LOW-COST “GREEN” SENSORS BASED ON GRAPHITE NANOMATERIALS
PREPARED FROM PENCIL LEADS WITH THE AID OF A 3D POSITIONING
SPARKING DEVICE FOR THE SENSITIVE DETECTION OF NITROAROMATIC
EXPLOSIVES

D 2019

LOW-COST “GREEN” SENSORS BASED ON GRAPHITE NANOMATERIALS PREPARED FROM PENCIL LEADS WITH THE AID OF A 3D POSITIONING SPARKING DEVICE FOR THE SENSITIVE DETECTION OF NITROAROMATIC EXPLOSIVES

TRACHIOTI, Maria; Jan HRBÁČ; Dušan HEMZAL a Mamas PRODROMIDIS

Základní údaje

Originální název

LOW-COST “GREEN” SENSORS BASED ON GRAPHITE NANOMATERIALS PREPARED FROM PENCIL LEADS WITH THE AID OF A 3D POSITIONING SPARKING DEVICE FOR THE SENSITIVE DETECTION OF NITROAROMATIC EXPLOSIVES

Autoři

TRACHIOTI, Maria; Jan HRBÁČ; Dušan HEMZAL a Mamas PRODROMIDIS

Vydání

1. vyd. Istanbul, XX Euroanalysis, od s. 309-309, 1 s. 2019

Nakladatel

Istanbul University

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10405 Electrochemistry

Stát vydavatele

Turecko

Utajení

není předmětem státního či obchodního tajemství

Forma vydání

elektronická verze "online"

Označené pro přenos do RIV

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

low-cost green sensors; graphite nanomaterials; raman spectroscopy,; scanning electron microscopy; cyclic voltammetry; electrochemical impedance spectroscopy; nitroaromatic explosives

Změněno: 4. 11. 2019 13:59, RNDr. Mgr. Iveta Třísková, Ph.D.

Anotace

V originále

We report on the straightforward preparation of graphite nanomaterials (GNMs) through a direct graphite-to-substrate electric discharge at ambient conditions at 1.2 kV between pencil leads and low-cost graphite screen-printed electrodes (SPEs). The so-modified sparked GNM-SPE was characterized by Raman spectroscopy, scanning electron microscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. GNM-SPE sparked electrodes endowed sensitivity to plain SPEs to the cathodic voltammetric detection of various nitroaromatic explosives. Different commercially available pencil leads including “graphite pencil” (Faber−Castell, Castell 9000) of different degrees of hardness (4H, 2H, HB, 2B and 4B), “high-purity graphite leads” (Pilot, ENO−G, HB), “needle-crystal leads” (Uni-ball, Uni, HB) and “nanodiamonds leads” (Uni-ball, Nano−Dia, HB) were examined. Taking as criterion the highest response to the electro reduction of 2,4,6-trinitrotoluene (TNT), Castell 9000 (2B) pencil was selected as optimum. SPEs that have been modified with 200 sparking cycles showed an excellent repeatability (RSD50ppb = 1.8%, n=5), reproducibility (RSD10ppb = 3.0% and RSD50ppb = 2.8%, n=5) and linear response over the concentration range 1−100 ppb TNT. Data fit the equation I (μA) = (0.0137 ± 0.0002) [TNT(ppb)] − (0.0043 ± 0.0020), R2 = 0.9989, while the limit of detection based on the 3σ/m criterion was calculated 0.44 ppb. The interference effect of other nitroaromatic explosives and masking compounds, which are used to hinder the detection of TNT, was extensively investigated. Moreover, GNM-SPE sparked electrodes were successfully applied to the determination of TNT in drinking water samples fortified with 2, 5 and 10 ppb TNT. Recovery was from 101±8 to 109±7%. Results demonstrated a new type of GNM-SPE low cost electrodes lend themselves to extremely simple preparation while offering enhanced detection capabilities and a wide-scope of applicability. Remarkably, GNM-SPE sparked electrodes can be prepared on-demand, within 3-4 min, through a totally green and solution-free method that requires only a pencil lead and a power supply.

Citovat

TRACHIOTI, Maria; Jan HRBÁČ; Dušan HEMZAL a Mamas PRODROMIDIS. LOW-COST “GREEN” SENSORS BASED ON GRAPHITE NANOMATERIALS PREPARED FROM PENCIL LEADS WITH THE AID OF A 3D POSITIONING SPARKING DEVICE FOR THE SENSITIVE DETECTION OF NITROAROMATIC EXPLOSIVES. Online. In XX Euroanalysis. 1. vyd. Istanbul: Istanbul University, 2019, s. 309-309.

