An electrochemical biosensor based on Au nanoparticles decorated reduced graphene oxide for sensitively detecting of Hg2+

Zhang, Yanyan; Chu, Guanglei; Guo, Yemin; Zhao, Wei; Yang, Qingqing

doi:10.1016/j.jelechem.2018.07.053

Cited by 17 publications

(8 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the presence of the cation, the substrate is cut at the cleavage site (deoxyguanosine) and the fragments are released, leaving a part of the substrate strand immobilized on the sensor. In this regard, DNAzymes were exploited for fluorescent and electrochemical sensors for the determination of Pb(II) [9,28,45,63,158,166,167,[172][173][174][175]179,180], Cu(II) [133], Cd(II) [126], Hg(II) [40,135,138], Mg(II) [42], and Ni(II) [157]. In these procedures, substrate strands were labeled with electrochemical and fluorescent probes that showed responses after their disassembly from the platform.…”

Section: Affinitymentioning

confidence: 99%

“…A common modification of biosensing platforms has been carried out with reduced graphene derivatives [9,28,40,46,69,98,99,135,141,161,167,173], which show high thermal, chemical, and mechanical stability [64]; good biocompatibility [135]; and high conductivity, especially reduced graphene oxide. As an example, the current signals of cyclic voltammograms obtained with a ferrocyanide solution increased two-fold after coating the GCE electrode with reduced graphene oxide, aiming at the immobilization of polynucleotides for Pb(II) determination [167].…”

Section: Electrochemical Sensorsmentioning

confidence: 99%

“…Modifications were carried out with GNP [7,28,36,40,44,48,63,71,73,76,81,131,133,135,139,142,155,158,161,163,167,171,172,[175][176][177], CNTs [11,19,30,69,107,117,162], silver nanoparticles (SNP) [51,138,159], mesoporous carbon [62,73], fullerenes [175], and quantum dots [124,157,184,186]. Coating GE biosensors with GNPs [135,155] aimed to increase the surface area to enhance its sensitivity. The response of the determination of Hg(II) increased up to 60% with a GNP-coated electrode compared to a bare GE [135].…”

Section: Nanomaterials In Biosensing Detectionmentioning

confidence: 99%

See 2 more Smart Citations

An overview of Structured Biosensors for Metal Ions Determination

et al. 2021

View full text Add to dashboard Cite

The determination of metal ions is important for nutritional and toxicological assessment. Atomic spectrometric techniques are highly efficient for the determination of these species, but the high costs of acquisition and maintenance hinder the application of these techniques. Inexpensive alternatives for metallic element determination are based on dedicated biosensors. These devices mimic biological systems and convert biochemical processes into physical outputs and can be used for the sensitive and selective determination of chemical species such as cations. In this work, an overview of the proposed biosensors for metal ions determination was carried out considering the last 15 years of publications. Statistical data on the applications, response mechanisms, instrumentation designs, applications of nanomaterials, and multielement analysis are herein discussed.

show abstract

Section: Affinitymentioning

confidence: 99%

Section: Electrochemical Sensorsmentioning

confidence: 99%

Section: Nanomaterials In Biosensing Detectionmentioning

confidence: 99%

See 1 more Smart Citation

An overview of Structured Biosensors for Metal Ions Determination

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Incubation of a DNA probe in Au NPs-rGO Hg(II) [124] ssDNA/p-rGO/AuNPs/CILE ssDNA Covalent bonding hly gene of Listeria monocytogenes [125] incorporation of biomolecules. BNPs further improve device sensitivity, because the optical, catalytic, and electrochemical properties of the BNPs are different than those of monometallic NPs.…”

Section: Graphene-based Materialsmentioning

confidence: 99%

Structure, Properties, and Electrochemical Sensing Applications of Graphene‐Based Materials

et al. 2020

View full text Add to dashboard Cite

Owing to their versatility and unique characteristics, graphene‐based materials have been used extensively for the development of electrochemical sensors and biosensors. The key to the maximum potential of these materials is the understanding of the role their structure plays in their modification processes. Herein, we summarize some structural characteristics of graphene oxide (GO) and reduced graphene oxide (rGO) and explore different surface modification methods for electrochemical sensing applications. surveyed the most recent applications of these materials as (bio)sensors, particularly for environmental monitoring and health‐related applications, such as quantification of biomarkers and metabolites and detection of cancer cells. The low detection limits, selectivity toward target molecules, and robustness of GO‐ and rGO‐based electrodes render them critical materials for the preparation of sensors for routine analysis and monitoring.

show abstract

“…A number of studies have been published using MWCNTs-based biosensors to detect different substances and they all showed remarkable results [15,16,17,18,19,20,21,22]. Meanwhile, not satisfied with the use of pure carbon materials, scientists focused on nanocomposite with metal nanoparticles such as Au [23], Ag [24], CuO [25], Pt [26], and Pd [27], so as to further improve their sensitivity, conductivity, and catalytic properties. Among these, platinum nanoparticles (PtNPs) offer many advantages, including good conductivity and a strong ability to catalyze molecules.…”

Section: Introductionmentioning

confidence: 99%

Electrochemical Detection for Uric Acid Based on β-Lactoglobulin-Functionalized Multiwall Carbon Nanotubes Synthesis with PtNPs Nanocomposite

et al. 2019

View full text Add to dashboard Cite

In this work, a simple and highly selective electrochemical biosensor for determination of uric acid (UA) is synthesized by using β-lactoglobulin (BLG)-functionalized multiwall carbon nanotubes (MWCNTs) and a platinum nanoparticles (PtNPs) nanocomposite. Urate oxidase (UOx) can oxidize uric acid to hydrogen peroxide and allantoin, which provides a good opportunity for electrochemical detection for UA. Under the optimized conditions, the current changes by the UOx/Bull Serum Albumin (BSA)/BLG-MWCNTs-PtNPs/Glassy Carbon (GC) electrode with the electrochemical method was proportional to the concentration of UA. According to experiments, we obtained a linear response with a concentration range from 0.02 to 0.5 mM and achieved a high sensitivity of 31.131 μA mM−1 and a low detection limit (0.8 μΜ). Meanwhile, nanoparticles improved the performance of the biosensor and combined with BLG not only prevented the accumulation of composite nanomaterials, but also provided immobilization of uricase through electrostatic adsorption. This improves the stability and gives the constructed electrode sensing interface superior performance in UA detection.

show abstract

An electrochemical biosensor based on Au nanoparticles decorated reduced graphene oxide for sensitively detecting of Hg2+

Cited by 17 publications

References 25 publications

An overview of Structured Biosensors for Metal Ions Determination

An overview of Structured Biosensors for Metal Ions Determination

Structure, Properties, and Electrochemical Sensing Applications of Graphene‐Based Materials

Electrochemical Detection for Uric Acid Based on β-Lactoglobulin-Functionalized Multiwall Carbon Nanotubes Synthesis with PtNPs Nanocomposite

Contact Info

Product

Resources

About