Spontaneously decorated palladium nanoparticles on redox active covalent organic framework for chemiresistive hydrogen gas sensing

Thokala, Nany; Vankayala, Kiran; Basavaiah, Keloth; Kalidindi, Suresh Babu

doi:10.1016/j.ijhydene.2024.07.230

International Journal of Hydrogen Energy

2024

DOI: 10.1016/j.ijhydene.2024.07.230

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Spontaneously decorated palladium nanoparticles on redox active covalent organic framework for chemiresistive hydrogen gas sensing

Nany Thokala,

Kiran Vankayala,

Keloth Basavaiah

et al.

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2024

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Catalytic Gas-Driven Exfoliation of Sulfonic Acid-Linked Covalent Organic Framework Nanostructures for Hydrogen Sensing

Krishnaveni,

DMello,

Thokala

et al. 2024

ACS Appl. Nano Mater.

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Exfoliating bulk covalent organic frameworks into soluble covalent organic nanosheets (CONs) enhances processability. Utilizing the catalytic ability of −SO3H groups, ammonia borane hydrolysis was performed in the pores of a TpPa-SO3H COF (Tp = 1,3,5-triformylphloroglucinol; Pa-SO3H = 2,5-diaminobenzenesulfonic acid). The in situ generated hydrogen converted bulk powders into CONs (thickness = 4–16 nm). The CONs-based H2 sensor showed a response of 12.5 ± 0.6% and response/recovery times of 5.5 ± 1/2.6 ± 0.5 s, respectively, at 120 °C for 1% H2. The sensor offers quicker response and recovery times compared to nonmetallic H2 sensors like polyaniline and polythiophene.

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Catalytic Gas-Driven Exfoliation of Sulfonic Acid-Linked Covalent Organic Framework Nanostructures for Hydrogen Sensing

Krishnaveni,

DMello,

Thokala

et al. 2024

ACS Appl. Nano Mater.

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show abstract

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Spontaneously decorated palladium nanoparticles on redox active covalent organic framework for chemiresistive hydrogen gas sensing

Cited by 1 publication

References 84 publications

Catalytic Gas-Driven Exfoliation of Sulfonic Acid-Linked Covalent Organic Framework Nanostructures for Hydrogen Sensing

Catalytic Gas-Driven Exfoliation of Sulfonic Acid-Linked Covalent Organic Framework Nanostructures for Hydrogen Sensing

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