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Synthesis and characterization of lamellar-like Cu2(OH)3NO3 nanosheets integrated with Mg(OH)2 nanoparticles heterojunction for photocatalytic activity

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Abstract

In this study, the different coloured Mg(OH)2/Cu2(OH)3NO3 nanocomposites were prepared by the facile co-precipitation method. The prepared white Mg(OH)2 (MH), pale light-blue (MC-1), dark-brown (MC-2) and dim-grey (MC-3)-coloured Mg(OH)2/Cu2(OH)3NO3 nanocomposites were analysed by different characterization techniques. The XRD, FTIR and XPS analyses confirm the formation of MH, MC-1, MC-2 and MC-3. The optical properties were analysed via UV-DRS and the band gaps (Eg) of MH, MC-1, MC-2 and MC-3 were estimated to be 4.19, 3.2, 3.27 and 3.34 eV, respectively. The morphology of MH, MC-1 and MC-2 shows nanoparticle, lamellar-like nanosheet and nanoflakes structures. The prepared samples were used to study the photocatalytic degradation of rhodamine B (RhB) and methyl orange (MO) dyes under UV–Visible light. The prepared plane blue MC-1 catalyst achieved higher degradation efficiency (92% for RhB and 95% for MO) than other samples. The Z-scheme charge transfer mechanism was confirmed by scavenger activity.

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Data availability

The datasets used and analysed during the current study are available from the corresponding author on reasonable request.

Abbreviations

AOPs:

Advanced oxidation processes

LMH:

Layered metal hydroxide

LHN:

Layered hydroxyl nitrate

MH:

Pure Mg(OH)2

MC-1:

Pale light-blue-coloured Mg(OH)2/Cu2(OH)3NO3

MC-2:

Dark–brown-coloured Mg(OH)2/Cu2(OH)3NO3

MC-3:

Dim-grey-coloured Mg(OH)2/Cu2(OH)3NO3

RhB:

Rhodamine B

MO:

Methyl orange

EDTA:

Ethylenediaminetetraacetic acid

IPA:

2-Propanol

BQ:

p-Benzoquinone

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Acknowledgments

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Funding

This work was financially supported by Periyar University, Salem, Tamilnadu, India for providing fellowship under URF Grant (Ref. No: PU/AD-3/URF/024981/2018). The co-author G.Ramalingam, Alagappa University, Karaikudi 630003, Tamil Nadu, India, is acknowledged for providing SPARC Grant (Ref. No: MHRD-SPARC/2019/890). Also, this work was supported by National Water and Energy Center, United Arab Emirates University, UAE.

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Authors and Affiliations

  1. Smart Energy Materials Research Laboratory (SEMRL), Department of Energy Science and Technology, Periyar University, Salem, India

    Karthigaimuthu Dharmalingam, Gokulnath Dhanasekaran, Deepak Sekar & Elangovan Thangavel

  2. Department of Physics, PSG College of Arts & Science, Coimbatore, India

    Vijayakumar Gurudevan

  3. Quantum Materials Research Lab (QMRL), Department of Nanoscience and Technology, Alagappa University, Karaikudi, Tamil Nadu, India

    Ramalingam Gopal

  4. Department of Geosciences, College of Science, United Arab Emirates University, Al Ain, 15551, UAE

    Dalal Alshamsi

  5. National Water and Energy Center, United Arab Emirates University, Al Ain, 15551, UAE

    Dalal Alshamsi & Sangaraju Sambasivam

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  1. Karthigaimuthu Dharmalingam
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  2. Vijayakumar Gurudevan
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Contributions

KD conceptualization, methodology, original manuscript drafting and writing; VG formal analysis, investigation and revision; GD Methodology, formal analysis and investigation; DS methodology, formal analysis and investigation; RG formal analysis and investigation and funding acquisition; ET conception and design, writing—original draft preparation revising and Supervision; DA Formal analysis, investigation; SS Conceptualization, analysis, writing.

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Dharmalingam, K., Gurudevan, V., Dhanasekaran, G. et al. Synthesis and characterization of lamellar-like Cu2(OH)3NO3 nanosheets integrated with Mg(OH)2 nanoparticles heterojunction for photocatalytic activity. Journal of Materials Research 39, 231–247 (2024). https://doi.org/10.1557/s43578-023-01218-z

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