Development of Pd-Pt functionalized high performance H2 gas sensor based on silicon carbide coated porous silicon for extreme environment applications

Mourya, Satyendra; Kumar, Arvind; Jaiswal, Jyoti; Malik, Gaurav; Kumar, Brijesh; Chandra, Ramesh

doi:10.1016/j.snb.2018.12.042

Cited by 68 publications

(13 citation statements)

References 48 publications

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“…3,52 As we all know, the formation of the abovementioned PtO oxides and Schottky junction is beneficial for detection performance. 53,54 As shown by the results of XPS, the elements, including Fe, O, Au, and Pt, were observed in the survey spectrum (Figure S2), which was also in accordance with the EDS and TEM characterizations (Figure 2). These results further proved that the bimetallic Au@Pt nanocrystals were deposited on α-Fe 2 O 3 NCs successfully.…”

Section: Introductionsupporting

confidence: 79%

“…In addition, the signal of Pt 2+ 4f 5/2 (73.1 eV) and Pt 2+ 4f 7/2 (75.7 eV) revealed the existence of PtO oxides, which were caused by the partial oxidation of the Pt components during calcination Figure d presented signals for Au 4f 5/2 (87.2 eV) and Au 4f 7/2 (83.5 eV), which implied that the Au element existed in the Au0 state. , Compared to the previously reported values of gold metal positions, there also existed a slight shift as the electrons in α-Fe 2 O 3 were transferred to Au, which subsequently formed a Schottky junction. , As we all know, the formation of the abovementioned PtO oxides and Schottky junction is beneficial for detection performance. , As shown by the results of XPS, the elements, including Fe, O, Au, and Pt, were observed in the survey spectrum (Figure S2), which was also in accordance with the EDS and TEM characterizations (Figure ). These results further proved that the bimetallic Au@Pt nanocrystals were deposited on α-Fe 2 O 3 NCs successfully.…”

Section: Results and Discussionmentioning

confidence: 76%

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Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe₂O₃ Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature

Shen

Zhao

et al. 2021

ACS Appl. Mater. Interfaces

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In this work, we present a new metal oxide semiconductor gas sensor for detecting trimethylamine (TMA) by bimetal Au@Pt-modified α-Fe2O3 hollow nanocubes (NCs) as sensing materials. The structure and morphological characteristics of Au@Pt/α-Fe2O3 were evaluated through multiple analyses, and their gas-sensitive performance was investigated. Compared with the pristine α-Fe2O3 NC sensor, the sensor based on Au@Pt/α-Fe2O3 NCs exhibited faster response time (5 s) and higher response (R a/R g = 32) toward 100 ppm TMA gas at a lower temperature (150 °C). Furthermore, we also assessed the Au@Pt/α-Fe2O3 NC sensor for detecting the freshness of Larimichthys crocea which have been observed by headspace solid-phase microextraction and gas chromatography–mass spectrometry. The high performance of the Au@Pt/α-Fe2O3 NCs is attributed to the special hollow morphology with a high specific surface area (212.9 m2/g) and the synergistic effect of the Au@Pt bimetal. The Au@Pt/α-Fe2O3 sensor shows promising application prospects in estimating seafood freshness on the spot.

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Section: Introductionsupporting

confidence: 79%

Section: Results and Discussionmentioning

confidence: 76%

Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe₂O₃ Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature

Shen

Zhao

et al. 2021

ACS Appl. Mater. Interfaces

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“…Figure S15 reveals that there was about a 10−12% decreased response in 60% relative humidity conditions compared to the response in dry conditions. The cyclic and durability test of the sensor was performed 37 as shown in Figure S16. After 6 days, there was about a 34% decreased response.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Half-Pipe Palladium Nanotube-Based Hydrogen Sensor Using a Suspended Nanofiber Scaffold

Cho

Zhu

Kim

et al. 2019

ACS Appl. Mater. Interfaces

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A half-pipe palladium nanotube network (H-PdNTN) structure was developed for high-performance hydrogen (H2) sensor applications. To fabricate the sensor, suspended poly(vinyl alcohol) (PVA) nanofiber bundles were electrospun on a conductive substrate, followed by a palladium (Pd) deposition on top of the PVA nanofiber bundles. Then, Pd-deposited PVA nanofibers were transferred to a host substrate, and the PVA nanofiber templates were selectively removed. Various material analyses confirmed that the PVA nanofibers were successfully dissolved leaving a half-pipe-shaped Pd nanotube network. The fabricated Pd nanotube-based sensors were tested for H2 responses with different gas concentrations. The 4 nm thick sensor showed the highest response (ΔR/R 0) to H2 gas. Platinum (Pt) decoration of the sensor showed an improved response speed compared to that of the pristine sensor via the catalytic function of Pt. Additionally, the sensor exhibited good H2 selectivity against other interfering gases. The H-PdNTN H2 sensor provides a facile and cost-effective way to fabricate high-performance H2 sensors.

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“…Take graphene for instance. Pure graphene absorbs common gas molecules physically, which has a large limitation on gas sensitivity (Feng et al, 2012;Meng et al, 2013;Abideen et al, 2018;Mirzaei et al, 2019;Mourya et al, 2019). The performance of graphene can be changed by metal doping.…”

Section: Gas-sensing Mechanism Based On 2-d Nanomaterialsmentioning

confidence: 99%

Current Applications of Gas Sensor Based on 2-D Nanomaterial: A Mini Review

Tian

et al. 2019

Front. Chem.

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Gas sensor, as one of the most important devices to detect noxious gases, provides a vital way to monitor the concentration and environmental information of gas in order to guarantee the safety of production. Therefore, researches on high sensitivity, high selectivity, and high stability have become hot issues. Since the discovery of the nanomaterial, it has been increasingly applied to the gas sensor for its distinguishing surface performances. However, 0-D and 1-D nanomaterials, with limited electronic confinement effect and surface effect, cannot reach the requirement for the production of gas sensors. This paper gives an introduction about the current researching progress and development trend of 2-D nanomaterials, analyzes the common forms of 2-D nanoscale structure, and summarizes the mechanism of gas sensing. Then, widely concerned factors including morphological properties and crystalline structure of 2-D nanomaterial, impact of doped metal on the sensibility of gas sensors, impact of symmetry, and working temperature on the selectivity of gas sensors have been demonstrated in detail. In all, the detailed analysis above has pointed out a way for the development of new 2-D nanomaterial and enhancing the sensibility of gas sensors.

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Development of Pd-Pt functionalized high performance H2 gas sensor based on silicon carbide coated porous silicon for extreme environment applications

Cited by 68 publications

References 48 publications

Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe₂O₃ Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature

Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe₂O₃ Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature

Half-Pipe Palladium Nanotube-Based Hydrogen Sensor Using a Suspended Nanofiber Scaffold

Current Applications of Gas Sensor Based on 2-D Nanomaterial: A Mini Review

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Development of Pd-Pt functionalized high performance H2 gas sensor based on silicon carbide coated porous silicon for extreme environment applications

Cited by 68 publications

References 48 publications

Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe2O3 Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature

Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe2O3 Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature

Half-Pipe Palladium Nanotube-Based Hydrogen Sensor Using a Suspended Nanofiber Scaffold

Current Applications of Gas Sensor Based on 2-D Nanomaterial: A Mini Review

Contact Info

Product

Resources

About

Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe₂O₃ Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature

Bimetallic Au@Pt Nanocrystal Sensitization Mesoporous α-Fe₂O₃ Hollow Nanocubes for Highly Sensitive and Rapid Detection of Fish Freshness at Low Temperature