Highly selective gas sensor for rapid detection of triethylamine using PdRu alloy nanoparticles functionalized SnO2

Wang, Yilin; Liu, Ziqi; Yang, Lin; Li, Yueyue; Bai, Jing; Sui, Chengming; Liu, Yuanzhen; Liang, Xishuang; Liu, Fengmin; Lu, G. Q.

doi:10.1016/j.snb.2022.133205

Cited by 36 publications

(6 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is evident that the inclusion of Pd@Pt NCs has notably enhanced not only the response value but also the response and recovery speed compared to pristine ZnO, with the recovery speed doubling. The increased response values and accelerated response recovery rates might result in the synergistic influence of Pd@Pt NCs, which can impact the adsorption and desorption kinetics of the target gas . Its excellent catalytic ability would result in the rapid dissociation of a great amount of oxygen molecules to form adsorbed oxygen ions, thus expediting the surface redox process.…”

Section: Resultsmentioning

confidence: 99%

Pd@Pt Core–Shell Nanocrystal-Decorated ZnO Nanosheets for ppt-Level NO₂ Detection

Sui,

Zhang,

et al. 2024

ACS Sens.

Self Cite

View full text Add to dashboard Cite

Bimetallic nanocrystals (NCs) have obtained significant attention due to their unique advantages of the intrinsic properties of individual metals and synergistic enhancements resulting from the electronic coupling between two constituent metals. In this work, Pd@Pt core−shell NCs were prepared through a facile one-pot solution-phase method, which had excellent dispersion and uniform size. Concurrently, ZnO nanosheets were prepared via a hydrothermal method. To explore their potential in nitrogen dioxide (NO 2 ) gas sensing applications, sensitive materials based on ZnO nanosheets with varying mass percentages of Pd@Pt NCs were generated through an impregnation process. The sensor based on 0.3 wt % Pd@ Pt-ZnO exhibited remarkable performance, demonstrating a substantial response (R g / R a = 60.3) to 50 ppb of NO 2 at a low operating temperature of 80 °C. Notably, this sensor reached an outstanding low detection limit of 300 ppt. The enhancement in gas sensing capabilities can be attributed to the sensitization and synergistic effects imparted by the exceptional catalytic activity of Pd@Pt NCs, which significantly promoted the reaction. This research introduces a novel approach for the utilization of core−shell structured bimetallic nanocrystals as modifiers in metal-oxide-semiconductor (MOS) materials for NO 2 detection.

show abstract

Section: Resultsmentioning

confidence: 99%

Pd@Pt Core–Shell Nanocrystal-Decorated ZnO Nanosheets for ppt-Level NO₂ Detection

Sui,

Zhang,

et al. 2024

ACS Sens.

Self Cite

View full text Add to dashboard Cite

show abstract

“…As a result, the carrier concentration increases, while the resistance decreases at the same time. The surface gas-sensing reactions are expressed as follows: − …”

Section: Resultsmentioning

confidence: 99%

“…As a result, the carrier concentration increases, while the resistance decreases at the same time. The surface gas-sensing reactions are expressed as follows: − O 2 ( g ) ↔ O 2 ( ads ) O 2 ( ads ) ↔ O 2 − ( ads ) + h · O 2 − ( ads ) ↔ 2 O − ( ads ) + h · 2 normalN false( C 2 H 5 false) 3 ( gas ) + 39 O − ( ads ) → N 2 + 15 H 2 O 2 + 12 CO 2 + 39 e − …”

Section: Resultsmentioning

confidence: 99%

Novel Metal–Organic Framework-Assisted Synthesis of ZnO Nanoparticle-Decorated {221} SnO₂ Octahedrons for Improved Triethylamine Gas Sensing

