Zn-Al Layered Double Hydroxide Thin Film Fabricated by the Sputtering Method and Aqueous Solution Treatment

Jaehwan Shin,Jeongsoo Hong,Kyunghwan Kim

doi:10.3390/coatings10070669

Jaehwan Shin, Jeongsoo Hong + Show 1 more

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https://doi.org/10.3390/coatings10070669

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Journal: Coatings	Publication Date: Jul 13, 2020
Citations: 8	License type: CC BY 4.0

Affiliation: Gachon University

Abstract

Zn-Al layered double hydroxides (LDHs) were synthesized herein via a simple process. First, Al-doped ZnO film was deposited onto a glass substrate using the facing target sputtering system. Successful synthesis of the Zn–Al LDH was achieved via a treatment process using an aqueous solution which contains NO3− anions. X-ray diffraction analysis confirmed that it was consistent with the previous Zn–Al LDH synthesis experiment data, and the calculated d-value was 9.1 Å. Scanning electron microscopy observations revealed that the as-synthesized sample had a plate-like structure.

Highlights

Layered double hydroxides 10, x FOR PEERREVIEW (LDHs) comprise anions that are interchangeable with different2 of metal cations of M2+ /M3+ with an octahedral brucite structure [1]
In the case of the Al doped ZnO (AZO) thin films, the (002) peak was observed at 34.5◦ (JCPDS 36-1451); all the samples treated with the solution with different molar concentrations exhibited the (003) peak at approximately 10◦
Still showed the (002) peak, which disappeared from the other samples. This result means that the high molar concentration of the NO3 − solution promoted a reaction with the AZO thin film owing to the increase in the number of NO3 − ions, leading to the reduction in the (002) peak of the host layer

Summary

Introduction

Layered double hydroxides 10, x FOR PEER. REVIEW (LDHs) comprise anions that are interchangeable with different of metal cations of M2+ /M3+ with an octahedral brucite structure [1]. LDH exhibits to Al doped ZnO (AZO). Host layer of AZO is inserted present, between the organic decomposition reaction occurs strong binding in the XY and the anions floors are exchanged owing to viaweak the photocatalytic ZnO,[2]. AndUsing the band can be controlled usingstudied. UV irradiation binding forcesreaction betweenoflayers theseenergy characteristics, LDH is being as [15]. Applied to the field of photocatalysts, the wide of Zn–Al. LDH can expected anWhen anionic exchange agent, catalyst, photocatalyst, andabsorbance for hydrogen production andbeCO

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