Effect of high-energy milling on the structure, some physicochemical and photocatalytic properties of clinoptilolite

[Display omitted] •Different affect of dry and wet milling on clinoptilolite structure was revealed.•More accessible meso-macroporous structure is formed after high-energy ball milling.•Mechanochemical treatment enriches surface with iron-oxygen species as photocatalytic sites.•Milled in air samples...

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Bibliographic Details
Published in:Applied catalysis. A, General General, 2021-01, Vol.610, p.117930, Article 117930
Main Authors: Sydorchuk, V., Vasylechko, V., Khyzhun, O., Gryshchouk, G., Khalameida, S., Vasylechko, L.
Format: Article
Language:English
Subjects:
Catalytic activity
Clinoptilolite
Crystal structure
Crystallinity
Low temperature
Mechanical alloying
Milling
Oxygen enrichment
Photocatalysis
Photodegradation
Porous structure
Rhodamine
X ray photoelectron spectroscopy
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Summary:[Display omitted] •Different affect of dry and wet milling on clinoptilolite structure was revealed.•More accessible meso-macroporous structure is formed after high-energy ball milling.•Mechanochemical treatment enriches surface with iron-oxygen species as photocatalytic sites.•Milled in air samples show improved photocatalytic activity for rhodamine B degradation. The Natural and H-form of clinoptilolite were subjected to mechanochemical treatment in water and in air. Initial and milled samples were studied using a combination of XRD, FTIR, XPS/UV–vis spectroscopies, SEM and low-temperature nitrogen ad-/desorption. Dry milling leads to the destruction of the crystalline structure, whilst milling in water partially maintains the crystalline structure with a meso- macroporous structure formed in both cases. Surface was enriched with impurity iron, whose oxygen-containing species served as photocatalytic centres. The milled samples exhibit an improved photocatalytic activity in the process of rhodamine B degradation under visible light.
ISSN:0926-860X
1873-3875
DOI:10.1016/j.apcata.2020.117930