Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2021 Nov 8;11(57):35988-35993.
doi: 10.1039/d1ra05848g. eCollection 2021 Nov 4.

La(OH)3 nanoparticles immobilized on Fe3O4@chitosan composites as novel magnetic nanocatalysts for sonochemical oxidation of benzyl alcohol to benzaldehyde

Fereshteh Javidfar  1 , Manoochehr Fadaeian  1 , Javad Safaei Ghomi  1   2
Affiliations

La(OH)3 nanoparticles immobilized on Fe3O4@chitosan composites as novel magnetic nanocatalysts for sonochemical oxidation of benzyl alcohol to benzaldehyde

Fereshteh Javidfar et al. RSC Adv. .

Abstract

This work introduces an eco-friendly method for immobilization of La(OH)3 nanoparticles on modified Fe3O4 nanoparticles. The structural and morphological characteristics of the nanocatalyst were determined by various analytical techniques including, FT-IR, EDS, FESEM, VSM and XRD. The catalytic efficiency of the Fe3O4@Cs/La(OH)3 composite as a heterogeneous nanocatalyst was evaluated by selective oxidation of benzylic alcohols to aldehydes. The optimum reaction conditions including time, temperature, nanocatalyst dosage, and solvent were investigated for ultrasound-assisted oxidation processes. Furthermore, the magnetic nanocatalyst was recovered up to seven times without considerable activity loss. Furthermore, the proposed nanocomposite had a remarkable effect on reducing the reaction time and enhancing the yield.

PubMed Disclaimer

Conflict of interest statement

The authors stated that they had no financial or personal interest in preparing the material reported in this article.

Figures

Scheme 1
Scheme 1. Chitosan structure.
Fig. 1
Fig. 1. FT-IR spectra of (a) pure CS, (b) Fe3O4@CS, (c) Fe3O4@CS/La(OH)3 composites.
Fig. 2
Fig. 2. EDS spectrum of Fe3O4@CS/La(OH)3.
Fig. 3
Fig. 3. XRD patterns of (a) La(OH)3, (b) Fe3O4, and (c) Fe3O4@CS/La(OH)3.
Fig. 4
Fig. 4. FE-SEM images of the Fe3O4@CS/La(OH)3 catalyst (a–c).
Fig. 5
Fig. 5. VSM (a) Fe3O4, (b) Fe3O4@CS/La(OH)3 nanocomposites.
Scheme 2
Scheme 2. A possible reaction mechanism.
Fig. 6
Fig. 6. Recyclability of sonocatalyst.
Fig. 7
Fig. 7. Comparison of FE-SEM of the prepared Fe3O4@CS/La(OH)3 (a) before and (b) after 7 runs.
Fig. 8
Fig. 8. Comparison of XRD of the prepared Fe3O4@CS/La(OH)3 (a) before and (b) after 7 runs.
See this image and copyright information in PMC

References

    1. Parvanak Boroujeni K. Tohidiyan Z. Shahsanaei H. Lorigooini Z. Fadavid A. Inorg. Chem. Commun. 2020;122:108–206. doi: 10.1016/j.inoche.2020.108206. - DOI
    1. Rangraz Y. Nemati F. Elhampour A. J. Colloid Interface Sci. 2018;509:485–494. doi: 10.1016/j.jcis.2017.09.034. - DOI - PubMed
    1. Khodamorady M. Bahrami K. ChemistrySelect. 2019;4:8183–8194. doi: 10.1002/slct.201901497. - DOI
    1. Chevallier M. L. Dessolin S. Serres F. Bruyas L. Chatel G. Molecules. 2019;24:4157. doi: 10.3390/molecules24224157. - DOI - PMC - PubMed
    1. Nasrollahzadeh M. Shafiei N. Nezafat Z. Sadat Soheili Bidgoli N. Soleimani F. Carbohydr. Polym. 2020;241:116–353. doi: 10.1016/j.carbpol.2020.116353. - DOI - PubMed