Electrochemical Glucose Biosensor of Platinum Nanospheres Connected by Carbon Nanotubes

Claussen, Jonathan C.; Kim, Sungwon S.; Haque, Aeraj; Artiles, Mayra S.; Porterfield, D. Marshall; Fisher, Timothy S.

doi:10.1177/193229681000400211

Cited by 51 publications

(26 citation statements)

References 41 publications

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“…Commercial sensor for the test of glucose mainly relies on immobilized enzyme due to its good selectivity and high sensitivity. However, this expensive enzymatic test cannot be used in a severe environment and the detecting accuracy is greatly affected by many factors including temperature, humidity, pH and toxic chemicals because of the activity of the enzyme [4]. Alternatively, nonenzymatic electrochemical sensors are paid more and more attention because of their high stability and low cost.…”

Section: Introductionmentioning

confidence: 99%

3D porous metal-organic framework as an efficient electrocatalyst for nonenzymatic sensing application

Zhang

et al. 2015

Talanta

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Section: Introductionmentioning

confidence: 99%

3D porous metal-organic framework as an efficient electrocatalyst for nonenzymatic sensing application

Zhang

et al. 2015

Talanta

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“…Figure 3a). 49 Initially, the incorporation of PtNPs on the surface of the graphene improved the biosensor sensitivity to paraoxon (note the electrode was functionalized with PTE for this experiment, see section 3.1.3) as the number of deposition pulses or cycles increases (0−75 cycles corresponding to 195 and 275 nA/μM, respectively, Figure 3b). However, after 75 electrodeposition cycles, larger ridge-like macrostructures were formed (Supporting Information Figure S2), which significantly decreases the sensitivity (1000 cycles corresponding to 32 nA/μM, Figure 3b).…”

Section: 39mentioning

confidence: 99%

Printed Graphene Electrochemical Biosensors Fabricated by Inkjet Maskless Lithography for Rapid and Sensitive Detection of Organophosphates

Hondred

Breger

Alves

et al. 2018

ACS Appl. Mater. Interfaces

116

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Solution phase printing of graphene-based electrodes has recently become an attractive low-cost, scalable manufacturing technique to create in-field electrochemical biosensors. Here, we report a graphene-based electrode developed via inkjet maskless lithography (IML) for the direct and rapid monitoring of triple-O linked phosphonate organophosphates (OPs); these constitute the active compounds found in chemical warfare agents and pesticides that exhibit acute toxicity as well as long-term pollution to soils and waterways. The IML-printed graphene electrode is nano/microstructured with a 1000 mW benchtop laser engraver and electrochemically deposited platinum nanoparticles (dia. ∼25 nm) to improve its electrical conductivity (sheet resistance decreased from ∼10 000 to 100 Ω/sq), surface area, and electroactive nature for subsequent enzyme functionalization and biosensing. The enzyme phosphotriesterase (PTE) was conjugated to the electrode surface via glutaraldehyde cross-linking. The resulting biosensor was able to rapidly measure (5 s response time) the insecticide paraoxon (a model OP) with a low detection limit (3 nM), and high sensitivity (370 nA/μM) with negligible interference from similar nerve agents. Moreover, the biosensor exhibited high reusability (average of 0.3% decrease in sensitivity per sensing event), stability (90% anodic current signal retention over 1000 s), longevity (70% retained sensitivity after 8 weeks), and the ability to selectively sense OP in actual soil and water samples. Hence, this work presents a scalable printed graphene manufacturing technique that can be used to create OP biosensors that are suitable for in-field applications as well as, more generally, for low-cost biosensor test strips that could be incorporated into wearable or disposable sensing paradigms.

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“…Recently, Pt NP-decorated MWNT (Pt-MWNT) electrodes reported promising electrocatalytic activity for the ethanol or methanol oxidation 16,17) and non-enzymatic glucose sensing. [18][19][20] In our previous work, a Pt-MWNT electrode was successfully formed on a porous polytetrafluoroethylene (PTFE) membrane through the filtration method, and was proved to have good electro-catalytic activity in hydrogen detection.…”

Section: -15)mentioning

confidence: 99%

Fabrication of Pt-MWNT/Nafion Electrodes by Low-Temperature Decal Transfer Technique for Amperometric Hydrogen Detection

Rashid¹,

Jun²,

Kim³

2014

Journal of the Korean Electrochemical Society

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: A Pt nanoparticle-decorated multiwall carbon nanotube (Pt-MWNT) electrode was prepared on Nafion by a hot-pressing at relatively low temperature. This electrode exhibited an intricate entangled, nanoporous structure as a result of gathering highly anisotropic PtMWNTs. Individual Pt nanoparticles were confirmed to have a polycrystalline face-centered cubic structure with an average crystal size of around 3.5 nm. From the cyclic voltammograms for hydrogen redox reactions, the Pt-MWNT electrode was found to have a similar electrochemical behavior to polycrystalline Pt, and a specific electrochemical surface area of 2170 cm 2 mg −1. Upon exposure to hydrogen analyte, the Pt-MWNT/Nafion electrode demonstrated a very high sensitivity of 3.60 µA ppm −1 and an excellent linear response over the concentration range of 100-1000 ppm. Moreover, this electrode was also evaluated in terms of response and recovery times, reproducibility, and long-term stability. Obtained results revealed good sensing performance in hydrogen detection.

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Electrochemical Glucose Biosensor of Platinum Nanospheres Connected by Carbon Nanotubes

Abstract: Abbreviations: (BSA) bovine serum albumin, (CNT)

Cited by 51 publications

References 41 publications

3D porous metal-organic framework as an efficient electrocatalyst for nonenzymatic sensing application

3D porous metal-organic framework as an efficient electrocatalyst for nonenzymatic sensing application

Printed Graphene Electrochemical Biosensors Fabricated by Inkjet Maskless Lithography for Rapid and Sensitive Detection of Organophosphates

Fabrication of Pt-MWNT/Nafion Electrodes by Low-Temperature Decal Transfer Technique for Amperometric Hydrogen Detection

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