Catalytic Gas-Driven Exfoliation of Sulfonic Acid-Linked Covalent Organic Framework Nanostructures for Hydrogen Sensing
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.
Authors
- Santanu Bhattacharyya (ORCID: https://orcid.org/0000-0001-5572-2551)
- Suresh Babu Kalidindi (ORCID: https://orcid.org/0000-0003-0225-4648)
- Valle Krishnaveni (ORCID: https://orcid.org/0000-0002-7802-4243)
- K. Basavaiah (ORCID: https://orcid.org/0000-0002-6227-4424)
- A. Bonda (ORCID: https://orcid.org/0000-0003-4917-6835)
- Marilyn Esclance DMello (ORCID: https://orcid.org/0000-0003-0232-823X)
- Nany Thokala (ORCID: https://orcid.org/0000-0001-7141-3521)
- Vinay Kumar Sriramadasu
- Swamy Akkenapally
- Sumit B. Bubanale
Institutions
- Andhra University (IN)
- Poornaprajna Institute of Scientific Research (IN)
- Indian Institute of Science Education and Research Berhampur (IN)
- Centre for Nano and Soft Matter Sciences (IN)
Publication Details
- Journal
- ACS Applied Nano Materials
- Published
- 2024-10-14
- DOI
- https://doi.org/10.1021/acsanm.4c04609
- Citations
- 5
- Primary Topic
- Covalent Organic Framework Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.59
Funders
- Science and Engineering Research Board