Sulfonated reduced graphene oxide-doped polypyrrole film prepared by in situ electropolymerization and coating in fabrication of ammonia gas sensor for exhaled breath analysis of patients with kidney failure.

• Tác giả: Naader Alizadeh, Mahsa Amiri, Fatemeh Ferdosi
• Ngôn ngữ: eng
• Thông tin xuất bản: Austria : Mikrochimica acta , 2025
• Bộ sưu tập: NCBI
• ID: 696683

Tóm tắt

Detection of the level of ammonia gas in exhaled breath provides non-invasive and fast diagnosis of kidney failure. Here, we fabricated room temperature and sensitive chemiresistive ammonia gas sensor by in situ electropolymerization and deposition of polypyrrole/sulfonated graphene oxide (PPy/SRGO) on/between gold interdigitated electrodes (Au-IDEs). The prepared sensors were characterized by using field emission scanning electron microscopy (FESEM) and Fourier transform infrared (FT-IR). The fabricated ammonia gas sensor was tested at different operating temperatures (26-50°C) and we selected room temperature for simplifying operation (26°C). At this temperature, the sensor showed two linear ranges of 5-40 ppb (R