Molecularly imprinted electrochemical sensor based on the synergic effect of nanoporous gold and copper nanoparticles for the determination of cysteine

Yang, Shaoming; Zheng, Yue; Zhang, Xiaorong; Ding, Shaoqing; Li, Lingling; Zha, Wenling

doi:10.1007/s10008-016-3213-8

Cited by 27 publications

(13 citation statements)

References 43 publications

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“…As shown in Fig. 1e, the elemental composition consisted mainly of Au, C, O, and N. The N element was derived from CS, which confirms the combination of CS on the AuNC surface [28,29]. The results were also confirmed by a UV spectrophotometer.…”

Section: Preparation and Characterization Of The Mip-modified Electrodementioning

confidence: 54%

A molecularly imprinted electrochemical sensor based on Au nanocross-chitosan composites for detection of paraquat

Shan

Habimana

et al. 2019

J Solid State Electrochem

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A novel electrochemical sensor for paraquat (PQ) detection based on molecularly imprinted polymer (MIP) membranes on a glassy carbon electrode (GCE) modified with Au nanocrosses-chitosan (AuNCs-CS) was constructed. P-Aminothiophenol (p-ATP) and 4,4′-bipyridine template were assembled on the surface of the modified GCE by the formation of Au-S bonds and hydrogen-bonding interactions, followed by polymer membrane formation by the electropolymerization in a polymer solution containing p-ATP, HAuCl 4 , tetrabutylammonium perchlorate (TBAP), and the template molecule 4,4′-bipyridine. The asconstructed molecularly imprinted sensor (MIP-AuNC-CS) was characterized by differential pulse voltammetry (DPV), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). This is the first time that molecularly imprinted polymer technology has been integrated with a modified AuNCs-CS to electrochemically detect PQ. The linear response of the MIP-AuNC-CS sensor was in the range from 1 × 10 −14 to 1 × 10 −10 mol L −1 , and the limit of detection was 2.3 × 10 −15 mol L −1 . This sensor showed high-speed real-time detection capability, low sample consumption, high sensitivity, low interference, and good stability characteristics, and was proven to detect PQ.

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Section: Preparation and Characterization Of The Mip-modified Electrodementioning

confidence: 54%

A molecularly imprinted electrochemical sensor based on Au nanocross-chitosan composites for detection of paraquat

Shan

Habimana

et al. 2019

J Solid State Electrochem

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“…Indeed, the some recent works are focused on the combination of Nickel, Silver, Platinum and Copper nanomaterials modified electrodes in MIP sensors as indicated in Table .…”

Section: Nanomaterials Combined Mip Based Electrochemical Sensorsmentioning

confidence: 99%

Recent Advances in Electrochemical Sensors Based on Molecularly Imprinted Polymers and Nanomaterials

2018

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This review focuses on the recent achievement during period of 2013–2018 related to the electrochemical sensors based on molecularly imprinted polymers (MIPs) combined with nanomaterials for various kinds of applications. MIPs based electrochemical sensors have found a great interest due to their high stability, short time required for electropolymerization, and high specificity towards the target analyte. The sensitivity is considered as one of the important parameter in electrochemical sensing strategies that should be improved by the combination of highly conductive nanomaterials with selective MIPs. In general, the most employed nanomaterials are magnetic nanoparticles, gold nanoparticles (AuNPs), carbon nanotubes and graphene. This review discusses the main current achievement as well as the current challenges regarding the development of biomimetic sensors in electroanalysis.

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“…Electrolyte solution containing hydrogen tetrachloroaurate as a source of gold and lead acetate can be used to directly electrodeposit np-Au on a glassy carbon (GC) electrode at low cathodic potential of −0.5 V (vs. Ag/AgCl), increasing the surface area by nearly 16 times [ 38 ]. However, a higher cathodic potential of up to −4.0 V versus Ag/AgCl applied for different times was used to prepare np-Au foam from 0.1 M HAuCl 4 to 1M NH 4 Cl electrolyte on Pt/Ti/Si electrodes [ 39 ].…”

Section: Preparation Of Np-au Using Electrochemical Techniquesmentioning

confidence: 99%

“…The sensitivity and selectivity of np-Au-based glucose sensor can also be enhanced by modifying it with different metals (e.g., Ni, Cu, Pt, Ru, and Pd) [ 129 , 130 , 131 , 132 , 133 ] metal oxides (e.g., CuO, Ni(OH) 2 and Co 3 O 4 ) [ 134 , 135 , 136 ] and alloys (e.g., PtCo) [ 137 ]. As-modified np-Au can also be used for the detection of varieties of other analytes, such as L-cysteine, by molecularly imprinted polymer and Cu NPs that are immobilized on np-Au [ 38 ], hydrogen peroxide and hydrazine by np-Au prepared on Ni foam [ 138 ], and Cr(VI) by depositing Ag NPs on np-Au [ 139 ].…”

Section: Electrochemical Biosensingmentioning

confidence: 99%

Preparation, Modification, Characterization, and Biosensing Application of Nanoporous Gold Using Electrochemical Techniques

et al. 2018

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Nanoporous gold (np-Au), because of its high surface area-to-volume ratio, excellent conductivity, chemical inertness, physical stability, biocompatibility, easily tunable pores, and plasmonic properties, has attracted much interested in the field of nanotechnology. It has promising applications in the fields of catalysis, bio/chemical sensing, drug delivery, biomolecules separation and purification, fuel cell development, surface-chemistry-driven actuation, and supercapacitor design. Many chemical and electrochemical procedures are known for the preparation of np-Au. Recently, researchers are focusing on easier and controlled ways to tune the pores and ligaments size of np-Au for its use in different applications. Electrochemical methods have good control over fine-tuning pore and ligament sizes. The np-Au electrodes that are prepared using electrochemical techniques are robust and are easier to handle for their use in electrochemical biosensing. Here, we review different electrochemical strategies for the preparation, post-modification, and characterization of np-Au along with the synergistic use of both electrochemistry and np-Au for applications in biosensing.

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Molecularly imprinted electrochemical sensor based on the synergic effect of nanoporous gold and copper nanoparticles for the determination of cysteine

Cited by 27 publications

References 43 publications

A molecularly imprinted electrochemical sensor based on Au nanocross-chitosan composites for detection of paraquat

A molecularly imprinted electrochemical sensor based on Au nanocross-chitosan composites for detection of paraquat

Recent Advances in Electrochemical Sensors Based on Molecularly Imprinted Polymers and Nanomaterials

Preparation, Modification, Characterization, and Biosensing Application of Nanoporous Gold Using Electrochemical Techniques

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