Publications

Showing 162 results for Author: Todd J. Toops

View All publications

  • Aug, 2026

    Journal

    Facile synthesis of Co(OH)2 nanoneedle arrays grown on stainless steel for industrial electrochemical oxygen evolution reaction

    The electrochemical oxygen evolution reaction (OER) is a critical half-reaction in a variety of energy conversion and storage applications, however, OER suffers from sluggish kinetics due to the four proton-electron transfer processes. To remedy this, interfacial engineering proves an effective strategy to design high active OER catalysts. Herein, we report a facile synthe…

  • Apr, 2026

    Conference Paper

    Zero-CO Residential Natural Gas Furnace

    Residential natural gas furnaces are widely used in the US homes. Manufacturers dedicate significant design and testing resources to meet requirements of design standards. One area of these standards is controlling flue gas carbon monoxide (CO) emissions. To more effectively reduce CO emissions at the flue, we developed a novel catalyst-assisted approach that integrated a…

  • Sep, 2025

    Journal

    Catalytic Oxygen Reduction for Deep O2 removal from CO2 Streams

    Streams of CO2 from various capture processes may contain several impurities of which O2 is often overlooked as a problematic impurity. Because of its reactivity, the National Energy Technology Laboratory has recommended a stringent limit, less than 10 ppm, for the O2 level in treated CO2 products for safe transport, storage, and utilization. In this study, a variety of ca…

  • Sep, 2025

    Journal

    Catalyst Deactivation Modes of PdO/γ-Al2O3 Catalysts for Lean Methane Oxidation

    PdO/γ-Al2O3 catalysts are one of the most active catalytic components for the complete oxidation of methane. Under reaction conditions, especially in a wet feed, the catalysts suffer severe performance degradation. This study establishes a series of testing protocols to systematically investigate the causes of catalyst deactivation under methane oxidation reaction conditio…

  • Sep, 2025

    Journal

    Enhancing the low-temperature performance of Pt-based three-way catalysts using CeO2 (core)@ ZrO2 (shell) supports

    Developing robust Pt/CeO2-based three-way catalysts (TWCs) with enhanced oxygen buffering capability and low-temperature activity is highly desirable. In this study, a new TWC family, Pt/(1 − x)CeO2(core)@xZrO2(shell) (where x = 0–0.5), was prepared and evaluated at degreened (DG) and hydrothermally aged (HTA) states. Incorporation of 0.1 molar concentration of ZrO2 result…

  • Sep, 2025

    Journal

    Active and Stable PtPd Diesel Oxidation Catalysts under Industry-Defined Test Protocols

    Nanoparticle-supported Pt and Pd catalysts are employed industrially to convert CO and hydrocarbon residue from incomplete diesel fuel combustion into more environmentally-benign products. However, these catalysts deactivate over time due to sintering, especially for Pt nanoparticles which readily generate volatile species under high operating temperatures. Here, we turned…

  • Jul, 2025

    Journal

    Performance Degradation of Amine-Infused Fiber Sorbents for Direct Air Capture: Mechanisms and Solutions

    Sorbent stability poses significant impacts on long-term performance of direct air capture (DAC) of CO2 and levelized cost of capture (LCOC). We report the DAC performance degradation of amine-infused fiber sorbents based on poly(ethylenimine) (PEI), mesoporous SiO2, and cellulose acetate (CA) over CO2 cyclic sorption cycles in a nonoxidative environment. Infrared and nucl…

  • Dec, 2024

    Journal

    Mechanistic and Kinetic Analysis of Complete Methane Oxidation on a Practical PtPd/Al2O3 Catalyst

    A PtPd/Al2O3 catalyst developed for the complete oxidation of methane from the ventilation air of underground coal mines is compared against a model PdO/Al2O3 catalyst. Although the PtPd/Al2O3 catalyst is substantially more active and stable than the model catalyst, the nature of active sites between the two catalysts is deemed to be fundamentally the same based on their r…

  • Nov, 2024

    Journal

    Irreversible Catalyst Deactivation Mechanisms of PdO/γ-Al2O3 Catalysts for Lean Methane Oxidation

    PdO/γ-Al2O3 catalysts suffer from gradual and irreversible catalyst deactivation under lean CH4 oxidation conditions, especially in a wet feed. Time-resolved CO chemisorption DRIFTS measurements are conducted systematically on a series of PdO/γ-Al2O3 catalysts to probe the surface reactivity of PdO nanoparticles after various in situ pretreatments. At 80 °C, CO barely adso…

1
2
…
14