A novel non-enzymatic hydrogen peroxide biosensor based on ultralong manganite MnOOH nanowires

Cao, Xia; Wang, Ning; Wang, Long; Mo, Changpan; Xü, Yao; Cai, Xiaolan; Guo, Lin

doi:10.1016/j.snb.2010.03.087

Cited by 65 publications

(23 citation statements)

References 24 publications

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“…7,8 Their redox behavior indicates that manganese oxides may potentially act as sensors as well. 9 Despite the importance of manganese oxides in geochemical processes and in technological applications, their surface structures and properties have not been well studied. For example, recent reports indicate that manganese oxides can oxidize Cr III to toxic Cr VI10À17 and toxic As III to As V .…”

Section: ' Introductionmentioning

confidence: 99%

First-Principles Calculations of Clean, Oxidized, and Reduced β-MnO₂ Surfaces

Oxford

Chaka

2011

J. Phys. Chem. C

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Manganese oxides and hydroxides are found in many geological settings and occur in the form of more than 30 minerals. 1 They participate in a variety of redox and acid/base reactions in the environment because they form interfacial barriers on soils and sediments in marine and freshwater environments and on rock and other mineral surfaces. The ability of manganese oxides to adsorb and oxidize heavy metal pollutants, such as chromium and arsenic, has been recognized for decades. Because of their ubiquity in the environment and their reactivity, these minerals serve as an important control in regulating the concentrations of groundwater contaminants. Manganese oxides are also commercially relevant as the cathode material in alkaline batteries 2,3 and have been studied for use in catalytic applications 4À6 and water treatment media. 7,8 Their redox behavior indicates that manganese oxides may potentially act as sensors as well. 9 Despite the importance of manganese oxides in geochemical processes and in technological applications, their surface structures and properties have not been well studied. For example, recent reports indicate that manganese oxides can oxidize Cr III to toxic Cr VI10À17 and toxic As III to As V . 18À22 Although these studies aimed at understanding the role of manganese oxides in the oxidation of heavy metals, it remains unclear which manganese species participate in the process and which manganese oxide surfaces are relevant for redox chemistry. A fundamental knowledge of the surface structures and their redox properties at environmentally relevant conditions is the necessary groundwork to be laid before complex interactions between heavy metal ions and manganese oxide surfaces can be fully delineated.A small number of studies have examined manganese oxide surfaces. The earliest work demonstrated reduction 23 and oxidation 24 of manganese oxide surfaces using X-ray photoelectron spectroscopy (XPS). The surface structures, however, were not characterized in either study. More recently, Langell et al. 25 examined the MnO (100) surface using high-resolution electron energy loss spectroscopy (EELS) and showed that oxidation of the surface leads to the formation of Mn 2 O 3 and subsequently Mn 3 O 4 . Intermixture of the oxide species prevented isolation of pure-phase layers and hence structural determination of the surface. EELS in scanning transmission electron microscopy was also used to analyze manganese valence at the surfaces of natural manganese oxides. 26 It was found that the average valence at the β-MnO 2 surface was 4.0, in agreement with the formal ABSTRACT: Stoichiometric and defective terminations of the β-MnO 2 (110), (100), and (101) surfaces are investigated as a function of oxygen partial pressure and temperature using ab initio thermodynamics. In agreement with studies on other rutile-type minerals, the (110) surface is predicted to be the most stable surface, followed by the (100) surface and then the (101) surface. The (110) and (101) surfaces are found to oxidize by formation...

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Section: ' Introductionmentioning

confidence: 99%

First-Principles Calculations of Clean, Oxidized, and Reduced β-MnO₂ Surfaces

Oxford

Chaka

2011

J. Phys. Chem. C

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“…A range of modified nanomaterials has been used as transduction elements for VOC detection, including nanoparticles (NPs), silicon nanowires (Si NWs) and carbon nanotubes (CNTs) among others . Recognition of volatolomics can be achieved by two main approaches: selective detection of (pre‐)identified VOCs or cross‐reactive (i.e. semi‐selective) sensor arrays in combination with pattern recognition, which are sensitive to a broad spectrum of volatolomic patterns.…”

