Bimetal PtPd functionalized Bi2MoO6 microspheres for conductometric detection of CO: A combined experimental and theoretical study

Zhang, Yan; Zhu, Linghao; Qin, Cong; Wang, Yan; Cao, Jianliang

doi:10.1016/j.snb.2023.133461

Cited by 41 publications

(14 citation statements)

References 46 publications

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“…Transmission electron microscopy (TEM) and SEM were used to view the interior morphology in detail. Recently, chemical sensors have undergone rapid development. , Yang et al described a simple method for creating a sturdy cellulose membrane device coated in PDA/TOB@CA. The PDA/TOB@CA membrane not only exhibited synergistic antibacterial behavior with long-term and sustained antibiotic release profiles, but it also attained a high-water evaporation rate.…”

Section: Introductionmentioning

confidence: 99%

GO/CuO Nanohybrid-Based Carbon Dioxide Gas Sensors with an Arduino Detection Unit

Bhat,

Ukkund,

Ashraf

et al. 2023

ACS Omega

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A gas sensor is a device that detects the presence of gases in a specific area. This research work demonstrates the effectiveness of gas sensors based on graphene oxide (GO) and copper oxide (CuO) semiconductor nanomaterials for the detection of carbon dioxide. GO and CuO were prepared by the modified Hummer’s method and precipitation method using CuCl 2 as a precursor, respectively. These materials are made into a hybrid using poly(vinyl alcohol) (PVA)/poly(vinylpyrrolidone) (PVP) polymer solutions of low concentrations and are spin coated onto the pattern-etched copper-clad substrate. The sensor is tested using a source measurement unit (SMU) to obtain the change in the resistance of the sensor in open air and in a carbon dioxide environment. The fabricated sensor with an Arduino microcontroller detection unit showed a good sensing response of 60%.

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Section: Introductionmentioning

confidence: 99%

GO/CuO Nanohybrid-Based Carbon Dioxide Gas Sensors with an Arduino Detection Unit

Bhat,

Ukkund,

Ashraf

et al. 2023

ACS Omega

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“…Metal oxide semiconductor (MOS)-based gas sensors have become the most attractive gas sensors owing to their low cost, ability to be integrated into portable devices, and high sensitivity. − The core of an MOS gas sensor is a gas-sensitive material. The development of high-performance sensitive materials has become a research hotspot.…”

Section: Introductionmentioning

confidence: 99%

Nanoporous Mixed-Phase In₂O₃ Nanoparticle Homojunctions for Formaldehyde Sensing

Qin

Zhang

Wang

et al. 2023

ACS Appl. Nano Mater.

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Designing a reliable sensor for indoor formaldehyde (HCHO) with high sensitivity and selectivity is crucial for environmental and health protection. This study reported HCHO sensors based on a nanoporous mixed-phase In 2 O 3 nanoparticle. A combined cubic and orthorhombic phase In(OH) 3 /InOOH [c-In(OH) 3 /o-InOOH] precursor, synthesized through a facile solvothermal route at different temperatures, was annealed to prepare the In 2 O 3 nanoparticle homojunction. The obtained In 2 O 3 , calcined at 350 °C, exhibited a porous structure and a large specific surface area of 81.46 cm 3 •g −1 , facilitating more number of active sites' exposure for HCHO-sensing reactions. Results showed that the In 2 O 3 calcined at 350 °C exhibited the best HCHO-sensing performances at 120 °C with a large response value (330−50 ppm), good selectivity, and a short response time (12 s). Additionally, its detection limit could reach 11 ppb. This HCHO gas sensing behavior was owing to the mixed-phase homojunction structure formed between cubic and rhombohedral In 2 O 3 , the large specific surface area, and the porous structure with abundant oxygen vacancies. This study indicated that the nanoporous mixed-phase In 2 O 3 nanoparticles could be the potential candidates for rapidly detecting HCHO at low concentration levels under low power consumption.

