Bimetallic PtRu alloy nanocrystal-functionalized flower-like WO3 for fast detection of xylene

A triethylamine gas sensor with humidity resistance, high selectivity, and high response is designed. Chromium oxide particles were prepared by heating them in a water bath at 80 °C. Pt/Cr2O3 nanoparticles were obtained by sodium borohydride reduction. The structure morphology of nanoparticles was characterized by some methods. The gas response test results showed that the modification of Pt improved the response value and selectivity of Cr2O3 to triethylamine. It was found that Cr2O3–2Pt nanoparticles had the best performance, and at the optimum operating temperature of 160 °C, its response value reached 200, 68 times that of Cr2O3 (S = 2.95). In addition, the modification of Pt made Cr2O3–2Pt nanoparticles had a wide range of humidity applications. The mechanism of gas response is explained by using the Schottky barrier and hole accumulation layer model of Pt and Cr2O3 contact and energy band theory.

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“…The specific model of the instrument is described in the laboratory's previous article. 37 2.4. Sensor Fabrication.…”

Section: Characterizationmentioning

confidence: 99%

“…It is mainly related to the adsorption of oxygen on the surface, as explained in previous articles of our research group. 37,49 When the gas sensor is placed in a triethylamine atmosphere, triethylamine reacts with the adsorbed oxygen of the material to generate CO 2 , NO 2 , and H 2 O, 16 as shown in the following formulas 1−4:…”

Section: Gas Sensing Mechanismmentioning

confidence: 99%

Highly Selective and Humidity-Resistant Triethylamine Sensors Based on Pt and Cr₂O₃ Nanoparticles

Yang

Wang

Sui

et al. 2022

ACS Appl. Nano Mater.

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“…In particular, Ru-based nanomaterials displayed admirable electrocatalytic performance toward EC and biosensor. As a result, many EC sensors based on Ru NPs have been developed. , Currently, Ru nanocomposites have well-known developed and interesting electrocatalysts because of their efficient electrocatalytic sensing capability of toxic chemicals, biomolecules, − anticancer, antipsychotic, mercury (Hg (II) ), antihistamine, pesticides, volatile organic compounds (VOCs), and drugs. , The production of Ru-based metallic nanocomposites and its EC sensing performances are becoming a research hotspot as a result of the aforementioned factors; nevertheless, until now, no study has comprehensively summarized and discussed the substantial advances in this area. Furthermore, EC sensing devices offer high sensitivity and selectivity, which are important requirements for disposable sensors in healthcare, nutrition, pollution monitoring, and also the rapidly growing industries throughout the world …”

Section: Introductionmentioning

confidence: 99%

“…In the past years, Ru has been explored as a potential electrocatalytic material for EC sensors, − water splitting, ,, and energy storage. , Because of its strong electrocatalytic activity and chemical stability, which alters the catalyst’s electronic structure and improves EC sensing efficacy for biomolecules, drugs, and toxic chemicals. Several Ru NPs-based electrocatalysts have demonstrated comparable or even better activity than Pt catalysts.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, many EC sensors based on Ru NPs have been developed. 22,23 Currently, Ru nanocomposites have wellknown developed and interesting electrocatalysts because of their efficient electrocatalytic sensing capability of toxic chemicals, 24 biomolecules, 25−27 anticancer, 28 antipsychotic, 29 mercury (Hg (II) ), 30 antihistamine, 31 pesticides, 32 volatile organic compounds (VOCs), 33 and drugs. 34,35 The production of Ru-based metallic nanocomposites and its EC sensing performances are becoming a research hotspot as a result of the aforementioned factors; nevertheless, until now, no study has comprehensively summarized and discussed the substantial advances in this area.…”

Section: ■ Introductionmentioning

confidence: 99%

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Review of the Design of Ruthenium-Based Nanomaterials and Their Sensing Applications in Electrochemistry

