Physico-chemical, photo-catalytic and O2-adsorption properties of TiO2 nanotubes coated with gold nanoparticles

This study focused on the application of mesoporous silica monoliths for the removal of organic pollutants. The physico-chemical textural and surface properties of the monoliths were investigated. The homogeneity of the textural properties along the entire length of the monoliths was assessed, as well as the reproducibility of the synthesis method. The adsorption properties of the monoliths for gaseous toluene, as a model of Volatile Organic Compounds (VOCs), were evaluated and compared to those of a reference meso-structured silica powder (MCM-41) of commercial origin. Silica monoliths adsorbed comparable amounts of toluene with respect to MCM-41, with better performances at low pressure. Finally, considering their potential application in water phase, the adsorption properties of monoliths toward Rhodamine B, selected as a model molecule of water soluble pollutants, were studied together with their stability in water. After 24 h of contact, the silica monoliths were able to adsorb up to the 70% of 1.5 × 10−2 mM Rhodamine B in water solution.

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Preparation and Adsorption Properties of Pd Nanoparticles Supported on TiO2 Nanotubes

The Journal of Physical Chemistry C ◽

10.1021/jp107791r ◽

2010 ◽

Vol 114 (47) ◽

pp. 20146-20154 ◽

Cited By ~ 19

Author(s):

Andrei Honciuc ◽

Mathias Laurin ◽

Sergiu Albu ◽

Max Amende ◽

Marek Sobota ◽

...

Keyword(s):

Tio2 Nanotubes ◽

Pd Nanoparticles ◽

Adsorption Properties

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Interaction of osteoblast -TiO2 nanotubes in vitro: The combinatorial effect of surface topography and other physico-chemical factors governs the cell fate

Applied Surface Science ◽

10.1016/j.apsusc.2018.01.160 ◽

2018 ◽

Vol 449 ◽

pp. 152-165 ◽

Cited By ~ 13

Author(s):

Sahely Saha ◽

Ravi Kumar ◽

Krishna Pramanik ◽

Amit Biswas

Keyword(s):

Surface Topography ◽

Cell Fate ◽

Tio2 Nanotubes ◽

Physico Chemical ◽

Chemical Factors ◽

Effect Of Surface

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Effect of adsorption properties of phosphorus-doped TiO2 nanotubes on photocatalytic NO removal

Journal of Colloid and Interface Science ◽

10.1016/j.jcis.2019.06.063 ◽

2019 ◽

Vol 553 ◽

pp. 647-654 ◽

Cited By ~ 7

Author(s):

Rui Huang ◽

Shule Zhang ◽

Jie Ding ◽

Yahan Meng ◽

Qin Zhong ◽

...

Keyword(s):

Tio2 Nanotubes ◽

Adsorption Properties ◽

No Removal ◽

Doped Tio2 ◽

Phosphorus Doped

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Moxifloxacin Hydrochloride Electrochemical Detection at Gold Nanoparticles Modified Screen-Printed Electrode

Sensors ◽

10.3390/s20102797 ◽

2020 ◽

Vol 20 (10) ◽

pp. 2797 ◽

Cited By ~ 6

Author(s):

M. Shehata ◽

Amany M. Fekry ◽

Alain Walcarius

Keyword(s):

Gold Nanoparticles ◽

Chemical Characterization ◽

Differential Pulse ◽

Carbon Composite ◽

Rapid Screening ◽

Composite Electrodes ◽

Carbon Paste ◽

Screen Printed Electrode ◽

Physico Chemical ◽

Screen Printed

It appeared that either the carbon paste or the screen-printed carbon electrodes that were modified with gold nanoparticles (AuNPs) gave rise to the largest current responses after a rapid screening of various nanomaterials as modifiers of carbon composite electrodes in view of designing an electrochemical sensor for Moxifloxacin Hydrochloride (Moxi). The screen-printed electrode (SPE) support was preferred over the carbon paste one for its ability to be used as disposable single-use sensor enabling the circumvention of the problems of surface fouling encountered in the determination of Moxi. The response of AuNPs modified SPE to Moxi was investigated by cyclic voltammetry (CV) (including the effect of the potential scan rate and the pH of the medium), chronoamperometry, and differential pulse voltammetry (DPV) after morphological and physico-chemical characterization. DPV was finally applied to Moxi detection in phosphate buffer at pH 7, giving rise to an accessible concentration window ranging between 8 µM and 0.48 mM, and the detection and quantification limits were established to be 11.6 µM and 38.6 µM, correspondingly. In order to estimate the applicability of Moxi identification scheme in actual trials, it was practiced in a human baby urine sample with excellent recoveries between 99.8 % and 101.6 % and RSDs of 1.1–3.4%, without noticeable interference.

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