Background & Significance   Organophosphates (OP) inhibit the breakdown of neurotransmitters and are extremely toxic Silica-supported metal catalysts can neutralize OP in presence of H2O2 H2O2 is hazardous to transport, unsustainable to produce Silica decomposes during synthesi

Alley, Katelyn

Cunneen, Quinn

Prieto, Dario

English

Digital Commons @ Montana Tech

Montana Tech Library Digital Commons @ Montana Tech TECHxpo Student Scholarship Spring 4-13-2020 Titania-based Metal Photo-catalysts for Organophosphate Neutralization Katelyn Alley Montana Technological University Quinn Cunneen Montana Technological University Dario Prieto Montana Technological University Follow this and additional works at: https://digitalcommons.mtech.edu/techxpo Recommended Citation Alley, Katelyn; Cunneen, Quinn; and Prieto, Dario, "Titania-based Metal Photo-catalysts for Organophosphate Neutralization" (2020). TECHxpo. 14. https://digitalcommons.mtech.edu/techxpo/14 This Poster is brought to you for free and open access by the Student Scholarship at Digital Commons @ Montana Tech. It has been accepted for inclusion in TECHxpo by an authorized administrator of Digital Commons @ Montana Tech. For more information, please contact sjuskiewicz@mtech.edu. Potential solution: Titania• Robust porous oxide with high SSA• Two crystal phases (Rutile, Anatase) and a mixed phase (Aeroxide)• H2O2 production under a UV irradiationTitania-based metal photo-catalysts fororganophosphate neutralizationKatelyn Alley (BS Chem ‘21), Quinn Cunneen (BS Chem ‘20) and Dario PrietoBackground & Significance• Organophosphates (OP) inhibit the breakdown of neurotransmitters and are extremely toxic • Silica-supported metal catalysts can neutralize OP in presence of H2O2• H2O2 is hazardous to transport, unsustainable to produce• Silica decomposes during synthesisUpcoming work• Extend method to Fe, Co, and Zn• Effect of metal precursor and loading on surface area and metal structureAcknowledgmentsThis research was sponsored by the Combat Capabilities Development Command, Army Research Laboratory and was accomplished under Cooperative Agreement Number W911NF-15-2-0020.We thank Gary Wyss, Molly Brockway, and Katie Hailer for their technical support.From:Illas et al.J. Phys. Chem. Lett. 2017, 8, 22, 5593Adapted from:Catal. Sci. Technol.Royal society of chem, 7 (2017), 4977-4983Metal loading affects activity • The photoactive properties remain constant regardless of the material• Activity change is due to the metal I am currently a junior at Montana Technological University pursuing my degree in Biochemistry. I was born and raised in Butte, Montana and decided to pursue my degree at my hometown college. After graduation, I plan on pursuing a Ph.D. in chemistry. In the future, I would like to work as an educator to inspire the next generation of scientists. Katelyn Alley Biochemistry 21’01020304050600 5 10 15 20 25% ConversionTime, minutes0102030405060Copper - A Copper - B Cobalt - A Cobalt - B% Conversion @ 10 minutesAnatase-based CatalystSilica Anatase Rutile AeroxideIncipient Wetness, ml/g0.7 0.4 0.4 0.8Surface Area, m2/g370 50 50 65Metal loadings, atom/nm20.00076 0.0032 0.0032 0.0049Higher metal loadings with TitaniaUV light increases the rate of reaction• Reaction can occur without UV light but the addition of UV light increases the reaction rate • Materials prepared with EDTA and Nitrate show same reactivity• Addition of titania to silica-based catalysts increases the reactivityConclusion • The materials are active in organophosphate neutralization without an oxidant • No obvious changes in the band gap• Light increases reaction • The catalysts deactivate 

Titania-based Metal Photo-catalysts for Organophosphate Neutralization

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Titania-based Metal Photo-catalysts for Organophosphate Neutralization

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