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Liu YN, Liu XW. Nanoscale Spatiotemporal Dynamics of Microbial Adhesion: Unveiling Stepwise Transitions with Plasmonic Imaging. ACS NANO 2024; 18:16002-16010. [PMID: 38837910 DOI: 10.1021/acsnano.4c04354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
Understanding bacterial adhesion at the nanoscale is crucial for elucidating biofilm formation, enhancing biosensor performance, and designing advanced biomaterials. However, the dynamics of the critical transition from reversible to irreversible adhesion has remained elusive due to analytical constraints. Here, we probed this adhesion transition, unveiling nanoscale, step-like bacterial approaches to substrates using a plasmonic imaging technique. This method reveals the discontinuous nature of adhesion, emphasizing the complex interplay between bacterial extracellular polymeric substances (EPS) and substrates. Our findings not only deepen our understanding of bacterial adhesion but also have significant implications for the development of theoretical models for biofilm management. By elucidating these nanoscale step-like adhesion processes, our work provides avenues for the application of nanotechnology in biosensing, biofilm control, and the creation of biomimetic materials.
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Affiliation(s)
- Yi-Nan Liu
- Hefei National Laboratory for Physical Sciences at the Microscale, Chinese Academy of Sciences Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
| | - Xian-Wei Liu
- Hefei National Laboratory for Physical Sciences at the Microscale, Chinese Academy of Sciences Key Laboratory of Urban Pollutant Conversion, Department of Environmental Science and Engineering, University of Science and Technology of China, Hefei 230026, China
- Department of Applied Chemistry, University of Science and Technology of China, Hefei 230026, China
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2
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Rowles LS, Tso D, Dolocan A, Kirisits MJ, Lawler DF, Saleh NB. Integrating Navajo Pottery Techniques To Improve Silver Nanoparticle-Enabled Ceramic Water Filters for Disinfection. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:17132-17143. [PMID: 37870911 DOI: 10.1021/acs.est.3c03462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2023]
Abstract
Point-of-use treatment technologies can increase access to safe drinking water in rural areas. Sustained use of these technologies is uncommon due to oversight of community needs, user-perceived risks, long-term maintenance, and conflict with traditional practices. Nanosilver-enabled ceramic water filters are unique due to the use of locally sourced materials available at or near the target community; however, technical limitations persist (e.g., nanosilver's uncontrolled release and passivation from sulfide or chloride). This work aims to overcome these limitations by impregnating nanosilver onto ceramics with a Navajo pottery rosin, collected from pinyon trees with a third-generation artisan. Here, we investigate this sustainable and novel material for drinking water treatment; the study ranges from a proof of concept to testing under realistic conditions. Results show that when embedded in a thin film, the biopolymer controlled ionic silver dissolution and prevented silver passivation from sulfide and chloride. When applied to ceramic filters, the biopolymer effectively immobilized nanosilver in a range of waters. Over a 25 day study to emulate household-use conditions, this coating method sustained disinfection of a coculture of Gram-positive and Gram-negative bacteria while controlling biofouling. Overall, the use of this Navajo pottery material can facilitate adoption while providing the needed technological advancement to these widely used treatment devices.
