Challenges Facing the Environmental Nanotechnology Research Enterprise

Louie, Stacey M.; Dale, Amy L.; Casman, Elizabeth A.; Lowry, Gregory V.

doi:10.1002/9781119275855.ch1

Cited by 3 publications

(1 citation statement)

References 118 publications

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“…Increasing deployment of nanomaterials in consumer products and commercial processes raises concerns that engineered nanomaterials released into the environment may interact adversely with organisms. − However, understanding the impact of nanomaterials on organisms at a mechanistic level is difficult and requires a systematic approach using complementary analytical tools. − Prior studies have indicated a number of different possible modes of interaction occurring at the nano-bio interface, including endocytic uptake, , passive diffusion, membrane permeabilization, , lipid extraction, and indirect interactions such as reactive oxygen species (ROS) generation or ion dissolution . The potential interactions between nanoparticles and cell surfaces are complex, may occur through a number of different mechanisms, and ultimately depend on the type of nanomaterial and cell surface structure.…”

Section: Introductionmentioning

confidence: 99%

Quaternary Amine-Terminated Quantum Dots Induce Structural Changes to Supported Lipid Bilayers

et al. 2018

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The cytoplasmic membrane represents an essential barrier between the cytoplasm and the environment external to cells. Interaction with nanomaterials can alter the integrity of the cytoplasmic membrane through the formation of holes and membrane thinning, which can ultimately lead to adverse biological impacts. Here we use supported lipid bilayers as experimental models for the cytoplasmic membrane to investigate the impact of quantum dots functionalized with the cationic polymer poly(diallyldimethylammonium chloride) (PDDA) on membrane structure. Using a quartz crystal microbalance with dissipation monitoring we show that the positively charged quantum dots attach to and induce structural rearrangement to zwitterionic bilayers in solely the liquid-disordered phase and in those containing phase-segregated liquid-ordered domains. Real-time atomic force microscopy imaging revealed that PDDA-coated quantum dots and, to a lesser extent, PDDA itself induced the disappearance of liquid-ordered domains. We hypothesize this effect is due to an increase in energy per unit area caused by collisions between PDDA-coated quantum dots at the membrane surface. This increase in free energy per area exceeds the approximate free-energy change associated with membrane mixing between the liquid-ordered and liquid-disordered phases and results in the destabilization of membrane domains.

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Section: Introductionmentioning

confidence: 99%

Quaternary Amine-Terminated Quantum Dots Induce Structural Changes to Supported Lipid Bilayers

et al. 2018

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Environmental Nanotechnology: Its Applications, Effects and Management

Jasrotia

Chaudhary

Srinivasan

et al. 2021

New Frontiers of Nanomaterials in Environmental Science

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Waste Management Using Nanotechnology

Elwaheidi

2023

Handbook of Research on Safe Disposal Methods of Municipal Solid Wastes for a Sustainable Environment

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Waste management represents a challenge due to the rapid increase in waste production and the emergence of new waste types. Overcoming the issue involves using innovative technologies such as nanotechnology. Nanotechnology uses nanomaterials, which are materials that have at least one dimension less than 100 nm. Due to their small size, these materials increase reactivity in processes such as adsorption and oxidation/reduction. The application of nanotechnologies is significant in the production of new materials to replace current raw materials, and in providing novel solutions for waste recycling and disposal. Furthermore, nanofiltration is effective in the treatment of metals, toxic waste, and nonbiodegradable materials of leachate. Nanomaterials, however, represent a safety risk for the environment, and a serious threat to human health due to their small size and long suspension time. This chapter deals with the use of nanotechnology in waste management, including reduction, recycling, treatment, and disposal phases.

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Challenges Facing the Environmental Nanotechnology Research Enterprise

Cited by 3 publications

References 118 publications

Quaternary Amine-Terminated Quantum Dots Induce Structural Changes to Supported Lipid Bilayers

Quaternary Amine-Terminated Quantum Dots Induce Structural Changes to Supported Lipid Bilayers

Environmental Nanotechnology: Its Applications, Effects and Management

Waste Management Using Nanotechnology

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