# Expression of concern: d-Penicillamine functionalized dendritic fibrous nanosilica (DFNS-DPA): synthesise and its application as an innovative advanced nanomaterial towards sensitive quantification of ractopamine

**Authors:** Milad Baghal Behyar, Nasrin Shadjou

PMC · DOI: 10.1039/d6ra90028c · RSC Advances · 2026-03-19

## TL;DR

This paper expresses concern about a study on a nanomaterial used for detecting ractopamine.

## Contribution

The paper highlights potential issues with the original study's methodology or findings.

## Key findings

- The original paper's claims about DFNS-DPA's effectiveness may be questionable.
- There are concerns about the reliability of the reported results.

## Abstract

Expression of concern for ‘d-Penicillamine functionalized dendritic fibrous nanosilica (DFNS-DPA): synthesise and its application as an innovative advanced nanomaterial towards sensitive quantification of ractopamine’ by Milad Baghal Behyar and Nasrin Shadjou, RSC Adv., 2021, 11, 30206–30214, https://doi.org/10.1039/D1RA05655G.

## Linked entities

- **Chemicals:** d-Penicillamine (PubChem CID 5852), ractopamine (PubChem CID 56052)

## Full-text entities

- **Chemicals:** ractopamine (MESH:C060897), DFNS-DPA (-), d-Penicillamine (MESH:D010396)

## Full text

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Source: https://tomesphere.com/paper/PMC13001025