Electronic Properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" id="M1"><mml:mtext>T</mml:mtext><mml:mtext>i</mml:mtext><mml:msub><mml:mrow><mml:mtext>O</mml:mtext></mml:mrow><mml:mrow><mml:mtext>2</mml:mtext></mml:mrow></mml:msub></mml:math>Nanoparticles Films and the Effect on Apatite-Forming Ability

Löberg, Johanna; Holmberg, Jenny Perez; Mattisson, Ingela; Arvidsson, Anna; Ahlberg, Elisabet

doi:10.1155/2013/139615

Cited by 15 publications

(8 citation statements)

References 62 publications

(75 reference statements)

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“…K + cation in the present case which adsorbed on the surface of electrode. The peak at less negative potentials was attributed to filling of surface states below the conduction band, might be due to reduction of Ti(IV) to Ti(III) and the formation of TiO(OH) is also possible in alkaline solution (Equation and )

{Ti}^{IV} {normalO}_{2} + {normalH}^{+} + e \Leftrightarrow {Ti}^{IV} {normalO}_{2} false(normale -_{CB} false) false(H^{+} false)

{Ti}^{IV} {normalO}_{2} + {normalH}^{+} + e - \Leftrightarrow {Ti}^{III} {normalO}_{2} false(H^{+} false)

…”

Section: Resultsmentioning

confidence: 99%

Sol‐gel–mediated synthesis of TiO₂ nanocrystals: Structural, optical, and electrochemical properties

Sharma

Sarkar

Jha

et al. 2019

Int J Applied Ceramic Tech

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Nanoparticles of titanium dioxide were prepared using the sol-gel method without any impurity. Rietveld refinement of XRD data confirmed the anatase phase of synthesized nanoparticles with space group I4 1/ amd (141). XRD pattern revealed the crystalline nature of synthesized nanopowder. The average crystallite size of synthesized nanoparticles was calculated 7.5 nm. The electrochemical performance of synthesized TiO 2 nanopowder was investigated as working electrode. The electrochemical reaction was found diffusion-controlled as observed from cyclic voltammetry (CV) studies at different scan rates. The diffusion-controlled charge storage mechanism also confirmed by charge transfer resistance and Warburg impedance, as calculated from the EIS analysis. SEM micrograph showed the plate-like structure grown in cluster cloud of particles of synthesized TiO 2 nanocrystals. Absorbance and optical bandgap were obtained using UV-Vis spectra. De-convoluted PL spectra provided the emission pattern from the ultra-violet region to green region due to the presence of interstitial oxygen vacancies. The tune bandgap with EIS measurements of synthesized TiO 2 nanoparticles offers its potential application in energy storage devices and photovoltaic applications. K E Y W O R D SAnatase TiO 2 , CV studies, EIS, PL emission, X-ray diffraction

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{Ti}^{IV} {normalO}_{2} + {normalH}^{+} + e \Leftrightarrow {Ti}^{IV} {normalO}_{2} false(normale -_{CB} false) false(H^{+} false)

{Ti}^{IV} {normalO}_{2} + {normalH}^{+} + e - \Leftrightarrow {Ti}^{III} {normalO}_{2} false(H^{+} false)

…”

Section: Resultsmentioning

confidence: 99%

Sol‐gel–mediated synthesis of TiO₂ nanocrystals: Structural, optical, and electrochemical properties

Sharma

Sarkar

Jha

et al. 2019

Int J Applied Ceramic Tech

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“…The driving force for electron transfer between the covalently bound acenes and nanostructured anatase TiO 2 was investigated using a combination of SEC, CV, and steady-state absorption spectroscopy. The acene ionization potentials, TiO 2 electron affinity from the literature, 53 exciton energies, and driving forces for charge transfer are shown in Table 1 . Singlet energies were determined from the intersection between absorption and photoluminescence spectra (ESI Fig.…”

Section: Resultsmentioning

confidence: 99%

Dynamics of singlet fission and electron injection in self-assembled acene monolayers on titanium dioxide

et al. 2018

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“…This is consistent with previous studies where TiO 2 containing materials promoted the absorption of Ca 2+ and PO 4 3− . [83]…”

Section: Resultsmentioning

confidence: 99%

Biomimetic polyurethane/TiO2 nanocomposite scaffolds capable of promoting biomineralization and mesenchymal stem cell proliferation

Zhu

Fan

et al. 2018

Materials Science and Engineering: C

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Scaffolds with extracellular matrix-like fibrous morphology, suitable mechanical properties, biomineralization capability, and excellent cytocompatibility are desired for bone regeneration. In this work, fibrous and degradable poly(ester urethane)urea (PEUU) scaffolds reinforced with titanium dioxide nanoparticles (nTiO) were fabricated to possess these properties. To increase the interfacial interaction between PEUU and nTiO, poly(ester urethane) (PEU) was grafted onto the nTiO. The scaffolds were fabricated by electrospinning and exhibited fiber diameter of <1μm. SEM and EDX mapping results demonstrated that the PEU modified nTiO was homogeneously distributed in the fibers. In contrast, severe agglomeration was found in the scaffolds with unmodified nTiO. PEU modified nTiO significantly increased Young's modulus and tensile stress of the PEUU scaffolds while unmodified nTiO significantly decreased Young's modulus and tensile stress. The greatest reinforcement effect was observed for the scaffold with 1:1 ratio of PEUU and PEU modified nTiO. When incubating in the simulated body fluid over an 8-week period, biomineralization was occurred on the fibers. The scaffolds with PEU modified nTiO showed the highest Ca and P deposition than pure PEUU scaffold and PEUU scaffold with unmodified nTiO. To examine scaffold cytocompatibility, bone marrow-derived mesenchymal stem cells were cultured on the scaffold. The PEUU scaffold with PEU modified nTiO demonstrated significantly higher cell proliferation compared to pure PEUU scaffold and PEUU scaffold with unmodified nTiO. The above results demonstrate that the developed fibrous nanocomposite scaffolds have potential for bone tissue regeneration.

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Electronic Properties ofTiO2Nanoparticles Films and the Effect on Apatite-Forming Ability

Cited by 15 publications

References 62 publications

Sol‐gel–mediated synthesis of TiO₂ nanocrystals: Structural, optical, and electrochemical properties

Sol‐gel–mediated synthesis of TiO₂ nanocrystals: Structural, optical, and electrochemical properties

Dynamics of singlet fission and electron injection in self-assembled acene monolayers on titanium dioxide

Biomimetic polyurethane/TiO2 nanocomposite scaffolds capable of promoting biomineralization and mesenchymal stem cell proliferation

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Electronic Properties ofTiO2Nanoparticles Films and the Effect on Apatite-Forming Ability

Cited by 15 publications

References 62 publications

Sol‐gel–mediated synthesis of TiO2 nanocrystals: Structural, optical, and electrochemical properties

Sol‐gel–mediated synthesis of TiO2 nanocrystals: Structural, optical, and electrochemical properties

Dynamics of singlet fission and electron injection in self-assembled acene monolayers on titanium dioxide

Biomimetic polyurethane/TiO2 nanocomposite scaffolds capable of promoting biomineralization and mesenchymal stem cell proliferation

Contact Info

Product

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Sol‐gel–mediated synthesis of TiO₂ nanocrystals: Structural, optical, and electrochemical properties

Sol‐gel–mediated synthesis of TiO₂ nanocrystals: Structural, optical, and electrochemical properties