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Native Cell Membrane Nanoparticles System for Membrane Protein-Protein Interaction Analysis

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Published on: July 16, 2020

Functionalized nanoparticle interactions with polymeric membranes.

D A Ladner¹, M Steele, A Weir

¹Clemson University, Department of Environmental Engineering and Earth Sciences, Clemson, South Carolina, USA. ladner@clemson.edu

Journal of Hazardous Materials

|December 20, 2011

Summary

This summary is machine-generated.

Functionalized nanoparticles (NPs) retention on membranes was studied. Positively charged NPs showed >99% rejection by negatively charged membranes due to sorption, impacting water treatment technologies.

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Area of Science:

Environmental Science
Materials Science
Chemical Engineering

Background:

Membrane technology is crucial for water and wastewater treatment.
Understanding nanoparticle (NP) behavior on membranes is vital for effective water purification and NP detection.
Functionalized NPs offer potential applications in waste treatment but require careful management.

Purpose of the Study:

To measure the retention of functionalized nanoparticles (NPs) on various porous membranes.
To investigate the influence of NP surface charge, core material, and membrane properties on NP rejection.
To categorize NP-membrane interaction behaviors for improved process design.

Main Methods:

Experiments using functionalized silver, titanium dioxide, and gold NPs (2-10nm) with varying surface charges.
Application of NP solutions to polymeric membranes with diverse materials and pore sizes (0.2 microm to 3 kDa MWCO).
Analysis of NP rejection rates and identification of interaction mechanisms (e.g., sorption).

Main Results:

Positively charged NPs exhibited >99% rejection by negatively charged membranes, primarily due to sorption, even with large pore sizes.
Negatively charged NP rejection was less efficient and depended on both NP core material and surface functionality.
NP properties (charge, core material) were more influential on rejection than membrane properties.

Conclusions:

NP-membrane interactions are complex, influenced by electrostatic interactions and material properties.
Four distinct categories of NP-membrane interaction behavior were identified and described.
Findings inform the design of advanced water treatment systems and analytical methods for NP detection.