Determination of o-Aminophenol by Novel Co(II) Phthalocyanine with Appliance of Composite MWCNTs

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2022-12-22 DOI:10.1007/s12678-022-00804-9

T. M. Sharanakumar, Mounesh, N Y Praveen Kumar, KR Venugopala Reddy, A. Sunilkumar

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Abstract

A novel peripherally tetra naphthol substituted Co(II) phthalocyanine (NCoPc) was synthesized by the reaction of naphthol linked phthalonitrile, and cobalt chloride, in the presence of catalytic amount of DMF, DBU, and K₂CO₃. The NCoPc and its composite with MWCNTs were characterized by FTIR, NMR, UV–Vis, XRD, TGA, and mass spectroscopic techniques. The NCoPc and NCoPc-MWCNTs-coated glassy carbon electrodes (GCEs) were used to electrochemically detect and quantify ortho amino phenol (oAP) oAP in aqueous solutions. Cyclic voltammetric data established a linear response between the oAP oxidation current (ipa) and its molar concentration (10–190 μM). The limit of detection (LoD) of the two modified electrodes was comparable (1.5 μM and 25 nM, respectively). The NCoPc and NCoPc-MWCNTs-GCEs (in the concentration range of 10–160 μM) were both low and comparable. The LoD values for oAP at the NCoPc-GCE and NCoPc-MWCNTs by DPV were 1.2 µM and 42 nM and CA were 10 nM and 6.5 nM, respectively. They are exhibited good electrocatalytic activity towards the oxidation of oAP, and this was aided by the improved conductivity of the composite modifiers.

Graphical Abstract

Abstract Image

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复合纳米碳纳米管应用新型Co(II)酞菁测定邻氨基酚

在DMF、DBU和K2CO3的催化作用下，以萘酚连接的邻苯二腈和氯化钴为原料，合成了一种新型的外周四萘酚取代的Co(II)酞菁(NCoPc)。采用FTIR、NMR、UV-Vis、XRD、TGA和质谱等技术对NCoPc及其与MWCNTs的复合材料进行了表征。采用NCoPc和NCoPc- mwcnts包覆的玻碳电极(GCEs)对水溶液中的邻位氨基酚(oAP)进行了电化学检测和定量。循环伏安数据表明oAP氧化电流(ipa)与其摩尔浓度(10 ~ 190 μM)呈线性关系。两种修饰电极的检出限(LoD)相当(分别为1.5 μM和25 nM)。NCoPc和NCoPc- mwcnts - gce(浓度范围在10 ~ 160 μM)均较低且具有可比性。DPV对NCoPc-GCE和NCoPc-MWCNTs的oAP LoD值分别为1.2µM和42 nM, CA为10 nM和6.5 nM。它们对oAP的氧化表现出良好的电催化活性，这得益于复合改性剂的导电性的提高。图形抽象

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来源期刊

Electrocatalysis CHEMISTRY, PHYSICAL-ELECTROCHEMISTRY

CiteScore

4.80

自引率

6.50%

发文量

审稿时长

>12 weeks

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