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Volume 46 All articles Published: 4 May 2023 Article ID 0093
For the first time, layered double hydroxides (LDHs) with Zn:Al in molar ratio 1:1, intercalated with sulphate and alkali metal cations (Li$^+$, Na$^+$, K$^+$), were synthesized and characterized. The syntheses of Zn/Al-SO$_4$-K was performed by precipitation with increasing pH when the KOH solution was slowly added to acid mixed solutions of ZnSO$_4$, Al$_2$(SO$_4$)$_3$ and K$_2$SO$_4$, with Zn:Al:K in molar ratios of 0.5:0.5:0.167, at 90°C under the dynamic flow of N$_2$. In the exchange reactions, aqueous LDH dispersions were stirred with an excess of Li$_2$SO$_4$ or Na$_2$SO$_4$ for 96 h at room temperature under N$_2$ flow. All the obtained materials were characterized by X-ray diffraction, Fourier transform infrared, scanning electron microscopy and energy dispersive spectroscopy and inductively coupled plasma-optical emission spectrometry analyses. After the reactions, alkali metal cations were exchanged, keeping sulphate constant, showing that this new class of LDHs can exchange cations and has the potential for new applications.
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Bulletin of Materials Science
Volume 46, 2023
All articles
Continuous Article Publishing mode
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Bulletin of Materials Science | News
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Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020 -
Editorial Note on Continuous Article Publication
Posted on July 25, 2019Click here for Editorial Note on CAP Mode
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