Veerakumar

Hung

et al. 2022

J. Agric. Food Chem.

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In this review, ruthenium nanoparticles (Ru NPs)-based functional nanomaterials have attractive electrocatalytic characteristics and they offer considerable potential in a number of fields. Ru-based binary or multimetallic NPs are widely utilized for electrode modification because of their unique electrocatalytic properties, enhanced surface-area-to-volume ratio, and synergistic effect between two metals provides as an effective improved electrode sensor. This perspective review suggests the current research and development of Ru-based nanomaterials as a platform for electrochemical (EC) sensing of harmful substances, biomolecules, insecticides, pharmaceuticals, and environmental pollutants. The advantages and limitations of mono-, bi-, and multimetallic Rubased nanocomposites for EC sensors are discussed. Besides, the relevant EC properties and analyte sensing approaches are also presented. On the basis of these insights, we highlighted recent results for synthesizing techniques and EC environmental pollutant sensors from the perspectives of diverse supports, including graphene, carbon nanotubes, silica, semiconductors, metal sulfides, and polymers. Finally, this work overviews the modern improvements in the utilization of Ru-based nanocomposites on the basis for electroanalytical sensors as well as suggestions for the field's future development.

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Microwave‐Assisted PtRu Alloying on Defective Tungsten Oxide: A Pathway to Improved Hydroxyl Dynamics for Highly‐Efficient Hydrogen Evolution Reaction

Zhou,

Wang,

Guo

et al. 2024

Advanced Energy Materials

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Platinum (Pt)‐based compounds are the benchmarked catalysts for hydrogen evolution reaction (HER) but exhibit slow kinetics in alkaline environments. The *OH accumulation on Pt surface can block active sites, affecting proton reduction and water re‐adsorption. Alloying Ruthenium (Ru) with Pt sites can significantly modulate the adsorption and desorption of water dissociation intermediates. Choosing suitable supports and utilizing metal‐support interaction (MSI) is crucial for active site optimization. PtRu alloy anchored on tungsten oxide (WO3) with rich oxygen vacancies (OV) is prepared through an ultrafast microwave‐assisted approach. Benefiting from the coupling effects between alloying and MSI, PtRu/WO3‐OV exhibits exceptionally high HER activity. In 1 m KOH, 1 m KOH + seawater, and 0.5 m H2SO4, it requires ultralow overpotentials of 9, 26, and 6 mV to achieve 10 mA cm−2, respectively. The designed catalyst surpasses commercial Pt/C in mass activity and demonstrates considerable potential for intermittent energy integration. Density functional theory reveals that alloying Ru with Pt sites significantly reduces the energy barrier of dissociating *OH, modulating blockage on the surface and then promoting the overall alkaline HER process. This study offers insights into the rapid synthesis of non‐carbon supported catalysts with Pt site modulation for alkaline hydrogen generation.

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Bimetallic PtRu alloy nanocrystal-functionalized flower-like WO3 for fast detection of xylene

Cited by 32 publications

References 65 publications

Highly Selective and Humidity-Resistant Triethylamine Sensors Based on Pt and Cr₂O₃ Nanoparticles

Highly Selective and Humidity-Resistant Triethylamine Sensors Based on Pt and Cr₂O₃ Nanoparticles

Review of the Design of Ruthenium-Based Nanomaterials and Their Sensing Applications in Electrochemistry

Microwave‐Assisted PtRu Alloying on Defective Tungsten Oxide: A Pathway to Improved Hydroxyl Dynamics for Highly‐Efficient Hydrogen Evolution Reaction

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Bimetallic PtRu alloy nanocrystal-functionalized flower-like WO3 for fast detection of xylene

Cited by 32 publications

References 65 publications

Highly Selective and Humidity-Resistant Triethylamine Sensors Based on Pt and Cr2O3 Nanoparticles

Highly Selective and Humidity-Resistant Triethylamine Sensors Based on Pt and Cr2O3 Nanoparticles

Review of the Design of Ruthenium-Based Nanomaterials and Their Sensing Applications in Electrochemistry

Microwave‐Assisted PtRu Alloying on Defective Tungsten Oxide: A Pathway to Improved Hydroxyl Dynamics for Highly‐Efficient Hydrogen Evolution Reaction

Contact Info

Product

Resources

About

Highly Selective and Humidity-Resistant Triethylamine Sensors Based on Pt and Cr₂O₃ Nanoparticles

Highly Selective and Humidity-Resistant Triethylamine Sensors Based on Pt and Cr₂O₃ Nanoparticles