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Electrospun metal and metal alloy decorated TiO(2) nanofiber photocatalysts for hydrogen generation

Photocatalytic nanofibers of TiO(2) decorated with 2% metal (Pt, Pd, and Cu) and metal alloys (Pt(2)Pd and PtCu) were synthesized by the polymer-assisted electrospinning method, followed by microwave-assisted ethylene glycol reduction. Structurally, nanofibers calcined at 500 °C adopted an anatase p...

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Autores principales: Ligon, Courtney, Latimer, Kaniece, Hood, Zachary D., Pitigala, Sanuja, Gilroy, Kyle D., Senevirathne, Keerthi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9086326/
https://www.ncbi.nlm.nih.gov/pubmed/35547708
http://dx.doi.org/10.1039/c8ra04148b
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author Ligon, Courtney
Latimer, Kaniece
Hood, Zachary D.
Pitigala, Sanuja
Gilroy, Kyle D.
Senevirathne, Keerthi
author_facet Ligon, Courtney
Latimer, Kaniece
Hood, Zachary D.
Pitigala, Sanuja
Gilroy, Kyle D.
Senevirathne, Keerthi
author_sort Ligon, Courtney
collection PubMed
description Photocatalytic nanofibers of TiO(2) decorated with 2% metal (Pt, Pd, and Cu) and metal alloys (Pt(2)Pd and PtCu) were synthesized by the polymer-assisted electrospinning method, followed by microwave-assisted ethylene glycol reduction. Structurally, nanofibers calcined at 500 °C adopted an anatase phase along with a remnant rutile phase. Morphological, structural, and photocatalytic studies were carried out using scanning and transmission electron microscopy equipped with an energy dispersive spectroscopy attachment, X-ray powder diffraction, X-ray photoelectron spectroscopy, and photocatalytic hydrogen generation under UV-Vis irradiation. The calcined nanofibers were found to have a diameter of 60.0 ± 5.0 nm and length of up to several microns. High resolution TEM imaging suggests that the nanofibers are composed of agglomerated individual TiO(2) nanoparticles, which are tightly packed and stacked along the axial direction of the nanofibers. PXRD studies suggest alloy formation, as evident from peak shifting towards higher two-theta values. Surface modification with co-catalysts is shown to contribute considerably to the rate of photocatalytic H(2) generation. The amount of H(2) generated gradually increases as a function of time. The 2%Pt(2)Pd/TiO(2) catalyst shows the highest rate of H(2) generation (4 mmol h(−1) gram(catalyst)), even higher than that of 2%Pt/TiO(2) nanofiber photocatalyst (2.3 mmol h(−1) gram(catalyst)), while 2%Cu/TiO(2) nanofiber photocatalyst shows the least activity among the decorated catalysts (0.04 mmol h(−1) gram(catalyst)).
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spelling pubmed-90863262022-05-10 Electrospun metal and metal alloy decorated TiO(2) nanofiber photocatalysts for hydrogen generation Ligon, Courtney Latimer, Kaniece Hood, Zachary D. Pitigala, Sanuja Gilroy, Kyle D. Senevirathne, Keerthi RSC Adv Chemistry Photocatalytic nanofibers of TiO(2) decorated with 2% metal (Pt, Pd, and Cu) and metal alloys (Pt(2)Pd and PtCu) were synthesized by the polymer-assisted electrospinning method, followed by microwave-assisted ethylene glycol reduction. Structurally, nanofibers calcined at 500 °C adopted an anatase phase along with a remnant rutile phase. Morphological, structural, and photocatalytic studies were carried out using scanning and transmission electron microscopy equipped with an energy dispersive spectroscopy attachment, X-ray powder diffraction, X-ray photoelectron spectroscopy, and photocatalytic hydrogen generation under UV-Vis irradiation. The calcined nanofibers were found to have a diameter of 60.0 ± 5.0 nm and length of up to several microns. High resolution TEM imaging suggests that the nanofibers are composed of agglomerated individual TiO(2) nanoparticles, which are tightly packed and stacked along the axial direction of the nanofibers. PXRD studies suggest alloy formation, as evident from peak shifting towards higher two-theta values. Surface modification with co-catalysts is shown to contribute considerably to the rate of photocatalytic H(2) generation. The amount of H(2) generated gradually increases as a function of time. The 2%Pt(2)Pd/TiO(2) catalyst shows the highest rate of H(2) generation (4 mmol h(−1) gram(catalyst)), even higher than that of 2%Pt/TiO(2) nanofiber photocatalyst (2.3 mmol h(−1) gram(catalyst)), while 2%Cu/TiO(2) nanofiber photocatalyst shows the least activity among the decorated catalysts (0.04 mmol h(−1) gram(catalyst)). The Royal Society of Chemistry 2018-09-24 /pmc/articles/PMC9086326/ /pubmed/35547708 http://dx.doi.org/10.1039/c8ra04148b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Ligon, Courtney
Latimer, Kaniece
Hood, Zachary D.
Pitigala, Sanuja
Gilroy, Kyle D.
Senevirathne, Keerthi
Electrospun metal and metal alloy decorated TiO(2) nanofiber photocatalysts for hydrogen generation
title Electrospun metal and metal alloy decorated TiO(2) nanofiber photocatalysts for hydrogen generation
title_full Electrospun metal and metal alloy decorated TiO(2) nanofiber photocatalysts for hydrogen generation
title_fullStr Electrospun metal and metal alloy decorated TiO(2) nanofiber photocatalysts for hydrogen generation
title_full_unstemmed Electrospun metal and metal alloy decorated TiO(2) nanofiber photocatalysts for hydrogen generation
title_short Electrospun metal and metal alloy decorated TiO(2) nanofiber photocatalysts for hydrogen generation
title_sort electrospun metal and metal alloy decorated tio(2) nanofiber photocatalysts for hydrogen generation
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9086326/
https://www.ncbi.nlm.nih.gov/pubmed/35547708
http://dx.doi.org/10.1039/c8ra04148b
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