ethylene glycol assisted hydrothermal synthesis offlower like zno architectures

... Ethylene glycol assisted hydrothermal synthesis of flower like ZnO architectures S. Ashoka a , G. Nagaraju a , C.N. Tharamani b , ... 2009 Keywords: Hydrothermal Ethylene glycol ZnO flowers Nanorods Wurtzite structure We describe a simple route to flower like ZnO architectures, based on the decomposition of zinc acetate precursor in water -ethylene ... the ZnO rod...

Ngày tải lên: 06/05/2014, 13:23

... 2011 Keywords: Ceramics ZnO nanorods Microwave -assisted hydrothermal synthesis Single crystalline Gas sensing property Single crystalline ZnO nanorods were synthesized via microwave assisted hydrothermal ... Microwave assisted hydrothermal synthesis of single crystalline ZnO nanorods for gas sensor application Prabhakar Rai, Hyeon-Min Song, ... mi- crowave synthesis ha...

Ngày tải lên: 06/05/2014, 13:24

... synthesized ZnO particles with controllable shape through a cetyltrimethylammonium bromide (CTAB) -assisted hydrothermal method [13]. Yogamalar et al. prepared various shapes of ZnO by a poly -ethylene glycol ... ZnðOHÞ 2À 4 þ 2H þ ð2Þ Fig. 3. SEM images of the as-synthesized ZnO samples: (a) ZnO- 11; (b) ZnO- 12; (c) ZnO- 13; (d) ZnO- 14. (e) ZnO- s. X. Zhao et al. / Advance...

Ngày tải lên: 06/05/2014, 13:26

... concentration: 5 Â 10 À5 M. (a) without any catalyst (b) sheet -like ZnO (c) spherical ZnO (d) nest -like ZnO and (e) flower -like ZnO. P.V. Adhyapak et al. / Ceramics International 40 (2014) 1951–1959 ... sheet -like, nest -like and flower -like ZnO nanostructures. The figure clearly indicates that flower -like ZnO exhibits best durability even after the third cycle and is more...

Ngày tải lên: 06/05/2014, 13:26

... [25] Ethylene Glycol ! Glycolaldehyde ! Glyox al or Glycolic acid ! Glyox ylic Acid ! Oxalic acid ! Car bon dioxide: ð1Þ In acid media, predominant formation of glycolaldehyde (CH 2 OH–CHO) and glycolic ... of ethylene glycol in acidic and basic media has been investigated widely [24– 26]. In the aqueous solution, the oxidation of ethylene gly- col involves the following reaction st...

Ngày tải lên: 19/03/2014, 16:48

... 2008 Keywords: Titania Flower -like Sphere Nanosheets Template-free Hydrothermal abstract Monodispersed flower -like titanate superstructure was successfully prepared by simple hydrothermal process without ... In our previous work, we have reported the synthesis of spherical TiO 2 nanosheets (flower -like morphology composed of nano- sheets) via simple hydrothermal synthesis using...

Ngày tải lên: 20/03/2014, 13:04

... (ZnO, AZO), the ZnO NWs grown on the ZnO seed layer are labeled as ZnO- NWZ, and the ZnO NWs grown on the AZO seed layer are labeled as ZnO- NWA. ... 1 h in the air [19]. 2.2. Hydrothermal synthesis of the ZnO NWs on the ZnO and AZO seed layers Vertically aligned ZnO NW arrays were grown i...

Ngày tải lên: 06/05/2014, 13:22

... 2012 Available online 10 January 2012 Keywords: ZnO Semiconductors Microstructure Surfactant-free Hydrothermal Various ZnO architectures like novel flowerlike structures radially assembled by rods, ... Controllable synthesis of ZnO architectures by a surfactant-free hydrothermal process Guixiang Du a, ⁎ , Lidong Zhang b , Yan Feng a , ... d hydroxyl ion, maybe control the ass...

Ngày tải lên: 06/05/2014, 13:22

... hydroxyl groups from polyethylene glycol (PEG400) on ZnO would slow down the preferential growth rate along C-axis direction, leading to rod -like products with ... and ZnO morphologies and explore an effective and simple route to control the morphology of ZnO for practical applications. This work focuses on...

Ngày tải lên: 06/05/2014, 13:23

... of the ZnO originates from the Fig. 4. TEM of (a) dandelion -like ZnO nanostructure and (b) an individual ZnO nanorod. Fig. 5. (a) SAED pattern of ZnO nanorod and (b) HRTEM image of a ZnO nanorod. Fig. ... single-crystallinity of the ZnO nanorod. Fig. 5b shows a high-resolution TEM (HRTEM) image of an individual sword -like ZnO nanorod. The image clearly reveals the fringes of...

Ngày tải lên: 06/05/2014, 13:24