CARBON NANO SURFACES AND TUBULES APPLIED AS A GAS SENSOR

Vinícius Jessé Rodrigues de Oliveira Patzer; Marcelo Soares Borro; Clarissa de Almeida Olivati

Todos os Trabalhos

Trabalho

Título do Trabalho

CARBON NANO SURFACES AND TUBULES APPLIED AS A GAS SENSOR

Autores

Vinícius Jessé Rodrigues de Oliveira Patzer
Marcelo Soares Borro
Clarissa de Almeida Olivati

Modalidade

Apresentação Oral

Área temática

3) Design, Synthesis, and Characterization of Electronic/Optoelectronic Materials and Devices

Data de Publicação

17/05/2024

País da Publicação

Brasil

Idioma da Publicação

Inglês

Página do Trabalho

https://www.even3.com.br/anais/workshop-do-ineo-2024/795846-carbon-nano-surfaces-and-tubules-applied-as-a-gas-sensor

ISBN

978-65-272-0462-6

Palavras-Chave

Carbon Nanotubes, Gas Sensor, Thin Films, Data Analysis

Resumo

The pursuit of electronic materials that align with organic and sustainable criteria is gaining increasing attention. Thus, organic electronics, as we know them, have been emerging as an alternative to existing technologies. Materials like Carbon Nanotubes (CNTs) find diverse applications such as coatings and protection, high-quality panels and displays, or sensitive films. These structures, when processed as thin films, not only exhibit excellent electrical conduction from the carbon content but also offer advantages in terms of electrical conductivity and sensitivity, along with high stability in environmental conditions. One of the methods for processing carbon nanotube structures is the Langmuir Schaefer technique. The single-walled carbon nanotube with functionalized side chains was dissolved in an organic solvent, and electrical characterizations were conducted on these formed structures. In addition to the electrical characterization of current versus voltage (I vs V) to assess the electrical conductivity of each sample, time-dependent current tests (I vs t) were performed to observe the potential of these structures as gas sensors. In this method, the solubilized material is spread over an ultrapure aqueous subphase, and after solvent evaporation, the amphiphilic material is compressed on the surface by lateral Teflon barriers. This process is monitored by surface tension sensors, indicating the organization the material is adopting. Following this initial study, referred to as the isotherm of superficial pressure per area, we can proceed to transfer this Langmuir layer to a solid substrate while maintaining constant superficial pressure. The solid substrate consists of glass and interdigitated gold electrodes, forming the sensorial structure. The deposition process by substrate contact with the surface is controllable in crucial aspects for electronic devices. Subsequently, utilizing this carbon nanostructure as a sensor for volatile organic or inorganic vapors, these vapors can interact with the structural cavities of ordered carbon nanotubes, forming a thin film [1]. As the structure is based on the organization of the tubes, we achieve a broad sensorial area due to the formation of nanochannels or porous nano-surfaces, facilitating contact with the vapor to be detected. Each vapor has its specificity of interaction, and different characteristics can be observed and grouped with statistical analysis software, based on the peaks and electrical responses emitted [2]. This enables the identification of the applied vapor, in addition to evaluating the functional response of the gas sensor. Acknowledgements: INEO,CAPES, CNPEM, CNPq, LNNano FAPESP, PROPe UNESP. [1] Y. Li, X. Huang, L. Zeng, R. Li, H. Tian, X. Fu, Y. Wang, W.H. Zhong, A review of the electrical and mechanical properties of carbon nanofiller-reinforced polymer composites, J. Mater. Sci. 54 (2019) 1036–1076. doi:10.1007/s10853-018-3006-9. [2]T.A. Akbar, A. Javed, S. Ullah, W. Ullah, A. Pervez, R.A. Akbar, M.F. Javed, A. Mohamed, A.M. Mohamed, Principal Component Analysis (PCA)–Geographic Information System (GIS) Modeling for Groundwater and Associated Health Risks in Abbottabad, Pakistan, Sustainability. 14 (2022) 14572. doi:10.3390/su142114572.

Título do Evento: Workshop do INEO 2024
Cidade do Evento: Nazaré Paulista
Título dos Anais do Evento: Anais do Workshop INEO 2024
Nome da Editora: Even3
Meio de Divulgação: Meio Digital

Como citar

PATZER, Vinícius Jessé Rodrigues de Oliveira; BORRO, Marcelo Soares; OLIVATI, Clarissa de Almeida. CARBON NANO SURFACES AND TUBULES APPLIED AS A GAS SENSOR.. In: Anais do Workshop INEO 2024. Anais...Nazaré Paulista(SP) Hotel Estância Atibainha, 2024. Disponível em: https//www.even3.com.br/anais/workshop-do-ineo-2024/795846-CARBON-NANO-SURFACES-AND-TUBULES-APPLIED-AS-A-GAS-SENSOR. Acesso em: 08/08/2025