Journal Article10.1021/LA062072V
Aggregation and deposition kinetics of fullerene (C60) nanoparticles.
Kai Loon Chen,Menachem Elimelech +1 more
697
TL;DR: The deposition of the fullerene nanoparticles was further shown to be mostly irreversible, with immediate detachment of the nanoparticles observed only when exposed to a solution of high pH, as was indicated in the aggregation kinetics results.
read more
Abstract: The aggregation and deposition kinetics of fullerene C60 nanoparticles have been investigated over a wide range of monovalent and divalent electrolyte concentrations by employing time-resolved dynamic light scattering (DLS) and quartz crystal microbalance (QCM), respectively. Aggregation kinetics of the fullerene nanoparticles exhibited reaction-limited (slow) and diffusion-limited (fast) regimes in the presence of both electrolytes, having critical coagulation concentrations (CCC) of 120 and 4.8 mM for the monovalent (NaCl) and divalent (CaCl2) salts, respectively. The measured stability ratios of the aggregating fullerene nanoparticles were in very good agreement with Derjaguin−Landau−Verwey−Overbeek (DLVO) theory, with a derived Hamaker constant of 6.7 × 10-21 J for the fullerene nanoparticles in aqueous medium. For the deposition kinetics studies, the rate of fullerene nanoparticle deposition increased with increasing electrolyte concentrations, as was indicated in the aggregation kinetics results. Ho...
read more
Chat with Paper
AI Agents for this Paper
Find similar papers on Google Scholar, PubMed and Arxiv
Write a critical review of this paper
Analyze citations of this paper to find unaddressed research gaps
Citations
Antibacterial Activity of Graphite, Graphite Oxide, Graphene Oxide, and Reduced Graphene Oxide: Membrane and Oxidative Stress
Shaobin Liu,Tingying Helen Zeng,Mario Hofmann,Ehdi Burcombe,Jun Wei,Rongrong Jiang,Jing Kong,Yuan Chen +7 more
TL;DR: In this paper, the antibacterial activity of four types of graphene-based materials (graphite (Gt), graphite oxide (GtoO), reduced graphene oxide (rGO), and reduced GtO) toward a bacterial model (Escherichia coli) was investigated.
2.7K
Environmental applications of carbon-based nanomaterials.
TL;DR: This review critically assesses the contributions of carbon-based nanomaterials to a broad range of environmental applications: sorbents, high-flux membranes, depth filters, antimicrobial agents, environmental sensors, renewable energy technologies, and pollution prevention strategies.
1.5K
Stability and Aggregation of Metal Oxide Nanoparticles in Natural Aqueous Matrices
Arturo A. Keller,Hongtao Wang,Dongxu Zhou,Hunter S. Lenihan,Gary N. Cherr,Bradley J. Cardinale,Robert J. Miller,Zhaoxia Ji +7 more
TL;DR: The electrophoretic mobility of the particles in a given aqueous media was dominated by the presence of natural organic matter (NOM) and ionic strength, and independent of pH.
1.2K
Impact of Environmental Conditions (pH, Ionic Strength, and Electrolyte Type) on the Surface Charge and Aggregation of Silver Nanoparticles Suspensions
Amro El Badawy,Todd P. Luxton,Rendahandi G. Silva,Kirk G. Scheckel,Makram T. Suidan,Thabet Tolaymat +5 more
TL;DR: The impact of capping agents and environmental conditions (pH, ionic strength, and background electrolytes) on surface charge and aggregation potential of silver nanoparticles (AgNPs) suspensions were investigated.
1.1K
Aggregation and deposition of engineered nanomaterials in aquatic environments: role of physicochemical interactions.
TL;DR: In this review, colloidal forces governing nanoparticle deposition and aggregation are outlined, and 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.
References
Helical microtubules of graphitic carbon
TL;DR: Iijima et al. as mentioned in this paper reported the preparation of a new type of finite carbon structure consisting of needle-like tubes, which were produced using an arc-discharge evaporation method similar to that used for fullerene synthesis.
43.1K
C 60 : Buckminsterfullerene
Harold W. Kroto,Harold W. Kroto,James R. Heath,Sean C. O'Brien,Robert F. Curl,Richard E. Smalley +5 more
TL;DR: In this article, the authors proposed a truncated icosahedron, a polygon with 60 vertices and 32 faces, 12 of which are pentagonal and 20 hexagonal.
15.2K
Verwendung von Schwingquarzen zur Wägung dünner Schichten und zur Mikrowägung
TL;DR: In this paper, eigenfrequenz der Platte infolge Vergroserung der schwingenden Masse is vermessen, so das eine empirische Eichung bei der Schichtwagung mit Schwingquarzen entfallt.
9.1K
Use of quartz vibration for weighing thin films on a microbalance
G. Sauerbrey,F. Sauerbrey +1 more
- 01 Jan 1959
7.1K
The potential environmental impact of engineered nanomaterials
TL;DR: With the increased presence of nanomaterials in commercial products, a growing public debate is emerging on whether the environmental and social costs of nanotechnology outweigh its many benefits.
2.2K