Retraction notices

Fabrication of polypyrrole gas sensor for detection of NH3 using an oxidizing agent and pyrrole combinations: Studies and characterizations

Type

Retraction

Notice date

11/18/2025 0:00

Journal

Heliyon

Publisher

Elsevier - Cell Press

Notice DOI

10.1016/j.heliyon.2025.e44186

Original paper DOI

10.1016/j.heliyon.2023.e17611

Reasons

• Concerns/Issues about Referencing/Attributions
• Investigation by Journal/Publisher
• Objections by Author(s)

Matching venue names

Name match only, not an authoritative journal identifier.

• Heliyon