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“…Bismuth molybdate (BMO) is a low-cost and low-toxicity bimetallic oxide with an adjustable morphology and good catalytic properties. Because of these characteristics, it has been studied for a wide range of applications including as an acousto-optic nanomaterial, gas sensor, photoconductor, photocatalyst, adsorbent, ionic conductor, metabolite, and humidity sensor. − As a gas sensor, the α and γ phases of BMO have been developed to detect different VOC, but never specifically for TEA quantification. , This Aurivillius oxide is commonly synthesized by combining bismuth(III) nitrate (BNO) with either ammonium heptamolybdate or sodium molybdate. , More recently, BMO has been derived from Bi-MOF instead of uncoordinated BNO . This synthesis method was shown to improve the performance of BMO nanoparticles for photocatalysis due to better charge separation mainly caused by the presence of intrinsic surface defects generated by the collapse of the MOF structure .…”

Section: Introductionmentioning

confidence: 99%

“…20−23 As a gas sensor, the α and γ phases of BMO have been developed to detect different VOC, but never specifically for TEA quantification. 24,25 This Aurivillius oxide is commonly synthesized by combining bismuth(III) nitrate (BNO) with either ammonium heptamolybdate or sodium molybdate. 26,27 More recently, BMO has been derived from Bi-MOF instead of uncoordinated BNO.…”

Section: ■ Introductionmentioning

confidence: 99%

Bismuth Molybdate Nanorods Derived from a Metal–Organic Framework for Triethylamine Gas Sensors

Tremblay

Zhang

2023

ACS Appl. Nano Mater.

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A heterojunction metal oxide semiconductor made of three phases of bismuth molybdate (BMO) (α, β, γ) was synthesized by a one-pot process from a metal–organic framework (MOF) and evaluated in a side-heated sensor for the detection of the toxic gas triethylamine (TEA). An X-ray diffraction analysis indicated that the heterostructure comprises 24.1% α-Bi2Mo3O12, 59.1% β-Bi2Mo2O9, and 16.8% γ-Bi2MoO6. Because of the collapse of the MOF structure during the synthesis process, BMO nanorods exhibited surface defects beneficial for gas sensing. Consequently, the TEA sensing performance of αβγ-BMOMOF was significantly superior to αβγ-BMO prepared instead with uncoordinated bismuth nitrate. When compared to single-phase α-Bi2Mo3O12 MOF and γ-Bi2MoO6 MOF sensors, the αβγ-BMOMOF heterojunction sensor exhibited high performance with a limit of detection of 0.5 ppm and a response value of 58.5 to 100 ppm TEA at an optimal temperature of 340 °C. In addition, αβγ-BMOMOF nanorods exhibited excellent selectivity, long-term stability, and short response and recovery times of 2 and 5 s, respectively. Because of heterojunctions between the different phases, the αβγ-BMOMOF sensor had a higher electrical resistance in air and adsorbed a larger quantity of oxygen anions capable of reacting with TEA. These features of the heterostructure material explain its superior TEA sensing performance. The low-cost and low-toxicity αβγ-BMOMOF sensor described here is a promising alternative for the detection of volatile organic molecules.

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Bimetal PtPd functionalized Bi2MoO6 microspheres for conductometric detection of CO: A combined experimental and theoretical study

Cited by 41 publications

References 46 publications

GO/CuO Nanohybrid-Based Carbon Dioxide Gas Sensors with an Arduino Detection Unit

GO/CuO Nanohybrid-Based Carbon Dioxide Gas Sensors with an Arduino Detection Unit

Nanoporous Mixed-Phase In₂O₃ Nanoparticle Homojunctions for Formaldehyde Sensing

Bismuth Molybdate Nanorods Derived from a Metal–Organic Framework for Triethylamine Gas Sensors

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Bimetal PtPd functionalized Bi2MoO6 microspheres for conductometric detection of CO: A combined experimental and theoretical study

Cited by 41 publications

References 46 publications

GO/CuO Nanohybrid-Based Carbon Dioxide Gas Sensors with an Arduino Detection Unit

GO/CuO Nanohybrid-Based Carbon Dioxide Gas Sensors with an Arduino Detection Unit

Nanoporous Mixed-Phase In2O3 Nanoparticle Homojunctions for Formaldehyde Sensing

Bismuth Molybdate Nanorods Derived from a Metal–Organic Framework for Triethylamine Gas Sensors

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Nanoporous Mixed-Phase In₂O₃ Nanoparticle Homojunctions for Formaldehyde Sensing