Room temperature hydrogen sensing with polyaniline/SnO2/Pd nanocomposites

Pippara, Rohit Kumar; Chauhan, Pankaj Singh; Yadav, Anshul; Kishnani, Vinay; Gupta, Ankur

doi:10.1016/j.mne.2021.100086

Cited by 48 publications

(12 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The response of halogen doped SnO 2 devices is comparable to other reported sensors which operate at higher temperatures. Pippara et al 41 fabricated an SnO 2 gas sensor doped with polyaniline and palladium that operated at room temperature and had a maximum of response equal to 540%. This result was achieved at 400 ppm.…”

Section: Electrical Characterization and Gas Responsementioning

confidence: 99%

Optimization of the hydrogen response characteristics of halogen-doped SnO2

Filippatos

Sharma

Soultati

et al. 2023

Sci Rep

View full text Add to dashboard Cite

The increasing demand for efficient sensing devices with facile low-cost fabrication has attracted a lot of scientific research effort in the recent years. In particular, the scientific community aims to develop new candidate materials suitable for energy-related devices, such as sensors and photovoltaics or clean energy applications such as hydrogen production. One of the most prominent methods to improve materials functionality and performance is doping key device component(s). This paper aims to examine in detail, both from a theoretical and an experimental point of view, the effect of halogen doping on the properties of tin dioxide (SnO2) and provide a deeper understanding on the atomic scale mechanisms with respect to their potential applications in sensors. Density Functional Theory (DFT) calculations are used to examine the defect processes, the electronic structure and the thermodynamical properties of halogen-doped SnO2. Calculations show that halogen doping reduces the oxide bandgap by creating gap states which agree well with our experimental data. The crystallinity and morphology of the samples is also altered. The synergy of these effects results in a significant improvement of the gas-sensing response. This work demonstrates for the first time a complete theoretical and experimental characterization of halogen-doped SnO2 and investigates the possible responsible mechanisms. Our results illustrate that halogen doping is a low-cost method that significantly enhances the room temperature response of SnO2.

show abstract

Section: Electrical Characterization and Gas Responsementioning

confidence: 99%

Optimization of the hydrogen response characteristics of halogen-doped SnO2

Filippatos

Sharma

Soultati

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…As already described for other gases, polyaniline (PANI) has been used to fabricate composite sensors for remarkable sensing of H 2 gas as well. For example, Pippara and colleague fabricated a unique composite film based on the amalgam of polymer, metal and semiconductor for H 2 gas sensing at room temperature (Pippara et al, 2021). Nanohybrid film, based on tin oxide (SnO 2 ) nanosheets and PANI doped with Pd, was prepared via hydrothermal process.…”

Section: Sensing Of Hydrogenmentioning

confidence: 99%

“…The computational results showed a considerable improvement in the H 2 sensitivity of (i) SnO 2 because of doping with Pd and (ii) PANI due to the presence of SnO 2 . The gas sensing experiments revealed a highest sensitivity of 540% for the SnO 2 -Pd film at 4000 ppm of H 2 while the highest performance factor was observed for the composite film, PANI-SnO 2 -Pd (Pippara et al, 2021). Likewise, Arora and Puri developed a hetero-structure composite sensor based on polyaniline (PANI), palladium oxide (PdO) and indium tin oxide (ITO) for H 2 gas sensing at room temperature (Arora and Puri, 2020).…”

Section: Sensing Of Hydrogenmentioning

confidence: 99%

“…High sensitivity may be due to the synergistic effect of two combined materials and also because of high conductivity of PANI. For sensing of hydrogen, PANI based nanohybrids (i.e., PANI-SnO 2 -Pd and PANI-Sm 2 O 3 ) also showed high response and great sensitivity (Pippara et al, 2021). Polymeric nanohybrids based on PPy showed high sensing potential for the H 2 S (900-1400%) (Oh et al, 2021c), CO 2 (720%) (Kumar et al, 2020), NO 2 (4500%) (J.…”

Section: Summary and Critical Overviewmentioning

confidence: 99%

See 1 more Smart Citation

Advanced polymeric/inorganic nanohybrids: An integrated platform for gas sensing applications

et al. 2022

View full text Add to dashboard Cite

“…[28] However, most of the reported works are based on the SnO 2 nanomaterials, such as nanoparticles, [29][30][31] nanowires, [26,32,33] nanofiber, [20,28,34,35] nanospheres, [27,36] and nanosheets. [37] These powdery materials can be synthesized by low-cost solution methods, which can also be made into sensing layer by simple approaches, such as dip-coating and drop-coating. [26,27] Nevertheless, in this way, the sensors suffer from the poor uniformity and contact in the sensing layer.…”

Section: Introductionmentioning

confidence: 99%

Ultrasensitive and Wide‐Range Flexible Hydrogen Sensor Based on Pd Nanoparticles Decorated Ultrathin SnO₂ Film

Ren

Zhang

Chen

et al. 2023

Adv Elect Materials

View full text Add to dashboard Cite

Highly sensitive and reliable hydrogen detection is prerequisite for the large‐scale implementation of green energy hydrogen. It remains a tough challenge to get a highly selective H2 sensor to low concentration H2 gas with low working temperature. In this work, high performance flexible hydrogen sensor using ultrathin SnO2 film decorated by Pd nanoparticles (NPs) on polyimide (PI) was developed based on versatile atomic layer deposition (ALD) and cluster beam deposition (CBD). The influence of Pd NPs loading amount and operating temperature on the performance of hydrogen sensors was studied. The sensors obtain an extremely high response over 20000 to 30 ppm H2 at the relatively low operating temperature of 75–125 °C. The Pd NPs@SnO2/PI sensor achieves a wide detection range of 0.1‐5000 ppm with the limit of detection (LOD) of 100 ppb at 125 °C. A low LOD of 250 ppb can still be achieved at room temperature. The sensors also exhibit outstanding sensing selectivity for hydrogen over interfering gases and excellent mechanical resistance after 2000 bending cycles. The mechanism for improved sensing performance of ALD ultrathin film with CBD‐derived noble metal NPs decoration may be a feasible strategy for the construction of highly sensitive, selective, and flexible hydrogen sensors.

show abstract

Room temperature hydrogen sensing with polyaniline/SnO2/Pd nanocomposites

Cited by 48 publications

References 32 publications

Optimization of the hydrogen response characteristics of halogen-doped SnO2

Optimization of the hydrogen response characteristics of halogen-doped SnO2

Advanced polymeric/inorganic nanohybrids: An integrated platform for gas sensing applications

Ultrasensitive and Wide‐Range Flexible Hydrogen Sensor Based on Pd Nanoparticles Decorated Ultrathin SnO₂ Film

Contact Info

Product

Resources

About

Room temperature hydrogen sensing with polyaniline/SnO2/Pd nanocomposites

Cited by 48 publications

References 32 publications

Optimization of the hydrogen response characteristics of halogen-doped SnO2

Optimization of the hydrogen response characteristics of halogen-doped SnO2

Advanced polymeric/inorganic nanohybrids: An integrated platform for gas sensing applications

Ultrasensitive and Wide‐Range Flexible Hydrogen Sensor Based on Pd Nanoparticles Decorated Ultrathin SnO2 Film

Contact Info

Product

Resources

About

Ultrasensitive and Wide‐Range Flexible Hydrogen Sensor Based on Pd Nanoparticles Decorated Ultrathin SnO₂ Film