Synthesis, Characterization, Modeling and Applications of Functional Porous Materials: Porous Materials III
Sponsored by: ACerS Basic Science Division
Program Organizers: Lan Li, Boise State University; Winnie Wong-Ng, National Institute of Standards and Technology; Kevin Huang, University of South Carolina
Tuesday 8:00 AM
October 11, 2022
Room: 325
Location: David L. Lawrence Convention Center
Session Chair: Kevin Huang, University of South Carolina
8:00 AM Invited
Multilayer Coating with a Superhydrophobic Porous Top Layer for Carbon Steel Corrosion Protection: Fangming Xiang1; David Hopkinson1; 1National Energy Technology Laboratory
Superhydrophobic coatings are well-suited for corrosion prevention thanks to their ability to retain air pockets between the corrosive liquid and the coating, which could greatly reduce the contact area with the corrosive liquid and thus retard corrosion. In this study, a porous surface layer made of nano-raspberry shaped silica nanoparticles was prepared to trap air and induce superhydrophobicity. This porous surface layer produced via layer-by-layer assembly was further optimized by altering the size, deposition sequence, and dispersion medium of silica nanoparticles. By combining the optimized superhydrophobic top layer with a bottom layer based on corrosion inhibitors, a multilayer coating that could significantly improve the corrosion resistance of carbon steel in CO2-saturated water was obtained.
8:30 AM Invited
Enhanced Recovery of Platinum Group Elements Using Functionalized Silica Materials Coupled with Durable Carbon Storage via Mineralization: Greeshma Gadikota1; Ruyi Zheng1; Prince Ochonma1; 1Cornell University
Accelerating the transition to renewable energy resources and scalable energy storage technologies requires advancing sustainable approaches to recover platinum group elements from naturally occurring ores and alkaline residues. As an alternative to liquid-liquid extraction approaches that typically rely on the use of an organic phase to metals separation, functional materials that have a high affinity to bind platinum group elements selectively and are easily regenerable are crucial for energy- and atom-efficient separations. We will discuss approaches to functionalize silica surfaces using ligands that are highly selective for platinum group elements in multi-component ionic environments. Furthermore, the reactive crystallization of Group II elements (e.g., Ca, Mg) using regenerable solvents and CO2 to produce the respective solid carbonates is harnessed to separate other dissolved metals from these solutions. These approaches will pave the way for energy and atom-efficient pathways to harness platinum group elements from complex natural and engineered substrates.
9:00 AM
Synthesis of Hierarchical Pore Structures Within Monolithic Silica: Karthikeyan Baskaran1; Muhammad Ali1; Casey Elliott1; Brian Riley2; Krista Carlson1; 1University of Nevada, Reno; 2Pacific Northwest National Laboratory
Silica monoliths, such as aerogels and xerogels, are of immense interest as a sorbent material, due to their high specific surface area, material stability and ability to be functionalized. However, traditional aerogels only offer nano- and micropores, limiting its permeability - an important factor for a monolithic adsorbent. To overcome this limitation, this work uses soybean oil as a porogen to introduce macropores within silica monoliths. Presence of nano-, micro-, and macropores creates a hierarchical pore structure that results in higher permeability as well as provision of more access to adsorption sites in the monolith.
9:20 AM
Synthesis, Processing and Characterization of Intermetallic Compounds in the Ni-Al And Ti-Al System When Producing Porous Materials: Borys Sereda1; Iryna Kruhliak1; Yuriy Belokon1; Dmytro Sereda1; 1Dneprovsky State Technical University
The article discusses synthesis, processing and characterization of intermetallic compounds in the Ni-Al and Ti-Al system when producing porous materials. For activation energy determination at the intermetallics formation are considered: theoretical calculation method based on the results of thermodynamic analysis during SHS-reactions and experimental method based on the study of the kinetics formation in intermetallic phases. It is established that the activation energies for the Ni-Al and Ti-Al systems are ~45 and ~82 kJ/mol respectively. It is shown that the difference between the values of activation energies obtained by two different methods does not exceed 5 %. The obtained results can be used for further calculations of reactions in the physicochemical model in intermetallide systems upon receipt of special alloys of the Ni-Al and Ti-Al systems formed under non-stationary temperature conditions.
9:40 AM Invited
Electrochemically-induced Amorphous to
Crystalline Transformation in Niobium Oxide Electrodes for Lithium-ion
Batteries
: Hui Xiong1; Pete Barnes2; Yunxing Zuo3; Kiev Dixon1; Shyue Ping Ong3; 1Boise State University; 2Idaho National Laboratory; 3University of California – San Diego
Intercalation-type metal oxide electrodes are promising negative electrode materials for safe and stable operation of rechargeable lithium-ion batteries due to the reduced risk of Li plating at low voltages. Nevertheless, lower energy and power density along with cycling instability remain a bottleneck for their implementation, especially for desirable fast charging applications. In this talk, we will discuss an electrochemically driven amorphous-to-crystalline (a-to-c) transformation in a nanoporous Nb2O5 material for Li ion storage. Through integrated experimental and computational study, we elucidated the mechanism of multi-electron transfer reaction in the a-to-c Nb2O5 electrode as well as its enhanced kinetics for Li-ion batteries.
10:10 AM Break
10:30 AM
Valorization of Waste to Energy Ash through Engineered Cellular Magmatics: Austin Stanfield1; Cory Trivelpiece1; Collin Wilkinson2; Robert Hust2; Thomas Adams2; 1Savannah River National Laboratory; 2Glass WRX
Waste to Energy (WTE) ash was incorporated into synthetic foamed ceramics materials called engineered cellular magmatics (ECMs). Two methods for WTE ash inclusion were explored: 1) Additions of varying concentrations of fly and/or bottom ash into existing ECM recipes utilizing post-consumer recycled waste glass, and 2) direct conversion of WTE ash (fly and/or bottom) into ECM. In both tracts, the primary goal was to develop a product that meets or exceeds predetermined specifications and criteria for entry into geotechnical fill/aggregate markets. Products meeting these specifications were also tested and further optimized for use as supplementary cementitious materials.
10:50 AM
Luminescent Tb3+-Doped Fluorapatite/Agar Nanocomposite for Detecting UO22+, Cu2+, and Cr3+ Ions: Yuanbing Mao1; Hongjuan Liu1; 1Illinois Institute of Technology
Radionuclides and heavy metal ions are main harmful pollutants in the environment. Developing sensitive and rapid methods to detect them from natural or waste waters is important to reduce their exposure risks. In this study, a novel luminescent Tb3+-doped fluorapatite/agar nanocomposite (Tb-FAP/agar) has been synthesized via a facile and green synthetic route through an environmentally friendly biomineralization process using agar as a template. The nanocomposite is the first luminescent fluorapatite for detecting UO22+, Cu2+, and Cr3+ ions in water with high selectivity and sensitivity based on luminescence turn-off effects. The detection limits of the Tb-FAP/agar for UO22+ (7.95 nM), Cu2+ (3.94 nM), and Cr3+ (1.67 nM) are much lower than the permissible limits in drinking water defined by EPA. Furthermore, the luminescent detection mechanisms for UO22+, Cu2+, and Cr3+ ions were speculated. Our study provides insight into developing biodegradable rare earth doping fluorapatite probe for both radioactive and nonradioactive ions.