1403/01/10
حسین میلانی مقدم

حسین میلانی مقدم

مرتبه علمی: استاد
ارکید:
تحصیلات: دکترای تخصصی
اسکاپوس:
دانشکده: دانشکده علوم پایه
نشانی:
تلفن: 9378208177

مشخصات پژوهش

عنوان
Characterization and gas sensing properties of PPy–Zn2SnO4 nanocomposite with excellent long‑term stability
نوع پژوهش
JournalPaper
کلیدواژه‌ها
Polypyrrole, Zn2SnO4 nanoparticles, Nanocomposite, Ethanol, Gas sensing
سال
2019
مجله Journal of Materials Science: Materials in Electronics
شناسه DOI
پژوهشگران Seyede Azadeh Hejazi Juybari ، Hossain Milani Moghaddam

چکیده

Polypyrrole (PPy)–Zn2SnO4 nanocomposites have been prepared using dodecylbenzene sulfonic acid as a dopant by chemical oxidative polymerization for different weight percentages of Zn2SnO4 nanoparticles (0–20 wt%). The physicochemical characterization confirmed well-formed DBSA doped PPy–Zn2SnO4 nanocomposites with globule—like morphology and high porosity. Moreover, the UV–Vis spectrum revealed a blue shift for nanocomposites with respect to pure PPy, reflecting the modified electronic states as a result of effective interaction between PPy and Zn2SnO4 nanoparticles. All of the synthesized nanocomposites had a good thermal stability below 200 °C (< 4% weight loss). We applied the synthesized nanocomposites as a resistive sensor to detect the ethanol vapor. The results demonstrate that PPy–Zn2SnO4 (10 wt%) nanocomposite has the highest DC conductivity and response at room temperature. Also, it shows a linear response, appropriate recovery time and reproducibility. The excellent long-term stability (about 30% less than the initial experiment) after 7 months is observed for the sensor based on PPy–Zn2SnO4 (10 wt%), which makes it convenient for practical applications.