کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7147045 1462091 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Direct growth of titania nanotubes on plastic substrates and their application to flexible gas sensors
ترجمه فارسی عنوان
رشد مستقیم نانولوله های تیتانی بر روی بسترهای پلاستیکی و کاربرد آنها در حسگرهای انعطاف پذیر گاز
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی
Titania nanotubes (TNTs) were directly synthesized on titanium thin-film deposited on plastic substrates by electrochemical anodization in ethylene glycol (EG)-based electrolyte containing ammonium fluoride (NH4F) and water (H2O). The effect of various anodization conditions such as growth time, H2O content in electrolyte, anodization voltage, and electrolyte temperature on the morphologies of resultant TNTs was investigated. It was found that the addition of moderate amount of H2O in electrolyte and subsequent HF treatment were beneficial to the formation of micrometer-long TNTs with open and regular tubular surfaces. After transition from amorphous to anatase phase by thermal annealing at 350 °C, the TNTs were employed as flexible chemoresistive sensors for detecting carbon monoxide (CO) and ammonia (NH3) gases. The gas sensing performance of the flexible TNT sensors was characterized by measuring the changes in electrical current due to exposure to test gases and the corresponding gas responses. The sensor responses were considerably stable and reversible even under repetitive gas exposure at different concentrations. In addition, the gas responses were also found to be linear with respect to different concentrations of test gases and fairly good even at relatively low concentration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 199, August 2014, Pages 361-368
نویسندگان
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