Coagulation of Hydrophobic Sols in Statu Nascendi. I. Determination of Coagulation Values.

Težak, B.; Matijević, Egon; Schulz, K.

doi:10.1021/j150492a016

Cited by 66 publications

(13 citation statements)

References 8 publications

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“…time allowed for sedimentation to occur) are well controlled and carefully replicated. [111] Homoaggregation kinetics Time-resolved dynamic light scattering (TR-DLS) can measure temporal changes in the hydrodynamic diameter (D h ) of aggregates during perikinetic homoaggregation. In these experiments, homoaggregation is typically induced by adding an electrolyte to the colloidal suspension being studied.…”

Section: Measurements Of Aggregation and Deposition Kineticsmentioning

confidence: 99%

Assessing the colloidal properties of engineered nanoparticles in water: case studies from fullerene C60 nanoparticles and carbon nanotubes

Chen¹,

Smith²,

Ball³

et al. 2010

Environ. Chem.

136

114

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Environmental context. The fate and bioavailability of engineered nanoparticles in natural aquatic systems are strongly influenced by their ability to remain dispersed in water. Consequently, understanding the colloidal properties of engineered nanoparticles through rigorous characterisation of physicochemical properties and measurements of particle stability will allow for a more accurate prediction of their environmental, health, and safety effects in aquatic systems.This review highlights some important techniques suitable for the assessment of the colloidal properties of engineered nanoparticles and discusses some recent findings obtained by using these techniques on two popular carbon-based nanoparticles, fullerene C 60 and multi-walled carbon nanotubes.Abstract. The colloidal properties of engineered nanoparticles directly affect their use in a wide variety of applications and also control their environmental fate and mobility. The colloidal stability of engineered nanoparticles depends on their physicochemical properties within the given aqueous medium and is ultimately reflected in the particles' aggregation and deposition behaviour. This review presents some of the key experimental methods that are currently used to probe colloidal properties and quantify engineered nanoparticle stability in water. Case studies from fullerene C 60 nanoparticles and multi-walled carbon nanotubes illustrate how the characterisation and measurement methods are used to understand and predict nanoparticle fate in aquatic systems. Consideration of the comparisons between these two classes of carbonbased nanoparticles provides useful insights into some major current knowledge gaps while also revealing clues about needed future developments. Key issues to be resolved relate to the nature of near-range surface forces and the origins of surface charge, particularly for the reportedly unmodified or 'pure' carbon-based nanoparticles.

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Section: Measurements Of Aggregation and Deposition Kineticsmentioning

confidence: 99%

Assessing the colloidal properties of engineered nanoparticles in water: case studies from fullerene C60 nanoparticles and carbon nanotubes

Chen¹,

Smith²,

Ball³

et al. 2010

Environ. Chem.

136

114

View full text Add to dashboard Cite

show abstract

“…Diluted solution we have prepared fresh for each series of precipitated systems. The precipitated systems are prepared using methods from Tezak et al (1951).…”

Section: Methodsmentioning

confidence: 99%

Part I: Removing of Zn(II) from Polluted Water: Determination of Precipitation Limit Of Zn(II) Ion With 2-Hydroxy-1,2,3-Propanetricarboxylic Acid

Faiku¹

2010

American Journal of Environmental Sciences

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Problem statement: The goal of this research was to investigate the condition for removing of Zn cation from water, through precipitation method with 2-hydroxy-1,2,3-propanetricarboxylic acid as ligand. Approach: In this study we examined the precipitation of Zn(II) ion in water solutions of ZnSO₄ × 7H₂O (1×10^-2 and 5×10^-3 mol L^-1) with 2-hydroxy-1,2,3-propanetricarboxylic acid (1×10^-1-1×10^-3 mol L^-1) in constant ionic strength of 0.6 mol L^-1 NaCl. We have determined the concentration region at which Zn(II) start to precipitate. Results: From precipitation diagrams of zinc with 2-hydroxy-1,2,3-propanetricarboxylic acid, in ionic force 0.6 mol L^-1 NaCl, we have found that during decreasing the concentration of 2-hydroxy-1,2,3-propanetricarboxylic acid, in case of constant concentration of Zn(II), the limit of precipitation is shifted to lower values of pH. The solid phase is analyzed by IR spectroscopy. Conclusion: From the IR spectroscopic analysis we can conclude that Zn(II) ion can precipitate with 2-hydroxy-1,2,3-propanetricarboxylic acid

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“…Diluted solution we have prepared fresh for each series of precipitated systems. The precipitated systems are prepared using methods from Tezhak and collaborators [6] . Precipitated system ZnSO 4 .7H 2 O with (2S)-2-aminobutanedioic acid is investigated in the long region of concentration with ionic force of NaCl 0.6 mol L −1 .…”

Section: Methodsmentioning

confidence: 99%

Determination of Precipitation Limit of Zn(II) Ion with (2S)-2-Aminobutanedioic Acid

Faiku¹,

Faiku²,

Haziri³

et al. 2009

American J. of Biochemistry and Biotechnology

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Coagulation of Hydrophobic Sols in Statu Nascendi. I. Determination of Coagulation Values.

Cited by 66 publications

References 8 publications

Assessing the colloidal properties of engineered nanoparticles in water: case studies from fullerene C60 nanoparticles and carbon nanotubes

Assessing the colloidal properties of engineered nanoparticles in water: case studies from fullerene C60 nanoparticles and carbon nanotubes

Part I: Removing of Zn(II) from Polluted Water: Determination of Precipitation Limit Of Zn(II) Ion With 2-Hydroxy-1,2,3-Propanetricarboxylic Acid

Determination of Precipitation Limit of Zn(II) Ion with (2S)-2-Aminobutanedioic Acid

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