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Search Publications by: Justin M Gorham (Fed)

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Displaying 1 - 25 of 58

Stability-Enhanced Cisplatin Gold Nanoparticles as Therapeutic Anticancer Agents

December 22, 2023
Author(s)
Tae Joon Cho, Vytas Reipa, John Pettibone, Justin Gorham, Allesandro Tona, Aaron Johnston-Peck, Bryant C. Nelson, Vincent Hackley
Using dendron chemistry, we developed stability-enhanced carboxylate surfacemodified (negatively charged dendron) AuNPs (Au-NCD). Since the carboxylate surface of Au- NCD is optimal for complexation with cisplatin (Pt) moieties, we further synthesized Pt

Atomically Dispersed CuNx Sites from Thermal Activation of Boron Imidazolate Cages for Electrocatalytic Methane Generation

August 12, 2022
Author(s)
Soumyodip Banerjee, Justin Gorham, Maxime Siegler, Natalia Drichko, Joshua Wright, Nicholas Bedford, Sara Thoi
Atomically dispersed heteroatom coordinated metal sites (ADMS) have been recognized as promising candidates for electrochemical conversion. Among a diverse range of molecular precursors for ADMS synthesis, framework materials are particularly interesting

Development of an automated millifluidic platform and data-analysis pipeline for rapid electrochemical corrosion measurements: a pH study on Zn-Ni

July 25, 2022
Author(s)
Howie Joress, Brian DeCost, Najlaa Hassan, Trevor Braun, Justin Gorham, Jason Hattrick-Simpers
We describe the development of a millifluidic based scanning droplet cell platform for rapid and automated corrosion. This system allows for measurement of corrosion properties (e.g., open circuit potential, corrosion current through Tafel and linear

Growth and Decomposition of Pt Surface Oxides

June 28, 2022
Author(s)
Feng Yi, Shane Arlington, Justin Gorham, William Alexander Osborn, Slavomir Nemsak, Ethan Crumlin, David A. LaVan
The formation and thermal stability of Pt surface oxides on Pt thin film were studied in situ using ambient pressure x-ray photoelectron spectroscopy (AP-XPS). AP-XPS allows us to monitor the chemical states of both adsorbed reactants and underlying

Facile fabrication and characterization of kraft lignin@Fe3O4 nanocomposites using pH driven precipitation: effects on increasing lignin content

April 1, 2021
Author(s)
Frankie A. Petrie, Justin Gorham, Robert T. Busch, Serhiy O. Leontsev, Esteban E. Urena-Benavides, Erick S. Vasquez
Kraft lignin@Fe3O4 multicore nanocomposites fabrication proceeded using a simple pH-driven precipitation technique. An alkaline solution for kraft lignin (pH 12) was rapidly injected into an aqueous-based magnetite (Fe3O4) nanoparticle colloidal suspension

Comparative study of multiwall carbon nanotube nanocomposites by Raman, SEM, and XPS measurement techniques

March 3, 2021
Author(s)
Yanmei Piao, Vipin Tondare, Chelsea S. Davis, Justin Gorham, Elijah Petersen, Jeffrey W. Gilman, Keana Scott, Andras Vladar, Angela R. Hight Walker
Substantial ongoing research efforts are investigating the production of novel composite material enhanced by the incorporation of nanomaterial fillers such as multiwall carbon nanotubes (MWCNTs). While the addition of MWCNTs have been shown to improve the

Parallel multi-parameter study of PEI-functionalized gold nanoparticle synthesis for bio- medical applications: Part 2. Elucidating the role of surface chemistry and polymer structure on performance

November 10, 2020
Author(s)
Tae Joon Cho, Justin M. Gorham, John M. Pettibone, Jingyu Liu, Jiaojie Tan, Vincent A. Hackley
Despite the breadth and quality of published work in this area, it remains unclear how the specific properties of polyethyleneimine (PEI) and the methods utilized to conjugate it to gold nanoparticles (AuNPs) impact the final product morphology and

Dissolution and Initial Hydration Behavior of Tricalcium Aluminate in Low Activity Sulfate Solutions

January 22, 2020
Author(s)
Alexander Brand, Steven B. Feldman, Paul E. Stutzman, Anton V. Ievlev, Matthias Lorenz, Darren C. Pagan, Sriramya Nair, Justin Gorham, Jeffrey W. Bullard
The effects on cubic tricalcium aluminate (C3A) hydration of alkali or alkaline earth sulfate electrolytes were evaluated by in situ dissolution rate measurements, by ex situ near-surface composition measurements with secondary ion mass spectrometry, and

Parallel multi-parameter study of PEI-functionalized gold nanoparticle synthesis for bio-medical applications: Part 1. A critical assessment of methodology, properties and stability

August 20, 2019
Author(s)
Tae Joon Cho, Justin M. Gorham, John M. Pettibone, Jingyu Liu, Jiaojie Tan, Vincent A. Hackley
Cationic polyethyleneimine (PEI) conjugated gold nanoparticles (AuNPs) that are chemically and physically stable under physiological conditions are an ideal candidate for certain bio-medical applications, in particular DNA transfection. However, the

Approaches for the Quantitative Analysis of Oxidation State in Cerium Oxide Nanomaterials

September 21, 2018
Author(s)
Christopher M. Sims, Russell A. Maier, Aaron C. Johnston-Peck, Justin M. Gorham, Vincent A. Hackley, Bryant C. Nelson
Cerium oxide nanomaterials (nanoceria, CNMs) are receiving increased attention from the research community due to their unique chemical properties, most prominent of which is their ability to alternate between the Ce3+ and Ce4+ oxidation states. While many

Diffusion in the Ti-Al-V system

August 23, 2018
Author(s)
Greta Lindwall, Kil-Won Moon, Zhangqi Chen, Michael J. Mengason, Maureen E. Williams, Justin Gorham, Ji-Cheng Zhao, Carelyn E. Campbell
Diffusion in the Ti-Al-V system is studied and a CΑLPHAD diffusion mobility description is developed. Diffusion couple experiments are used to obtain information of Al and V diffusion in the α phase. This includes diffusion paths at the temperatures 923 K

Formation of a crack-free, hybrid skin layer with tunable surface topography and improved gas permeation selectivity on elastomers using gel-liquid infiltration polymerization

September 11, 2017
Author(s)
Justin Gorham, Jason Killgore, Maryam Omidvar, Haiqing Lin, Frank W. DelRio, Lewis M. Cox, Zheng Zhang
Liquid-liquid interfacial polymerization (ll-IP) is conventionally used for manufacturing bulk polymers like nylon, as well as forming barrier layers for reverse osmosis membranes. In this work, we explore the use of gel-liquid infiltration polymerization

Quantitative Analysis of Oxidation State in Cerium Oxide Nanomaterials

May 14, 2017
Author(s)
Christopher Sims, Russell Maier, Aaron Johnston-Peck, Justin Gorham, Vincent A. Hackley, Bryant C. Nelson
Cerium oxide nanoparticles (nanoceria) are receiving increased attention from the research community due to the large number and wide range of their current and potential applications. The attractiveness of nanoceria for these various applications is