Potassium iodate assisted synthesis of titanium dioxide nanoparticles with superior water-dispersibility

Wang, Yawen; Duo, Fangfang; Peng, Shiqi; Jia, Falong; Fan, Caimei

doi:10.1016/j.jcis.2014.05.009

Cited by 12 publications

(8 citation statements)

References 51 publications

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“…3 shows the (˛E) 2 vs the energy of absorbed light. The value of the direct transition optical gap can be evaluated by extrapolating the linear portion to the hv axis [22]. The Eg values for anatase and rutile are 3.30 and 3.03 eV, confirming that anatase TiO 2 has larger optical gap than rutile TiO 2 .…”

Section: Characterization Of Nano-tiomentioning

confidence: 88%

Comparative study of the effects of anatase and rutile titanium dioxide nanoparticles on the structure and properties of waterborne polyurethane

Peng

Zhang

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Section: Characterization Of Nano-tiomentioning

confidence: 88%

Comparative study of the effects of anatase and rutile titanium dioxide nanoparticles on the structure and properties of waterborne polyurethane

Peng

Zhang

et al. 2015

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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“…However, agglomeration of nano TiO 2 and Ag NPs during the traditional doping process results in larger particles and decreased photocatalytic antibacterial properties [29]. Thus, it is necessary to modify the surface of nano titanium dioxide before use.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Antibacterial Activity of Silver Doped Titanium Dioxide-Chitosan Composites under Visible Light

Xie

Xia

et al. 2018

Materials

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Nano titanium dioxide (TiO2) with photocatalytic activity was firstly modified by diethanolamine, and it was then doped with broad spectrum antibacterial silver (Ag) by in situ method. Further, both Ag doped TiO2-chitosan (STC) and TiO2-chitosan (TC) composites were prepared by the inverse emulsion cross-linking reaction. The antibacterial activities of STC composites were studied and their antibacterial mechanisms under visible light were investigated. The results show that in situ doping and inverse emulsion method led to good dispersion of Ag and TiO2 nanoparticles on the cross-linked chitosan microsphere. The STC with regular particle size of 1–10 μm exhibited excellent antibacterial activity against E. coli, P. aeruginosa and S. aureus under visible light. It is believed that STC with particle size of 1–10 μm has large specific surface area to contact with bacterial cell wall. The increased antibacterial activity was attributed to the enhancement of both electron-hole separations at the surface of nano-TiO2 by the silver ions under the visible light, and the synergetic and sustained release of strong oxidizing hydroxyl radicals of nano-TiO2, together with silver ions against bacteria. Thus, STC composites have great potential applications as antibacterial agents in the water treatment field.

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“…27 During the hydrothermal process, the trace amount of I 2 species was probably absorbed on the surface defect sites of the I-doped CD nanoparticles. The high-resolution spectrum of C 1S ( Figure 3C) indicated the three main peaks at 283.7, 285.3, and 287.3 eV, which were attributed to C-C, C-I and C-C, C-O, respectively.…”

mentioning

confidence: 99%

Engineering iodine-doped carbon dots as dual-modal probes for fluorescence and X-ray CT imaging

Zhang¹,

Ju²,

Zhang³

et al. 2015

IJN

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X-ray computed tomography (CT) is the most commonly used imaging technique for noninvasive diagnosis of disease. In order to improve tissue specificity and prevent adverse effects, we report the design and synthesis of iodine-doped carbon dots (I-doped CDs) as efficient CT contrast agents and fluorescence probe by a facile bottom-up hydrothermal carbonization process. The as-prepared I-doped CDs are monodispersed spherical nanoparticles (a diameter of ~2.7 nm) with favorable dispersibility and colloidal stability in water. The aqueous solution of I-doped CDs showed wavelength-dependent excitation and stable photoluminescence similar to traditional carbon quantum dots. Importantly, I-doped CDs displayed superior X-ray attenuation properties in vitro and excellent biocompatibility. After intravenous injection, I-doped CDs were distributed throughout the body and excreted by renal clearance. These findings validated that I-doped CDs with high X-ray attenuation potency and favorable photoluminescence show great promise for biomedical research and disease diagnosis.

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Potassium iodate assisted synthesis of titanium dioxide nanoparticles with superior water-dispersibility

Cited by 12 publications

References 51 publications

Comparative study of the effects of anatase and rutile titanium dioxide nanoparticles on the structure and properties of waterborne polyurethane

Comparative study of the effects of anatase and rutile titanium dioxide nanoparticles on the structure and properties of waterborne polyurethane

Enhanced Antibacterial Activity of Silver Doped Titanium Dioxide-Chitosan Composites under Visible Light

Engineering iodine-doped carbon dots as dual-modal probes for fluorescence and X-ray CT imaging

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