Section: Nanomaterial‐based Solid‐state Sensors For Volatolomic Applimentioning

confidence: 99%

“…This group of sensors requires laborious identification of the targeted VOC in the presence of an interfering background as well as synthesis of a highly selective nanomaterial for each VOC of interest . There are several examples for selective sensing of disease‐related VOCs, including the detection of nitric oxide (NO), hydrogen peroxide (H 2 O 2 ), acetone and ammonia among others . Despite advances in the detection of VOC‐related diseases by selective nanomaterial‐based recognition, this approach is limited to a relatively narrow spectrum of diseases.…”

Section: Nanomaterial‐based Solid‐state Sensors For Volatolomic Applimentioning

confidence: 99%

Nanoscale Sensor Technologies for Disease Detection via Volatolomics

Vishinkin

Haick

2015

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168

209

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The detection of many diseases is missed because of delayed diagnoses or the low efficacy of some treatments. This emphasizes the urgent need for inexpensive and minimally invasive technologies that would allow efficient early detection, stratifying the population for personalized therapy, and improving the efficacy of rapid bed-side assessment of treatment. An emerging approach that has a high potential to fulfill these needs is based on so-called "volatolomics", namely, chemical processes involving profiles of highly volatile organic compounds (VOCs) emitted from body fluids, including breath, skin, urine and blood. This article presents a didactic review of some of the main advances related to the use of nanomaterial-based solid-state and flexible sensors, and related artificially intelligent sensing arrays for the detection and monitoring of disease with volatolomics. The article attempts to review the technological gaps and confounding factors related to VOC testing. Different ways to choose nanomaterial-based sensors are discussed, while considering the profiles of targeted volatile markers and possible limitations of applying the sensing approach. Perspectives for taking volatolomics to a new level in the field of diagnostics are highlighted.

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“…Recently inorganic materials have attracted considerable attention in the fabrication of biosensors owing to their excellent electrical properties and chemical stability [1][2][3][4]. Metal oxides have been used in performance-enhanced biosensors [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Cholesterol Sensors Using Mixture of Cholesterol Oxidase and ZnO Nanoparticles on Plastic

Park¹,

Cho²,

Kim³

2014

Transactions on Electrical and Electronic Materials

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In this study, cholesterol sensors consisting of a mixture of cholesterol oxidase (ChOx) and zinc oxide (ZnO) nanoparticles (NPs) are constructed on plastic substrates and their sensing characteristics are examined in air. The current of the ChOx-ZnO NP film decreases in magnitude as cholesterol molecules are adsorbed on the film, due to the resulting increase in the number of electrons generated by the reaction between the cholesterol and the ChOx. The cholesterol sensor shows a high sensitivity of 1.08 μA/mM and a wide detection range from 10 nM to 1 mM.

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A novel non-enzymatic hydrogen peroxide biosensor based on ultralong manganite MnOOH nanowires

Cited by 65 publications

References 24 publications

First-Principles Calculations of Clean, Oxidized, and Reduced β-MnO₂ Surfaces

First-Principles Calculations of Clean, Oxidized, and Reduced β-MnO₂ Surfaces

Nanoscale Sensor Technologies for Disease Detection via Volatolomics

Highly Sensitive Cholesterol Sensors Using Mixture of Cholesterol Oxidase and ZnO Nanoparticles on Plastic

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A novel non-enzymatic hydrogen peroxide biosensor based on ultralong manganite MnOOH nanowires

Cited by 65 publications

References 24 publications

First-Principles Calculations of Clean, Oxidized, and Reduced β-MnO2 Surfaces

First-Principles Calculations of Clean, Oxidized, and Reduced β-MnO2 Surfaces

Nanoscale Sensor Technologies for Disease Detection via Volatolomics

Highly Sensitive Cholesterol Sensors Using Mixture of Cholesterol Oxidase and ZnO Nanoparticles on Plastic

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First-Principles Calculations of Clean, Oxidized, and Reduced β-MnO₂ Surfaces

First-Principles Calculations of Clean, Oxidized, and Reduced β-MnO₂ Surfaces