najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2016-7-4-732-739najo-1352Research ArticleСтатьиPolyaniline-Titanium dioxide composite as humidity sensor at room temperaturePolyaniline-Titanium dioxide composite as humidity sensor at room temperatureKotreshS.KotreshS.

Department of PG Studies and Research in Physics

Chitradurga 577501

Department of PG Studies and Research in Physics

Chitradurga 577501

RavikiranY. T.RavikiranY. T.

Department of PG Studies and Research in Physics

Chitradurga 577501

Department of PG Studies and Research in Physics

Chitradurga 577501

ytrcta@gmail.comRaj PrakashN. G.Raj PrakashN. G.

Department of Physics

Shivamogga 577204

Department of Physics

Shivamogga 577204

Vijaya KumariS. C.Vijaya KumariS. C.

Department of Physics

Chitradurga 577501

Department of Physics

Chitradurga 577501

Government Science CollegeGovernment Science CollegeJNN College of EngineeringJNN College of EngineeringSJM College of Arts, Science and CommerceSJM College of Arts, Science and Commerce20162208202574732739Copyright © Kotresh S., Ravikiran Y.T., Raj Prakash N.G., Vijaya Kumari S.C., 20252025Kotresh S., Ravikiran Y.T., Raj Prakash N.G., Vijaya Kumari S.C.Kotresh S., Ravikiran Y.T., Raj Prakash N.G., Vijaya Kumari S.C.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/1352

In the present work, Polyaniline (PANI) and Polyaniline-Titanium dioxide (PANI-TiO2) composite have been synthesized separately by chemical polymerization of aniline without/with TiO2. Characteristic absorption bands of PANI and TiO2 in the composite were confirmed by FT-IR studies, indicating the interaction of PANI with TiO2. Comparative study of XRD patterns of PANI and the composite confirmed superficial deposition of PANI on TiO2 and the average size of the composite particle was found to be 25 nm. The aggregated granular porous morphology of the composite was confirmed by its SEM image. The composite’s sensing response to humidity at room temperature was tested and was found to be 84.21 % in the range 25 % – 95 % RH. The response and recovery time of the composite at 95 % RH were measured to be 60s and 100s respectively and its sensing stability over a period of one month was also confirmed.

In the present work, Polyaniline (PANI) and Polyaniline-Titanium dioxide (PANI-TiO2) composite have been synthesized separately by chemical polymerization of aniline without/with TiO2. Characteristic absorption bands of PANI and TiO2 in the composite were confirmed by FT-IR studies, indicating the interaction of PANI with TiO2. Comparative study of XRD patterns of PANI and the composite confirmed superficial deposition of PANI on TiO2 and the average size of the composite particle was found to be 25 nm. The aggregated granular porous morphology of the composite was confirmed by its SEM image. The composite’s sensing response to humidity at room temperature was tested and was found to be 84.21 % in the range 25 % – 95 % RH. The response and recovery time of the composite at 95 % RH were measured to be 60s and 100s respectively and its sensing stability over a period of one month was also confirmed.

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The authors declare that there are no conflicts of interest present.