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Affiliation(s)
- Lewis S Rowles
- Fariborz Maseeh Department of Civil, Architectural and Environmental Engineering, University of Texas, Austin, Texas 78712, United States
| | - Deanna Tso
- Navajo Nation, Tuba City Chapter, Tuba, Arizona 86045, United States
| | - Andrei Dolocan
- Texas Materials Institute, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Mary Jo Kirisits
- Fariborz Maseeh Department of Civil, Architectural and Environmental Engineering, University of Texas, Austin, Texas 78712, United States
| | - Desmond F Lawler
- Fariborz Maseeh Department of Civil, Architectural and Environmental Engineering, University of Texas, Austin, Texas 78712, United States
| | - Navid B Saleh
- Fariborz Maseeh Department of Civil, Architectural and Environmental Engineering, University of Texas, Austin, Texas 78712, United States
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3
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Choice of DLVO approximation method for quantifying the affinity between latex particles and membranes. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.121121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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4
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S DS, Vishwakarma V. Recovery and recycle of wastewater contaminated with heavy metals using adsorbents incorporated from waste resources and nanomaterials-A review. CHEMOSPHERE 2021; 273:129677. [PMID: 33503526 DOI: 10.1016/j.chemosphere.2021.129677] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2020] [Revised: 12/18/2020] [Accepted: 01/15/2021] [Indexed: 06/12/2023]
Abstract
Recovery and recycle of wastewater are essential because of the need of huge quantities of water everywhere in this world. Presence of heavy metals in wastewater such as iron (Fe), molybdenum (Mo), manganese (Mn), zinc (Zn), nickel (Ni), copper (Cu), vanadium (V), cobalt (Co), tungsten (W), chromium (Cr), arsenic (As), silver (Ag), antimony (Sb), cadmium (Cd), mercury (Hg), lead (Pd), uranium (U), etc is the serious environmental issues and risk for human and animal health. Adsorbents are simple and low-cost methods to treat the pollutants and heavy metals of wastewater. The adsorbents are capable to treat the wastewater prepared from different wastes such as domestic, agricultural, industrial, animal and marine waste etc. In recent years, novel nanomaterials are also used as adsorbents which enhance the treatment efficiency of wastewater. Adsorption is a mass transfer phenomenon revolving shift of elements from a fluid to a solid phase based on the concentration gradient. The mechanism which helps in separation of contaminants from the effluent and the factors governing the efficiency of adsorption are discussed elaborately.
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Affiliation(s)
- Dawn S S
- Centre for Waste Management, Sathyabama Institute of Science and Technology, Chennai, 600119, India; Centre of Excellence for Energy Research, Sathyabama Institute of Science and Technology, Chennai, 600119, India
| | - Vinita Vishwakarma
- Centre for Nanoscience and Nanotechnology, Sathyabama Institute of Science and Technology, Chennai, 600119, India.
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5
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Yelemane V, Kangwa M, Dsouza RN, Fernández-Lahore M. Surface energetics to assess influence of biomass-type and biomass-adsorbent interactions in expanded beds. BIORESOUR BIOPROCESS 2021; 8:29. [PMID: 38650215 PMCID: PMC10991939 DOI: 10.1186/s40643-021-00382-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2020] [Accepted: 04/09/2021] [Indexed: 11/10/2022] Open
Abstract
In integrated bioprocessing applications, expanded bed adsorption (EBA) chromatography presents an opportunity to harvest biomolecules directly from the crude feedstock. However, unfavorable biomass interactions with adsorbent usually leads to fouling, which reduces its protein binding capacity as it alters column hydrodynamics and binding site availability. In this work, a detailed study on biomass adhesion behavior of four different industrially relevant microorganisms on 26 different, most commonly occurring adsorbent surfaces with varying degrees of surface energy and surface charge has been conducted. The results showed the derivation of a relative "stickiness" factor for every microorganism, which further classifies each organism based on their general degree of adhesion to surfaces with respect to one another. The obtained results can help to better understand the effect of biomass homogenization on biomass-adsorbent interactions in EBA. The data of surface energy and charge for the surfaces investigated in this work can be used to calculate the stickiness factor of other microorganisms of interest and may assist in the development of novel adsorbent materials for EBA chromatography.
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Affiliation(s)
- Vikas Yelemane
- Downstream Bioprocessing Laboratory, School of Engineering and Science, Jacobs University, Campus Ring 1, 28759, Bremen, Germany
| | - Martin Kangwa
- Downstream Bioprocessing Laboratory, School of Engineering and Science, Jacobs University, Campus Ring 1, 28759, Bremen, Germany
| | - Roy N Dsouza
- Downstream Bioprocessing Laboratory, School of Engineering and Science, Jacobs University, Campus Ring 1, 28759, Bremen, Germany
| | - Marcelo Fernández-Lahore
- Downstream Bioprocessing Laboratory, School of Engineering and Science, Jacobs University, Campus Ring 1, 28759, Bremen, Germany.
