Benny D. Freeman
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View article: Photopolymerized Mixed Matrix Membranes for Liquid Organic Hydrogen Carrier Separation
Photopolymerized Mixed Matrix Membranes for Liquid Organic Hydrogen Carrier Separation Open
Liquid organic hydrogen carriers (LOHCs) are infrastructure‐compatible media for hydrogen storage and transport under ambient conditions, addressing hydrogen's volatility, low density, and high reactivity. Separating liquid hydrogen‐lean/h…
View article: Practical Considerations in the Design and Use of Non‐Crystalline Metal–Organic Frameworks
Practical Considerations in the Design and Use of Non‐Crystalline Metal–Organic Frameworks Open
The concept of non‐Crystalline Metal–Organic Frameworks (MOFs) is both theoretically exciting and rich in potential applications. Since their conceptual introduction, research in this field has experienced significant growth. This review p…
View article: Solution‐Like Water Transport Across Molecular to Macroscopic Length Scales in Crosslinked Poly(Ethylene Glycol Diacrylate) Networks With Tailored Sidechains
Solution‐Like Water Transport Across Molecular to Macroscopic Length Scales in Crosslinked Poly(Ethylene Glycol Diacrylate) Networks With Tailored Sidechains Open
Poly(ethylene glycol) (PEG)‐based materials, like PEG‐diacrylate (PEGDA), are prized for their hydrophilic, inert properties, and leveraged in hydrogels and as membrane mimics. While network chemistry is often tuned for selective transport…
View article: Permeate fluxes from desalination of brines and produced waters: A reactive transport modeling study
Permeate fluxes from desalination of brines and produced waters: A reactive transport modeling study Open
The increasing interest in the use of membrane systems to desalinate inland brackish water, agricultural drainage, and industrially produced wastewater demands improved means of predicting desalination system performance under variable fee…
View article: Mineral Scale Formation during Crossflow Reverse Osmosis at Constant Flux and Constant Transmembrane Pressure Conditions
Mineral Scale Formation during Crossflow Reverse Osmosis at Constant Flux and Constant Transmembrane Pressure Conditions Open
Mineral scale formation on membrane surfaces is a significant challenge in reverse osmosis water purification. Laboratory fouling experiments are typically run such that the transmembrane pressure (TMP) is fixed, and the permeate flux decr…
View article: Challenges and Prospects of Microporous Membranes for High‐Temperature Hydrogen Separation
Challenges and Prospects of Microporous Membranes for High‐Temperature Hydrogen Separation Open
The development of microporous membranes for high‐temperature hydrogen (H 2 ) separation is crucial for advancing hydrogen as a clean energy source. This review critically evaluates recent progress in materials and technologies designed fo…
View article: Supersoft Norbornene‐Based Thermoplastic Elastomers with High Strength and Upper Service Temperature
Supersoft Norbornene‐Based Thermoplastic Elastomers with High Strength and Upper Service Temperature Open
With over 6 million tons produced annually, thermoplastic elastomers (TPEs) have become ubiquitous in modern society, due to their unique combination of elasticity, toughness, and reprocessability. Nevertheless, industrial TPEs display a t…
View article: Hybrid Epoxy-Acrylate Resins for Wavelength-Selective Multimaterial 3D Printing
Hybrid Epoxy-Acrylate Resins for Wavelength-Selective Multimaterial 3D Printing Open
Structures in nature have evolved to combine hard and soft materials in precise 3D arrangements, which imbues bulk properties and functionality that remain elusive to mimic synthetically. However, the potential for biomimetic analogs to se…
View article: Ion and Water Dynamics in the Transition from Dry to Wet Conditions in Salt-Doped PEG
Ion and Water Dynamics in the Transition from Dry to Wet Conditions in Salt-Doped PEG Open
The influence of the water content on ion and water transport mechanisms in polymer membranes under low to moderate hydration conditions remains poorly understood. In this study, we combine ion and water diffusivity (PFG-NMR) measurements …
View article: Light-induced additive manufacturing in membrane technology
Light-induced additive manufacturing in membrane technology Open
Membranes have been extensively investigated as key enabling technologies to exit energy-intensive separation processes. Nevertheless, conventional membrane fabrication techniques present several challenges, such as requiring tight process…
View article: Spatially confined enzymatic tandem system with GOx and HRP compartmentalized in ultrafiltration membrane
Spatially confined enzymatic tandem system with GOx and HRP compartmentalized in ultrafiltration membrane Open
The precise control of timely and spatially defined enzymatic reactions is of considerable interest in biology, biomedical engineering, and bio-catalysis. In this study, we report a robust multi-enzymatic cascade system with glucose oxidas…
View article: Quaternary Ammonium-Functionalized Poly(Arylene Ether Sulfone) Random Copolymers for Direct Air Capture
Quaternary Ammonium-Functionalized Poly(Arylene Ether Sulfone) Random Copolymers for Direct Air Capture Open
Direct air capture (DAC) is a promising tool for reducing CO2 concentrations in the atmosphere and fighting climate change. We synthesized a series of quaternary ammonium (QA) functionalized poly(arylene ether sulfone) copolymers with vary…
View article: Thermally-rearranged polymer blends for gas separation membranes
Thermally-rearranged polymer blends for gas separation membranes Open
Polymer blends comprising an ortho-functionalized polyimide homo or copolymer and a polybenzimidazole homo or copolymer, wherein the ortho-functionalized polyimide thermally rearranges to a polymer comprising a phenylene heterocyclic group…
View article: Fundamental Structure/Property Studies of Gas Separation Membrane Polymers
Fundamental Structure/Property Studies of Gas Separation Membrane Polymers Open
Solution-processable polybenzimidazoles (PBIs) present opportunities for new gas separation membranes. We plan to develop systematic structure/property relations for this relatively new class of membrane materials. The fundamental question…
View article: Nanostructure‐Derived Antireflectivity in Leafhopper Brochosomes
Nanostructure‐Derived Antireflectivity in Leafhopper Brochosomes Open
Understanding how insect‐derived biomaterials interact with light has led to new advances and interdisciplinary insights in entomology and physics. Leafhoppers are insects that coat themselves with highly ordered biological nanostructures …
View article: A smart alarm for particle accelerator beamline operations
A smart alarm for particle accelerator beamline operations Open
We present the initial results of a proof-of-concept ‘smart alarm’ for the Continuous Electron Beam Accelerator Facility injector beamline at Jefferson Lab. To minimize machine downtime and improve operational efficiency, an autonomous ala…