Chen

Zhou

et al. 2023

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

The construction of composites based on metal oxides with exposed high-energy facets is very significant in a wide range of applications including gas detection, catalysis, and energy storage. However, the synthesis of such composites is always hindered by the smooth exposed surface of metal oxides, which is difficult to nucleate and grow a second component. To solve this problem, a novel metal–organic framework-assisted method was proposed to anchor ZnO nanoparticles on {221} facets of SnO2 octahedrons simply by a coating and oxidation process of ZIF-8 on the smooth {221} surface. It was found that a high nucleation energy results from an appropriate ratio of Zn2+ and 2-methylimidazole, giving priority to the heterogeneous nucleation and growth process for ZIF-8 on the surface of SnO2 octahedral nanoparticles. The coverage of ZnO on the smooth surface can also be modulated by the ZIF-8 film. Thanks to the newly designed composites with special structure, the gas-sensing performances of {221} SnO2 were improved extensively, whose response toward 100 ppm triethylamine (TEA) can be increased more than triple times from 5.68 to 18.37 (R a/R g) by the combination of ZnO nanoparticles. This intensively improved gas-sensing performance was attributed to the special structure with extra sensitive depletion layers at the heterojunction as well as the single-crystalline feature of SnO2 octahedral nanoparticles. These composites are thus promising gas-sensing materials for TEA detection with excellent performances. More significantly, it can also pave a new way to combine metal oxides with exposed high-energy facets, providing a unique and effective means for enhancing the properties and functionality of materials in a range of fields.

show abstract

“…In addition, the presence of lone pair electrons in the nitrogen atom of TEA makes it easier to attach to the material surface. 51 Another reason may be the specific catalytic effect of PtPd bimetals on TEA molecules during chemical reactions. This can be demonstrated by the results of the gas-sensing tests, where the responses of the monometallic-modified S5 and S6 sensors to TEA, as shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

PtPd NPs-functionalized metal–organic framework-derived α-Fe₂O₃ porous spindles for efficient low-temperature detection of triethylamine

Yan,

Yang,

Sun

et al. 2023

Dalton Trans.

View full text Add to dashboard Cite

show abstract

Highly selective gas sensor for rapid detection of triethylamine using PdRu alloy nanoparticles functionalized SnO2

Cited by 36 publications

References 39 publications

Pd@Pt Core–Shell Nanocrystal-Decorated ZnO Nanosheets for ppt-Level NO₂ Detection

Pd@Pt Core–Shell Nanocrystal-Decorated ZnO Nanosheets for ppt-Level NO₂ Detection

Novel Metal–Organic Framework-Assisted Synthesis of ZnO Nanoparticle-Decorated {221} SnO₂ Octahedrons for Improved Triethylamine Gas Sensing

PtPd NPs-functionalized metal–organic framework-derived α-Fe₂O₃ porous spindles for efficient low-temperature detection of triethylamine

Contact Info

Product

Resources

About

Highly selective gas sensor for rapid detection of triethylamine using PdRu alloy nanoparticles functionalized SnO2

Cited by 36 publications

References 39 publications

Pd@Pt Core–Shell Nanocrystal-Decorated ZnO Nanosheets for ppt-Level NO2 Detection

Pd@Pt Core–Shell Nanocrystal-Decorated ZnO Nanosheets for ppt-Level NO2 Detection

Novel Metal–Organic Framework-Assisted Synthesis of ZnO Nanoparticle-Decorated {221} SnO2 Octahedrons for Improved Triethylamine Gas Sensing

PtPd NPs-functionalized metal–organic framework-derived α-Fe2O3 porous spindles for efficient low-temperature detection of triethylamine

Contact Info

Product

Resources

About

Pd@Pt Core–Shell Nanocrystal-Decorated ZnO Nanosheets for ppt-Level NO₂ Detection

Pd@Pt Core–Shell Nanocrystal-Decorated ZnO Nanosheets for ppt-Level NO₂ Detection

Novel Metal–Organic Framework-Assisted Synthesis of ZnO Nanoparticle-Decorated {221} SnO₂ Octahedrons for Improved Triethylamine Gas Sensing

PtPd NPs-functionalized metal–organic framework-derived α-Fe₂O₃ porous spindles for efficient low-temperature detection of triethylamine