Sonochemical synthesis of PEDOT:PSS intercalated ammonium vanadate nanofiber composite for room-temperature NH3 sensing
- Title
- Sonochemical synthesis of PEDOT:PSS intercalated ammonium vanadate nanofiber composite for room-temperature NH3 sensing
- Author
- 김현우
- Keywords
- PEDOT:PSS; Ammonium vanadate; Nanofiber; Composite; Sonochemical; Method; NH3 sensor
- Issue Date
- 2021-01
- Publisher
- ELSEVIER SCIENCE SA
- Citation
- SENSORS AND ACTUATORS B-CHEMICAL, v. 327, article no. 128924, Page. 1-12
- Abstract
- Until now, the synthesis of cationic vanadate nanofibers/conducting polymers composites have required tem-plate such as surfactants and electrochemical equipment for the coating of conducting polymers. The cationic vanadate nanofibers have been synthesized by complex methods to overcome the low electrical conductivity of bulk vanadium oxide (V2O5). However, in some cases a reaction time of at least 10 h is needed. In this study, for the first time, Poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS) intercalated ammonium vanadate ((NH4)(2)V6O16 center dot 1.5H(2)O) nanofiber (AVNF) composites were synthesized in 4 h using a simple sono-chemical method for NH3 gas sensing studies. In addition, chemical composition, crystal morphologies and structures changes of the nanofiber composites according to the intercalation of ammonium cation and PSS: PEDOT were investigated. The NH3 gas sensing results reveal that the fabricated PEDOT:PSS-AVNF composite sensor had higher sensitivity and shorter response time to NH3 gas than V2O5, PEDOT, AVNF, and PEDOT-AVNF sensors at room temperature (24 degrees C). The enhanced NH3 sensitivity was mainly attributed to enhanced electrical conductivity (4.5 x 10(-2) S. cm(-1)), high surface area, and p-p heterojunctions formed between the PEDOT:PSS and AVNF. The results obtained in this research demonstrate the beneficial effects of intercalating PEDOT:PSS in AVNF for NH3 gas sensing.
- URI
- https://www.sciencedirect.com/science/article/pii/S0925400520312715?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/175255
- ISSN
- 0925-4005
- DOI
- 10.1016/j.snb.2020.128924
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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