نتایج جستجو برای: nanoscale tio2

تعداد نتایج: 46297  

Journal: :Molecules 2014
Dmitry Selishchev Denis Kozlov

Composite TiO2/activated carbon (TiO2/AC) and TiO2/SiO2 photocatalysts with TiO2 contents in the 10 to 80 wt. % range were synthesized by the TiOSO4 thermal hydrolysis method and characterized by AES, BET, X-ray diffraction and FT-IR ATR methods. All TiO2 samples were in the anatase form, with a primary crystallite size of about 11 nm. The photocatalytic activities of the TiO2/AC and TiO2/SiO2 ...

2016
Xu Liu Weijie Duan Yan Chen Shihui Jiao Yue Zhao Yutang Kang Lu Li Zhenxing Fang Wei Xu Guangsheng Pang

Porous TiO2 were assembled by evaporating or refluxing TiO2 colloid, which was obtained by dispersing the TiO2 nanoparticles with a crystallite size (d XRD) of 3.2 nm into water or ethanol without any additives. Porous transparent bulk TiO2 was obtained by evaporating the TiO2-C2H5OH colloid at room temperature for 2 weeks, while porous TiO2 nanospheres were assembled by refluxing the TiO2-H2O ...

2005
James L. Gole Clemens Burda Z. L. Wang Mark White

Ready transformation and reactivity is observed at the nanoscale. Silica/silicon (SiOx) nanospheres of diameter %30 nm generated from equimolar Si/SiO2 mixtures are found to display enhanced catalytic and reactive properties relative to commonly employed silica support surfaces including fumed silica. A unique oxygen deficient synthesis has been used to generate SnO2Kx nanowires, nanoribbons, a...

2016
Kexin Wang Changlu Shao Xinghua Li Fujun Miao Na Lu Yichun Liu

Figure S1. Time‐dependent UV‐vis absorbance spectra of the MO solution in the presence (a) TiO2; (b) BiOI/TiO2‐C10; (c) BiOI/TiO2‐C20; (d) BiOI/TiO2‐C30; (e) mechanical mixture of BiOI and TiO2 (M‐BT) under UV light irradiation; (f) EDX of BiOI/TiO2‐C30 (Bi:Ti = 0.4:1).

2016
Soraya Hosseini Hossein Jahangirian Thomas J Webster Salman Masoudi Soltani Mohamed Kheireddine Aroua

Nanostructured photoanodes were prepared via a novel combination of titanium dioxide (TiO2) nanoparticles and mesoporous carbon (C). Four different photoanodes were synthesized by sol-gel spin coating onto a glassy substrate of fluorine-doped tin oxide. The photocatalytic activities of TiO2, TiO2/C/TiO2, TiO2/C/C/TiO2, and TiO2/C/TiO2/C/TiO2 photoanodes were evaluated by exposing the synthesize...

Journal: :Journal of environmental sciences 2015
Suttipan Pavasupree Stephan T Dubas Ratthapol Rangkupan

Polypropylene (PP) meltblown fibers were coated with titanium dioxide (TiO2) nanoparticles using layer-by-layer (LbL) deposition technique. The fibers were first modified with 3 layers of poly(4-styrenesulfonic acid) (PSS) and poly(diallyl-dimethylammonium chloride) (PDADMAC) to improve the anchoring of the TiO2 nanoparticle clusters. PDADMAC, which is positively charged, was then used as count...

Journal: :Dental materials journal 2012
Makiko Saita Kyo Kobayashi Fumihiko Yoshino Hiriko Hase Toru Nonami Katsuhiko Kimoto Masaichi-Chang-il Lee

It is well known that clinical bleaching can be achieved with a solution of 30% hydrogen peroxide (H2O2) or H2O2/titanium dioxide (TiO2) combination. This study examined the hypothesis that TiO2 coated with hydroxyapatite (HAp-TiO2) can generate reactive oxygen species (ROS). ROS are generated via photocatalysis using electron spin resonance (ESR). The bleaching properties of HAp-TiO2 in the pr...

2009
Tammy P. Chou Guozhong Cao

Xerogels consisting of SiO2 and TiO2 were explored for controlled release of brilliant blue FCF (BBF). Both SiO2 and SiO2–TiO2 xerogels were prepared by way of sol–gel processing, and the BBF release behavior was compared. SiO2–TiO2 xerogels with varying TiO2 content were also studied and the BBF release behavior was determined for each SiO2–TiO2 xerogel. It was found that the release of BBF fr...

2013
Kiran Gupta R P Singh Ashutosh Pandey Anjana Pandey

This paper reports the structural and optical properties and comparative photocatalytic activity of TiO2 and Ag-doped TiO2 nanoparticles against different bacterial strains under visible-light irradiation. The TiO2 and Ag-doped TiO2 photocatalysts were synthesized by acid catalyzed sol-gel technique and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-vis spe...

2016
Fei Tian Zhansheng Wu Yujun Yan Bang-Ce Ye Dandan Liu

N-Cu-activated carbon (AC)/TiO2 nanoparticles were prepared by the sol-gel technique through microwave irradiation to modify the visible-light response of TiO2. Their structure, surface chemical composition, and optical absorption properties were characterized. The results showed that the codoped particles had a higher surface area and smaller particle size than pure AC/TiO2 and monodoped AC/Ti...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید