Transformation of Nanostructures Cu2O to Cu3Se2 through Different Routes and the Effect on Photocatalytic Properties
In this work, copper selenide (Cu3Se2 umangite phase) was synthesized by two routes, using a chemical reaction and the hydrothermal method to obtain CuSe-A and CuSe-H, respectively. The synthesis of Cu3Se2 consisted of a three-step process: in the first step, copper(I) oxide hexapods (Cu2O) were ob...
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Published in | ACS omega Vol. 5; no. 32; pp. 20335 - 20342 |
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Main Authors | , , , , , |
Format | Journal Article |
Language | English |
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American Chemical Society
18.08.2020
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Abstract | In this work, copper selenide (Cu3Se2 umangite phase) was synthesized by two routes, using a chemical reaction and the hydrothermal method to obtain CuSe-A and CuSe-H, respectively. The synthesis of Cu3Se2 consisted of a three-step process: in the first step, copper(I) oxide hexapods (Cu2O) were obtained as the copper reservoir; in the second step, selenium ions were obtained from the reduction of selenium powder; and in the third step involves mixing two precursors following the two synthesis routes mentioned before. Analysis of X-ray diffraction and X-ray photoelectron spectroscopy showed the formation of the Cu3Se2 phase by both synthesis routes. On the other hand, using the scanning electron microscopy (SEM) technique, it is observed that the Cu3Se2 sample (CuSe-A) is obtained by exchanging in solution with agitation and that the copper selenium phase grows only on the surface of the hexapods. Meanwhile, the hydrothermal route promotes a total conversion of copper(I) oxide hexapods to the copper selenide phase (CuSe-H). The resulting materials were tested as photocatalytic materials to remove methylene blue dye in water under sunlight irradiation. Cu3Se2 (CuSe-H) obtained by the hydrothermal route exhibited a higher efficiency of photodegradation of dye, reaching a removal percentage of 92% after 4 h under sunlight. |
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AbstractList | In
this work, copper selenide (Cu
3
Se
2
umangite
phase) was synthesized by two routes, using a chemical reaction and
the hydrothermal method to obtain CuSe-A and CuSe-H, respectively.
The synthesis of Cu
3
Se
2
consisted of a three-step
process: in the first step, copper(I) oxide hexapods (Cu
2
O) were obtained as the copper reservoir; in the second step, selenium
ions were obtained from the reduction of selenium powder; and in the
third step involves mixing two precursors following the two synthesis
routes mentioned before. Analysis of X-ray diffraction and X-ray photoelectron
spectroscopy showed the formation of the Cu
3
Se
2
phase by both synthesis routes. On the other hand, using the scanning
electron microscopy (SEM) technique, it is observed that the Cu
3
Se
2
sample (CuSe-A) is obtained by exchanging in
solution with agitation and that the copper selenium phase grows only
on the surface of the hexapods. Meanwhile, the hydrothermal route
promotes a total conversion of copper(I) oxide hexapods to the copper
selenide phase (CuSe-H). The resulting materials were tested as photocatalytic
materials to remove methylene blue dye in water under sunlight irradiation.
Cu
3
Se
2
(CuSe-H) obtained by the hydrothermal
route exhibited a higher efficiency of photodegradation of dye, reaching
a removal percentage of 92% after 4 h under sunlight. In this work, copper selenide (Cu3Se2 umangite phase) was synthesized by two routes, using a chemical reaction and the hydrothermal method to obtain CuSe-A and CuSe-H, respectively. The synthesis of Cu3Se2 consisted of a three-step process: in the first step, copper(I) oxide hexapods (Cu2O) were obtained as the copper reservoir; in the second step, selenium ions were obtained from the reduction of selenium powder; and in the third step involves mixing two precursors following the two synthesis routes mentioned before. Analysis of X-ray diffraction and X-ray photoelectron spectroscopy showed the formation of the Cu3Se2 phase by both synthesis routes. On the other hand, using the scanning electron microscopy (SEM) technique, it is observed that the Cu3Se2 sample (CuSe-A) is obtained by exchanging in solution with agitation and that the copper selenium phase grows only on the surface of the hexapods. Meanwhile, the hydrothermal route promotes a total conversion of copper(I) oxide hexapods to the copper selenide phase (CuSe-H). The resulting materials were tested as photocatalytic materials to remove methylene blue dye in water under sunlight irradiation. Cu3Se2 (CuSe-H) obtained by the hydrothermal route exhibited a higher efficiency of photodegradation of dye, reaching a removal percentage of 92% after 4 h under sunlight. |
Author | Ramírez-Bon, Rafael Samaniego-Benítez, J. Enrique García-García, Alejandra Ramírez-Aparicio, Jeannete Serrato, Ricardo Flores-Rojas, Ernesto |
AuthorAffiliation | Cátedras CONACyT-Instituto Nacional de Electricidad y Energías Limpias Centro de Investigación en Materiales Avanzados Unidad Monterrey Laboratorio de Síntesis y Modificación de Nanoestructuras y Materiales Bidimensionales Universidad del Valle de México Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional − Unidad Querétaro Universidad Tecnológica de Querétaro Cátedras CONACyT- Instituto Politécnico Nacional − Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada Unidad Legaria |
AuthorAffiliation_xml | – name: Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional − Unidad Querétaro – name: Cátedras CONACyT-Instituto Nacional de Electricidad y Energías Limpias – name: Universidad Tecnológica de Querétaro – name: Cátedras CONACyT- Instituto Politécnico Nacional − Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada Unidad Legaria – name: Centro de Investigación en Materiales Avanzados Unidad Monterrey – name: Universidad del Valle de México – name: Laboratorio de Síntesis y Modificación de Nanoestructuras y Materiales Bidimensionales |
Author_xml | – sequence: 1 givenname: Ernesto surname: Flores-Rojas fullname: Flores-Rojas, Ernesto organization: Universidad del Valle de México – sequence: 2 givenname: J. Enrique orcidid: 0000-0003-1850-4891 surname: Samaniego-Benítez fullname: Samaniego-Benítez, J. Enrique organization: Cátedras CONACyT- Instituto Politécnico Nacional − Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada Unidad Legaria – sequence: 3 givenname: Ricardo surname: Serrato fullname: Serrato, Ricardo organization: Universidad Tecnológica de Querétaro – sequence: 4 givenname: Alejandra surname: García-García fullname: García-García, Alejandra organization: Laboratorio de Síntesis y Modificación de Nanoestructuras y Materiales Bidimensionales – sequence: 5 givenname: Rafael orcidid: 0000-0001-8939-6731 surname: Ramírez-Bon fullname: Ramírez-Bon, Rafael organization: Centro de Investigación y de Estudios Avanzados del Instituto Politécnico Nacional − Unidad Querétaro – sequence: 6 givenname: Jeannete orcidid: 0000-0002-0167-5283 surname: Ramírez-Aparicio fullname: Ramírez-Aparicio, Jeannete email: jramireza@conacyt.mx organization: Cátedras CONACyT-Instituto Nacional de Electricidad y Energías Limpias |
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Title | Transformation of Nanostructures Cu2O to Cu3Se2 through Different Routes and the Effect on Photocatalytic Properties |
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