Effect of 1-1-charged ions on aggregative stability and electrical surface properties of aqueous suspensions of titanium dioxide

Tkachenko, Nataliya H.; Yaremko, Z. M.; Bellmann, Cornelia

doi:10.1016/j.colsurfa.2005.09.037

Cited by 15 publications

(6 citation statements)

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“…The particles in suspension are subject to the thermal Brownian motion and the rate of particles movement depends upon their size (Tkachenko et al 2006). Suspensions of 0.1% TiO 2 in DMEM and TiO 2 with 0.1% and 1% of HSA in DMEM were prepared, shaken for 2 hours, ultrasonicated for 30 sec, and analyzed.…”

Section: Methodsmentioning

confidence: 99%

Formation of potential titanium antigens based on protein binding to titanium dioxide nanoparticles

Vamanu¹

2008

IJN

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Degradation products of titanium implants include free ions, organo-metallic complexes, and particles, ranging from nano to macro sizes. The biological effects, especially of nanoparticles, is yet unknown. The main objective of this study was to develop Ti-protein antigens in physiological solutions that can be used in testing of cellular responses. For this purpose, 0.1% TiO2 nanoparticles less than 100 nm were mixed with human serum albumin (HSA), 0.1% and 1%, in cell culture medium (DMEM, pH 7.2). The Ti concentrations in the resulting solutions were analyzed by inductively coupled plasma mass spectrometry. The stability of the nanoparticles in suspension was analyzed by UV-vis spectrophotometer and Dynamic Light Scattering. The concentration of Ti in suspension was dependent on the presence and concentration of HSA. Albumin prevented high aggregation rate of TiO2 nanoparticles in cell culture medium. It is shown that nano TiO2-protein stable aggregates can be produced under physiological conditions at high concentrations, and are candidates for use in cellular tests.

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Section: Methodsmentioning

confidence: 99%

Formation of potential titanium antigens based on protein binding to titanium dioxide nanoparticles

Vamanu¹

2008

IJN

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“…Overall, it is essential to elucidate which physicochemical interactions govern particle−surface and particle−particle interactions under conditions representative of aquatic environments. While a great deal of work analyzing the behavior of micrometer-sized particles in various aquatic environments has been performed, limited data (and quantitative analysis) are available for nanosized particles, both in terms of aggregation – and deposition ,,,,,– . As a result, two key questions remain unanswered.…”

Section: Introductionmentioning

confidence: 99%

Aggregation and Deposition of Engineered Nanomaterials in Aquatic Environments: Role of Physicochemical Interactions

Petosa

Jaisi

Quevedo

et al. 2010

Environ. Sci. Technol.

1,033

830

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The ever-increasing use of engineered nanomaterials will lead to heightened levels of these materials in the environment. The present review aims to provide a comprehensive overview of current knowledge regarding nanoparticle transport and aggregation in aquatic environments. Nanoparticle aggregation and deposition behavior will dictate particle transport potential and thus the environmental fate and potential ecotoxicological impacts of these materials. In this review, colloidal forces governing nanoparticle deposition and aggregation are outlined. Essential equations used to assess particle-particle and particle-surface interactions, along with Hamaker constants for specific nanoparticles and the attributes exclusive to nanoscale particle interactions, are described. Theoretical and experimental approaches for evaluating nanoparticle aggregation and deposition are presented, and the major findings of laboratory studies examining these processes are also summarized. Finally, we describe some of the challenges encountered when attempting to quantify the transport of nanoparticles in aquatic environments.

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“…Модифікування поверхні діоксиду титану неорганічними й органічним сполуками зумовлює зміщення точки нульового заряду та зміну його електроповерхневих властивостей [4]. Однак тільки такого модифікування поверхні діоксиду титану неорганічними й органічними речовинами недостатньо для завершального регулювання колоїдно-хімічних властивостей суспензій діоксиду титану відповідно до вимог технологічних процесів, тому використовують нейонні [5,6] та йонні [7][8][9][10][11][12][13] поверхнево-активні речовини (ПАР), низькомолекулярні електроліти [14][15][16][17][18], поліелектроліти [8,19], а також зміну рН середовища [6,17,20]. Втім сукупний вплив цих чинників на колоїдно-хімічні властивості водних суспензій діоксиду титану вивчено недостатньо.…”

Section: вступunclassified

The Influence of Surfactants and Ph of Environment on the Electro-Surface Properties of Aqueous Suspension of Titanium Dioxide

Petryshyn¹,

Yaremko²

2018

Proc. Shevchenko Sci. Soc. Chem. Sci.

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Effect of 1-1-charged ions on aggregative stability and electrical surface properties of aqueous suspensions of titanium dioxide

Cited by 15 publications

References 15 publications

Formation of potential titanium antigens based on protein binding to titanium dioxide nanoparticles

Formation of potential titanium antigens based on protein binding to titanium dioxide nanoparticles

Aggregation and Deposition of Engineered Nanomaterials in Aquatic Environments: Role of Physicochemical Interactions

The Influence of Surfactants and Ph of Environment on the Electro-Surface Properties of Aqueous Suspension of Titanium Dioxide

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