A study of the electrochemical behavior of an oxadiazole derivative electrodeposited on multi-wall carbon nanotube-modified electrode and its application as a hydrazine sensor

Nasirizadeh, Navid; Zare, Hamid R.; Fakhari, Ali Reza; Ahmar, Hamid; Ahmadzadeh, Mohammad Reza; Naeimi, Amin

doi:10.1007/s10008-010-1259-6

Cited by 30 publications

(8 citation statements)

References 51 publications

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“…Next attention was turned to the electroanalytical sensing of hydrazine, a compound which has a vast usage in fields of rocket fuels, missile systems, weapons of mass destruction, fuel cells and corrosive inhibitors [ 39 , 41 , 47 ]. However there have been extensive reports focusing on its detrimental effects upon the human body, such as: irritation of the eyes, nose, and throat, dizziness, headache, nausea, pulmonary oedema, seizures, and coma in humans [ 48 – 50 ]. Hydrazine has also been reported to be readily oxidised by peroxidases, creating reactive intermediates within the human body which can cause severe side effects such as DNA manipulation, therefore demonstrating the carcinogenic nature of hydrazine [ 47 ].…”

Section: Resultsmentioning

confidence: 99%

Cobalt Phthalocyanine Modified Electrodes Utilised in Electroanalysis: Nano-Structured Modified Electrodes vs. Bulk Modified Screen-Printed Electrodes

Foster

Pillay

Metters

et al. 2014

Sensors

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Cobalt phthalocyanine (CoPC) compounds have been reported to provide electrocatalytic performances towards a substantial number of analytes. In these configurations, electrodes are typically constructed via drop casting the CoPC onto a supporting electrode substrate, while in other cases the CoPC complex is incorporated within the ink of a screen-printed sensor, providing a one-shot economical and disposable electrode configuration. In this paper we critically compare CoPC modified electrodes prepared by drop casting CoPC nanoparticles (nano-CoPC) onto a range of carbon based electrode substrates with that of CoPC bulk modified screen-printed electrodes in the sensing of the model analytes l-ascorbic acid, oxygen and hydrazine. It is found that no “electrocatalysis” is observed towards l-ascorbic acid using either of these CoPC modified electrode configurations and that the bare underlying carbon electrode is the origin of the obtained voltammetric signal, which gives rise to useful electroanalytical signatures, providing new insights into literature reports where “electrocatalysis” has been reported with no clear control experiments undertaken. On the other hand true electrocatalysis is observed towards hydrazine, where no such voltammetric features are witnessed on the bare underlying electrode substrate.

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Section: Resultsmentioning

confidence: 99%

Cobalt Phthalocyanine Modified Electrodes Utilised in Electroanalysis: Nano-Structured Modified Electrodes vs. Bulk Modified Screen-Printed Electrodes

Foster

Pillay

Metters

et al. 2014

Sensors

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“…In all the above examples the back-to-back configuration utilises the dead space of the screen-printed sensor and has been shown that the electrode can conveniently be modified with carbon nanotubes and has electroanalytical benefits [24].F urther expansion of the back-to-back configurationsw as undertaken with CoPC sinceh as previously been shown to be electrocatalytic towards hydrazine.H ydrazine has many uses within ap lethora of key industries as it has immense capabilities as ar educing agent, catalyst and explosive [ 25].H owevert here have been extensive reports focusing on its detrimental effects upon the human body,s uch as:i rritationo ft he eyes, nose,a nd throat, dizziness,h eadache,n ausea, pulmonary oedema,s eizures,a nd coma in humans [39][40][41].T he electrochemical determinationo fh ydrazine was next established using the B-CoPC-SPEsa nd the B 2 -CoPC-SPEs. Figure 5A shows ac omparison between both electrodes, with the back-to-back configuration exhibiting am uch higher peak current than witnessed previously throughout, in this case therei sa12.7 timesi mprovement com- www.electroanalysis.wiley-vch.depared to the B-CoPC-SPEs, this could be explainedb y the complex mechanism in whichC oPC reacts with hydrazine, such mechanism has been previously explained, by Fostere tal.…”

