# Expression of concern: Impact of some pyrrolidinium ionic liquids on copper dissolution behavior in acidic environment: experimental, morphological and theoretical insights

## TL;DR

This paper addresses concerns about the impact of pyrrolidinium ionic liquids on copper dissolution in acidic environments.

## Contribution

The study raises an expression of concern regarding previously published findings on copper dissolution behavior.

## Key findings

- An expression of concern is issued for the study's findings.
- The original study explored the effect of pyrrolidinium ionic liquids on copper dissolution.
- The paper highlights the need for further validation of the experimental results.

## Abstract

Expression of concern for ‘Impact of some pyrrolidinium ionic liquids on copper dissolution behavior in acidic environment: experimental, morphological and theoretical insights’ by Emad E. El-Katori and Ashraf S. Abousalem, RSC Adv., 2019, 9, 20760–20777, https://doi.org/10.1039/C9RA03603B.