آخرین محصولات
(PDF) Core–Shell and Asymmetric Polystyrene–Gold Composite Particles
Core−shell structured polystyrene−gold composite particles are synthesized from one-step Pickering emulsion polymerization. The surface coverage of the core−shell composite particles is improved with increasing gold nanoparticle (AuNP) hydrophobicity
Polymer-Stabilized Gold Nanoparticles and Their …
Synthesis of Gold Nanoparticles Coated with Polystyrene-block-poly(N-isopropylacrylamide) and Their Thermoresponsive Ultraviolet−Visible Absorbance. Industrial & Engineering Chemistry Research 2010, 49 (6), …
Preparation and properties of polystyrene incorporated …
Here, we report the first study on preparation and characterization of PS:MO/Si heterojunction photo detectors based on incorporating the polystyrene with gold and silver nanoparticles prepared by laser ablation in liquid.
Self-Assembly of Gold Nanoparticles and Polystyrene: A …
Colloidal particles with polystyrene (PS) cores and gold nanoparticle (AuNP) coronae were prepared on the basis of the self-assembly of AuNP's and PS. Citrate-stabilized AuNP's were dispersed in aqueous solution, and PS with thiol terminal groups (PS-SH) was dissolved in toluene.
Coal–oil assisted flotation for the gold recovery
The coal–oil–gold agglomeration process consists of two separate parts: production of coal–oil– gold agglomerates and recovery of these agglomerates from pulp. Flotation of the agglomerates or screening can be employed for the recovery stage (House et al., 1988). The recovery of gold by CGA process depends on many factors: Degree of ...
Auto-deposition of gold on chemically modified polystyrene …
The modified polystyrene beads act as the reducing agent for Au 3+ and also serve as a template for the deposition of gold films and hexagonal/triangular shaped gold particles. The electroless deposition process was followed by UV-reflectance spectroscopy, FE-SEM, X-ray diffraction and AFM.
First Step in Making Nanoplastics Tests Visible to the Naked …
Study: A colorimetric detection of polystyrene nanoplastics with gold nanoparticles in the aqueous phase.Image Credit: Daniel Fung/Shutterstock. A pre-proof paper submitted to Science of The Total Environment addresses this issue by proposing a colorimetry-based detection technique using gold nanoparticles (AuNPs) for monitoring polystyrene nanoplastics …
Facile synthesis of gold nanoparticle-coated polystyrene …
Herein we develop a facile and controllable strategy for the preparation of composite particles composed of polystyrene (PS) microspheres decorated with gold nanoparticles (AuNPs) through Pickering emulsion template.
Polymer-Stabilized Gold Nanoparticles and Their …
Synthesis of Gold Nanoparticles Coated with Polystyrene-block-poly(N-isopropylacrylamide) and Their Thermoresponsive Ultraviolet−Visible Absorbance. Industrial & Engineering Chemistry Research 2010, 49 (6), 2707-2715.
Colloidal alchemy: Conversion of polystyrene …
In this paper we demonstrate an alternative approach to these self-assembly routes. Instead of aggregating particles together, we create colloidal templates with high yield and well-controlled morphology, and then perform the in situ synthesis of gold satellites.
Sulfonated Polystyrene Nanoparticles as Oleic Acid …
To obtain particles smaller than 100 nm and also to prevent nanoparticle agglomeration, sulfonated styrene was employed as a monomer in the present work to obtain partially sulfonated polystyrene nanoparticles (SPSNP). ... Since OADA was used in this work as a surfactant for both polystyrene polymerization and enhanced oil recovery processes ...
CNTs reinforced super-hydrophobic-oleophilic …
1 CNTs reinforced super-hydrophobic-oleophilic electrospun polystyrene oil sorbent for enhanced sorption capacity and reusability Jingya Wu1, Alicia Kyoungjin An1*, Jiaxin Guo1, Eui-Jong Lee1, Muhammad Usman Farid1, Sanghyun Jeong2 1 School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue Kowloon, Hong Kong, China
Enhanced flotation of refractory gold ore by using sulfur-oil
Fundamental concepts of gold flotation were considered, including the sulfur-oil-gold agglomeration mechanisms and the role of (NH 4) 2 S 2 O 3.The possible mechanism had been put forward: (1) nature of (NH 4) 2 S 2 O 3 is complex, it renders the oxidized gold surface cleaned, the exposed fresh surface shows strong natural oleophilicity; (2) in weak acidic pulp, …
Self-Assembly of Gold Nanoparticles and Polystyrene: A …
Colloidal particles with polystyrene (PS) cores and gold nanoparticle (AuNP) coronae were prepared on the basis of the self-assembly of AuNP's and PS. Citrate-stabilized …
Photothermal self-healing of gold nanoparticle–polystyrene hybrids
This study focused on the processing and photothermal healing of gold nanoparticle (Au NP) and polystyrene (PS) hybrid films. Effects of Au NP contents were investigated using hybrid films with the NP content from 0 to 1 wt% via a solvent-assisted approach.