Section: Resultsmentioning

confidence: 99%

Back‐to‐Back Screen‐Printed Electroanalytical Sensors: Extending the Potential Applications of the Simplistic Design

et al. 2015

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[a] 1IntroductionOver recentd ecades the utilisationo fscreen-printed derived electrochemical sensorsh ave modernised the field of electroanalysis,w ith their ability to bridge the gap between laboratory experiments and in-field applications [1][2][3][4][5][6].T he incorporationo fs creen-printed electrodes has allowed scientists to take their knowledge and theoretical interpretations and place it into ad evice that possess great scales of economy allowing for simple,i nexpensive disposable electrochemical platforms [1,[7][8][9].T hrough carefuls elections of screen-printing inks and designs, unique sensors can be produced with different geometries such as screen-printed arrays [10][11][12][13],r ecessed electrodes [14] and microbands [15,16].I na ddition to this,t he ease of the mass production of screen-printed sensors enables their use as one-shot sensors, allowing possible contamination to be avoided, and alleviates the need for electrode pre-treatment as is the case for solid electrodes prior to theiru se [1,13,[17][18][19].Screen-printing technologies can be readily adapted to create sensors that can contain beneficial electrode materials such as carbon nanotubes whichh ave au seful geometric structure that provides the enhanced sensing of capsaicin [20] and the cobalt pthalocyanine mediator which has shown electrocatalytic signals towards hydrazine [21].A dditionally upon carefuls election of the screen-printing inks,s ensors can be readily produced containing metallic compoundss uch as palladium [19] Recently the concept of the back-to-back screen-printed graphite electrodec onfiguration has been introduced for the first timew hereathree-electrode system is printed upon both sides of ap olyester substrate,a sp resented in Figure 1[ 24].T his novel electrochemical sensor has been demonstrated to be usefulf or the electroanalytical sensing of NADH and nitritee xhibiting at wo-fold increase in the analytical sensitivity,a dditionally with improvements in the limit of detection [ 24].I nt his paper we build upon such report of the back-to-back electrode configuration [24] and extend this concept to the electroanalyticald etection of dopamine and capsaicin using as ingle walled carbon nanotube (CNT)b ack-to-back sensor and ac obalt phthalocyanine (CoPC)m ediated bulk modified back-to back sensor for the electrocatalytic detectiono fhydrazine for the first time.Abstract:I no ur previous paper (Analyst, 2014, 139, 5339) we introduced the concept of the back-to-back electrochemical design where the commonly overlooked back of screen-printed electrodesa re utilised to provide electroanalyticale nhancements in screen-printede lectroanalytical sensors.I nt his configuration the overall sensor comprises of af lexible polyester substrate which has at otal of two working,c ounter and reference electrodes presento nt he sensor,w ith as et of electrodes on each side of the substrate. Thes ensors are designed to allow for acommonly shared electrical connection to the potentiostat and do not require any specialised con...

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“…The obtained value for k s and those reported for other modifiers before are in agreement with each other. The value of k s described in this research was compared with other works [22][23][24][25]. To obtain the kinetic parameters α c (cathodic transfer coefficients) and α a = (1 − α c ) (anodic transfer coefficients) of the slopes of Figure 2, plots can be used.…”

Section: Electrocatalytic Oxidation Of Str At the Ob/snps/go/spementioning

confidence: 99%

Simultaneous Determination of Streptomycin and Oxytetracycline Using a Oracet-Blue/Silver-Nanoparticle/Graphene-Oxide/Modified Screen-Printed Electrode

2020

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In this paper, an electrochemical technique is introduced for the determination of streptomycin (STR) in the presence of oxytetracycline (OTC) in milk samples. A novel bifunctional modified screen-printed electrode (SPE) modified with oracet blue, silver nanoparticles, and graphene oxide (OB/SNPs/GO/SPE) was fabricated. The modified electrode plays a catalyzer role for electrooxidation of STR at pH = 7.0 and reveals a facile a separation between the oxidation peaks of STR and OTC. Calculation of kinetic parameters such as the electron transfer coefficient α and the heterogeneous rate constant k´ of STR at the OB/SNPs/GO/SPE as 8.1 ± 0.07 cm s−1 and 0.32 have been obtained based on the theoretical model of Andrieux and Saveant. A differential pulse voltammetric measurement demonstrates two linear dynamic ranges, 0.4 to 240.0 nM and 240.0 to 720.0 nM and a detection limit of 0.17 nM for STR. The sensitivities of the OB/SNPs/GO/SPE towards the oxidation of STR in the absence and presence of OTC were 2.625 × 10−1 and 2.633 × 10−1 µA/µM, respectively.

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A study of the electrochemical behavior of an oxadiazole derivative electrodeposited on multi-wall carbon nanotube-modified electrode and its application as a hydrazine sensor

Cited by 30 publications

References 51 publications

Cobalt Phthalocyanine Modified Electrodes Utilised in Electroanalysis: Nano-Structured Modified Electrodes vs. Bulk Modified Screen-Printed Electrodes

Cobalt Phthalocyanine Modified Electrodes Utilised in Electroanalysis: Nano-Structured Modified Electrodes vs. Bulk Modified Screen-Printed Electrodes

Back‐to‐Back Screen‐Printed Electroanalytical Sensors: Extending the Potential Applications of the Simplistic Design

Simultaneous Determination of Streptomycin and Oxytetracycline Using a Oracet-Blue/Silver-Nanoparticle/Graphene-Oxide/Modified Screen-Printed Electrode

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