Glutaraldehyde-Crosslinked Chitosan and Zinc Oxide Coating Reinforced with Polysulfone on Copper as a Platform for Electrochemical Formaldehyde Sensing

Abstract

Formaldehyde monitoring requires electrochemical platforms with stable structures and reliable interfacial responses. This study aimed to prepare and characterize a Cu|CS–GLA/ZnO–PSf composite film on a copper substrate as a platform for further formaldehyde-sensing development. The film was characterized using FTIR, SEM–EDX, XRD, and cyclic voltammetry. FTIR supported the presence of features associated with chitosan, imine, polysulfone, and Zn–O, while SEM–EDX revealed a heterogeneous polymer-rich coating with Zn- and O-containing domains distributed non-uniformly. XRD indicated a predominantly amorphous or poorly crystalline structure. Cyclic voltammetry showed scan-rate-dependent peak separations, with ΔEp increasing from 0.632 to 0.777 V in citrate buffer and from 0.320 to 0.560 V in the ferri/ferrocyanide system, indicating strongly non-ideal interfacial kinetics. Overall, the Cu|CS–GLA/ZnO–PSf interface provides a structurally and electrochemically characterized basis for further formaldehyde-sensing development.

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Volume

14

Issue

2

First Page

165

Last Page

176

Authors

• Anceu Murniati ANM, Universitas Jenderal Achmad YaniFollow
• Rahmat Saputra RS, Universitas Jenderal Achmad YaniFollow
• Arie Hardian AH, Universitas Jenderal Achmad YaniFollow
• Manty Aldilani Ikaningsih MAI, Universitas Jenderal Achmad YaniFollow
• Moh Haifan Haifan, Institut Teknologi IndonesiaFollow

Recommended Citation

Murniati, Anceu ANM; Saputra, Rahmat RS; Hardian, Arie AH; Ikaningsih, Manty Aldilani MAI; and Haifan, Moh Haifan (2026) "Glutaraldehyde-Crosslinked Chitosan and Zinc Oxide Coating Reinforced with Polysulfone on Copper as a Platform for Electrochemical Formaldehyde Sensing," Chimica et Natura Acta: Vol. 14: Iss. 2,165-176.
DOI: https://doi.org/https://doi.org/10.24198/cna.v14.n2.72874
Available at: https://journal.unpad.ac.id/cna/vol14/iss2/5