Next Article in Journal
The Influence of Plant Material Enzymatic Hydrolysis and Extraction Conditions on the Polyphenolic Profiles and Antioxidant Activity of Extracts: A Green and Efficient Approach
Next Article in Special Issue
Oxidation-Induced Detachment of Ruthenoarene Units and Oxygen Insertion in Bis-Pd(II) Hexaphyrin π-Ruthenium Complexes
Previous Article in Journal
Study of Caspase 8 Inhibition for the Management of Alzheimer’s Disease: A Molecular Docking and Dynamics Simulation
Previous Article in Special Issue
In Vitro Anti-Leishmanial Effect of Metallic Meso-Substituted Porphyrin Derivatives against Leishmania braziliensis and Leishmania panamensis Promastigotes Properties
Open AccessArticle

A Hybrid Nanomaterial Based on Single Walled Carbon Nanotubes Cross-Linked via Axially Substituted Silicon (IV) Phthalocyanine for Chemiresistive Sensors

1
Nikolaev Institute of Inorganic Chemistry SB RAS, Ak. Lavrentiev Avenue, 3, 630090 Novosibirsk, Russia
2
Saint Petersburg State University of Architecture and Civil Engineering, Vtoraya Krasnoarmeiskaya, 4, 190005 Saint Petersburg, Russia
3
Department of Chemistry, Gebze Technical University, Gebze, 41400 Kocaeli, Turkey
*
Author to whom correspondence should be addressed.
Academic Editors: M. Salomé Rodríguez-Morgade and Soji Shimizu
Molecules 2020, 25(9), 2073; https://doi.org/10.3390/molecules25092073
Received: 31 March 2020 / Revised: 21 April 2020 / Accepted: 28 April 2020 / Published: 29 April 2020
(This article belongs to the Special Issue Phthalocyanines and Porphyrins)
In this work, the novel hybrid nanomaterial SWCNT/SiPc made of single walled carbon nanotubes (SWCNT) cross-linked via axially substituted silicon (IV) phthalocyanine (SiPc) was studied as the active layer of chemiresistive layers for the detection of ammonia and hydrogen. SWCNT/SiPc is the first example of a carbon-based nanomaterial in which an axially substituted phthalocyanine derivative is used as a linker. The prepared hybrid material was characterized by spectroscopic methods, thermogravimetry, scanning and transmission electron microscopies. The layers of the prepared hybrid were tested as sensors toward ammonia and hydrogen by a chemiresistive method at different temperatures and relative humidity as well as in the presence of interfering gases like carbon dioxide, hydrogen sulfide and volatile organic vapors. The hybrid layers exhibited the completely reversible sensor response to both gases at room temperature; the recovery time was 100–200 s for NH3 and 50–120 s in the case of H2 depending on the gas concentrations. At the relative humidity (RH) of 20%, the sensor response was almost the same as that measured at RH 5%, whereas the further increase of RH led to its 2–3 fold decrease. It was demonstrated that the SWCNT/SiPc layers can be successfully used for the detection of both NH3 and H2 in the presence of CO2. On the contrary, H2S was found to be an interfering gas for the NH3 detection. View Full-Text
Keywords: carbon nanotubes; hybrid materials; covalent functionalization; phthalocyanine; gas sensor; chemiresistive sensor carbon nanotubes; hybrid materials; covalent functionalization; phthalocyanine; gas sensor; chemiresistive sensor
Show Figures

Figure 1

MDPI and ACS Style

Polyakov, M.; Ivanova, V.; Klyamer, D.; Köksoy, B.; Şenocak, A.; Demirbaş, E.; Durmuş, M.; Basova, T. A Hybrid Nanomaterial Based on Single Walled Carbon Nanotubes Cross-Linked via Axially Substituted Silicon (IV) Phthalocyanine for Chemiresistive Sensors. Molecules 2020, 25, 2073.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Search more from Scilit
 
Search
Back to TopTop