Synthesis of one dimensional sno2 nanostructure via hydrothermal method for gas sensor application

... the SnO2 nanorods Fig The XRD pattern of the SnO2 nanorods grown via the hydrothermal method room temperature on a Horiba Jobin Yvon LabRam IR system at a spatial resolution of mm Raman scattering ... consist of nanorods as well as nanoparticles The diameters of SnO2 nanorods are in the range of 100–150 nm with lengths of the order of 1–2 mm The end planes...

Ngày tải lên: 20/03/2014, 13:08

... reducing gases [12] To investigate the oxidation activity of synthesized and commercial materials, we performed TPR study of SnO2 with and without Pd (Fig 6) TPR profile of the synthesized SnO2 displays ... target gas is of the same order of magnitude as the resistance of the sensors on the basis of commercial SnO2 The use of synthesized SnO2 results in the highest...

Ngày tải lên: 19/03/2014, 16:47

... patterns of Fe3+ -doped SnO2 nanoparticles: (a) SGC series and (b) SGH series pound Because of the interference of Fe3+ with SnO2 lattice, the crystallinity of the Fe3+ -doped SnO2 nanoparticles ... samples of pure SnO2 and 10% Fe3+ doped SnO2 are shown in Figs and The grain sizes of SnO2 calculated by Scherrer formula are showed in Table Compared to pure SnO...

Ngày tải lên: 20/03/2014, 13:08

... observation Optical Properties and Photocatalytic Activity of 1D CdS@ZnS Core-Shell Nanocomposites The optical properties of 1D CdS@ZnS core-shell nanocomposites were measured using UV-vis absorption and ... spectrophotometer and WGY-10 spectrofluorimeter Photocatalytic Decomposition of MB and 4CP To evaluate the photocatalytic activity of the synthesized...

Ngày tải lên: 22/06/2014, 01:20

... 33 2.2 Synthesis of 1D nanostructures using AAO as template 34 Chapter iii Table of contents 2.2.1 Synthesis of PPV 1D nanostructures …………… 35 2.2.2 Electrodeposition of polypyrrole and metallic ... amorphous) Chapter 1.1.1 Single-component NWs and NTs Single-component 1D nanostructures are simply NWs and NTs that consist of one type of material The application...

Ngày tải lên: 10/09/2015, 09:29

... chains It is proposed to be a more appropriate growth model of 1D silica nanowires because of their higher energetic and thermal stabilities and chemical reactivity than those of ES-2MR chains ... smaller gaps of SU-2MR chains indicate higher chemical reactivities, facilitating the continuous growth of the chains Hence, the SU-2MR chain may be a more reasonable growth mod...

Ngày tải lên: 16/03/2014, 15:03

... photoluminescence of highly ordered TiO2 nanowire arrays, Appl Phys Lett., 2001, 78: 1125－1127 11 Zhou, Y K., Huang, J., Li, H L., Synthesis of highly ordered LiMnO2 nanowire arrays (by AAO template) ... because of the densification of the gel during annealing process [25] The lengths of the nanowires are up to tens of microns, corresponding to the thickness of...

Ngày tải lên: 20/03/2014, 13:08

... patterns of the ZnO sample synthesized at 120 ◦C for 17 h hydrothermal treatment Figure a b d e c f Fig SEM images of the time-dependent evolution in the formation of 3D flower-like ZnO synthesized ... of the formation process of the 3D flower-like ZnO Figure Fig (a) Bar graph illustration of the photocatalytic degradation of KGL using ZnO samples s...

Ngày tải lên: 06/05/2014, 13:26

... and Weibull fading models We also consider the combined effect of lognormal shadow fading and small-scale fading models 1) Rayleigh fading: Assume that the received signal amplitude in V2V channel ... Jones, Connectivity analysis of wireless ad hoc networks with beamforming IEEE Trans Veh Technol 58(9), 5247–5257 (2009) [12] X Zhou, S Durrani, H Jones, Connectivity o...

Ngày tải lên: 21/06/2014, 17:20

... preparation of OMCs with different pore symmetries and tunable pore sizes According to a simplified model, we deduced the carbon pore size equation that is expected to direct the synthesis of OMCs with tunable ... h in air Synthesis of Ordered Mesoporous Carbons Ordered mesoporous carbon materials were synthesized using the recipe described previously [4, 12...

Ngày tải lên: 22/06/2014, 00:20

... Fig (a) Stripes with a periodicity of 1.26 nm are clearly visible in STM images of the h-BN phase (The image was taken with a bias voltage of VB = 1.8 V and a set tunneling current of IT = nA.) ... we report the discovery of a tunable system of two self-assembling nanostructures The structures are very appealing because of their 1D characters and their directional orthogon...

Ngày tải lên: 22/06/2014, 22:20

... synthesize calcium carbonate 3D nanofibrous structures from eggshells using femtosecond laser processing To the best of authors’ knowledge, this is the first work on synthesizing 3D calcium carbonate nanofibrous ... Tavangar et al.: Synthesis of three-dimensional calcium carbonate nanofibrous structure from eggshell using femtosecond laser ablation...

Ngày tải lên: 11/08/2014, 00:22

... areas of modern mathematics In this thesis, We will focus on the one dimensional Navier- Stokes equations and consider the initial- boundary value problem There are a lot of works on the initial value ... estimate of the Green’s function G(x, y, t) for the initial- boundary value problem to the linearized Navier- Stokes equations (1.5) We reca...

Ngày tải lên: 09/09/2015, 10:15

... the VLS nanowire growth as it determines the location and diameter of the nanostructures The most adopted method for the preparation of the metal catalyst for the VLS growth of ~ 11 ~ Chapter ... desorption of Au atoms The Au nanoparticles were used as catalysts for the growth of silicon nanowires via the Vapor-Liquid-Solid (VLS) mechanism The nanowires are of vi u...

Ngày tải lên: 11/09/2015, 09:18

... quality of life 9 Scaffold- based tissue engineering The concept of scaffold- based tissue engineering involves constructs made of viable cells supported with bioactive molecules and structural scaffolding ... Introduction Scaffold- based tissue engineering Electrospinning and tissue engineering 12 Periosteum and bone healing 16 Chapter Three 19 Electrosp...

Ngày tải lên: 14/09/2015, 08:24