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6
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Taylor Z, Marucho M. The Self-Adaptation Ability of Zinc Oxide Nanoparticles Enables Reliable Cancer Treatments. NANOMATERIALS (BASEL, SWITZERLAND) 2020; 10:E269. [PMID: 32033506 PMCID: PMC7075113 DOI: 10.3390/nano10020269] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 01/21/2020] [Accepted: 02/03/2020] [Indexed: 11/26/2022]
Abstract
Optimal procedures for reliable anti-cancer treatments involve the systematic delivery of zinc oxide nanoparticles, which spread through the circulatory system. The success of these procedures may largely depend on the NPs' ability of self-adapting their physicochemical properties to overcome the different challenges facing at each stage on its way to the interior of a cancerous cell. In this article, we combine a multiscale approach, a unique nanoparticle model, and available experimental data to characterize the behavior of zinc oxide nanoparticles under different vessels rheology, pH levels, and biological environments. We investigate their ability to prevent aggregation, allow prolonged circulation time in the bloodstream, avoid clearance, conduct themselves through the capillarity system to reach damaged tissues, and selectively approach to target cancerous cells. Our results show that non-functionalized spherical zinc oxide nanoparticles with surface density N = 5.89 × 10-6 mol/m2, protonation and deprotonation rates pKa = 10.9 and pKb = -5.5, and NP size in the range of 20-50 nm are the most effective, smart anti-cancer agents for biomedical treatments.
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Affiliation(s)
- Zane Taylor
- Department of Applied Physics and Materials Science, California Institute of Technology, Pasadena, CA 91125, USA;
- Department of Physics and Astronomy, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA
| | - Marcelo Marucho
- Department of Physics and Astronomy, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA
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8
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9
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Salis B, Pugliese G, Pellegrino T, Diaspro A, Dante S. Polymer Coating and Lipid Phases Regulate Semiconductor Nanorods' Interaction with Neuronal Membranes: A Modeling Approach. ACS Chem Neurosci 2019; 10:618-627. [PMID: 30339349 DOI: 10.1021/acschemneuro.8b00466] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The interplay between nanoparticles (NPs) and cell membranes is extremely important with regard to using NPs in biology applications. With the aim of unraveling the dominating factors on the molecular scale, we have studied the interaction between polymer-coated semiconductor nanorods (NRs) made of cadmium selenium/cadmium sulfur and model lipid membranes. The zeta potential (ζ) of the NRs was tuned from having a negative value (-24 mV) to having a positive one (+11 mV) by changing the amine content in the polymer coating. Supported lipid bilayers (SLBs) and lipid monolayers (LMs) were used as model membranes. Lipid mixtures containing anionic or cationic lipids were employed in order to change the membrane ζ from -77 to +49 mV; lipids with saturated hydrophobic chains were used to create phase-separated gel domains. NR adsorption to the SLBs was monitored by quartz crystal microbalance with dissipation monitoring; interactions with LMs with the same lipid composition were measured by surface pressure-area isotherms. The results showed that the NRs only interact with the model membrane if the mutual Δζ is higher than 70 mV; at the air-water interface, positively charged NRs remove lipids from the anionic lipid mixtures, and the negative ones penetrate the space between the polar heads in the cationic mixtures. However, the presence of gel domains in the membrane inhibits this interaction. The results of the Derjaguin-Landau-Verwey-Overbeek model frame indicate that the interaction occurs not only due to electrostatic and van der Waals forces, but also due to steric and/or hydration forces.
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Affiliation(s)
- Barbara Salis
- Dipartimento di Informatica, Bioingegneria, Robotica e Ingegneria dei Sistemi, Università di Genova, Genova 16145, Italy
- Nanoscopy&NIC@IIT, Istituto Italiano di Tecnologia, Genova 16163, Italy
| | - Giammarino Pugliese
- Nanomaterials for Biomedical Applications, Istituto Italiano di Tecnologia, Genova 16146, Italy
| | - Teresa Pellegrino
- Nanomaterials for Biomedical Applications, Istituto Italiano di Tecnologia, Genova 16146, Italy
| | - Alberto Diaspro
- Nanoscopy&NIC@IIT, Istituto Italiano di Tecnologia, Genova 16163, Italy
- Dipartimento di Fisica, Università di Genova, Genova 16163, Italy
| | - Silvia Dante
- Nanoscopy&NIC@IIT, Istituto Italiano di Tecnologia, Genova 16163, Italy
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10
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Giron RP, Chen X, La Plante EC, Gussev MN, Leonard KJ, Sant G. Revealing How Alkali Cations Affect the Surface Reactivity of Stainless Steel in Alkaline Aqueous Environments. ACS OMEGA 2018; 3:14680-14688. [PMID: 31458146 PMCID: PMC6644133 DOI: 10.1021/acsomega.8b02227] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 10/22/2018] [Indexed: 06/10/2023]
Abstract
Stainless steel is a ubiquitous structural material and one that finds extensive use in core-internal components in nuclear power plants. Stainless steel features superior corrosion resistance (e.g., as compared to ordinary steel) due to the formation of passivating iron and/or chromium oxides on its surfaces. However, the breakdown of such passivating oxide films, e.g., due to localized deformation and slip line formation following exposure to radiation, or aggressive ions renders stainless steel susceptible to corrosion-related degradation. Herein, the effects of alkali cations (i.e., K+, Li+) and the interactions between the passivated steel surface and the solution are examined using 304L stainless steel. Scanning electrochemical microscopy and atomic force microscopy are used to examine the inert-to-reactive transition of the steel surface both in the native state and in the presence of applied potentials. Careful analysis of interaction forces, in solution, within ≤10 nm of the steel surface, reveals that the interaction between the hydrated alkali cations and the substrate affects the structure of the electrical double layer (EDL). As a result, a higher surface reactivity is indicated in the presence of Li+ relative to K+ due to the effects of the former species in disrupting the EDL. These findings provide new insights into the role of the water chemistry not only on affecting metallic corrosion but also in other applications, such as batteries and electrochemical devices.
