# Expression of concern: Facile route to synthesize Fe3O4@acacia–SO3H nanocomposite as a heterogeneous magnetic system for catalytic applications

## TL;DR

This paper addresses concerns about a previously published study on a magnetic nanocomposite used for catalytic applications.

## Contribution

The paper raises an expression of concern regarding the original study's findings and methodology.

## Key findings

- The original study's claims about the nanocomposite's catalytic performance are under scrutiny.
- Potential issues with the experimental data or interpretation are highlighted.

## Abstract

Expression of concern for ‘Facile route to synthesize Fe3O4@acacia–SO3H nanocomposite as a heterogeneous magnetic system for catalytic applications’ by Reza Taheri-Ledari et al., RSC Adv., 2020, 10, 40055–40067, https://doi.org/10.1039/D0RA07986C.