synthesis of y-branched tio2 nanotubes

... However, there is no report on the synthesis of branched TiO 2 nanotubes. In this communication, we report for the first time, the synthesis, and characterization of Y-branched TiO 2 nanotube structures ... carbon nanotubes (CNTs), etc. [2,6–11]. Carbon nanotubes (CNTs) and boron nitride (BN) were reported to form Y-branched nanotubes with different electronic properties com...

Ngày tải lên: 20/03/2014, 13:08

... high yield of multiwalled WS 2 nanotubes. 2. Experimental 2.1. Synthesis of WO 3 nanorods An aqueous solution containing a mixture of 1.32 g of (NH 4 ) 10 W 12 O 41 ·7H 2 O and 2.10 g of citric ... 67–72 Fig. 4. A low resolution TEM image of the WS 2 nanotubes (a) indicates the yield of nanotubes during the conversion process. TEM image of hollow WS 2 nanotubes (b)....

Ngày tải lên: 19/03/2014, 16:48

... Journal of Crystal Growth 275 (2005) e2371–e2376 Hydrothermal synthesis of Na 2 Ti 6 O 13 and TiO 2 whiskers Dong-Seok Seo a , Hwan Kim a , Jong-Kook Lee b,Ã a School of Materials Science ... purification, decomposition of NO x and improvement of living conditions by removal of various pollutants, etc. [19–21]. In this paper, we also demonstrated the preparation of TiO 2 whiske...

Ngày tải lên: 20/03/2014, 13:04

... Hydrothermal synthesis of TiO 2 nanofibres Fei-Bao Zhang, Hu-Lin Li ⁎ College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou ... March 2006 Abstract TiO 2 nanofibres were synthesized by the hydrothermal method. The result shows that the growth of TiO 2 nanofibres is sensitive to the concentration of NaOH and the heating temperature. © ... is of significant impo...

Ngày tải lên: 20/03/2014, 13:04

... of aggregates of nanorods of ∼10 nm in diameter. The nanocrystalline TiO 2 thus prepared appears to have an engraved surface morphology and consists mainly of the anatase and mi- nor amount of ... 160–167 161 anatase to rutile and of brookite to rutile do not take place re- versibly [24]. It is generally claimed that the sol–gel synthesis of ceramic oxides offers advantages su...

Ngày tải lên: 20/03/2014, 13:07

... left inset of the figure shows the enlarged picture of the agglomerated nanotubes; but the product for 8h (Fig. 4(h)) gave complete formation of the nanotubes. Ultimately, well crystalline nanotubes were ... some of the Ti–O–Ti bonds of the raw material are broken and layered titanates composed of octahedral TiO 6 units with Na + metal ions are formed in the form of thin smal...

Ngày tải lên: 20/03/2014, 13:08

... general morphology of SnO 2 nanotubes was observed by FE-SEM and is shown in Fig. 2. The as-prepared SnO 2 nanotubes have lengths of Fig. 1. X-ray diffraction patterns of SnO 2 nanotubes and nanopowders. a ... while SnO 2 nanotubes have a surface area of 45.6 m 2 /g. The crystal structure of the SnO 2 nanotubes was further analysed by TEM and high resolution TEM (HRTEM). A...

Ngày tải lên: 20/03/2014, 13:08

... process and mechanism of TiO 2 nanotube is different from that of carbon nanotubes. Study on its formation process will helpful to understand the mechanism of formation of TiO 2 nanotubes in the ... electric arc discharging of graphite or pyrolysis of small molecule hydrocarbon was used for the preparation of carbon nanotubes 2-4 . In 1998, Kasuga et al. found that t...

Ngày tải lên: 20/03/2014, 13:08

... the irradiation of 7W Hg lamp at the distance of 10cm were measured. The calculated ratio of R D /R L was considered as a photoconductivity of obtained materials. The results of measurements ... applications of nanocomposite TiO 2 /SnO 2 films were showed. 1. Introduction TiO 2 is one of the most attracted materials in nanoscience and nanotechnology because of having...

Ngày tải lên: 13/02/2014, 04:20

... responsibility and oversight. This type of model has led to the emergence of pockets of MIS resources outside of the primary computing environment. Lack of training and funding are two critical ... mix of small, mid-sized, and large agencies to assess the state of the practice across the whole spectrum of transit activity in North America. BACKGROUND The scope and objectives...

Ngày tải lên: 18/02/2014, 11:20