Room temperature ferromagnetism of Co-doped TiO2 nanotube arrays prepared by sol–gel template synthesis

Huang, Chunming; Liu, Xueqin; Liu, Yanping; Wang, Yinyue

doi:10.1016/j.cplett.2006.10.010

Cited by 66 publications

(18 citation statements)

References 18 publications

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“…In general, one can notice that the intensity of the Raman peaks are lower for the cobalt-modified samples. This has been observed previously and indicate that the lattice vibrations of titania are affected by the presence of surface Co atoms [70]. The relatively large signal intensity of the peaks in the non-modified sample indicates enhanced anatase TiO 2 crystallinity as is also evident from powder XRD studies (Fig.…”

Section: Nitrogen Physisorption Studiessupporting

confidence: 51%

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Solar simulated hydrogen evolution using cobalt oxide nanoclusters deposited on titanium dioxide mesoporous materials prepared by evaporation induced self-assembly process

Mahoney

Peng

et al. 2015

International Journal of Hydrogen Energy

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Section: Nitrogen Physisorption Studiessupporting

confidence: 51%

“…The Co 2p peaks (3/2 and 1/2) appear at 779. 8 [14,44,50,70,72]. The binding energy values of Co, O, and Ti are indicated in Table S2 in the Supplementary Section.…”

Section: Transmission Electron Microscopic Studiesmentioning

confidence: 99%

Solar simulated hydrogen evolution using cobalt oxide nanoclusters deposited on titanium dioxide mesoporous materials prepared by evaporation induced self-assembly process

Mahoney

Peng

et al. 2015

International Journal of Hydrogen Energy

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“…Recently, one-dimensional TiO 2 nano arrays materials, such as nanotube arrays and nanotape arrays, have been studied in order to use for the solar cell materials and new-style photocatalyst [6][7]. At present, one-dimensional TiO 2 nano arrays can be prepared by many methods, including template-assistant approaches [8][9], direct oxidation of Ti substrate [10], electrochemical anodization of titanium [11][12], metal-organic chemical vapor deposition [13][14], and hydrothermal synthesis [15][16]. Among these methods, hydrothermal synthesis is a relatively simple method because of its mild experimental conditions and lower cost; therefore, it is a promising approach to prepare large-scale and well-aligned TiO 2 nano arrays.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal growth of well-aligned TiO2 nanorod arrays: Dependence of morphology upon hydrothermal reaction conditions

Zhang

Guo

et al. 2010

Rare Metals

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Well-aligned TiO 2 nanorod arrays (TNAs) were prepared on pretreated quartz substrates via hydrothermal method. The effect of the different preparation conditions on the growth morphologies of TNAs was systematically investigated by X-ray diffraction (XRD) and field-emission scanning electron microscopy (FE-SEM). The photocatalytic properties were tested by photodegradation of a methyl blue solution. It is demonstrated that the hydrothermal reaction conditions, such as precursor concentration, hydrothermal reaction temperature, and hydrothermal reaction times, can greatly affect the growth of TNAs. Controlling the preparation process, TNAs with 2 μm in length and 140-170 nm in diameter and well-aligned orientation have been successfully prepared. The photocatalytic experiment results indicate that TNAs have much better photocatalytic activity than TiO 2 nanoparticles.

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“…Room temperature ferromagnetism in Co-doped TiO 2 NTs prepared by sol-gel template synthesis was reported by Huang et al where the ferromagnetic behavior is related to the oxygen vacancies created by the Co 2+ substitution of Ti 4+ site in TiO 2 [11]. The synthesis of room temperature ferromagnetic Co-doped titanate NTs via a simple hydrothermal method was also achieved in another study [12].…”

Section: Brief Overview Of Experimental Workmentioning

confidence: 85%

Low Dimensional Nanomaterials for Spintronics

Yang

Xiang

2008

One-Dimensional Nanostructures

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Moore's Law in microelectronic technology will break down as the size of individual bits approaches the dimension of atoms; this has been called the end of the silicon road map. For this reason and also for enhancing the multifunctionality of devices, the spin degree of freedom of electron is being investigated for magnetoelectronics applications, i.e., spintronics. Spin-based devices are closely connected with the development of nanotechnology. In this chapter, recent developments of the low-dimensional nanomaterials for spintronics are reviewed. In the first section, the main concepts of spintronics including nanospintronics are briefly discussed. Experimental studies on transition-metal-doped nanowires and nanotubes are summarized in the second section. Extensive theoretical works in this field are reviewed in the third section. Finally, an outlook is given in the last section. SpintronicsSpintronics (a neologism for "spin-based electronics") [1,2], also known as magnetoelectronics, is an emergent technology that exploits the quantum propensity of electrons to spin as well as make use of their charge state. The spin itself is manifested as a detectable weak magnetic energy state characterized as "spin up" and "spin down". Spintronics started attracting massive interest with the discovery of giant magnetoresistance (GMR) in the 1980s, which has already been adopted as the norm in the hard disk drive (HDD) manufacturing industry. Indeed, the impact of spintronics in the HDD industry is a mere indication of things to come.Spintronics has a number of potentially groundbreaking applications that are set to drive next-generation electronics. Although GMR can arguably be considered the driving force for spintronics at present, the biggest potential of spin-based devices is in embedded memories. Magnetoresistive random access memory (MRAM) is expected to revolutionize the memory market and contribute to the development of advanced and versatile computing and personal devices. Advances in instantly 247

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Room temperature ferromagnetism of Co-doped TiO2 nanotube arrays prepared by sol–gel template synthesis

Cited by 66 publications

References 18 publications

Solar simulated hydrogen evolution using cobalt oxide nanoclusters deposited on titanium dioxide mesoporous materials prepared by evaporation induced self-assembly process

Solar simulated hydrogen evolution using cobalt oxide nanoclusters deposited on titanium dioxide mesoporous materials prepared by evaporation induced self-assembly process

Hydrothermal growth of well-aligned TiO2 nanorod arrays: Dependence of morphology upon hydrothermal reaction conditions

Low Dimensional Nanomaterials for Spintronics

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