(PDF) Core–Shell and Asymmetric Polystyrene–Gold …
Core−shell structured polystyrene−gold composite particles are synthesized from one-step Pickering emulsion polymerization. The surface coverage of the core−shell composite particles …
Preparation and properties of polystyrene incorporated …
around 50 and 70 nm, respectively. Agglomeration and aggregation of gold NPs and Ag NPs have been observed (denoted by arrows). This agglomeration can be arising from the heating induced by high laser fluence which in turn affects the surface chemistry of the Au and Ag NPs and plays an important role in dynamic procedure of agglomeration
Auto-deposition of gold on chemically modified polystyrene …
The modified polystyrene beads act as the reducing agent for Au 3+ and also serve as a template for the deposition of gold films and hexagonal/triangular shaped gold particles. …
Photothermal self-healing of gold nanoparticle-polystyrene …
This study focused on the processing and photothermal healing of gold nanoparticle (Au NP) and polystyrene (PS) hybrid films. Effects of Au NP contents were investigated using hybrid films with ...
Preparation and properties of polystyrene incorporated with gold …
Agglomeration and aggregation of gold NPs and Ag NPs have been observed (denoted by arrows). This agglomeration can be arising from the heating induced by high laser fluence which in turn affects the surface chemistry of the Au and Ag NPs and plays an important role in dynamic procedure of agglomeration (Zhang and Gu 2006).
(PDF) Core–Shell and Asymmetric Polystyrene–Gold Composite Particles
Core−shell structured polystyrene−gold composite particles are synthesized from one-step Pickering emulsion polymerization. The surface coverage of the core−shell composite particles is improved with increasing gold nanoparticle (AuNP) hydrophobicity and concentration.
Preparation and photothermal study of polystyrene coated …
Polystyrene coated with gold nanoshell composite particles, with good photothermal properties, were prepared by electrostatic self-assembly.
Photothermal self-healing of gold nanoparticle …
Photothermal self-healing of gold nanoparticle-polystyrene hybrids Journal: Nanoscale Manuscript ID NR-ART-07-2020-005621.R1 Article Type: Paper Date Submitted by the Author: ... size, shape, agglomeration state, and composition. The healing parameters related to the incident light are intensity, wavelength, pulse duration, ...
Visual monitoring of polystyrene nanoplastics
Nanoplastics (NPLs), of which polystyrene (PS) plastics are typical representatives, are of global concern as emerging contaminants, especially the leakage of NPLs into drinking water, which is directly related to human health.To onsite visually assess the extent of NPLs contamination in drinking water in a rapid and non-destructive manner, this work extends the …
Oral absorption of PEG-coated versus uncoated gold …
Methods. In the study reported here, snapshots of agglomeration behavior of gold nanospheres were evaluated in vivo throughout the gastrointestinal tract using transmission electron microscopy. Agglomeration state within the gastrointestinal tract was then used to help explain differences in gastrointestinal particle absorption, as indicated by tissue levels of gold …
Photothermal self-healing of gold nanoparticle …
agglomeration degrading the healing properties. The developed hybrid films can be used in functional devices and coatings with high flexibility and healed using photon energy sources.
Preparation and properties of polystyrene incorporated …
Here, we report the first study on preparation and characterization of PS:MO/Si heterojunction photo detectors based on incorporating the polystyrene with gold and silver nanoparticles …
Photothermal self-healing of gold …
This study focused on the processing and photothermal healing of gold nanoparticle (Au NP) and polystyrene (PS) hybrid films. Effects of Au NP contents were investigated using hybrid films with the NP content from 0 to 1 wt% via a …
Polystyrene microcapsules containing linseed oil and SiC …
The absence of agglomeration and connections between the microcapsules is apparent. Also, air trapping in the microcapsules and free oil was not observed. ... Linseed-oil-filled polystyrene microcapsules were prepared using the solvent evaporation method. For excellent adhesion to the epoxy, the microcapsules with a spherical shape and rough ...
Preparation and photothermal study of polystyrene coated with gold
Polystyrene coated with gold nanoshell composite particles, with good photothermal properties, were prepared by electrostatic self-assembly.
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