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The fabrication of TiO2-supported clinoptilolite via F- contained hydrothermal etching and a resultant highly energetic {001} facet for the enhancement of its photocatalytic activity.

ABSTRACT: TiO2-supported clinoptilolite (TiO2/CP) was synthesized in the presence of F- ions. Various characterizations demonstrated that the particle size of loaded TiO2 increased linearly with an increase in the temperature and concentration of F- ions. In particular, the additive F- ions were favored to produce the mutually independent co-exposed {001} and {101} facets of loaded TiO2, while TiO2/CPs synthesized in the absence of F- ions were dominated by the thermodynamically stable {101} facet. As photocatalysts for the removal of crystal violet or methyl orange dyes under UV-irradiation in aqueous solutions, TiO2/CPs (ACP6) synthesized in the presence of F- ions significantly improved the degradation efficiency, as compared to ACP3 obtained in the absence of F- ions. These results elucidated that the highly energetic {001} exposed facet, large particle size and fine dispersion of loaded TiO2 in TiO2/CP accounts for its best photocatalytic performance. The effected mechanism of operational parameters on the degradation performances is proposed.

SUBMITTER: Gul A 

PROVIDER: S-EPMC9033245 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature

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The fabrication of TiO<sub>2</sub>-supported clinoptilolite <i>via</i> F<sup>-</sup> contained hydrothermal etching and a resultant highly energetic {001} facet for the enhancement of its photocatalytic activity.

Gul Anadil A   Ullah Raza R   Sun Jihong J   Munir Tallat T   Bai Shiyang S  

RSC advances 20210518 29

TiO<sub>2</sub>-supported clinoptilolite (TiO<sub>2</sub>/CP) was synthesized in the presence of F<sup>-</sup> ions. Various characterizations demonstrated that the particle size of loaded TiO<sub>2</sub> increased linearly with an increase in the temperature and concentration of F<sup>-</sup> ions. In particular, the additive F<sup>-</sup> ions were favored to produce the mutually independent co-exposed {001} and {101} facets of loaded TiO<sub>2</sub>, while TiO<sub>2</sub>/CPs synthesized in t  ...[more]

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