« Previous AbstractApplicability of PTR-MS in the quality control of saffron    Next AbstractDetermination of natural olive fruit fly pheromone in insect samples by enzyme linked immunoassays »

Anal Chim Acta

Title:		Ion-dipole interaction for selective detection of acetone by perovskite BiFeO(3) chemi-resistive sensor
Author(s):		Neogi S; Ghosh R;
Address:		"CSIR-Central Mechanical Engineering Research Institute (CMERI), Durgapur, 713209, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh, India; Dr. B. C. Roy Polytechnic, Durgapur, 713206, India. CSIR-Central Mechanical Engineering Research Institute (CMERI), Durgapur, 713209, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, Uttar Pradesh, India. Electronic address: r_ghosh@cmeri.res.in"
Journal Title:		Anal Chim Acta
Year:		2022
Volume:		20220331
Issue:
Page Number:		339788 -
DOI:		10.1016/j.aca.2022.339788
ISSN/ISBN:		1873-4324 (Electronic) 0003-2670 (Linking)
Abstract:		"Present study highlights the ion-dipole interaction mechanism in VOC sensing phenomena of sol-gel synthesized BiFeO(3) chemi-resistive sensor using a set of polar (03) and non/less-polar (03) VOCs. The prototype can selectively detect acetone vapor with a maximum response (R) value of 100 +/- 8 at an operating temperature of 350 degrees C. The sensor shows higher response (R(Ethanol): 62, R(Methanol): 60) towards polar VOCs and low response value (R(Toluene): 12, R(Hexane): 8, R(Xylene): 4) for non/less polar VOCs. The variation of sensor response (R) with the dipole moment (mu) of the VOCs shows excellent linearity. The response time decreases exponentially with increase in dipole moment of VOCs. Acetone with highest dipole moment (mu = 2.91 D) shows lowest response time (tau(res) approximately 20 s). The selective nature of the sensor is correlated with the dipole moment of the target VOCs. Quantitative measure on ion-dipole interactions of polar and non/less-polar VOCs with BiFeO(3) chemi-resistive sensor was evaluated and plays the key role to explain the sensing mechanism. Acetone exhibits highest interaction energy (E(i)(- d) = -1.01 x 10(-19) J) among other target vapors, revealing its selective detection by BiFeO(3) chemi-resistive sensor"
Keywords:		*Acetone Calcium Compounds Oxides Titanium *Volatile Organic Compounds BiFeO(3) sensor Dipole moment Ion-dipole interaction Polar VOCs;
Notes:		"MedlineNeogi, Samya Ghosh, Ranajit eng Netherlands 2022/04/28 Anal Chim Acta. 2022 May 8; 1206:339788. doi: 10.1016/j.aca.2022.339788. Epub 2022 Mar 31"