Preparation and characterization of the polycrystalline material Zn5(OH)6(CO3)2. Determination of the active species in oxide-reduction processes

F. Tzompantzi; C. Tzompantzi-Flores; N. S. Portillo-Vélez; J. C. Castillo-Rodríguez; R. Gómez; Raúl Pérez Hernández; C. E. Santolalla-Vargas

doi:10.1016/j.fuel.2020.118471

Preparation and characterization of the polycrystalline material Zn₅(OH)₆(CO₃)₂. Determination of the active species in oxide-reduction processes

F. Tzompantzi, C. Tzompantzi-Flores, N. S. Portillo-Vélez, J. C. Castillo-Rodríguez, R. Gómez, Raúl Pérez Hernández, C. E. Santolalla-Vargas

Centro Interdisciplinario de Investigaciones y Estudios sobre Medio Ambiente y Desarrollo (CIIEMAD)

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Resumen

The aim of this work is study the optical, structural, textural and morphological properties of hydrozincite (Zn₅(OH)₆(CO₃)₂). The semiconductor has been employed as photocatalytic support and has proved to be active in both oxidation and reduction processes. In this work is demonstrated that the photocatalytic activity of the bare material can be improved at suitable experimental conditions. The photocatalytic activity of hydrozincite was assessed in phenol oxidation and H₂ production. The mineralization percentage of phenol at 6 h was 40% while the highest rate constant of H₂ production was 2326 μmol g⁻¹h⁻¹. TEM studies point to the high photocatalytic performance of hydrozincite in oxide-reduction processes is principally attributed to the formation of a polycrystalline material. Additionally, the active species participating in oxide-reduction reactions were followed ([rad]OH, [rad]O₂^-, h⁺) by fluorescence and UV–Vis spectroscopy.

Idioma original	Inglés
Número de artículo	118471
Publicación	Fuel
Volumen	281
DOI	https://doi.org/10.1016/j.fuel.2020.118471
Estado	Publicada - 1 dic. 2020

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Tzompantzi, F., Tzompantzi-Flores, C., Portillo-Vélez, N. S., Castillo-Rodríguez, J. C., Gómez, R., Pérez Hernández, R., & Santolalla-Vargas, C. E. (2020). Preparation and characterization of the polycrystalline material Zn₅(OH)₆(CO₃)₂. Determination of the active species in oxide-reduction processes. Fuel, 281, Artículo 118471. https://doi.org/10.1016/j.fuel.2020.118471

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title = "Preparation and characterization of the polycrystalline material Zn5(OH)6(CO3)2. Determination of the active species in oxide-reduction processes",

abstract = "The aim of this work is study the optical, structural, textural and morphological properties of hydrozincite (Zn5(OH)6(CO3)2). The semiconductor has been employed as photocatalytic support and has proved to be active in both oxidation and reduction processes. In this work is demonstrated that the photocatalytic activity of the bare material can be improved at suitable experimental conditions. The photocatalytic activity of hydrozincite was assessed in phenol oxidation and H2 production. The mineralization percentage of phenol at 6 h was 40% while the highest rate constant of H2 production was 2326 μmol g−1h−1. TEM studies point to the high photocatalytic performance of hydrozincite in oxide-reduction processes is principally attributed to the formation of a polycrystalline material. Additionally, the active species participating in oxide-reduction reactions were followed ([rad]OH, [rad]O2-, h+) by fluorescence and UV–Vis spectroscopy.",

keywords = "H production, Hydrozincite, Phenol degradation, Photocatalysis, Zinc",

author = "F. Tzompantzi and C. Tzompantzi-Flores and Portillo-V{\'e}lez, {N. S.} and Castillo-Rodr{\'i}guez, {J. C.} and R. G{\'o}mez and {P{\'e}rez Hern{\'a}ndez}, Ra{\'u}l and Santolalla-Vargas, {C. E.}",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = dec,

day = "1",

doi = "10.1016/j.fuel.2020.118471",

language = "Ingl{\'e}s",

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AU - Tzompantzi, F.

AU - Tzompantzi-Flores, C.

AU - Portillo-Vélez, N. S.

AU - Castillo-Rodríguez, J. C.

AU - Gómez, R.

AU - Pérez Hernández, Raúl

AU - Santolalla-Vargas, C. E.

PY - 2020/12/1

Y1 - 2020/12/1

N2 - The aim of this work is study the optical, structural, textural and morphological properties of hydrozincite (Zn5(OH)6(CO3)2). The semiconductor has been employed as photocatalytic support and has proved to be active in both oxidation and reduction processes. In this work is demonstrated that the photocatalytic activity of the bare material can be improved at suitable experimental conditions. The photocatalytic activity of hydrozincite was assessed in phenol oxidation and H2 production. The mineralization percentage of phenol at 6 h was 40% while the highest rate constant of H2 production was 2326 μmol g−1h−1. TEM studies point to the high photocatalytic performance of hydrozincite in oxide-reduction processes is principally attributed to the formation of a polycrystalline material. Additionally, the active species participating in oxide-reduction reactions were followed ([rad]OH, [rad]O2-, h+) by fluorescence and UV–Vis spectroscopy.

AB - The aim of this work is study the optical, structural, textural and morphological properties of hydrozincite (Zn5(OH)6(CO3)2). The semiconductor has been employed as photocatalytic support and has proved to be active in both oxidation and reduction processes. In this work is demonstrated that the photocatalytic activity of the bare material can be improved at suitable experimental conditions. The photocatalytic activity of hydrozincite was assessed in phenol oxidation and H2 production. The mineralization percentage of phenol at 6 h was 40% while the highest rate constant of H2 production was 2326 μmol g−1h−1. TEM studies point to the high photocatalytic performance of hydrozincite in oxide-reduction processes is principally attributed to the formation of a polycrystalline material. Additionally, the active species participating in oxide-reduction reactions were followed ([rad]OH, [rad]O2-, h+) by fluorescence and UV–Vis spectroscopy.

KW - H production

KW - Hydrozincite

KW - Phenol degradation

KW - Photocatalysis

KW - Zinc

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