Ammonia sensing properties of PPy nanostructures (urchins/flowers) towards low-cost and flexible gas sensors at room temperature

Lawaniya, Shiv Dutta; Kumar, Sanjay; Yu, Yeon–Tae; Awasthi, Kamlendra

doi:10.1016/j.snb.2023.133566

Cited by 33 publications

(10 citation statements)

References 50 publications

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“…In an acrylic chamber, controlled by a power supply and humidity sensor at ambient temperature (27 ± 2 °C) and relative humidity (30 ± 2%), the gas sensing measurement of the fabricated flexible sensors were investigated 28 . The 1000 ppm target gas concentration calibrated cylinder with dry air (80% N 2 & 20% O 2 ) was purchased from Ankur Gas Agency, India.…”

Section: Methodsmentioning

confidence: 99%

Nitrogen-doped carbon nano-onions/polypyrrole nanocomposite based low-cost flexible sensor for room temperature ammonia detection

Lawaniya,

Kumar,

et al. 2024

Sci Rep

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One of the frontier research areas in the field of gas sensing is high-performance room temperature-based novel sensing materials, and new family of low-cost and eco-friendly carbon nanomaterials with a unique structure has attracted significant attention. In this work, we propose a novel low-cost flexible room temperature ammonia gas sensor based on nitrogen-doped carbon nano-onions/polypyrrole (NCNO-PPy) composite material mounted low-cost membrane substrate was synthesized by combining hydrothermal and in-situ chemical polymerization methods. The proposed flexible sensor revealed high sensing performance when employed as the sensing material for ammonia detection at room temperature. The NCNO-PPy ammonia sensor exhibited 17.32% response for 100 ppm ammonia concentration with a low response time of 26 s. The NCNO-PPy based flexible sensor displays high selectivity, good repeatability, and long-term durability with 1 ppm as the lower detection limit. The proposed flexible sensor also demonstrated remarkable mechanical robustness under extreme bending conditions, i.e., up to 90° bending angle and 500 bending cycles. This enhanced sensing performance can be related to the potential bonding and synergistic interaction between nitrogen-doped CNOs and PPy, the formation of defects from nitrogen doping, and the presence of high reactive sites on the surface of NCNO-PPy composites. Additionally, the computational study was performed on optimized NCNO-PPy nanocomposite for both with and without NH3 interaction. A deeper understanding of the sensing phenomena was proposed by the computation of several electronic characteristics, such as band gap, electron affinity, and ionization potential, for the optimized composite.

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Section: Methodsmentioning

confidence: 99%

Nitrogen-doped carbon nano-onions/polypyrrole nanocomposite based low-cost flexible sensor for room temperature ammonia detection

Lawaniya,

Kumar,

et al. 2024

Sci Rep

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“…88 Workplace ammonia detection alerts if the concentration of ammonia is too high. 22 Incorporating such a sensor into a small, inexpensive wearable may better protect employees because a wearable is easy to use and more effective for detecting individual exposure. Table III is a summary of inkjetprinted gas sensors.…”

Section: Applications Of Inkjet Sensorsmentioning

confidence: 99%

Progress in Inkjet-Printed Sensors and Antennas

Sandry,

Shila,

Gonzalez-Jimenez

et al. 2023

Electrochem. Soc. Interface

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In recent years, inkjet printing has become a popular form for creating sensors and antennas. These devices are fabricated using different materials with inkjet printing using various (conductive, oxide, biological) inks on predominantly flexible substrate. This form of fabrication has attracted much attention for a variety of reasons such as relatively cheap cost of manufacturing and materials, as well as the ease of use and high customization. These devices also provide a lighter frame and added flexibility allowing them to be incorporated as devices on non-planar surfaces. It is also possible for inkjet printing to be used as a sustainable manufacturing method, providing a method of reducing electronic waste. In this article, several topics related to inkjet printing are covered. These topics include a general overview of the fabrication process of inkjet devices through an inkjet printer, recent applications of inkjet-printed sensors, applications of inkjet-printed antennae, challenges in inkjet printing, and an outlook on the inkjet printing. In the fabrication section, the different materials and printing process are explored. Topics covered in the application section include gas sensors, biomedical sensors, pressure sensors, temperature sensors, glucose sensors, and more. In the inkjet antennas portion of the article, RFID tagging and 5G applications are highlighted. The main challenges covered are specific to fabrication that are being currently addressed.

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“…Several categories of ammonia-sensitive materials, including metal oxide, − carbon-based materials (graphene, carbon nanotubes, and their derivates), conductive polymers, − and transition metal disulfides (TMDs) − have been used for the ammonia gas sensor. Among those materials mentioned above, conductive polymers and TMDs are more promising from the perspective of a room temperature (RT) response property.…”

Section: Introductionmentioning

confidence: 99%

1D/2D Heterostructured WS₂@PANI Composite for Highly Sensitive, Flexible, and Room Temperature Ammonia Gas Sensor

Wang,

Tang,

Song

et al. 2024

ACS Appl. Mater. Interfaces

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Flexible and room-temperature (RT) ammonia gas sensors are needed for exhaled breath detection and recognition. Two-dimensional transition metal disulfides are potential materials for RT gas sensing because of their low band gap and a large number of edge-exposed sites that can provide strong binding to gas molecules. In this work, a 1D/2D heterostructured composite material of 2D tungsten disulfide (WS 2 ) modified with 1D polyaniline (PANI) was proposed. The fibrous PANI adsorbed on the edges and inserted in the interlayers of the laminated WS 2 provide more diffusion channels for the ammonia gas and act as sensing sites. The WS 2 @PANI-based sensor shows high selectivity for ammonia with satisfying reproducibility and long-term stability. A response of 216.3% and a short response/recovery time of 25 s/ 39 s were achieved for 100 ppm ammonia gas. The sensing mechanism was investigated in detail via complex impedance spectra and in situ FT-IR, which was attributed to the synergistic effect of WS 2 and PANI. The excellent sensing performance coupled with its resistance to thermal and humidity interference endows the WS 2 @PANI-based sensor with potential for human exhaled detection and wearable electronics.

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Ammonia sensing properties of PPy nanostructures (urchins/flowers) towards low-cost and flexible gas sensors at room temperature

Cited by 33 publications

References 50 publications

Nitrogen-doped carbon nano-onions/polypyrrole nanocomposite based low-cost flexible sensor for room temperature ammonia detection

Nitrogen-doped carbon nano-onions/polypyrrole nanocomposite based low-cost flexible sensor for room temperature ammonia detection

Progress in Inkjet-Printed Sensors and Antennas

1D/2D Heterostructured WS₂@PANI Composite for Highly Sensitive, Flexible, and Room Temperature Ammonia Gas Sensor

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Ammonia sensing properties of PPy nanostructures (urchins/flowers) towards low-cost and flexible gas sensors at room temperature

Cited by 33 publications

References 50 publications

Nitrogen-doped carbon nano-onions/polypyrrole nanocomposite based low-cost flexible sensor for room temperature ammonia detection

Nitrogen-doped carbon nano-onions/polypyrrole nanocomposite based low-cost flexible sensor for room temperature ammonia detection

Progress in Inkjet-Printed Sensors and Antennas

1D/2D Heterostructured WS2@PANI Composite for Highly Sensitive, Flexible, and Room Temperature Ammonia Gas Sensor

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Product

Resources

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1D/2D Heterostructured WS₂@PANI Composite for Highly Sensitive, Flexible, and Room Temperature Ammonia Gas Sensor