Hierarchical ZnO/zeolite nanostructures: Synthesis, growth mechanism and hydrogen detection

Ahsanulhaq Qurashi; Mouheddin Alhaffar; Zain H. Yamani

doi:10.1039/c4ra15497e

Hierarchical ZnO/zeolite nanostructures: Synthesis, growth mechanism and hydrogen detection

Ahsanulhaq Qurashi, Mouheddin Alhaffar, Zain H. Yamani

Chemistry

King Fahd University for Petroleum and Minerals (KFUPM)

Research output: Contribution to journal › Article › peer-review

13 Scopus citations

Abstract

An improved hydrothermal method has been contrived for the synthesis of highly uniform, ordered, and monodispersed zeolite nanocrystals. An efficient impregnation of zinc on the outer surface of zeolite was carried out using aqueous solution at room temperature followed by high temperature calcination to form an interpenetrating network of hierarchical ZnO/zeolite-nanostructured assembly. The hierarchical structures offer high surface area, a porous structural network, a stimulated surface for catalytic and redox reactions, and better electron transport properties. Morphological and comprehensive structural analysis was carried out by advanced techniques including XRD, FESEM, TEM, STEM-EDS, BET and XPS, respectively. A plausible growth mechanism has been proposed for the formation of zeolite and ZnO/zeolite hierarchical nanocrystals. The hydrogen gas sensor made with these ZnO/zeolite hierarchical nanocrystals exhibited a very fast response of ∼10 s with slow recovery.

Original language	British English
Pages (from-to)	22570-22577
Number of pages	8
Journal	RSC Advances
Volume	5
Issue number	29
DOIs	https://doi.org/10.1039/c4ra15497e
State	Published - 2015

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title = "Hierarchical ZnO/zeolite nanostructures: Synthesis, growth mechanism and hydrogen detection",

abstract = "An improved hydrothermal method has been contrived for the synthesis of highly uniform, ordered, and monodispersed zeolite nanocrystals. An efficient impregnation of zinc on the outer surface of zeolite was carried out using aqueous solution at room temperature followed by high temperature calcination to form an interpenetrating network of hierarchical ZnO/zeolite-nanostructured assembly. The hierarchical structures offer high surface area, a porous structural network, a stimulated surface for catalytic and redox reactions, and better electron transport properties. Morphological and comprehensive structural analysis was carried out by advanced techniques including XRD, FESEM, TEM, STEM-EDS, BET and XPS, respectively. A plausible growth mechanism has been proposed for the formation of zeolite and ZnO/zeolite hierarchical nanocrystals. The hydrogen gas sensor made with these ZnO/zeolite hierarchical nanocrystals exhibited a very fast response of ∼10 s with slow recovery.",

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T1 - Hierarchical ZnO/zeolite nanostructures

T2 - Synthesis, growth mechanism and hydrogen detection

AU - Qurashi, Ahsanulhaq

AU - Alhaffar, Mouheddin

AU - Yamani, Zain H.

PY - 2015

Y1 - 2015

N2 - An improved hydrothermal method has been contrived for the synthesis of highly uniform, ordered, and monodispersed zeolite nanocrystals. An efficient impregnation of zinc on the outer surface of zeolite was carried out using aqueous solution at room temperature followed by high temperature calcination to form an interpenetrating network of hierarchical ZnO/zeolite-nanostructured assembly. The hierarchical structures offer high surface area, a porous structural network, a stimulated surface for catalytic and redox reactions, and better electron transport properties. Morphological and comprehensive structural analysis was carried out by advanced techniques including XRD, FESEM, TEM, STEM-EDS, BET and XPS, respectively. A plausible growth mechanism has been proposed for the formation of zeolite and ZnO/zeolite hierarchical nanocrystals. The hydrogen gas sensor made with these ZnO/zeolite hierarchical nanocrystals exhibited a very fast response of ∼10 s with slow recovery.

AB - An improved hydrothermal method has been contrived for the synthesis of highly uniform, ordered, and monodispersed zeolite nanocrystals. An efficient impregnation of zinc on the outer surface of zeolite was carried out using aqueous solution at room temperature followed by high temperature calcination to form an interpenetrating network of hierarchical ZnO/zeolite-nanostructured assembly. The hierarchical structures offer high surface area, a porous structural network, a stimulated surface for catalytic and redox reactions, and better electron transport properties. Morphological and comprehensive structural analysis was carried out by advanced techniques including XRD, FESEM, TEM, STEM-EDS, BET and XPS, respectively. A plausible growth mechanism has been proposed for the formation of zeolite and ZnO/zeolite hierarchical nanocrystals. The hydrogen gas sensor made with these ZnO/zeolite hierarchical nanocrystals exhibited a very fast response of ∼10 s with slow recovery.

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Hierarchical ZnO/zeolite nanostructures: Synthesis, growth mechanism and hydrogen detection

Abstract

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