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Affiliation(s)
- Rachel
Guia P. Giron
- Laboratory
for the Chemistry of Construction Materials (LC), Department
of Civil and Environmental Engineering, University of California, Los Angeles, 420 Westwood Plaza, Los
Angeles, California 90095, United States
| | - Xin Chen
- Laboratory
for the Chemistry of Construction Materials (LC), Department
of Civil and Environmental Engineering, University of California, Los Angeles, 420 Westwood Plaza, Los
Angeles, California 90095, United States
| | - Erika Callagon La Plante
- Laboratory
for the Chemistry of Construction Materials (LC), Department
of Civil and Environmental Engineering, University of California, Los Angeles, 420 Westwood Plaza, Los
Angeles, California 90095, United States
| | - Maxim N. Gussev
- Materials
Science and Technology Division, Oak Ridge
National Laboratory, 1 Bethel Valley Road, Oak Ridge, Tennessee 37831, United States
| | - Keith J. Leonard
- Materials
Science and Technology Division, Oak Ridge
National Laboratory, 1 Bethel Valley Road, Oak Ridge, Tennessee 37831, United States
| | - Gaurav Sant
- Laboratory
for the Chemistry of Construction Materials (LC), Department
of Civil and Environmental Engineering, University of California, Los Angeles, 420 Westwood Plaza, Los
Angeles, California 90095, United States
- Department
of Materials Science and Engineering, University
of California, Los Angeles, 410 Westwood Plaza, Los
Angeles, California 90095, United States
- California
NanoSystems Institute, University of California,
Los Angeles, 570 Westwood Plaza, Los Angeles, California 90095, United States
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11
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Giron RGP, Chen X, La Plante EC, Gussev MN, Leonard KJ, Sant G. Revealing How Alkali Cations Affect the Surface Reactivity of Stainless Steel in Alkaline Aqueous Environments. ACS OMEGA 2018; 3:14680-14688. [PMID: 31458146 DOI: 10.1021/acsomega.8b02227/asset/images/acsomega.8b02227.social.jpeg_v03] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 10/22/2018] [Indexed: 05/20/2023]
Abstract
Stainless steel is a ubiquitous structural material and one that finds extensive use in core-internal components in nuclear power plants. Stainless steel features superior corrosion resistance (e.g., as compared to ordinary steel) due to the formation of passivating iron and/or chromium oxides on its surfaces. However, the breakdown of such passivating oxide films, e.g., due to localized deformation and slip line formation following exposure to radiation, or aggressive ions renders stainless steel susceptible to corrosion-related degradation. Herein, the effects of alkali cations (i.e., K+, Li+) and the interactions between the passivated steel surface and the solution are examined using 304L stainless steel. Scanning electrochemical microscopy and atomic force microscopy are used to examine the inert-to-reactive transition of the steel surface both in the native state and in the presence of applied potentials. Careful analysis of interaction forces, in solution, within ≤10 nm of the steel surface, reveals that the interaction between the hydrated alkali cations and the substrate affects the structure of the electrical double layer (EDL). As a result, a higher surface reactivity is indicated in the presence of Li+ relative to K+ due to the effects of the former species in disrupting the EDL. These findings provide new insights into the role of the water chemistry not only on affecting metallic corrosion but also in other applications, such as batteries and electrochemical devices.
