Next Article in Journal
Silver–Chitosan Nanocomposites for Biomedical Application: Design, Synthesis and Antimicrobial Efficiency
Previous Article in Journal
Towards the Development of Sustainable Antimicrobial Surface Coatings
Font Type:
Arial Georgia Verdana
Font Size:
Aa Aa Aa
Line Spacing:
Column Width:

A Chimie Douce Route to Layered Double Hydroxides †

Institute of Chemistry, Vilnius University, Naugarduko 24, LT-03225 Vilnius, Lithuania
Author to whom correspondence should be addressed.
Presented at the International Conference EcoBalt 2023 “Chemicals & Environment”, Tallinn, Estonia, 9–11 October 2023.
Proceedings 2023, 92(1), 46;
Published: 24 November 2023
(This article belongs to the Proceedings of International Conference EcoBalt 2023 "Chemicals & Environment")
Recently, layered double hydroxides (LDHs) have attracted substantial attention due to their wide range of important application areas, e.g., catalysis, photochemistry, biomedical science and the environment [1,2]. LDHs can be fabricated through different synthesis methods. The most common preparation techniques are co-precipitation [3] and anion exchange [4]. The aim of this study is to show the advantages of the Chimie Douce route to LDHs. The indirect sol-gel synthesis route for the preparation of LDHs was recently developed and suggested [5]. Synthesized precursor gels were converted to mixed metal oxides (MMOs) by heating the gels at 650 °C. The LDHs were fabricated by reconstruction of MMOs in water at 80 °C. In this study, the co-precipitation and novel indirect sol-gel synthesis techniques for the preparation of Mg-Al LDHs were compared and luminescent properties have been investigated. The peculiarities of the intercalation of organic anions to the LDH structures were also studied. In conclusion, the proposed sol-gel synthesis route for LDHs shows some benefits over the co-precipitation method such as simplicity, high homogeneity and good crystallinity of the end synthesis products, effectiveness, cost efficiency and suitability for different systems. It was also demonstrated that the luminescence of lanthanide element in the Mg3Al1−xREx could be induced by intercalation of organic reagents to the LDH structure. The Mg3Al LDH coatings have also been successfully fabricated using the same sol-gel processing route.

Author Contributions

Conceptualization, A.K.; methodology, A.K. and D.S.; formal analysis, D.S.; investigation, D.S.; writing—original draft preparation, A.K.; writing—review and editing, A.K. All authors have read and agreed to the published version of the manuscript.


This research received no external funding.

Institutional Review Board Statement

Not applicable.

Informed Consent Statement

Informed consent was obtained from all subjects involved in the study.

Data Availability Statement

Not applicable.


We would like to thank A. Smalenskaite for assistance and discussions.

Conflicts of Interest

The authors declare no conflict of interest.


  1. Mohanty, U.A.; Sahoo, D.P.; Paramanik, L.; Parida, K. A critical review on layered double hydroxide (LDH)-derived functional nanomaterials as potential and sustainable photocatalysts. Sustain. Energy Fuels 2023, 7, 1145–1186. [Google Scholar] [CrossRef]
  2. Constantino, V.R.L.; Figueiredo, M.P.; Magri, V.R.; Eulalio, D.; Cunha, V.R.R.; Alcantara, A.C.S.; Perotti, G.F. Biomaterials Based on Organic Polymers and Layered Double Hydroxides Nanocomposites: Drug Delivery and Tissue Engineering. Pharmaceutics 2023, 15, 413. [Google Scholar] [CrossRef] [PubMed]
  3. Theiss, F.L.; Ayoko, G.A.; Frost, R.L. Synthesis of layered double hydroxides containing Mg2+, Zn2+, Ca2+ and Al3+ layer cations by co-precipitation methods-A review. Appl. Surf. Sci. 2016, 383, 200–213. [Google Scholar] [CrossRef]
  4. Kameda, T.; Takaizumi, C.; Kumagai, S.; Saito, Y.; Yoshioka, T. Preparation of Zn-Al layered double hydroxide intercalated with carboxymethyl-beta-cyclodextrin by anion exchange method and its Ni2+ adsorption property. Soft Mater. 2020, 19, 139–147. [Google Scholar] [CrossRef]
  5. Sokol, D.; Salak, A.N.; Ferreira, M.G.S.; Beganskiene, A.; Kareiva, A. Bi-substituted Mg3Al-CO3 layered double hydroxides. J. Sol-Gel Sci. Technol. 2018, 85, 221–230. [Google Scholar] [CrossRef]
Disclaimer/Publisher’s Note: The statements, opinions and data contained in all publications are solely those of the individual author(s) and contributor(s) and not of MDPI and/or the editor(s). MDPI and/or the editor(s) disclaim responsibility for any injury to people or property resulting from any ideas, methods, instructions or products referred to in the content.

Share and Cite

MDPI and ACS Style

Sokol, D.; Kareiva, A. A Chimie Douce Route to Layered Double Hydroxides. Proceedings 2023, 92, 46.

AMA Style

Sokol D, Kareiva A. A Chimie Douce Route to Layered Double Hydroxides. Proceedings. 2023; 92(1):46.

Chicago/Turabian Style

Sokol, Denis, and Aivaras Kareiva. 2023. "A Chimie Douce Route to Layered Double Hydroxides" Proceedings 92, no. 1: 46.

Article Metrics

Back to TopTop