کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
606337 1454529 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Facile preparation of porous In2TiO5–rutile composite nanotubes by electrospinning and sensitivity enhancement in NO2 gas at room temperature
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی شیمی کلوئیدی و سطحی
پیش نمایش صفحه اول مقاله
Facile preparation of porous In2TiO5–rutile composite nanotubes by electrospinning and sensitivity enhancement in NO2 gas at room temperature
چکیده انگلیسی

Porous In2TiO5–rutile composite nanotubes (IRCNs) were synthesized via a facile one-step synthesis of the electrospinning approach by using tetrabutyl titanate (TBT), indium nitrate, and polyvinylpyrrolidone (PVP) as a soft-template followed by two-step calcination. The porous composite nanotubes with a bigger surface area have single-crystalline rutile with (1 1 0) crystal plane, and the sensor fabricated by it with a content of 12.5 at% In2TiO5 (IRCN2) has shown a response of 4.04 to 100 ppm NO2 at room temperature (RT), which was 20 times as high as the pure In2TiO5 sensor under the same conditions. The IRCN2 sensor had excellent selectivity compared with other gas species such as CO, H2, NH3, H2S and CH4 at RT. The enhanced sensing properties were attributed to the synergy of integrated In2TiO5 and rutile, heterojunction of single-crystal, and its nanotubular structure. Hence, the IRCN2 sensor has a potential application for the development of novel gas sensors at RT.

Porous In2TiO5–rutile composite nanotubes (IRCNs) were synthesized using electrospinning approach followed by two-stages calcination. The IRCN2 gas sensors possessed higher stability, selectivity, reversibility and fast response/recovery at room temperature. The enhanced sensing properties were attributed to the synergy of integrated In2TiO5 and rutile, hetero-junction of single-crystal and nanotubular structure.Figure optionsDownload high-quality image (174 K)Download as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Colloid and Interface Science - Volume 466, 15 March 2016, Pages 72–79
نویسندگان
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