@inproceedings{1576217,
   author = {Trachioti, Maria and Hrbáč, Jan and Hemzal, Dušan and Prodromidis, Mamas},
   address = {Istanbul},
   booktitle = {XX Euroanalysis},
   edition = {1},
   keywords = {low-cost green sensors; graphite nanomaterials; raman spectroscopy,; scanning electron microscopy; cyclic voltammetry; electrochemical impedance spectroscopy; nitroaromatic explosives},
   howpublished = {elektronická verze "online"},
   language = {eng},
   location = {Istanbul},
   pages = {309-309},
   publisher = {Istanbul University},
   title = {LOW-COST “GREEN” SENSORS BASED ON GRAPHITE NANOMATERIALS PREPARED FROM PENCIL LEADS WITH THE AID OF A 3D POSITIONING SPARKING DEVICE FOR THE SENSITIVE DETECTION OF NITROAROMATIC EXPLOSIVES},
   year = {2019}
}

TY  - CONF
ID  - 1576217
AU  - Trachioti, Maria - Hrbáč, Jan - Hemzal, Dušan - Prodromidis, Mamas
PY  - 2019
TI  - LOW-COST “GREEN” SENSORS BASED ON GRAPHITE NANOMATERIALS PREPARED FROM PENCIL LEADS WITH THE AID OF A 3D POSITIONING SPARKING DEVICE FOR THE SENSITIVE DETECTION OF NITROAROMATIC EXPLOSIVES
PB  - Istanbul University
CY  - Istanbul
KW  - low-cost green sensors
KW  - graphite nanomaterials
KW  - raman spectroscopy,
KW  - scanning electron microscopy
KW  - cyclic voltammetry
KW  - electrochemical impedance spectroscopy
KW  - nitroaromatic explosives
N2  - We report on the straightforward preparation of graphite nanomaterials (GNMs) through a direct graphite-to-substrate electric discharge at ambient conditions at 1.2 kV between pencil leads and low-cost graphite screen-printed electrodes (SPEs). The so-modified sparked GNM-SPE was characterized by Raman spectroscopy, scanning electron microscopy, cyclic voltammetry, and electrochemical impedance spectroscopy. GNM-SPE sparked electrodes endowed sensitivity to plain SPEs to the cathodic voltammetric detection of various nitroaromatic explosives. Different commercially available pencil leads including “graphite pencil” (Faber−Castell, Castell 9000) of different degrees of hardness (4H, 2H, HB, 2B and 4B), “high-purity graphite leads” (Pilot, ENO−G, HB), “needle-crystal leads” (Uni-ball, Uni, HB) and “nanodiamonds leads” (Uni-ball, Nano−Dia, HB) were examined. Taking as criterion the highest response to the electro reduction of 2,4,6-trinitrotoluene (TNT), Castell 9000 (2B) pencil was selected as optimum. SPEs that have been modified with 200 sparking cycles showed an excellent repeatability (RSD50ppb = 1.8%, n=5), reproducibility (RSD10ppb = 3.0% and RSD50ppb = 2.8%, n=5) and linear response over the concentration range 1−100 ppb TNT. Data fit the equation I (μA) = (0.0137 ± 0.0002) [TNT(ppb)] − (0.0043 ± 0.0020), R2 = 0.9989, while the limit of detection based on the 3σ/m criterion was calculated 0.44 ppb. The interference effect of other nitroaromatic explosives and masking compounds, which are used to hinder the detection of TNT, was extensively investigated. Moreover, GNM-SPE sparked electrodes were successfully applied to the determination of TNT in drinking water samples fortified with 2, 5 and 10 ppb TNT. Recovery was from 101±8 to 109±7%. Results demonstrated a new type of GNM-SPE low cost electrodes lend themselves to extremely simple preparation while offering enhanced detection capabilities and a wide-scope of applicability. Remarkably, GNM-SPE sparked electrodes can be prepared on-demand, within 3-4 min, through a totally green and solution-free method that requires only a pencil lead and a power supply.
ER  -

TRACHIOTI, Maria; Jan HRBÁČ; Dušan HEMZAL a Mamas PRODROMIDIS. LOW-COST “GREEN” SENSORS BASED ON GRAPHITE NANOMATERIALS PREPARED FROM PENCIL LEADS WITH THE AID OF A 3D POSITIONING SPARKING DEVICE FOR THE SENSITIVE DETECTION OF NITROAROMATIC EXPLOSIVES. Online. In \textit{XX Euroanalysis}. 1. vyd. Istanbul: Istanbul University, 2019, s.~309-309.

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