WO3 nanostructures facilitate electron transfer of enzyme: Application to detection of H2O2 with high selectivity

Deng, Zhiyong; Gong, Yan; Luo, Yongping; Tian, Yang

doi:10.1016/j.bios.2008.12.037

Cited by 54 publications

(18 citation statements)

References 55 publications

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“…The NMO based electrodes such as MnO 2 /chitosan [10], SWCNT/Fe 2 O 3 [11], Cu 2 O/graphene [12] and SiO 2 /ZrO 2 /methylene blue [13] have been explored for the detection of DA in the presence of AA. Among various metal oxides, tungsten trioxide (WO 3 ), an n-type indirect wide band gap semiconductor (2.4 -3.6 eV) has been used for chemical sensing of gases like NH 3 , H 2 S, N x O x , SO 2 and CO [14,15]. But, there are only limited reports on the application of WO 3 nanoparticles (NPs) for biomolecule detection.…”

Section: Introductionmentioning

confidence: 99%

WO3 nanoparticles based direct electrochemical dopamine sensor in the presence of ascorbic acid

Anithaa

Lavanya

Asokan

et al. 2015

Electrochimica Acta

151

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Section: Introductionmentioning

confidence: 99%

WO3 nanoparticles based direct electrochemical dopamine sensor in the presence of ascorbic acid

Anithaa

Lavanya

Asokan

et al. 2015

Electrochimica Acta

151

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“…Direct electrochemistry of hemoglobin was observed at carbon nanotube interface for H 2 O 2 detection, where the adsorbing hemoglobin -acting as mediator-could transfer electrons directly at carbon nanotube interface compared with common carbon material (93). The negatively-charged nano-structured WO 3 surface at neutral pH adsorbed Cyt c with positive charge which facilitated direct and fast electron transfer; the proposed electrochemical method for H 2 O 2 detection was claimed to be free from not only common anodic interferences like ascorbic acid, uric acid, and dopamine metabolite: 3,4-dihydroxyphenylacetic acid, etc., but also cathodic interference of oxygen (94). In addition to the use of Pt, Au and Pd as catalysts for electrochemical detection of H 2 O 2 (92,95,96), other nano-sized catalytic materials such as MnO 2 (97) and CuO (98)(99)(100)(101) were also investigated as alternatives, with good electrochemical response to H 2 O 2 .…”

Section: Nanoparticle-based Methods For the Detection Of Hydrogen Permentioning

confidence: 99%

Nanotechnological Methods of Antioxidant Characterization

Apak

Çapanoğlu

Arda

2015

ACS Symposium Series

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tr. Fax: +90 212 4737180.Nanoparticle (NP)-based analytical methods have displayed a rapid development at the interface of analytical chemistry, food chemistry, biochemistry, and nanotechnology, together with their related industries. For the design of novel antioxidant assays, NPs can be used as colorimetric or electrochemical probes, components in chemical and biological detectors, and radical generation systems. Most applications of NPs used as probes for food chemicals and biochemicals are associated with the use of Au, Ag, magnetite (Fe 3 O 4 ) or titania (TiO 2 ) nanoparticles and quantum dots. Chemical reduction-based nanotechnological colorimetric assays of antioxidant capacity make use of the formation or enlargement of noble metal nanoparticles (AuNPs, AgNPs, etc.) upon reaction of Au(III) or Ag(I) salts with antioxidant compounds acting as chemical reductants.In this chapter, NP-based methods for the measurement of total antioxidant capacity involving chemical reduction together with the methods for the detection of reactive oxygen and nitrogen species (ROS/RNS) and determination of their scavenging activity have been reviewed. Within this scope, spectroscopic methods associated with electron transfer and noble metal nanoparticles as well as electroanalytical biosensor-originated antioxidant activity/capacity methods

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“…Because highly conductive materials like metals or graphite produce an undesirable degradation of the proteinadsorbed on those substrates, metal oxide semiconductors (TiO 2 , WO 3 , SnO 2 , ZnO, and tin-doped ITO) have ignited significant interest in the immobilization of biomolecules such as glucose dehydrogenase (GDH) and sulfite oxidase [279] or cytochrome c [280-282] for not only their conductivity but also their transparency (enhancing their optical properties). It is important to point out that while ITO is the most widely used substrate, the relatively low abundance of indium has sparked the development of promising materials with lower indium content[283, 284].…”

Section: Adsorbedproteinsmentioning

confidence: 99%

Protein adsorption onto nanomaterials for the development of biosensors and analytical devices: A review

Bhakta

Evans

Benavidez

et al. 2015

Analytica Chimica Acta

222

116

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An important consideration for the development of biosensors is the adsorption of the bio recognition element to the surface of a substrate. As the first step in the immobilization process, adsorption affects most immobilization routes and much attention is given into the research of this process to maximize the overall activity of the bio sensor. The use of nanomaterials, specifically nanoparticles and nanostructured films, offers advantageous properties that can be fine-tuned for interaction with specific proteins to maximize activity, minimize structural changes, and enhance the catalytic step. In the biosensor field, protein-nanomaterial interactions are an emerging trend that span across many disciplines. This review addresses recent publications about the proteins most frequently used, their most relevant characteristics, and the conditions required to adsorb them to nanomaterials. When relevant and available, subsequent analytical figures of merits are discussed for selected biosensors. The general trend amongst the research papers allows concluding that the use of nanomaterials has already provided significant improvements in the analytical performance of many biosensors and that this research field will continue to grow.

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WO3 nanostructures facilitate electron transfer of enzyme: Application to detection of H2O2 with high selectivity

Cited by 54 publications

References 55 publications

WO3 nanoparticles based direct electrochemical dopamine sensor in the presence of ascorbic acid

WO3 nanoparticles based direct electrochemical dopamine sensor in the presence of ascorbic acid

Nanotechnological Methods of Antioxidant Characterization

Protein adsorption onto nanomaterials for the development of biosensors and analytical devices: A review

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