◽

Bei Jin ◽

Yong Men

Keyword(s):

Crystal Phase ◽

Crystal Phases ◽

Oxidation Efficiency ◽

Catalytic Performances

MnO2 nanorods with different crystal phases (e.g. α-, β- and γ-MnO2) exhibited distinct crystal-phase dependent catalytic performances for acetone oxidation.

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