Titanate Nanofibers as Intelligent Absorbents for the Removal of Radioactive Ions from Water

Yang, Dong; Zheng, Zhanying; Zhu, Hua; Liu, Hong Wei; Gao, Xue

doi:10.1002/adma.200702055

Cited by 250 publications

(187 citation statements)

References 22 publications

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“…9 where S stands for S 1 , S 2 or S 3 , and dye.ads stands for adsorbed dye. Through eqn (8)(9)(10)(11)(12)(13)(14) photocatalysis process takes place and consequently dye degradation.…”

Section: Application Of Titanates For Ars Dye Removal Through Photocamentioning

confidence: 99%

“…7,34 On the other hand, the wide band gap energy of these titanates (3.8 eV for nanosheets composed of sponges; and 3.2 eV of anatase TiO 2 ), 35,36 exhibit optical absorption in UV region and make them suitable in photocatalysis 8 and photoelectric applications. Various studies on photocatalytic activity (PCA) and its enhancement is seen in literature for example, decomposition of acetic acid, 37 organic/inorganic pollutants, heavy metal ions and dyes from water 11,33,38 etc. Similar to other semiconductors, in the case of titanates, high surface area inuences the optoelectronic properties where an explicit effect is reected in photoluminescence (PL) attracting a lot of research attention.…”

Section: Introductionmentioning

confidence: 99%

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Reduced recombination and enhanced UV-assisted photocatalysis by highly anisotropic titanates from electrospun TiO2–SiO2 nanostructures

2014

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The surface areas of electrospun fibers/rice grain-shaped nanostructures of TiO 2 -SiO 2 composites were further enhanced after transforming them into thorn or sponge shaped titanates via selective leaching of SiO 2 , which was reported by our group previously [RSC Adv., 2012, 2, 992]. In this study, we report on their application in photocatalytic activity (PCA) when juxtaposed with photoluminescence (PL). Two defect related bands are observed in PL and their origin is discussed in relation to calcination, crystallization and nucleation effects. The relative PL intensity for sponge shapes was the lowest and hence had the lowest radiative recombination, which suggests carrier trapping at defect centers. This enables the charge carriers to migrate to the surface and participate in the PCA. The results of PCA suggested that the sponge-shaped titanate exhibits the highest degradation rate among all samples. A plausible mechanism for the differences in PCA is proposed based on the variation in the defect-densities.

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“…9 where S stands for S 1 , S 2 or S 3 , and dye.ads stands for adsorbed dye. Through eqn (8)(9)(10)(11)(12)(13)(14) photocatalysis process takes place and consequently dye degradation.…”

Section: Application Of Titanates For Ars Dye Removal Through Photocamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Reduced recombination and enhanced UV-assisted photocatalysis by highly anisotropic titanates from electrospun TiO2–SiO2 nanostructures

2014

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“…Effluents from the textile industries are important sources of water pollution, because dyes in wastewater undergoes chemical as well as biological changes, consume dissolved oxygen, destroy aquatic life and endanger human health. Therefore, it is necessary to treat textile effluents prior to their discharge into the receiving water [1][2][3][4][5][6].With the intensive development of materials research, various micro-and nano-materials have already been adopted for the treatment of environmental pollutants due to their excellent photocatalytic activities.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Fe3O4@G-C3N4 Nanocomposites for Visible Light Photocatalysis of RhB

Liu¹,

Xü²,

Gao³

et al. 2017

JAN

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Abstract. Visible light-responsive Fe 3 O 4 @g-C 3 N 4 nanocomposites were prepared by hydrothermal method with g-C 3 N 4 nanosheets as the substrates. The photocatalytic performances of the Fe 3 O 4 @g-C 3 N 4 nanocomposites were evaluated in photo Fenton-like discoloration of RhB dye using H 2 O 2 as an oxidant under visible-light irradiation. Meanwhile, the reusability and magnetic properties were also investigated. The results revealed that the Fe 3 O 4 @g-C 3 N 4 nanocomposites showed considerable photocatalytic activity, and exhibited excellent reusability with almost no change after four runs, and more importantly, Fe 3 O 4 @g-C 3 N 4 nanocomposites could be recovered magnetically. Therefore, the fabricated Fe 3 O 4 @g-C 3 N 4 nanocomposite photocatalyst is a promising candidate for energy conversion and environmental remediation.

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“…Waste clean-up -Scientists are working on Nanotechnology solution for radioactive waste clean-up, specifically the use of titanate nanofibers as absorbents [84] for the removal of radioactive ions from water. Researchers have reported that the unique structural properties of titanate nanotubes and nanofibers make them superior materials for the removal of radioactive cesium and iodine ions in water [85].…”

Section: Environmentmentioning

confidence: 99%

Deployment and exploitation of nanotechnology nanomaterials and nanomedicine

Matteucci¹,

Giannantonio²,

Calabi³

et al. 2018

AIP Conference Proceedings

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Abstract. Since around 50 years ago, the academic world is developing knowledge and technology to understand and to control matter at the nanoscale in order to exploit the peculiar mechanical, electrical, optical and magnetic properties emerging when a discrete number of atoms is assembled in structures which must be described according to the weird rules of quantum mechanics. This huge know how, commonly named Nanotechnology, was nucleated according to deployment strategies mainly defined and funded worldwide by governmental institutions in order to create the base for their further industrial exploitation and to provide an expectedly large socioeconomic impact. In the following, we will give a brief overview of the main applications of nanomaterials and an estimate of their value, based on the forecasts provided by some market research companies. In particular, we will briefly disclose the application of nanomaterials in the fields of Electronics & ICT, Energy and Environment, and, in particular, in the highly rewarding field of Nanomedicine. Further, we will highlight some key aspects of the deployment policies undertaken around the world which still are a key prerequisite for a full exploitation of the potential of Nanotechnology.

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Titanate Nanofibers as Intelligent Absorbents for the Removal of Radioactive Ions from Water

Cited by 250 publications

References 22 publications

Reduced recombination and enhanced UV-assisted photocatalysis by highly anisotropic titanates from electrospun TiO2–SiO2 nanostructures

Reduced recombination and enhanced UV-assisted photocatalysis by highly anisotropic titanates from electrospun TiO2–SiO2 nanostructures

Magnetic Fe<sub>3</sub>O<sub>4</sub>@G-C<sub>3</sub>N<sub>4</sub> Nanocomposites for Visible Light Photocatalysis of RhB

Deployment and exploitation of nanotechnology nanomaterials and nanomedicine

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