Search results

Environmental application of photocatalysis Shalini Chaturvedi1a & Pragnesh N Dave1b 1aDepartment of Chemistry; Kachchh University; Kachchh- 370001, Gujarat India 1bDepartment of Chemistry; Kachchh University; Kachchh- 370001, Gujarat India a dshalini_81@yahoo.co.in b pragneshdave@gmail.com Key words: Photocatalysis; Environment; TiO2; Water purification; Organic degradation; Self cleaning Abstract: Recent interest and studies in environmental photo-chemistry, in natural photosynthesis, and chemical methods for solar energy transformations has contributed greatly to our knowledge and understanding of the various phenomena related to both photo-chemistry and catalysis.
Current building work pilot trials show high efficiacy in reducing fungal growth on for example, walls and roofing structures [87].
They observed that the extent of killing was inversely proportional to the thickness and structure of the cell wall.
The loss of membrane structure and membrane functions is the root cause of cell death when photocatalytic TiO2 particles are outside the cell [104].
[2] “CHEMISTRY & MATERIALS: Applications of Photocatalysis” Observatory NANO, Briefing No. 10, February (2011)

Control of material at the nanoscale, is already playing a significant role in scientific disciplines as diverse as physics, chemistry, materials science, biology, medicine, engineering, and computer simulation.
The combination of our topdown tools and methods with self-assembly on the atomic scale provides an impressive array of novel opportunities to mix-and-match hunks of chemistry and biology with artificially defined, person-made structures.

MgLaLiSi2O7 has an orthorhombic crystal structure [1-4].
Therefore, we report here the luminescent properties of Eu3+ in the orthorhombic crystal structure silicate MgLaLiSi2O7 powder phosphors prepared by sol-gel process.
Besson, Phase Transformations in Gel-Derived and Mixed-Powder-Derived Yttrium Disilicate, Y2Si2O7 by X-Ray Diffraction and 29Si MAS NMR,Journal of solid Chemistry. 149(2000)16-21
[4] M.E.Fleet, X.Y.Liu, High-Pressure Rare Earth Disilicates RE2Si2O7(RE=Nd, Sm, Eu, Gd): Type K, Journal of solid Chemistry. l61(2001)166-170
[5] M.Henry, Retrosynthesis in inorganic crystal structures: application to nesosilicate and inosilicate networks, Coordination Chemistry Reviews. 178-180(1998) 1109-1112

Quantum chemistry computation of molecular orbital of MA was carried out using the PM3 method of a semi-empirical quantum chemistry program “MOPAC” (Molecular Orbital Package, Fujitsu, SCIGRESS MO Compact 1.0.6 standard).
Chemical Structure of the Plasma-Polymerized Films The deposited films were analyzed by FT-IR measurements.
It is, therefore, confirmed that MA has been polymerized with keeping its primary structure.
Table 1 Electronic structure of MA in the ground state and the excited state estimated by PM3 calculation.
The electron structures of MA in the ground state (S0) and the excited states are calculated by the PM3 method and summarized in Table 1.

These structures were initially identified in 1991 by Japanese scientist Sumio Iijima [5].
Sahua: An overview on methods for the production of carbon nanotubes, Journal of Industrial and Engineering Chemistry,Vol. 20, Issue 4, pp. 1186-1197, 2014 [7] J.
Ganesh: Single Walled and Multi Walled Carbon Nanotube Structure, Synthesis and Applications, International Journal of Innovative Technology and Exploring Engineering (IJITEE), Vol. 2, Issue 4, 2014 [9] Labaj M.
The Journal of Physical Chemistry.
American Chemistry Society 2015, Vol. 119, pp. 7506-7516.

The results showed the products on the glass surface are flowerlike body centered cubic structure of In2O3 films.
These peaks correspond to the body centered cubic structure of In2O3 (JCPDS card NO. 06 - 0416).
The as-prepared In2O3 film is body centered cubic structure and exhibits flowerlike morphology.
Devika, Optical properties of In2O3 films prepared by spray pyrolysis, Materials Chemistry and Physics 100 (2006) 375-379
Morsali, Nano-porous indium(III) metal-organic framework as a novel precursor for synthesis of In2O3 nanoparticles, Inorganic Chemistry Communications 14 (2011) 450-452

Development of continuously cooled high strength bainitic steel through microstructural engineering at Tata Steel Sourav Das1,*, Saurabh Kundu2, Arunansu Haldar1 1 Research and Development, Tata Steel Limited, Jamshedpur, PIN: 831007, India, 2 Global Wires and Long Product Technology Group, Tata Steel Limited, Jamshedpur, India * Corresponding author sourav.das@tatasteel.com, saurabhkundu@tatasteel.com, arunansuhaldar@tatasteel.com Key words: Nano-structured bainite, TTT, T0, austenite, ultra high strength steel Abstract: Bainitic steels, which are transformed at very low temperatures, offer an excellent combination of strength and ductility where the strength comes from the nano-structured bainitic plates and thin-film of austenite sandwiched between two bainite sheaves offers the ductility.
The main drawback of this structure is the long transformation time which is not ideal for industrial application.
Keeping in mind all the above mentioned conditions, a particular chemistry (Table 1) was chosen for final tests.
Experimental procedure: A 25 kg heat was made in an air-induction furnace at the R & D Division, Tata Steel following the chemistry given in Table 1.

Characterization of Virtual Nano-Structures through the use of Monte Carlo Integration Luis F.
These molecular models have removed the constraints of traditional adsorption theories, which require rigid assumptions about the structure of a material.
Rouquerol, et al.: Pure and Applied Chemistry Vol. 66 (1994), p. 1739 [3] D.D.
Kiselev: Chemistry and Physics of Carbon Vol. 6 (1970), p. 1 [5] A.

Guangyan: Journal of solid state Chemistry, vol. 178 (2005) No.3, p. 645
Qiu: The Journal of Physical Chemistry C, vol. 118 (2014) No.14, p. 7515
Qiu: Journal of Physics and Chemistry of Solids, vol. 73 (2012) No.9, p. 1182
Kijima: Chemistry of Materials, vol. 19 (2007) No.18, p. 4592
Mitomo: Chemistry of materials, vol. 18 (2006) No.23, p. 5578.

A possible solution to this problem is to reduce the number of degrees of freedom through the mapping of an atomistic model onto coarse grained structures.
The centers of these superatoms are indicated by bolded circles on the atomistic chemical structures.
M., Poly (ethylene glycol) chemistry: biotechnical and biomedical applications, Springer 1992
[8] Chebaro, Y., Dong, X., Laghaei, R., Derreumaux, P., Mousseau, N., The Journal of Physical Chemistry B 2008, 113, 267-274
C., The Journal of Physical Chemistry 1993, 97, 9206-9212