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Affiliation(s)
- Rachel Guia P Giron
- Laboratory for the Chemistry of Construction Materials (LC), Department of Civil and Environmental Engineering, University of California, Los Angeles, 420 Westwood Plaza, Los Angeles, California 90095, United States
| | - Xin Chen
- Laboratory for the Chemistry of Construction Materials (LC), Department of Civil and Environmental Engineering, University of California, Los Angeles, 420 Westwood Plaza, Los Angeles, California 90095, United States
| | - Erika Callagon La Plante
- Laboratory for the Chemistry of Construction Materials (LC), Department of Civil and Environmental Engineering, University of California, Los Angeles, 420 Westwood Plaza, Los Angeles, California 90095, United States
| | - Maxim N Gussev
- Materials Science and Technology Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, Tennessee 37831, United States
| | - Keith J Leonard
- Materials Science and Technology Division, Oak Ridge National Laboratory, 1 Bethel Valley Road, Oak Ridge, Tennessee 37831, United States
| | - Gaurav Sant
- Laboratory for the Chemistry of Construction Materials (LC), Department of Civil and Environmental Engineering, University of California, Los Angeles, 420 Westwood Plaza, Los Angeles, California 90095, United States
- Department of Materials Science and Engineering, University of California, Los Angeles, 410 Westwood Plaza, Los Angeles, California 90095, United States
- California NanoSystems Institute, University of California, Los Angeles, 570 Westwood Plaza, Los Angeles, California 90095, United States
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12
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Collins L, Kilpatrick JI, Kalinin SV, Rodriguez BJ. Towards nanoscale electrical measurements in liquid by advanced KPFM techniques: a review. REPORTS ON PROGRESS IN PHYSICS. PHYSICAL SOCIETY (GREAT BRITAIN) 2018; 81:086101. [PMID: 29990308 DOI: 10.1088/1361-6633/aab560] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Fundamental mechanisms of energy storage, corrosion, sensing, and multiple biological functionalities are directly coupled to electrical processes and ionic dynamics at solid-liquid interfaces. In many cases, these processes are spatially inhomogeneous taking place at grain boundaries, step edges, point defects, ion channels, etc and possess complex time and voltage dependent dynamics. This necessitates time-resolved and real-space probing of these phenomena. In this review, we discuss the applications of force-sensitive voltage modulated scanning probe microscopy (SPM) for probing electrical phenomena at solid-liquid interfaces. We first describe the working principles behind electrostatic and Kelvin probe force microscopies (EFM & KPFM) at the gas-solid interface, review the state of the art in advanced KPFM methods and developments to (i) overcome limitations of classical KPFM, (ii) expand the information accessible from KPFM, and (iii) extend KPFM operation to liquid environments. We briefly discuss the theoretical framework of electrical double layer (EDL) forces and dynamics, the implications and breakdown of classical EDL models for highly charged interfaces or under high ion concentrations, and describe recent modifications of the classical EDL theory relevant for understanding nanoscale electrical measurements at the solid-liquid interface. We further review the latest achievements in mapping surface charge, dielectric constants, and electrodynamic and electrochemical processes in liquids. Finally, we outline the key challenges and opportunities that exist in the field of nanoscale electrical measurements in liquid as well as providing a roadmap for the future development of liquid KPFM.
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Affiliation(s)
- Liam Collins
- Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States of America. Institute for Functional Imaging of Materials, Oak Ridge National Laboratory, Oak Ridge, TN 37831, United States of America
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13
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Zuluaga S, Manchanda P, Zhang YY, Pantelides ST. Design of Optimally Stable Molecular Coatings for Fe-Based Nanoparticles in Aqueous Environments. ACS OMEGA 2017; 2:4480-4487. [PMID: 31457740 PMCID: PMC6641751 DOI: 10.1021/acsomega.7b00762] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 07/28/2017] [Indexed: 06/10/2023]
Abstract
Magnetic nanoparticles are widely used in biomedical and oil-well applications in aqueous, often harsh environments. The pursuit for high-saturation magnetization together with high stability of the molecular coating that prevents agglomeration and oxidation remains an active research area. Here, we report a detailed analysis of the criteria for the stability of molecular coatings in aqueous environments along with extensive first-principles calculations for magnetite, which has been widely used, and cementite, a promising emerging candidate. A key result is that the simple binding energies of molecules cannot be used as a definitive indicator of relative stability in a liquid environment. Instead, we find that H+ ions and water molecules facilitate the desorption of molecules from the surface. We further find that, because of differences in the geometry of crystal structures, molecules generally form stronger bonds on cementite surfaces than they do on magnetite surfaces. The net result is that molecular coatings of cementite nanoparticles are more stable. This feature, together with the better magnetic properties, makes cementite nanoparticles a promising candidate for biomedical and oil-well applications.
