Preparation of hybrid pigments via adsorption of selected food dyes onto inorganic oxides based on anatase titanium dioxide

Siwińska-Stefańska, Katarzyna; Nowacka, Magdalena; Kołodziejczak-Radzimska, Agnieszka; Jesionowski, Teofil

doi:10.1016/j.dyepig.2012.01.017

Cited by 40 publications

(20 citation statements)

References 23 publications

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“…It is not only used as a white pigment for manufacturing drugs and tablets but also as a filler and pigment (Siwińska-Stefańska et al 2012). Therefore adsorption of dyes food and pharmaceuticals on precipitated inorganic materials raises concerns ).…”

Section: Food Personal Care and Pharmaceutical Industrymentioning

confidence: 99%

Modified titanium oxide (TiO₂) nanocomposites and its array of applications: a review

Ghosh

Das

2015

Toxicological & Environmental Chemistry

121

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Titania (TiO 2 ) has been the focus of attention of researchers since the first demonstration of its capability to generate photocatalytic splitting of water into hydrogen and oxygen. However there seems to be a recent surge in the research activity involving modified TiO 2 nanoparticles (NP), which are considered to be more effective due to different physicochemical properties in comparison to unmodified fine particle analogs. Several strategies have been employed to modify titania to reduce recombination rates of photogenerated charge carriers to enhance optimal functioning of TiO 2 . Doping with cations and anions and coupling it with another semiconductor are the most well-known modification methods used. Titania nanocomposites are known to have a plethora of applications. Photoexcitation of these particles are seen to be extraordinarily effective in eliciting microbial death which makes it an attractive candidate for manufacturing of antimicrobial coatings. On the other hand, TiO 2 induces oxidation of various organic refractory compounds like tetracycline, sulfamethazine, and bisphenol. The photoelectrocatalytic oxidation technique which amalgamates the principle of photocatalysis and electrolysis serves as a newer, unswerving and cost effective water treatment process. In the biomedical arena, use is now acknowledged for photodynamic therapy of cancer, cell imaging, biological sensors, drug delivery system and as endonucleases. In the commercial front, it is utilized in creams owing to its small particle size which facilitates absorption through skin. It is also employed as UV blocking agents in sunscreen and commonly encountered as a brilliant white pigment in paint due to its brightness, high refractive index and resistance to discoloration.Its use in solar cells has also been reported. This review aims to encompass the new progress of modified TiO2 nanocomposites for efficient applications, emphasizing the future trends of TiO2 in arenas like healthcare, environment, biomedical, food, personal care and pharmacy and also highlights the commercial implications of this promising nanomaterial.

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Section: Food Personal Care and Pharmaceutical Industrymentioning

confidence: 99%

Modified titanium oxide (TiO₂) nanocomposites and its array of applications: a review

Ghosh

Das

2015

Toxicological & Environmental Chemistry

121

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“…However this amount can be reduced by the selection of an appropriate heat treatment technique , which directly determines the surface activity, translating into a number of reactive silanol and magnesil groups (:Si-OH and -Mg-OH). Due to the preparation of the synthetic oxide adsorbent in the laboratory, it was necessary to determine its crystal structure, which in the case of similar oxide systems such as TiO 2 ÁSiO 2 plays an important role in their applications (Siwińska-Stefańska et al 2012). The results showed that the resulting oxide system has a completely amorphous structure (Fig.…”

Section: Adsorbent Characteristicmentioning

confidence: 99%

Adsorption of Ni(II) from model solutions using co-precipitated inorganic oxides

et al. 2013

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The aim of this work was to obtain an inorganic oxide system containing silica and magnesium oxide, and characterized by specific physicochemical properties, in particular well-defined adsorption parameters. The preparation process was carried out according to a co-precipitation method using solutions of sodium silicate and selected inorganic magnesium salt. The oxide system obtained (MgOÁSiO 2 ) was used as a support (adsorbent) of nickel(II) ions, whose precursors were model solutions of nitrates. The effectiveness of the adsorption process was evaluated using many different analytical techniques, including atomic absorption spectroscopy, energy dispersive X-ray spectroscopy and equivalent point titration. Moreover the stability of adsorbent/adsorbate bonding was estimated. The oxide systems-adsorbents-used in the process were also analyzed according to their physicochemical properties, especially changes in adsorption parameters. The last part of the study involved evaluation of the kinetics of the adsorption process depending on time and the pH of the reaction system.

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“…With an ever‐increasing need of microbe resistance to antimicrobial drugs, particularly antibiotics, there is an urgent demand for new classes of compounds that will efficiently inhibit the growth of pathogenic microorganisms [4]. Titanium dioxide is an important and cheap material for a variety of applications such as catalytic devices [5], solar cells [6], and other optoelectronic devices [7]. The inherent behavior of titanium dioxide, especially its catalytic property, has been shown to be strongly related to its crystal structure and grain size [8, 9].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of electrospun polyurethane/inorganic‐particles nanofibers

Han

Huang

et al. 2012

Polymer Composites

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To develop a novel functional fibrous scaffold, a blend‐electrospinning technique was applied to transfer polyurethane/inorganic‐particles solutions into nanofibers, in which titanium dioxide, copper, or/and silver nanoparticles were used. The resultant nanofibers were subsequently characterized by means of scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, and tensile mechanical test. Furthermore, the structural change and the thermal properties of the electrospun fabrics were examined by X‐ray diffraction and differential scanning calorimetry, respectively. Antibacterial performance of the resulting nanofibrous mats on Escherichia coli and Staphylococcus aureus was also measured. Experimental results have shown that when the ratio of polyurethane solution and titanium dioxide sol was in 3.5:1, 89.55% of the Escherichia coli and 82.35% of the Staphylococcus aureus bacteria were killed under a UV‐light activation. However, the introduction of silver or/and cuprum nanoparticles into the polyurethane/TiO2 (in the ratio of 3.5:1) nanofibers led to a significant improvement in their antibacterial ability without any photocatalysis.POLYM. COMPOS., 33:2045–2057, 2012. © 2012 Society of Plastics Engineers

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Preparation of hybrid pigments via adsorption of selected food dyes onto inorganic oxides based on anatase titanium dioxide

Cited by 40 publications

References 23 publications

Modified titanium oxide (TiO₂) nanocomposites and its array of applications: a review

Modified titanium oxide (TiO₂) nanocomposites and its array of applications: a review

Adsorption of Ni(II) from model solutions using co-precipitated inorganic oxides

Preparation and characterization of electrospun polyurethane/inorganic‐particles nanofibers

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Preparation of hybrid pigments via adsorption of selected food dyes onto inorganic oxides based on anatase titanium dioxide

Cited by 40 publications

References 23 publications

Modified titanium oxide (TiO2) nanocomposites and its array of applications: a review

Modified titanium oxide (TiO2) nanocomposites and its array of applications: a review

Adsorption of Ni(II) from model solutions using co-precipitated inorganic oxides

Preparation and characterization of electrospun polyurethane/inorganic‐particles nanofibers

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Product

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Modified titanium oxide (TiO₂) nanocomposites and its array of applications: a review

Modified titanium oxide (TiO₂) nanocomposites and its array of applications: a review