Three-dimensional graphene/titanium dioxide composite for enhanced U(VI) capture: Insights from batch experiments, XPS spectroscopy and DFT calculation

New poly (δ-valerolactone)/titanium dioxide (PDVL/TiO2) nanocomposites with different TiO2 nanoparticle loadings were prepared by the solvent-casting method and characterized by Fourier transform infra-red, differential scanning calorimetry, X-ray diffraction and scanning electron microscopy, and thermogravimetry analyses. The results obtained reveal good dispersion of TiO2 nanoparticles in the polymer matrix and non-formation of new crystalline structures indicating the stability of the crystallinity of TiO2 in the composite. A significant increase in the degree of crystallinity was observed with increasing TiO2 content. The non-isothermal crystallization kinetics of the PDVL/TiO2 system indicate that the crystallization process involves the simultaneous occurrence of two- and three-dimensional spherulitic growths. The thermal degradation analysis of this nanocomposite reveals a significant improvement in the thermal stability with increasing TiO2 loading.

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Ultradispersed titanium dioxide nanoparticles embedded in a three-dimensional graphene aerogel for high performance sulfur cathodes

RSC Advances ◽

10.1039/c8ra10397f ◽

2019 ◽

Vol 9 (12) ◽

pp. 6568-6575 ◽

Cited By ~ 1

Author(s):

Mengmeng Liu ◽

Xiaohang Zhu ◽

Tianye Ma ◽

Congcong Zhang ◽

Xiang Chen ◽

...

Keyword(s):

Titanium Dioxide ◽

Electrochemical Performance ◽

Cathode Material ◽

High Performance ◽

Titanium Dioxide Nanoparticles ◽

Three Dimensional ◽

Graphene Aerogel ◽

Excellent Electrochemical Performance ◽

Sulfur Cathodes

GA–TiO2 composites as a cathode material realize an excellent electrochemical performance in Li–S batteries.

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Efficient highly flexible dye sensitized solar cells of three dimensional graphene decorated titanium dioxide nanoparticles on plastic substrate

Journal of Power Sources ◽

10.1016/j.jpowsour.2015.02.001 ◽

2015 ◽

Vol 281 ◽

pp. 404-410 ◽

Cited By ~ 33

Author(s):

Jian Zhi ◽

Houlei Cui ◽

Angran Chen ◽

Yian Xie ◽

Fuqiang Huang

Keyword(s):

Titanium Dioxide ◽

Solar Cells ◽

Titanium Dioxide Nanoparticles ◽

Dye Sensitized Solar Cells ◽

Three Dimensional ◽

Plastic Substrate ◽

Dye Sensitized ◽

Sensitized Solar Cells

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Photoelectric properties of three‐dimensional urchin‐like zinc oxide/titanium dioxide composite micronanostructures

Micro & Nano Letters ◽

10.1049/mnl.2015.0394 ◽

2016 ◽

Vol 11 (5) ◽

pp. 277-280 ◽

Cited By ~ 1

Author(s):

Yi Zhou ◽

Luyue Yang ◽

Jun Lu ◽

Yiwei Wu ◽

Chaocheng Li ◽

...

Keyword(s):

Zinc Oxide ◽

Titanium Dioxide ◽

Three Dimensional ◽

Photoelectric Properties

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Three-Dimensional Analysis of the Swimming Behavior of Daphnia magna Exposed to Nanosized Titanium Dioxide

PLoS ONE ◽

10.1371/journal.pone.0080960 ◽

2013 ◽

Vol 8 (11) ◽

pp. e80960 ◽

Cited By ~ 27

Author(s):

Christian Noss ◽

André Dabrunz ◽

Ricki R. Rosenfeldt ◽

Andreas Lorke ◽

Ralf Schulz

Keyword(s):

Titanium Dioxide ◽

Daphnia Magna ◽

Dimensional Analysis ◽

Three Dimensional ◽

Swimming Behavior ◽

Nanosized Titanium Dioxide

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Plasmon-Enhanced Performance of an Array of Core-Shell Silver Nanoparticles Photodeposited onto a Titanium Dioxide Layer

Materials Science Forum ◽

10.4028/www.scientific.net/msf.860.35 ◽

2016 ◽

Vol 860 ◽

pp. 35-38

Author(s):

Chou Chau Yuan-Fong

Keyword(s):

Silver Nanoparticles ◽

Titanium Dioxide ◽

Incident Angle ◽

Three Dimensional ◽

Rotating Disk ◽

Core Shell ◽

Disk System ◽

Photocatalytic Reactor ◽

Dimensional Finite Element ◽

Three Dimensional Finite Element

A plasmonic photocatalytic reactor which composed of a periodic array of core-shell silver nanoparticles (CSSNPs) photodeposited onto a Titanium Dioxide (TiO2) thin film in a multilayer rotating-disk system was numerically investigated by using three-dimensional finite element method. Results show that the proposed structure can exhibit much higher photocalytic activity in a broad range of incident angle of light that are not observed for the same counterpart without the CSSNPs on the SiO2 surface. The enhanced electric field distribution and intensity could be expanded as the inner diameter of CSSNPs and incident angle of light increased.

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Structural characterization and DFT calculation of the Fe–C coordinating bond in bis(tert-butyl isocyanide) iron(II) phthalocyanine

Journal of Porphyrins and Phthalocyanines ◽

10.1142/s1088424613500181 ◽

2013 ◽

Vol 17 (08n09) ◽

pp. 742-749 ◽

Cited By ~ 4

Author(s):

Jan Janczak ◽

Ryszard Kubiak ◽

Jerzy Lisowski

Keyword(s):

Dft Calculation ◽

Three Dimensional ◽

Molecular Orbital Calculations ◽

Direct Reaction ◽

Monoclinic System ◽

Tert Butyl ◽

Phthalocyanine Complex ◽

Intermediate Spin ◽

Similar Conformation ◽

Spin Complex

Bis(tert-butyl isocyanide) iron(II) phthalocyanine complex in the crystalline form was obtained by a direct reaction of β- FePc with tert-butyl isocyanide. This complex crystallizes in the centrosymmetric space group P 21/c of the monoclinic system. The Fe ( II ) cation is equatorially ligated by the four N-isoindole atoms of Pc2- macrocycle and axially by the C atom of tert-butyl isocyanide on both sides of a planar FePc molecule. Gas-phase conformation of the bis(tert-butyl isocyanide) iron(II) phthalocyanine molecule obtained by molecular orbital calculations shows a similar conformation as in the crystal. In both phases (solid and gas) a similar correlation between the equatorial Fe – N and axial Fe – C bonds are observed. Steric hindrance of the tert-butyl isocyanide molecules ligated to Fe in axial positions of planar FePc leads to the lowering of the π–π interaction between the π-clouds of Pc macrorings and makes the crystals of the bis(tert-butyl isocyanide) iron(II) phthalocyanine complex better soluble in the most organic solvents than the parent FePc compound. EPR and magnetic susceptibility measurements clearly show that ligation of the intermediate spin FePc by tert-butyl isocyanide leads to the change of the ground state from S = 1 (for FePc , eg3b2g2a1g1) to S = 0 yielding the low-spin complex (( CH 3)3 C - N ≡ C )2 FePc , eg4b2g2). The calculated three-dimensional MESP maps are helpful for understanding of the interaction between the FePc and tert-butyl isocyanide molecules forming bis(tert-butyl isocyanide) iron(II) phthalocyanine complex.

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