Electrochemical synthesis of aligned amorphous carbon nanotubes/TiO2 nanotubes heterostructured arrays and its field emission properties

Jiang, Jinlong; Fang, Huaqing; Zhang, Xia; He, Kaichen; Wei, Zhiqiang; Pang, Xianjuan; Dai, Jianfeng

doi:10.1016/j.diamond.2017.03.015

Cited by 9 publications

(8 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nanowires are natural one-dimensional electron transport channels with morphologies, dimensions and electronic properties that are tunable via various approaches. Currently, many nanowires composed of various materials, including carbon materials [1][2][3][4], oxides [5][6][7][8][9][10], carbides [11][12][13], silicide [14][15][16] and so on, can be synthesized on a large scale and exhibit fantastic FE emission performances. The discovery of new types of cold cathode emission materials and improving their performances are important tasks.…”

Section: Introductionmentioning

confidence: 99%

Ge-doped ZnO nanowire arrays as cold field emitters with excellent performance

Liang

2019

Nanotechnology

View full text Add to dashboard Cite

Elemental doping is an efficient strategy to modify the electronic and optoelectronic properties of semiconductor materials. In this work, a high-quality Ge-doped tapered ZnO nanowire array was prepared via a simple chemical vapor deposition approach. The I–V and light emission behaviors were investigated based on a single nanowire with good electrical conductivity. The Kelvin probe force microscopy and ultraviolet photoelectron spectroscopy characterizations indicate that the doped nanowires possess a largely reduced work function relative to that of the pure ZnO nanostructures. These advantages allow Ge-doped ZnO nanowire arrays to deliver excellent field emission performance, including low turn-on and threshold fields, high emission current and long-term stability.

show abstract

Section: Introductionmentioning

confidence: 99%

Ge-doped ZnO nanowire arrays as cold field emitters with excellent performance

Liang

2019

Nanotechnology

View full text Add to dashboard Cite

show abstract

“…The research activities in recent years are mainly focused on the preparation of doped, mixed, functionalized and composite materials based on TiO 2 nanotubes. The doping and functionalization of anodically prepared TiO 2 nanotubes have been performed mainly by the deposition and dip coating techniques, as well as by the annealing of prepared structures in a specific atmosphere [ 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 ]. The anodic formation of doped and mixed TiO 2 nanotubes is also possible by the anodization of titanium alloy films and by the anodization of titanium in a dopant (or mixture) material containing electrolytes [ 20 , 64 ].…”

Section: Synthesis Of Porous Tio 2 Structuresmentioning

confidence: 99%

Porous TiO2-Based Gas Sensors for Cyber Chemical Systems to Provide Security and Medical Diagnosis

Galstyan

2017

Sensors

View full text Add to dashboard Cite

Gas sensors play an important role in our life, providing control and security of technical processes, environment, transportation and healthcare. Consequently, the development of high performance gas sensor devices is the subject of intense research. TiO2, with its excellent physical and chemical properties, is a very attractive material for the fabrication of chemical sensors. Meanwhile, the emerging technologies are focused on the fabrication of more flexible and smart systems for precise monitoring and diagnosis in real-time. The proposed cyber chemical systems in this paper are based on the integration of cyber elements with the chemical sensor devices. These systems may have a crucial effect on the environmental and industrial safety, control of carriage of dangerous goods and medicine. This review highlights the recent developments on fabrication of porous TiO2-based chemical gas sensors for their application in cyber chemical system showing the convenience and feasibility of such a model to provide the security and to perform the diagnostics. The most of reports have demonstrated that the fabrication of doped, mixed and composite structures based on porous TiO2 may drastically improve its sensing performance. In addition, each component has its unique effect on the sensing properties of material.

show abstract

“…[24] NiO and CuO have band structures which are well matched and offer enhanced properties. [25][26][27] Various methods can be applied to achieve the synthesis of NiO/CuO composite particles, including sputtering, thermo decomposition, chemical coprecipitation, the sol-gel method, microwave assisted, microemulsion, and both solvothermal and hydrothermal techniques. [28] However, there are some drawbacks on using these synthesis approaches, such as high cost, low yield, expensive and complex equipment, or time-consuming process.…”

Section: Introductionmentioning

confidence: 99%

“…[ 24 ] NiO and CuO have band structures which are well matched and offer enhanced properties. [ 25–27 ]…”

Section: Introductionmentioning

confidence: 99%

Composition Dependence of Structural, Optical, Magnetic and Photodegradation Properties of Nanocrystalline NiO/CuO Heterostructured Powders

Tangcharoen

Klysubun

Kongmark

2022

Physica Status Solidi (a)

View full text Add to dashboard Cite

Nanocrystalline NiO/CuO solid solutions and heterostructured powders are prepared by a sol–gel auto combustion method. Herein, the NiO/CuO compounds at various molar ratio, including 100/0, 97.5/2.5, 95/5, 92.5/7.5, 90/10, 80/20, 50/50, 20/80, 10/90, 5/95 and 0/100, are investigated. The structures, morphologies, optical, and magnetic properties of all samples are explored. The detailed structures of the NiO/CuO system are deduced from Rietveld refinements of X‐ray diffraction (XRD) data and the combination of experimental and simulation studies of X‐ray absorption spectroscopy (XAS) spectra. It is found that a small addition of CuO in NiO enhances the formation of rock salt CuxNi1–xO solid solutions with 0 ≤ x ≤ 0.1. The NiO/CuO composites with CuO mole fractions (m) of 20% ≤ m ≤ 95% are affirmed by the coexistence of NiO rock salt and CuO tenorite phases. The composites rich in CuO exhibit strong adsorption in the visible and ultraviolet spectral regions, while the absorption of composites rich in NiO is absent in certain regions of visible and infrared light. In addition, the superparamagnetism of NiO can be tuned to ferromagnetism by a small addition of CuO. The photocatalytic degradation efficiencies of rhodamine B, methylene blue, methyl orange, and methyl red over NiO/CuO reach 92%–97% within a period of 150 min under sunlight irradiation.

show abstract

Electrochemical synthesis of aligned amorphous carbon nanotubes/TiO2 nanotubes heterostructured arrays and its field emission properties

Cited by 9 publications

References 50 publications

Ge-doped ZnO nanowire arrays as cold field emitters with excellent performance

Ge-doped ZnO nanowire arrays as cold field emitters with excellent performance

Porous TiO2-Based Gas Sensors for Cyber Chemical Systems to Provide Security and Medical Diagnosis

Composition Dependence of Structural, Optical, Magnetic and Photodegradation Properties of Nanocrystalline NiO/CuO Heterostructured Powders

Contact Info

Product

Resources

About