NOx Sensing Properties of Barium Titanate Thin Films

Sharma, Savita; Sharma, Anubha; Tomar, Monika; Puri, Nitin K.; Gupta, Vinay

doi:10.1016/j.proeng.2014.11.347

Cited by 13 publications

(11 citation statements)

References 8 publications

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“…Among these, the sensing of toxic chemical and biochemical is most attractive scientific application to protect the environmental hazardous effect and health care sector from illness [22] . BaO is a semiconductor with optical band‐gap of 3.8 eV and applied widely in the development of LPG sensor, [23] supercapacitor, [24] mefenamic acid sensor, [25] carbon dioxide gas sensor, [26] non‐conventional hexaferrite sensor, [27] NOx sensor [28] and gas sensor [29] . The structural morphology of sensing materials coated on GCE is very important to the development of the electrochemical sensor.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Detection of 2‐Nitrophenol Using a Glassy Carbon Electrode Modified with BaO Nanorods

Alam

Asiri

Rahman

2021

Chemistry An Asian Journal

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Here, an electrochemical detection approach (differential pulse voltammetry) was employed to develop a 2nitrophenol (2-NP) sensor probe using a glassy carbon electrode (GCE) coated by wet-chemically synthesized nanorods (NRs) of BaO. The prepared BaO NRs were characterized by field-emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and powder X-ray diffraction (XRD) analysis. The peak currents by differential pulse voltammetric (DPV) analysis of 2-NP are plotted against the concentration to obtain the calibration curve of the 2-NP detection. It was found to be linear from 1.5 to 9.0 μM, defined as the dynamic range (LDR) for 2-NP detection in phosphate buffer solution. The sensor sensitivity was calculated from the slope of LDR by considering the active surface area of NRs coated on GCE (0.0316 cm 2 ) and found as 17.6 μAμM À 1 cm À 2 . The limit of detection (LOD) was calculated as 0.50 � 0.025 μM from the signal/noise (S/N) ratio of 3. Moreover, the sensor analytical parameters such as reproducibility, long-term performing ability (stability), response time and validity in real environmental samples were found acceptable and to give satisfactory results. The development of a nanomaterial-based electrochemical chemical sensor might be an effective approach to sensor technology to detect carcinogenic and hazardous toxins for environmental safety and healthcare fields in a broad scale.

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Section: Introductionmentioning

confidence: 99%

Electrochemical Detection of 2‐Nitrophenol Using a Glassy Carbon Electrode Modified with BaO Nanorods

Alam

Asiri

Rahman

2021

Chemistry An Asian Journal

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“…Due to the interesting properties of BT, especially the nano‐structured ones, polymers nanocomposites containing BT nanoparticles have been studied using different synthetic polymers to prepare high‐ k flexible materials for different applications such as pyroelectric sensors, nonvolatile memories, and surface acoustic wave devices; the studied polymers included poly(vinylidene fluoride), fluoro‐polydopamine, oligothiophene polymer, polymethylmethacrylate, epoxy; poly(vinylidenefluoride‐ co ‐hexafluoropropylene), and interpenetrating polyurethane polymer.…”

Section: Introductionmentioning

confidence: 99%

Novel cellulose nanofibers/barium titanate nanoparticles nanocomposites and their electrical properties

Hassan

Ali

Salama

et al. 2018

J of Physical Organic Chem

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Green nanocomposite films from cellulose nanofibers/barium titanate (CNF/BT) with high homogeneity were successfully prepared by doping different ratio of BT nanoparticles (2.5 to 25 wt%) into CNF. Scanning electron microscope images showed homogenous distribution of BT in the CNF matrix. Thermogravimetric analysis results showed good thermal stability of the prepared nanocomposites. X‐ray diffraction analysis showed that the tetragonality of BT grains was retained in the composite samples. Addition of BT nanoparticles to CNF resulted in decreasing the tensile strength properties of the films. The dielectric properties were analyzed in detail with respect to frequency ranged from 0.1 Hz to 5 MHz, temperature ranged from 289 to 373 K, and BT loading. The high k values of the CNF/BT films were attributed to spontaneous polarization of BT particles. The dielectric constant of the nanocomposites increased by addition of BT nanoparticles up to 5 wt% and decreased afterwards. Hopping ionic conduction was proved as a conduction mechanism of the prepared nanocomposites. The activation energy of the conduction ranged from 0.4 to 0.08 eV. Moreover, the values of activation energy decreased as the doping level of BT nanoparticles increased.

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“…It was a reported fact that the piezoelectric materials like barium titanate and its based materials (ceramics & thin films) exhibited extensive applications as actuators, sensors, transducers etc. [12][13][14][15][16][17] . In general, sensors will have the capacity to obtain mechanical energy from I/P energy.…”

Section: Review On D 33 Coefficient and Piezoelectric Materials 21 mentioning

confidence: 99%

“…As a whole, it was noticed that the larger is the electromechanical response, the higher is the performance of piezoelectric actuators. This kind of behavior can be attributed to the high numerical values of longitudinal electromechanical coupling factor (k 33 ) and longitudinal piezoelectric coefficient (d 33 ) [12,13]. Based on these two parameters, one can justify whether the piezoelectric specimen is well suited for the high performance actuator device applications or not [14].…”

Section: Review On D 33 Coefficient and Piezoelectric Materials 21 mentioning

confidence: 99%

“…This manifested that the polycrystalline BT material expressed some what high d 33 while single crystal BT showed moderate value of d 33 . Due to the high d 33 value of BT, it showed many applications like charge stored capacitors, piezoelectric transducers, and actuators[13,18].Further, the BT based ceramics, alloys and composites (as shown inTable.1) [19-35] also expressed the d 33 value changing from 4 to 620 pC/N. Among these materials, Ba(Zr 0.2 Ti 0.8 )TO 3 -50(Ba 0.7 Ca 0.3 )TiO 3 (620 pC/N), BT-x(CT-BS) (570 pC/N) and Ba(Ti 0.88 Sn 0.12 )O 3 -30(Ba 0.7 Ca 0.3 )TiO 3 (530 pC/N) showed the highest value of d 33 reported till now using BT based materials.…”

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confidence: 99%

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