Photocatalytic Reduction of Aqueous Nitrate with Hybrid Ag/g-C3N4 under Ultraviolet and Visible Light

dc.contributor.authorVarapragasam, Shelton J. P.
dc.contributor.authorAndriolo, Jessica M.
dc.contributor.authorSkinner, Jack L.
dc.contributor.authorGrumstrup, Erik M.
dc.date.accessioned2022-08-29T22:08:13Z
dc.date.available2022-08-29T22:08:13Z
dc.date.issued2021
dc.description.abstractThe concentration of nitrate in natural surface waters by agricultural runoff remains a challenging problem in environmental chemistry. One promising denitrification strategy is to utilize photocatalysts, whose light-driven excited states are capable of reducing nitrate to nitrogen gas. We have synthesized and characterized pristine and silver-loaded graphitic carbon nitrides and assessed their activity for photocatalytic nitrate reduction at neutral pH. While nitrate reduction does occur on the pristine material, the silver cocatalyst greatly enhances product yields. Kinetic studies performed in batch photoreactors under both UV and visible excitation suggest that nitrate reduction to produce aqueous nitrite, ammonium, and nitrogen gas proceeds via a cooperative water reduction on the silver metal domains to produce adsorbed H atoms. By varying the percentage of silver loading onto the g-C3N4, the density of metal domains can be adjusted, which in turn tunes the reduction selectivity toward various products.en_US
dc.identifier.citationVarapragasam, S. J., Andriolo, J. M., Skinner, J. L., & Grumstrup, E. M. (2021). Photocatalytic Reduction of Aqueous Nitrate with Hybrid Ag/g-C3N4 under Ultraviolet and Visible Light. ACS omega, 6(50), 34850-34856.en_US
dc.identifier.issn2470-1343
dc.identifier.urihttps://scholarworks.montana.edu/handle/1/17014
dc.language.isoen_USen_US
dc.publisherAmerican Chemical Societyen_US
dc.rightscc-byen_US
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/en_US
dc.subjectPhotocatalyticen_US
dc.titlePhotocatalytic Reduction of Aqueous Nitrate with Hybrid Ag/g-C3N4 under Ultraviolet and Visible Lighten_US
dc.typeArticleen_US
mus.citation.extentfirstpage34850en_US
mus.citation.extentlastpage34856en_US
mus.citation.issue50en_US
mus.citation.journaltitleACS Omegaen_US
mus.citation.volume6en_US
mus.identifier.doi10.1021/acsomega.1c05523en_US
mus.relation.collegeCollege of Letters & Scienceen_US
mus.relation.departmentChemistry & Biochemistry.en_US
mus.relation.universityMontana State University - Bozemanen_US

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