Search results

The electrochemical performance of the anode is mainly related to the chemical composition and the structure of the coating.
In this study, we selected MC to introduce into SnO2-Sb electrode and provide with more active sites, advantageous porous structure and high surface area.
XRD patterns were used for identification of the crystalline structure of the samples and obtained using a D-MAX 2200 VPC instrument with Cu Ka radiation.
XRD pattern of the SnO2-Sb powder only show a series of diffraction peaks of the SnO2 structure.
The characteristic diffraction peaks agreed well with the reflections of SnO2, indicating a tetragonal rutile structure.

Further more, limited by molecular structure of linear polymers, its flocculating properties can’t be improved much better.
The molecular structure of branched polyacrylamide was shown in Fig. 2.
Fig. 2 Molecular structure of branched polyacrylamide Fig. 3 FTIR of branched polyacrylamide Fig. 4 1H NMR of branched polyacrylamide 1H NMR spectrum.
So it demonstrated that the structure of branched polyacrylamide was the same as expected firstly.
Its structure was characterized with infrared spectrum and 1H NMR spectrum, the results demonstrated that it has branched structure.

Owing to their structure, hierarchical porous materials have been used in numerous applications such as catalysts or catalyst supports, energy storage and conversion, filtration, medical diagnostics, and medical therapies [3].
Besides, ordered mesoporous or macroporous structures also were used as templates for the synthesis of hierarchical porous carbon materials.
To improve the unsatisfactory porous structures of NiO, hierarchical porous NiO have been investigated [22-25].
A self-limiting growth method was used to synthesize MnO2/carbon nanocomposites with hierarchical porous structure [31].
The highest specific capacitance of 2570 F g-1 was obtained due to the unique structure design in hierarchical porous composites.

To achieve this material loss goal, more dilute and reduced temperature chemistries are being implemented.
However, care must be taken to prevent structure damage.
One is not only concerned with structure damage, but also moisture absorption, chemical reactions, and the removal of particles from phobic surfaces.
This less aggressive process, called the AspectClean TM process, has successfully cleaned many sensitive structures without damage, including 160nm p-MSQ trench structures and 60nm polysilicon lines.
By appropriately applying the AspectClean process for sensitive structures, no pattern damage was observed in any of the splits.

From the present study, we predict a structural phase transition from NaCl structure (B1) to the CsCl structure (B2).
These results are amazing because early-transition metal nitrides almost have NaCl structure (B1), while in the case of some late-transition metal nitrides, their structures are zinc-blende structure [7].
The obtained cubic NaCl structure is energetically the most stable structure at ambient pressure and a pressure induced structural phase transition from B1 to B2 phase is predicted at 98.53 GPa.
The test materials transform from their initial B1 to B2 structure under pressure.
Jha, Materials Chemistry and Physics 143 (2), 503(2014)

This pentagonal or hexagonal skeleton structure and obvious stratification has a larger surface area.
It can be seen that there were distributed multi-bubble pore, which links to aperture structure.
Inside, it can be seen clearly that it’s obviously stratifies just like the structure of the sponges, which has an equal distribution of the aperture, space-stretching multi-pore skeleton structure.
The structure is textured the regular size of 20th polyhedron with a large surface area.
Electroanalytical Chemistry, 1998, 448:87-93 [12] Adrian Canzian, Hugo Mosca, Guillermo Bozzolo., Applied Surface Science, 2007, 254: 392- 396 [13] Li N., Gao CH.

The most promising new approach based on integral green-chemistry methods is the biotechnological approach.
Microorganisms in biobeneficiation In biobeneficiation processes a wide range of microorganisms were used, from simple structure prokaryotes represented mostly by bacteria and archaea (Sulfolobus) to more complex eukaryotes represented by different fungi strains (A. niger, C. parapsilosus).
The Gram-positive and Gramnegative bacterial cell surface structures are presented in Fig. 3.
Bacterial cell surface structure [2,3].
The tremendously complex problem of gaining insight into the mechanisms of adsorption of living organisms is met by a not-less-complex surface chemistry in a pulp as far as even in the absence of adsorbed bacteria the sulphide surface species are unstable.

In this study, alkaline extraction of acidic polysaccharide from Eucheuma gelatinae was applied.The polysaccharide structure and monosaccharide composition were also investigated by IR and GC.
The polysaccharide structure and monosaccharide composition were also investigated.
Food Chemistry. 130(2012) 376-382

Most methods either shorten the nanotubes or disrupt their original structure.
Carbon nanotubes are fullerene related structures and peroxides are capable of abstracting hydrogen atoms from polymer chains.
The computations were carried out on a super computer using the ab initio quantum chemistry package Gaussian 03 [18].
DFT/B3LYP(3-21G) optimized structure of the (17,0) CNT segment and the C5H11 radical.
Cross sectional views of the energy minimized structures of CNT-PE composite (a) with and (b) without CNT-CPE chemical bonds.

Highly ordered, vertically oriented TiO2 nanotube arrays fabricated by this approach constitute a material architecture that offers a large specific surface area, favorable surface chemistry and narrow distribution of diffusion path not only for entering the tubular depth but also for species to be transported through the tube wall, has stimulated considerable research activity.
The structure and morphology of the anodized samples were characterized using a field emission scanning electron microscope (FESEM; JEOL JEM-6700F) fitted with an energy dispersive X-ray spectrometer (EDX).
The crystal structure of the samples was identified by X-ray diffractometer (XRD, Rigaku, D/max-rA) using Cu Kα radiation (λ=1.5418 Å).
XRD and EDX investigations carried out on a variety of the resultant nanotube layers indicate little difference in composition and crystal structure.
The tube length-electrode spacing dependence of nanotube arrays indicates that there should have a feasible anode-cathode spacing for the nanotubular structure (Table 1).