نتایج جستجو برای: titania nanoparticle

تعداد نتایج: 33969  

Journal: :Journal of colloid and interface science 2013
Nur Hidayah Mohd Ran Leny Yuliati Siew Ling Lee Teuku Meurah Indra Mahlia Hadi Nur

A microparticle material of gold/polystyrene-coated hollow titania was successfully synthesized. The synthesis steps involved hydrothermal synthesis of a carbon sphere from sucrose as a template, coating of the carbon sphere with titania, removal of the carbon sphere to produce hollow titania, followed by coating of polystyrene on the surface of hollow titania and then attachment of gold nanopa...

Journal: :Nanoscale 2016
Junwei Zhao Pengyu Xu Yue Li Jian Wu Junfei Xue Qiannan Zhu Xuxing Lu Weihai Ni

We demonstrate a CTAB-templated approach towards direct coating of mesoporous titania on gold nanorods in aqueous solutions. The formation of the mesoporous shell is found to be closely correlated with CTAB concentration and the amount of the titania precursor. This approach can be readily extended to form mesoporous titania shells on other CTAB-capped nanoparticles.

Journal: :Langmuir : the ACS journal of surfaces and colloids 2007
Dongxia Liu Matthew Z Yates

Titania tubes with tunable wall thickness were produced by the sol-gel reaction of titanium(IV) n-butoxide in the presence of rod-shaped calcite particles that act as templates. A shell of amorphous titania was deposited around the calcite particles by sol-gel synthesis. The titania was crystallized to the anatase or rutile phase by sintering at different temperatures, and then acid etching was...

2012
Václav Štengl Tomáš Matys Grygar Jiří Henych Martin Kormunda

UNLABELLED BACKGROUND The work aims at improving photocatalytic activity of titania under Vis light irradiation using modification by Sn ions and an original, simple synthesis method. Tin-doped titania catalysts were prepared by thermal hydrolysis of aqueous solutions of titanium peroxo-complexes in the presence of SnCl4 or SnCl2 using an original, proprietary "one pot" synthesis not employi...

Journal: :Nanoscale research letters 2016
Enzhu Li Ning Wang Hongcai He Haijun Chen

Nb-doped SrTiO3 ceramics doped with the surface modification of nanosized titania was prepared via liquid phase deposition approach and subsequent sintered in an Ar atmosphere. The surface modification of nanosized titania significantly improved the ratio of the electrical conductivity to thermal conductivity of SrTiO3 ceramic doped with Nb, and has little impact on the Seebeck coefficient, thu...

Journal: :Molecules 2005
Bunjerd Jongsomjit Sutti Ngamposri Piyasan Praserthdam

Activities during ethylene/1-hexene copolymerization were found to increase using the mixed titania/silica-supported MAO with rac-Et[Ind]2ZrCl2 metallocene catalyst. Energy Dispersive X-ray spectorcopy (EDX) indicated that the titania was apparently located on the outer surface of silica and acted as a spacer to anchor MAO to the silica surface. IR spectra revealed the Si-O-Ti stretching at 980...

Journal: :Journal of the American Society for Mass Spectrometry 2008
Chun-Yuan Lo Jia-Yi Lin Wei-Yu Chen Cheng-Tai Chen Yu-Chie Chen

Titania nanotube arrays (NTA) generated from anodizing processes are tested as the substrate for surface-assisted laser desorption/ionization mass spectrometry (SALDI MS). The background generated from titania NTA is very low, making the approach suitable for the analysis of small molecules. The upper detectable mass is approximately 29 kDa. Homogeneous sample deposition leads to good shot-to-s...

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