Arrays of TiO2 Nanowires as Photoelectrochemical Sensors for Hydrazine Detection

Ongaro, Michael; Signoretto, Michela; Trevisan, Valentina; Stortini, Angela Maria; Ugo, Paolo

doi:10.3390/chemosensors3020146

Cited by 17 publications

(9 citation statements)

References 27 publications

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“…We next discuss how this 3DE/Au electrode was utilized for the photoelectrochemical (PEC) sensing of copper ions using cadmium sulfide as an active semiconductor 39 , 40 . The most common current collector for a PEC sensor is indium-doped tin oxide (ITO) or fluorine-doped tin oxide (FTO) glass 25 , 41 . These optically transparent electrode materials provide high optical transmittance values, which allow a greater photoelectrical response compared to a glassy carbon electrode (GCE) 42 .…”

Section: Resultsmentioning

confidence: 99%

Three-Dimensional Printed Electrode and Its Novel Applications in Electronic Devices

Foo

Lim

Mahdi

et al. 2018

Sci Rep

175

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Three-dimensional (3D) printing technology provides a novel approach to material fabrication for various applications because of its ability to create low-cost 3D printed platforms. In this study, a printable graphene-based conductive filament was employed to create a range of 3D printed electrodes (3DEs) using a commercial 3D printer. This printing technology provides a simplistic and low-cost approach, which eliminates the need for the ex-situ modification and post-treatment of the product. The conductive nature of the 3DEs provides numerous deposition platforms for electrochemical active nanomaterials such as graphene, polypyrrole, and cadmium sulfide, either through electrochemical or physical approaches. To provide proof-of-concept, these 3DEs were physiochemically and electrochemically evaluated and proficiently fabricated into a supercapacitor and photoelectrochemical sensor. The as-fabricated supercapacitor provided a good capacitance performance, with a specific capacitance of 98.37 Fg−1. In addition, these 3DEs were fabricated into a photoelectrochemical sensing platform. They had a photocurrent response that exceeded expectations (~724.1 μA) and a lower detection limit (0.05 μM) than an ITO/FTO glass electrode. By subsequently modifying the printing material and electrode architecture, this 3D printing approach could provide a facile and rapid manufacturing process for energy devices based on the conceptual design.

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Section: Resultsmentioning

confidence: 99%

Three-Dimensional Printed Electrode and Its Novel Applications in Electronic Devices

Foo

Lim

Mahdi

et al. 2018

Sci Rep

175

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“…CuO NWs photocathodes fabricated via hydrothermal method have also shown a photocurrent of ~1.4 mA cm -2 at 0 V vs. RHE under AM 1.5G irradiation, which is one of the highest photocurrents based on bare CuO photocathode [101]. Hydrogenated 1-D materials (Figure 8) have also been integrated in PEC cells for sensing applications [104][105][106][107]. For instance, Au-NiO1-x (0<x<1) hybrid NWs arrays are used as glucose sensors that exhibits an ultrahigh sensitivity of 4.061 mA cm -2 mM -1 , low detection limit and a wide level of glucose concentration in the detection range of 0.005-15 mM in PEC cells [104].…”

Section: Photochemical Cellsmentioning

confidence: 99%

“…For instance, Au-NiO1-x (0<x<1) hybrid NWs arrays are used as glucose sensors that exhibits an ultrahigh sensitivity of 4.061 mA cm -2 mM -1 , low detection limit and a wide level of glucose concentration in the detection range of 0.005-15 mM in PEC cells [104]. In addition, TiO2 NWs prepared by template sol-gel synthesis are practical for a hydrazine photoelectrochemical sensor having a limit of detection (LOD) of 1.91 μM and a limit of quantification (LOQ) 8.91mM [105]. Nanorods such as highperformance anatase-branch@hydrogenated rutile-nanorod TiO2 have also been used for detecting chemical oxygen demand (COD) in wastewater [106].…”

