Porous Indium Oxide Nanotubes: Layer‐by‐Layer Assembly on Carbon‐Nanotube Templates and Application for Room‐Temperature NH<sub>3</sub> Gas Sensors

Du, Ning; Zhang, Hui; Chen, Bingdi; Ma, Xiangyang; Liu, Zhihong; Wu, Jianbo; Yang, Deren

doi:10.1002/adma.200602128

Cited by 395 publications

(230 citation statements)

References 40 publications

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“…With the great progress achieved in this field, CNTs have been used to synthesize not only various polymer/CNTs composites [4][5][6][7][8] but also various CNTs/metal oxide hybrids [9][10][11][12][13], where CNTs can serve as high-performance supporting materials. The decoration of CNTs with metal oxide nanoparticles can give them new properties and potentials for various applications [14][15][16][17][18]. Among them, the CNTs coated Fe 3 O 4 nanoparticles have attracted much increasing interest because of the excellent magnetic and biocompatible properties, which make them to be applied in electrochemical biosensing [19], biomanipulation [20], targeted drug delivery [21] and contaminant treatment [22].…”

Section: Introductionmentioning

confidence: 99%

Carbon nanotubes/magnetite hybrids prepared by a facile synthesis process and their magnetic properties

Zhang

Natsuki

et al. 2009

Applied Surface Science

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In this paper, a facile synthesis process is proposed to prepare multi-walled carbon nanotubes/magnetite (MWCNTs/Fe 3 O 4 ) hybrids. The process involves two steps: 1) water-soluble CNTs are synthesized by one-pot modification using potassium persulfate (KPS) as oxidant. 2) Fe 3 O 4 is assembled along the treated CNTs by employing a facile hydrothermal process with the presence of hydrazine hydrate as the mineralizer. The treated CNTs can be easily dispersed in aqueous solvent. Moreover, X-ray photoelectron spectroscopy (XPS) analysis reveals that several functional groups such as potassium carboxylate (-COOK), carbonyl (-C=O) and hydroxyl (-C-OH) groups are formed on the nanotube surfaces. The MWCNTs/Fe 3 O 4 hybrids are characterized with respect to crystal structure, morphology, element composition and magnetic property by x-ray diffraction (XRD), transmission electron microscopy (TEM), XPS and superconducting quantum interference device (SQUID) magnetometer. XRD and TEM results show that the Fe 3 O 4 nanoparticles with diameter in the range of 20-60 nm were firmly assembled on the nanotube surface. The magnetic property investigation indicated that the CNTs/Fe 3 O 4 hybrids exhibit a ferromagnetic behavior and possess a saturation magnetization of 32.2 emu/g. Further investigation indicates that the size of assembled Fe 3 O 4 nanoparticles can be turned by varying experiment factors. Moreover, a probable growth mechanism for the preparation of CNTs/Fe 3 O 4 hybrids was discussed.

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Section: Introductionmentioning

confidence: 99%

Carbon nanotubes/magnetite hybrids prepared by a facile synthesis process and their magnetic properties

Zhang

Natsuki

et al. 2009

Applied Surface Science

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“…Nanotubes of indium-tin-oxide (ITO) [338] Au [339], CdTe [339], TiO 2 [340], Pt/CeO 2 [341], WO 3 [334], and Y 2 O 3 / Yb/Er [342] have been produced using this method. For the formation of hollow nanoparticles, PS nanoparticles as seen with templating hollow MSNs, are also used in conjunction with LbL to produce hollow nanoparticles of titania, silica, or laponite (synthetic clay [Na 0.7 (Si 8 Mg 5.5 Li 0.3 )O 20 (OH) 4 ]) with PDDA/PAH/PSS polyelectrolytes used as the alternating layers [343].…”

