Study of Chitosan-Stabilized Ti3C2Tx MXene for Ultrasensitive and Interference-Free Detection of Gaseous H2O2

• DOI: 10.1021/acsami.3c05314
• Publication Date: 2023-06-23T09:08:28Z
• Authors: Jelena Isailović; Ana Oberlintner; Uroš Novak; Matjaž Finšgar; Filipa M. Oliveira; Jan Paštika; Zdeněk Sofer; Nikola Tasić; Rui Gusmão; Samo B. Hočevar
• Keywords: Ferrocyanide; Acrylic acid

The development of sensitive, selective, and reliable gaseous hydrogen peroxide (H2O2) sensors operating at room temperature still represents a remaining challenge. In this work, we have investigated combined the advantageous properties two-dimensional Ti3C2Tx MXene material that exhibits large specific surface area high activity, with favorable conducting stabilizing chitosan. MXene-chitosan membrane was deposited on ferrocyanide-modified screen-printed working carbon electrode, followed by applying poly(acrylic acid) as an electrolyte accumulation medium for H2O2. sensor showed highly sensitive selective electroanalytical performance detecting trace concentrations H2O2 very low detection limit 4 μg m-3 (4 ppbv), linear response in studied concentration range 0.5-30.0 mg m-3, good reproducibility RSD 1.3%. applicability demonstrated point-of-interest during real hair bleaching process 9 12% solution.