TY - JOUR
T1 - Chemical-free sustainable carbon nano-onion as a dual-mode sensor platform for noxious volatile organic compounds
AU - Panda, Atanu
AU - Arumugasamy, Shiva Kumar
AU - Lee, Jihyen
AU - Son, Younghu
AU - Yun, Kyusik
AU - Venkateswarlu, Sada
AU - Yoon, Minyoung
N1 - Publisher Copyright:
© 2020 Elsevier B.V.
PY - 2021/1/30
Y1 - 2021/1/30
N2 - Air quality, water safety, and other environmental requirements can be achieved by monitoring volatile organic compounds (VOCs). Majority of the VOC-sensing materials are expensive or require several chemicals for preparation. Herein, a new carbon-based dual electrochemical and fluorescence-sensitive sensing platform was developed to sense diisopropylamine (DIPA) and dioxane. The carbon nano-onion (CNO) was prepared via a solvent-free hydrothermal process using an autoclave. The designed sensor exhibited fluorescence quenching for ethylenediamine (EDA) and DIPA and fluorescence enhancement for dioxane. The fluorescence experiments showed selectivity toward EDA and high DIPA sensitivity with a detection limit of 16.5 nM. The hydrogen bonding interactions between the surface of the CNO and DIPA helped to achieve high sensitivity. Electrochemical investigations were performed for supporting and complementing the fluorescence results. The synthesized CNOs were deposited on a glassy carbon electrode for electrochemical sensing. The amperometry results showed a sensitive DIPA response with a linear range of 0–40 μM, and a limit of detection of 200 nM. Based on the sensing mechanism, the interaction of the surface functional group of the CNO and the polar nitrogen atom in DIPA molecules resulted in high sensitivity. This renewable carbon material can be effective to monitor toxicity in the future.
AB - Air quality, water safety, and other environmental requirements can be achieved by monitoring volatile organic compounds (VOCs). Majority of the VOC-sensing materials are expensive or require several chemicals for preparation. Herein, a new carbon-based dual electrochemical and fluorescence-sensitive sensing platform was developed to sense diisopropylamine (DIPA) and dioxane. The carbon nano-onion (CNO) was prepared via a solvent-free hydrothermal process using an autoclave. The designed sensor exhibited fluorescence quenching for ethylenediamine (EDA) and DIPA and fluorescence enhancement for dioxane. The fluorescence experiments showed selectivity toward EDA and high DIPA sensitivity with a detection limit of 16.5 nM. The hydrogen bonding interactions between the surface of the CNO and DIPA helped to achieve high sensitivity. Electrochemical investigations were performed for supporting and complementing the fluorescence results. The synthesized CNOs were deposited on a glassy carbon electrode for electrochemical sensing. The amperometry results showed a sensitive DIPA response with a linear range of 0–40 μM, and a limit of detection of 200 nM. Based on the sensing mechanism, the interaction of the surface functional group of the CNO and the polar nitrogen atom in DIPA molecules resulted in high sensitivity. This renewable carbon material can be effective to monitor toxicity in the future.
KW - Carbon nano-onion
KW - Chemical-free synthesis
KW - Electrochemical sensing
KW - Fluorescent sensing
KW - Volatile organic compound
UR - http://www.scopus.com/inward/record.url?scp=85091527367&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2020.147872
DO - 10.1016/j.apsusc.2020.147872
M3 - Article
AN - SCOPUS:85091527367
SN - 0169-4332
VL - 537
JO - Applied Surface Science
JF - Applied Surface Science
M1 - 147872
ER -