Section: Layer-by-layer Depositionmentioning

confidence: 99%

Template-based syntheses for shape controlled nanostructures

Pérez-Page

et al. 2016

Advances in Colloid and Interface Science

129

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A variety of nanostructured materials are produced through template-based synthesis methods, including zerodimensional, one-dimensional, and two-dimensional structures. These span different forms such as nanoparticles, nanowires, nanotubes, nanoflakes, and nanosheets. Many physical characteristics of these materials such as the shape and size can be finely controlled through template selection and as a result, their properties as well. Reviewed here are several examples of these nanomaterials, with emphasis specifically on the templates and synthesis routes used to produce the final nanostructures. In the first section, the templates have been discussed while in the second section, their corresponding synthesis methods have been briefly reviewed, and lastly in the third section, applications of the materials themselves are highlighted. Some examples of the templates frequently encountered are organic structure directing agents, surfactants, polymers, carbon frameworks, colloidal sol-gels, inorganic frameworks, and nanoporous membranes. Synthesis methods that adopt these templates include emulsion-based routes and template-filling approaches, such as self-assembly, electrodeposition, electroless deposition, vapor deposition, and other methods including layer-by-layer and lithography. Templatebased synthesized nanomaterials are frequently encountered in select fields such as solar energy, thermoelectric materials, catalysis, biomedical applications, and magnetowetting of surfaces.

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“…These unique physical and chemical properties and excellent gas-sensitive properties make them the hotspots in the ield of nanometer gassensitive materials [34]. The carbon nanotube gas sensor is featured with high sensitivity, fast response speed, small size, and low power consumption, and it can work at room temperature [35]. It has broad application prospects in the aspect of gas sensor.…”

Section: The Signiicance Of Gas-sensing Materials On Online Monitoringmentioning

confidence: 99%

The SF6 Decomposition Mechanism: Background and Significance

Zhang¹,

Tang²,

Xiao³

et al. 2017

Nanomaterials Based Gas Sensors for SF6 Decomposition Components Detection

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Gas Insulated Switchgear (GIS) has been widely used in substations. The insulating medium used in GIS is sulfur hexaluoride (SF 6 ) gas. However, the internal insulation defect existed in GIS would inevitably lead to partial discharge (PD), and cause the composition of SF 6 to SOF 2 , SO2F 2 and SO 2 and other characteristic component gases. The decomposition phenomenon would greatly reduce the insulation performance of SF 6 insulated equipment, and even paralyze the whole power supply system. In this chapter, we irst discuss the objective existence, decomposition mechanism and harmness of insulation defects. Then the methods for insulation defects detection used to avoid the insulation accidents are introduced. Comparing all of the detection methods, diagnosing the insulation defect through analyzing the decomposed gases of SF 6 by chemical gas sensors is the optimal method due to its advantages, such as high detection accuracy and stability, signifying the importance of developing chemical gas sensor used in SF6 insulated equipment. In conclusion, there kinds of gas sensor material, carbon nanotubes, graphene, are chosen as the gas sensing materials to build speciic gas sensors for detecting each kind of SF 6 decomposed gases, and then enhance the gas sensitivity and selectivity by material modiication.

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Porous Indium Oxide Nanotubes: Layer‐by‐Layer Assembly on Carbon‐Nanotube Templates and Application for Room‐Temperature NH₃ Gas Sensors

Cited by 395 publications

References 40 publications

Carbon nanotubes/magnetite hybrids prepared by a facile synthesis process and their magnetic properties

Carbon nanotubes/magnetite hybrids prepared by a facile synthesis process and their magnetic properties

Template-based syntheses for shape controlled nanostructures

The SF6 Decomposition Mechanism: Background and Significance

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Porous Indium Oxide Nanotubes: Layer‐by‐Layer Assembly on Carbon‐Nanotube Templates and Application for Room‐Temperature NH3 Gas Sensors

Cited by 395 publications

References 40 publications

Carbon nanotubes/magnetite hybrids prepared by a facile synthesis process and their magnetic properties

Carbon nanotubes/magnetite hybrids prepared by a facile synthesis process and their magnetic properties

Template-based syntheses for shape controlled nanostructures

The SF6 Decomposition Mechanism: Background and Significance

Contact Info

Product

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Porous Indium Oxide Nanotubes: Layer‐by‐Layer Assembly on Carbon‐Nanotube Templates and Application for Room‐Temperature NH₃ Gas Sensors