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1. ALD based nanostructured zinc oxide coated antiviral silk fabric

   https://doi.org/10.1039/d2ra02653h  

   Kumar, Udit; Fox, Candace R.; Feit, Corbin; Kolanthai, Elayaraja; Sheiber, Jeremy; Fu, Yifei; Singh, Sushant; Banerjee, Parag; Parks, Griffith D.; Seal, Sudipta (June 2022, RSC Advances)

   The COVID-19 pandemic has underscored the importance of research and development in maintaining public health. Facing unprecedented challenges, the scientific community developed antiviral drugs, virucides, and vaccines to combat the infection within the past two years. However, an ever-increasing list of highly infectious SARS-CoV-2 variants (gamma, delta, omicron, and now ba.2 stealth) has exacerbated the problem: again raising the issues of infection prevention strategies and the efficacy of personal protective equipment (PPE). Against this backdrop, we report an antimicrobial fabric for PPE applications. We have fabricated a nanofibrous silk-PEO material using electrospinning followed by zinc oxide thin film deposition by employing the atomic layer deposition technique. The composite fabric has shown 85% more antibacterial activity than the control fabric and was found to possess substantial superoxide dismutase–mimetic activity. The composite was further subjected to antiviral testing using two different respiratory tract viruses: coronavirus (OC43: enveloped) and rhinovirus (RV14: non-enveloped). We report a 95% reduction in infectious virus for both OC43 and RV14 from an initial load of ∼1 × 10 5 (sample size: 6 mm dia. disk), after 1 h of white light illumination. Furthermore, with 2 h of illumination, ∼99% reduction in viral infectivity was observed for RV14. High activity in a relatively small area of fabric (3.5 × 10 3 viral units per mm 2 ) makes this antiviral fabric ideal for application in masks/PPE, with an enhanced ability to prevent antimicrobial infection overall. 

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2. Preparation of Scalable Silica‐Coated Iron Oxide Nanoparticles for Nanowarming

   https://doi.org/10.1002/advs.201901624  

   Gao, Zhe; Ring, Hattie_L; Sharma, Anirudh; Namsrai, Baterdene; Tran, Nam; Finger, Erik_B; Garwood, Michael; Haynes, Christy_L; Bischof, John_C (January 2020, Advanced Science)

   Abstract Cryopreservation technology allows long‐term banking of biological systems. However, a major challenge to cryopreserving organs remains in the rewarming of large volumes (>3 mL), where mechanical stress and ice formation during convective warming cause severe damage. Nanowarming technology presents a promising solution to rewarm organs rapidly and uniformly via inductive heating of magnetic nanoparticles (IONPs) preloaded by perfusion into the organ vasculature. This use requires the IONPs to be produced at scale, heat quickly, be nontoxic, remain stable in cryoprotective agents (CPAs), and be washed out easily after nanowarming. Nanowarming of cells and blood vessels using a mesoporous silica‐coated iron oxide nanoparticle (msIONP) in VS55, a common CPA, has been previously demonstrated. However, production of msIONPs is a lengthy, multistep process and provides only mg Fe per batch. Here, a new microporous silica‐coated iron oxide nanoparticle (sIONP) that can be produced in as little as 1 d while scaling up to 1.4 g Fe per batch is presented. sIONP high heating, biocompatibility, and stability in VS55 is also verified, and the ability to perfusion load and washout sIONPs from a rat kidney as evidenced by advanced imaging and ICP‐OES is demonstrated. 

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3. Lead Oxide Microparticles Coated by Ethylenediamine-Cross-Linked Graphene Oxide for Lithium Ion Battery Anodes

   https://doi.org/10.1021/acsaem.9b00401  

   Guo, Alan; Chen, Eric; Wygant, Bryan R.; Heller, Adam; Mullins, C. Buddie (April 2019, ACS Applied Energy Materials)
4. Chiral Separation of rac-Propylene Oxide on Penicillamine Coated Gold NPs

   https://doi.org/10.3390/nano10091716  

   Shukla, Nisha; Blonder, Zachary; Gellman, Andrew J. (September 2020, Nanomaterials)

   null (Ed.)

   The surfaces of chemically synthesized spherical gold NPs (Au-NPs) have been modified using chiral L- or D-penicillamine (Pen) in order to impart enantioselective adsorption properties. These chiral Au-NPs have been used to demonstrate enantioselective adsorption of racemic propylene oxide (PO) from aqueous solution. In the past we have studied enantioselective adsorption of racemic PO on L- or D-cysteine (Cys)-coated Au-NPs. This prior work suggested that adsorption of PO on Cys-coated Au-NPs equilibrates within an hour. In this work, we have studied the effect of time on the enantioselective adsorption of racemic PO from solution onto chiral Pen/Au-NPs. Enantioselective adsorption of PO on chiral Pen/Au-NPs is time-dependent but reaches a steady state after ~18 h at room temperature. More importantly, L- or D-Pen/Au-NPs are shown to adsorb R- or S-PO enantiospecifically and to separate the two PO enantiomers from racemic mixtures of RS-PO. 

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5. Isolation Methods Influence the Protein Corona Composition on Gold-Coated Iron Oxide Nanoparticles

   https://doi.org/10.1021/acs.analchem.1c05243  

   Hoang, Khoi Nguyen; Wheeler, Korin E.; Murphy, Catherine J. (March 2022, Analytical Chemistry)