Section: Photochemical Cellsmentioning

confidence: 99%

One-dimensional (1D) Nanostructured Materials for Energy Applications

Machín¹,

Fontánez²,

Arango³

et al. 2021

Preprint

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At present, the world is at the peak of production of traditional fossil fuels. Much of the resources that humanity has been consuming (oil, coal and natural gas) are coming to an end. The human being faces a future that must necessarily go through a paradigm shift, which includes a progressive movement towards increasingly less polluting and energetically viable resources. In this sense, nanotechnology has a transcendental role in this change. For decades, new materials capable of being used in energy processes have been synthesized that undoubtedly will be the cornerstone of the future development of the planet. In this review, we report on the current progress in the synthesis and use of one-dimensional (1D) nanostructured materials (specifically nanowires, nanofibers, nanotubes and nanorods), with compositions based on oxides, nitrides, or metals, for applications related to energy. Due to its extraordinary surface-volume relationship, tunable thermal and transport properties, and its high surface area, these 1D nanostructures have become fundamental elements for the development of energy processes. The most relevant 1D nanomaterials, their different synthesis procedures, and useful methods for assembling 1D nanostructures in functional devices will be presented. Applications in relevant topics such as optoelectronic and photochemical devices, hydrogen production or energy storage, among others, will be discussed. The present review concludes with a forecast on the directions towards which future research could be directed on this class of nanostructured materials.

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“…1–D materials ( Figure 8 ) have also been integrated in PEC cells for sensing applications [ 106 , 107 , 108 , 109 ]. For instance, Au–NiO 1−x (0 < x < 1) hybrid NWs arrays are used as glucose sensors that exhibits an ultrahigh sensitivity of 4.061 mA cm −2 mM −1 , low detection limit and a wide level of glucose concentration in the detection range of 0.005–15 mM in PEC cells [ 106 ].…”

Section: Applicationsmentioning

confidence: 99%

“…For instance, Au–NiO 1−x (0 < x < 1) hybrid NWs arrays are used as glucose sensors that exhibits an ultrahigh sensitivity of 4.061 mA cm −2 mM −1 , low detection limit and a wide level of glucose concentration in the detection range of 0.005–15 mM in PEC cells [ 106 ]. In addition, TiO 2 NWs prepared by template sol-gel synthesis are practical for a hydrazine photoelectrochemical sensor having a limit of detection (LOD) of 1.91 μM and a limit of quantification (LOQ) 8.91mM [ 107 ]. Nanorods such as high-performance anatase-branch@hydrogenated rutile-nanorod TiO 2 have also been used for detecting chemical oxygen demand (COD) in wastewater [ 108 ].…”

Section: Applicationsmentioning

confidence: 99%

One-Dimensional (1D) Nanostructured Materials for Energy Applications

Machín¹,

Fontánez

Arango

et al. 2021

Materials

View full text Add to dashboard Cite

At present, the world is at the peak of production of traditional fossil fuels. Much of the resources that humanity has been consuming (oil, coal, and natural gas) are coming to an end. The human being faces a future that must necessarily go through a paradigm shift, which includes a progressive movement towards increasingly less polluting and energetically viable resources. In this sense, nanotechnology has a transcendental role in this change. For decades, new materials capable of being used in energy processes have been synthesized, which undoubtedly will be the cornerstone of the future development of the planet. In this review, we report on the current progress in the synthesis and use of one-dimensional (1D) nanostructured materials (specifically nanowires, nanofibers, nanotubes, and nanorods), with compositions based on oxides, nitrides, or metals, for applications related to energy. Due to its extraordinary surface–volume relationship, tunable thermal and transport properties, and its high surface area, these 1D nanostructures have become fundamental elements for the development of energy processes. The most relevant 1D nanomaterials, their different synthesis procedures, and useful methods for assembling 1D nanostructures in functional devices will be presented. Applications in relevant topics such as optoelectronic and photochemical devices, hydrogen production, or energy storage, among others, will be discussed. The present review concludes with a forecast on the directions towards which future research could be directed on this class of nanostructured materials.

show abstract

Arrays of TiO2 Nanowires as Photoelectrochemical Sensors for Hydrazine Detection

Cited by 17 publications

References 27 publications

Three-Dimensional Printed Electrode and Its Novel Applications in Electronic Devices

Three-Dimensional Printed Electrode and Its Novel Applications in Electronic Devices

One-dimensional (1D) Nanostructured Materials for Energy Applications

One-Dimensional (1D) Nanostructured Materials for Energy Applications

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