Structural, morphological and gas sensing study of palladium doped tin oxide nanoparticles synthesized via hydrothermal technique

Singh, Deepak; Kundu, Virender; Maan, A. S.

doi:10.1016/j.molstruc.2015.08.009

Cited by 21 publications

(9 citation statements)

References 41 publications

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“…The intensities of the IR bands increased due to the increase in the nickel doping level, which decreased the particle size due to the high surface area and the continuous adsorption of water molecules from the atmosphere. 39 In all the samples, the IR bands related to the O-H bonds suggested the presence of active sites, fast adsorption and surface modication.…”

Section: Resultsmentioning

confidence: 90%

A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO₂) for sensing carbon dioxide gas and humidity

Manikandan¹,

Petrila

Vigneselvan

et al. 2020

RSC Adv.

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Section: Resultsmentioning

confidence: 90%

A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO₂) for sensing carbon dioxide gas and humidity

Manikandan¹,

Petrila

Vigneselvan

et al. 2020

RSC Adv.

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“…For the CNT- g -PAA@SnO 2 , the diffraction peak of CNTs generally locates at about 26°, which represents the carbon (002) plane. Also, the peaks at 2θ of 26.1, 33.8, and 51.6° are indexed to the (110), (101), and (211) planes of the standard SnO 2 phase (JCPDS, 41-1145) . Of particular note is that the CNT (002) and SnO 2 (110) peaks are overlapped with one another.…”

Section: Resultsmentioning

confidence: 99%

“…Also, the peaks at 2θ of 26.1, 33.8, and 51.6°are indexed to the (110), (101), and (211) planes of the standard SnO 2 phase (JCPDS, 41-1145). 46 Of particular note is that the CNT (002) and SnO 2 (110) peaks are overlapped with one another. As we can see, the peaks for SnO 2 are very broad, which indicates that the SnO 2 layer consists of a small size of SnO 2 NPs.…”

Section: Resultsmentioning

confidence: 99%

Ultrafine and Highly Dispersed PtRu Alloy on Polyacrylic Acid-Grafted Carbon Nanotube@Tin Oxide Core/Shell Composites for Direct Methanol Fuel Cells

Sang

Zhang

et al. 2022

ACS Appl. Energy Mater.

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There has been immense interest in the hierarchical design of structural composite materials as electrocatalysts with high performance for direct methanol fuel cells (DMFCs). Herein, we rationally designed and prepared a newly hierarchical quaternary nanocomposite composed of carbon nanotubes (CNTs), polyacrylic acid (PAA), SnO2 layers, and PtRu alloys. In this multiple-phase boundary nanostructure, tiny-sized PtRu alloy particles are deposited in a highly dispersed form on the robust CNT support owing to the efficient utilization of covalently grafted PAA brushes and uniformly coated SnO2 layer. The overall electrocatalytic activity of as-prepared CNT-g-PAA@SnO2/PtRu catalysts for methanol oxidation has been thoroughly studied. Among these, the best CNT-g-PAA@SnO2/PtRu catalyst exhibits well-balanced performance with a high mass activity (519.74 mA mg–1 of Pt), a low onset potential (0.16 V), and good I f/I b values (1.40). Furthermore, the activities of the CNT-g-PAA@SnO2/PtRu catalysts were evaluated using the single-cell DMFC test, which reveals superior performance toward methanol oxidation as compared with the reported catalysts. The outstanding performance of the prepared CNT-g-PAA@SnO2/PtRu catalysts is attributed to the good dispersion and small particle size of PtRu alloy nanoparticles (NPs), the high porosity, and the electrical conductivity of the CNT support and the rational synergism with the combined effect (i.e., enhancing the intrinsic activity of PtRu, promoting the formation of active OH species from water, and improving CO poisoning tolerance). This work provides some guidance for the fabrication of hierarchical composite materials for use in DMFCs.

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“…Moreover, there are a few drawbacks in using graphene such as lack of method for large-scale preparation and the necessity of further treatment of graphene to improve its response sensitivity [ 65 ]. Earlier, it has been shown that 0.2% Pd-doped SnO 2 exhibits the best response (80%) toward CO at different operating temperatures within the measurement time [ 66 ]. In our study, when SnO 2 nanoparticles were doped with 0.1%, 0.2%, and 0.3% palladium, the results show an increased sensing capability toward CO gas, the best sensitivity being exhibited by 0.2% Pd-doped SnO 2 nanoparticles connected as eight sensor array.…”

Section: Resultsmentioning

confidence: 99%

Palladium-Doped Tin Oxide Nanosensor for the Detection of the Air Pollutant Carbon Monoxide Gas

Jebakumar

Juliet

2020

Sensors

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The exhaust gases from various sources cause air pollution, which is a leading contributor to the global disease burden. Hence, it has become vital to monitor and control the increasing pollutants coming out of the various sources into the environment. This paper has designed and developed a sensor material to determine the amount of carbon monoxide (CO), which is one of the major primary air pollutants produced by human activity. Nanoparticle-based sensors have several benefits in sensitivity and specificity over sensors made from traditional materials. In this study, tin oxide (SnO2), which has greater sensitivity to the target gas, is selected as the sensing material which selectively senses only CO. Tin oxide nanoparticles have been synthesized from stannous chloride dihydrate chemical compound by chemical precipitation method. Palladium, at the concentration of 0.1%, 0.2%, and 0.3% by weight, was added to tin oxide and the results were compared. Synthesized samples were characterized by X-ray diffraction (XRD) and field emission scanning electron microscope (FESEM) techniques. XRD revealed the tetragonal structure of the SnO2 nanoparticles and FESEM analysis showed the size of the nanoparticles to be about 7–20 nm. Further, the real-time sensor testing was performed and the results proved that the tin oxide sensor, doped with 0.2% palladium, senses the CO gas more efficiently with greater sensitivity.

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Structural, morphological and gas sensing study of palladium doped tin oxide nanoparticles synthesized via hydrothermal technique

Cited by 21 publications

References 41 publications

A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO₂) for sensing carbon dioxide gas and humidity

A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO₂) for sensing carbon dioxide gas and humidity

Ultrafine and Highly Dispersed PtRu Alloy on Polyacrylic Acid-Grafted Carbon Nanotube@Tin Oxide Core/Shell Composites for Direct Methanol Fuel Cells

Palladium-Doped Tin Oxide Nanosensor for the Detection of the Air Pollutant Carbon Monoxide Gas

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Structural, morphological and gas sensing study of palladium doped tin oxide nanoparticles synthesized via hydrothermal technique

Cited by 21 publications

References 41 publications

A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO2) for sensing carbon dioxide gas and humidity

A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO2) for sensing carbon dioxide gas and humidity

Ultrafine and Highly Dispersed PtRu Alloy on Polyacrylic Acid-Grafted Carbon Nanotube@Tin Oxide Core/Shell Composites for Direct Methanol Fuel Cells

Palladium-Doped Tin Oxide Nanosensor for the Detection of the Air Pollutant Carbon Monoxide Gas

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A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO₂) for sensing carbon dioxide gas and humidity

A reliable chemiresistive sensor of nickel-doped tin oxide (Ni-SnO₂) for sensing carbon dioxide gas and humidity