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Affiliation(s)
- Sebastian Zuluaga
- Department of Physics and Astronomy and Department of
Electrical Engineering
and Computer Science, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Priyanka Manchanda
- Department of Physics and Astronomy and Department of
Electrical Engineering
and Computer Science, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Yu-Yang Zhang
- Department of Physics and Astronomy and Department of
Electrical Engineering
and Computer Science, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Sokrates T. Pantelides
- Department of Physics and Astronomy and Department of
Electrical Engineering
and Computer Science, Vanderbilt University, Nashville, Tennessee 37235, United States
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14
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Mikelonis AM, Lawler DF, Passalacqua P. Multilevel modeling of retention and disinfection efficacy of silver nanoparticles on ceramic water filters. THE SCIENCE OF THE TOTAL ENVIRONMENT 2016; 566-567:368-377. [PMID: 27232964 DOI: 10.1016/j.scitotenv.2016.05.076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 05/11/2016] [Accepted: 05/12/2016] [Indexed: 06/05/2023]
Abstract
This research examined how variations in synthesis methods of silver nanoparticles affect both the release of silver from ceramic water filters (CWFs) and disinfection efficacy. The silver nanoparticles used were stabilized by four different molecules: citrate, polyvinylpyrrolidone, branched polyethylenimine, and casein. A multilevel statistical model was built to quantify if there was a significant difference in: a) extent of silver lost, b) initial amount of silver lost, c) silver lost for water of different quality, and d) total coliform removal. Experiments were performed on location at Pure Home Water, a CWF factory in Tamale, Ghana using stored rainwater and dugout water (a local surface water). The results indicated that using dugout vs. rainwater significantly affects the initial (p-value 0.0015) and sustained (p-value 0.0124) loss of silver, but that silver type does not have a significant effect. On average, dugout water removed 37.5μg/L more initial silver and had 1.1μg/L more silver in the filtrate than rainwater. Initially, filters achieved 1.9 log reduction values (LRVs) on average, but among different silver and water types this varied by as much as 2.5 LRV units. Overall, bacterial removal effectiveness was more challenging to evaluate, but some data suggest that the branched polyethylenimine silver nanoparticles provided improved initial bacterial removal over filters which were not painted with silver nanoparticles (p-value 0.038).
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Affiliation(s)
- Anne M Mikelonis
- Department of Civil, Architectural, and Environmental Engineering, The University of Texas at Austin, 301 E. Dean Keeton St., Mail Stop C1786, Austin, TX 78712-1173, USA.
| | - Desmond F Lawler
- Department of Civil, Architectural, and Environmental Engineering, The University of Texas at Austin, 301 E. Dean Keeton St., Mail Stop C1786, Austin, TX 78712-1173, USA.
| | - Paola Passalacqua
- Department of Civil, Architectural, and Environmental Engineering, The University of Texas at Austin, 301 E. Dean Keeton St., Mail Stop C1786, Austin, TX 78712-1173, USA.
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15
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Nakahashi Y, Unoura K, Nabika H. Non-DLVO Aggregation of Gold Nanoparticles Modified with Amino Acids. CHEM LETT 2016. [DOI: 10.1246/cl.160324] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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16
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Joekar-Niasar V, Mahani H. Nonmonotonic Pressure Field Induced by Ionic Diffusion in Charged Thin Films. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b00842] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Vahid Joekar-Niasar
- School of Chemical Engineering and Analytical
Science, University of Manchester, Manchester M13 9PL, United Kingdom
| | - Hassan Mahani
- Innovation and R & D, Shell Global Solutions International, 2280 AB Rijswijk, The Netherlands
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