Graphene–palladium nanowires based electrochemical sensor using ZnFe2O4–graphene quantum dots as an effective peroxidase mimic

Liu, Weiyan; Yang, Hongmei; Ma, Chao; Ding, Yanan; Ge, Shenguang; Yu, Jinghua; Yan, Mei

doi:10.1016/j.aca.2014.08.054

Cited by 51 publications

(22 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Liu et al [131] developed an electrochemical DNA sensor by using a modified GCE and peroxidase-like magnetic ZnFe 2 O 4 /GQD nanohybrid mimicking an enzyme label (Fig. 10).…”

Section: Aptasensorsmentioning

confidence: 99%

Graphene quantum dots in analytical science

Benítez–Martínez

Valcárcel

2015

TrAC Trends in Analytical Chemistry

202

View full text Add to dashboard Cite

“…Liu et al [131] developed an electrochemical DNA sensor by using a modified GCE and peroxidase-like magnetic ZnFe 2 O 4 /GQD nanohybrid mimicking an enzyme label (Fig. 10).…”

Section: Aptasensorsmentioning

confidence: 99%

Graphene quantum dots in analytical science

Benítez–Martínez

Valcárcel

2015

TrAC Trends in Analytical Chemistry

202

View full text Add to dashboard Cite

“…Labelling with CNTs loaded with enzymes, semiconductor quantum dots and electroactive intercalators have been carried out for the enhancement of the electrochemical signal; recent works have also shown how CNT labels would amplify the impedimetric signal for nucleic acid detection . While CDs have been used largely as the platform for biosensing, a recent work has also reported the use of graphene quantum dots nano‐hybrid material as a mimic enzymatic label …”

Section: Discussionmentioning

confidence: 99%

Advances on the Use of Graphene as a Label for Electrochemical Biosensors

Bonanni

2020

ChemElectroChem

View full text Add to dashboard Cite

There has been an overwhelming interest in the use of graphene and its derivatives for electrochemical biosensors in the last decade. Although the majority of the works describe the use of these materials as platform for the immobilization of the biorecognition element, there is a significant, often unrecognized, research effort that has shown how graphene materials can also beneficially serve as signaling labels for biosensing. Owing to its intrinsic electroactivity and small size, nano‐graphene oxide, for example, has been used for this purpose, where the working signal arises from the reduction of the oxygen functionalities on the material surface. In other approaches, graphene labels modified with electroactive probes were also used to promote the signal generation. This Minireview will illustrate how the unique electrochemical and structural features make graphene a very promising material for the detection of the biorecognition event. In addition, an overview will be provided, showing the plethora of options offered by graphene and its derivatives as labels for signal generation and enhancement.

show abstract

“…An electrochemical DNA sensor was introduced by using peroxidase-like magnetic ZnFe 2 O 4 -and GQDs hybrid nanomaterial [267]. This hybrid nanomaterial was prepared using a photo-Fenton reaction that was employed as an enzyme-mimicking label and also as a carrier for labeling complementary ssDNA.…”

Section: Voltammetric Gqd-sensorsmentioning

confidence: 99%

Applications of Graphene Quantum Dots in Biomedical Sensors

Mansuriya

Altıntaş

2020

Sensors

190

View full text Add to dashboard Cite

Due to the proliferative cancer rates, cardiovascular diseases, neurodegenerative disorders, autoimmune diseases and a plethora of infections across the globe, it is essential to introduce strategies that can rapidly and specifically detect the ultralow concentrations of relevant biomarkers, pathogens, toxins and pharmaceuticals in biological matrices. Considering these pathophysiologies, various research works have become necessary to fabricate biosensors for their early diagnosis and treatment, using nanomaterials like quantum dots (QDs). These nanomaterials effectively ameliorate the sensor performance with respect to their reproducibility, selectivity as well as sensitivity. In particular, graphene quantum dots (GQDs), which are ideally graphene fragments of nanometer size, constitute discrete features such as acting as attractive fluorophores and excellent electro-catalysts owing to their photo-stability, water-solubility, biocompatibility, non-toxicity and lucrativeness that make them favorable candidates for a wide range of novel biomedical applications. Herein, we reviewed about 300 biomedical studies reported over the last five years which entail the state of art as well as some pioneering ideas with respect to the prominent role of GQDs, especially in the development of optical, electrochemical and photoelectrochemical biosensors. Additionally, we outline the ideal properties of GQDs, their eclectic methods of synthesis, and the general principle behind several biosensing techniques.

show abstract

Graphene–palladium nanowires based electrochemical sensor using ZnFe2O4–graphene quantum dots as an effective peroxidase mimic

Cited by 51 publications

References 30 publications

Graphene quantum dots in analytical science

Graphene quantum dots in analytical science

Advances on the Use of Graphene as a Label for Electrochemical Biosensors

Applications of Graphene Quantum Dots in Biomedical Sensors

Contact Info

Product

Resources

About