Search results

This study has focused on the ethanol production from different sizes and structures of rice husk cellulose.
It is able to efficiently decrease the cellulose crystalline and changed the structure of cellulose I to the swollen cellulose II structure leading to an increase of hydrolysis by enzyme.
NMMO is a good alternative solvent in the pretreatment for changing the cellulose structure and enhanced to hydrolysis with enzyme.
Stroeve, Methods for Pretreatment of lignocellulosic biomass for efficient hydrolysis and biofuel production, Industrial & Engineering Chemistry Research. (2009), 48 (8), 3713-3729
Yu, Swelling and dissolution of cellulose in NaOH aqueous solvent systems, Cellulose Chemistry and Technology. (2013), 47 (9-10), 671-679

Hydroxylation was achieved using Fenton chemistry and changes in surface hydrophobicity are confirmed using contact angle measurements.
Si face growth generally produces fewer graphene layers, but exhibits an interface, which modifies its electronic structure [9].
W. (2001), Clinica chimica acta; international journal of clinical chemistry 314, 1. [12] Skládal, P. (1997), Electroanalysis 9, 737--745. [13] Rhodes, D.
E. (2001), Analytical chemistry 73, 2476--2483. [20] Camara, N., Tiberj, A., Jouault, B., Caboni, A., Jabakhanji, B., Mestres, N., Godignon, P., & Camassel, J. (2010), Journal of Physics D: Applied Physics 43, 374011. [21] Bradley, R.
P. (2003), Journal of Electroanalytical Chemistry 549, 119--127.

The molecular structures of the resulting their imide are shown in Fig. 1.
Journal of Materials Chemistry, 2010. 20(3): p. 531-536
Journal of Polymer Science Part A: Polymer Chemistry, 2008. 46(24): p. 7937-7949
Journal of Polymer Science Part A Polymer Chemistry, 1998. 36(11): p. 1685-1698
Journal of Polymer Science Part A: Polymer Chemistry, 2004. 42(6): p. 1293-1309

The structure of synthesized ZnS:Mn2+ QDs were characterized by X-ray diffraction analysis.
To reveal the structure the PL spectra was fitted by accumulated sum of Gaussian functions.
Postnova (Institute of Chemistry of FEB RAS) for synthesis of ZnS:Mn2+ quantum dot solutions.
Brus, Electronic wave functions in semiconductor clusters: experiment and theory, The Journal of Physical Chemistry.
Meijerink, Luminescence quantum efficiency of nanocrystalline ZnS:Mn2+ enhancement by UV irradiation, The Journal of Physical Chemistry B. 105 (2001) 10203-10209

Ab initio investigations of electronic structure and optical properties of Ag-F codoped ZnO Jing Wen 1, a, Chunying Zuo 1,b and Cheng Zhong 2,c 1 College of Arts and Science, Heilongjiang Bayi Agricultural University, Daqing 163319, China 2 College of Chemistry and Molecular Sciences of Wuhan University, Wuhan 430072, China awenj3008@126.com, bchunyingzuo@126.com, czhongcheng001@126.com Keywords: semiconductors; ab initio calculations; electronic structure; optical properties Abstract.
Fig. 1 The supercell structure of Ag-F codoped ZnO Fig. 2 The band structures of pure ZnO (a), Ag doped ZnO (b), and Ag-F codoped ZnO (c).
Fig. 2(a) shows the band structure of pure ZnO.
The electronic structures show that Ag doped ZnO shows p-type conduction character, but there are some unstable factors and self-compensation in this structure.
Vol. 67 (1991), p. 2339 [16]Handbook of chemistry and physics, 73 ed., edited by D.

In this research the questions of microsilica usage and ways of its activation for modification of structure of cement stone and cement on its basis.
The actual questions corresponding any type of filler, particularly microsilica are: how and how much should be put, which mechanisms are involving to process of structuring, how much is received result of structure modification and others.
One of the easy and effective tool is modification of structure of cement rock using the catalyzing of mineral additives of cement.
Methodological basis of research were general provisions of constructional material engineering in area of cement structuring and terms of modern chemistry, concerning ways of transfer of particles of microsilica to active form.
Ailer, Colloid chemistry of microsilica and silicates Chemistry of microsilica, Mir, Moscow, 1959

SEM analysis revealed the cellular structure with different density.
The versatility of the polyurethane-imide chemistry allows producing a wide range of materials ranging from soft flexible foams to tough rigid foams.
Cell is the basic unit of cellular structure [3].
Results and Discussion Cellular Structure.
Finally, with the occurrence of gel, cellular structure was fixed.

X-ray diffraction showed that the crystal structure of PAN fibers has been converted from quasi-crystalline structure into partially crystallized structure after modification treatment.
According to different production processes and distinct ways of adding fire retardant, there were four measures have been developed during the past decades, including copolymerization, blending, chemistry modification, and finishing modification etc.[3] .
Diffraction curve obtained typically characteristic of crystalline structure, to a certain extent, it shown fibers occurred huge change of macromolecular crystalline structure which after hydrolytic, cyclization and crosslinking.
Then the partially ordered structure of PAN fibers has also formed.
Advances in Materials Physics and Chemistry, Mexico D.

This is possible because of the presence of non-covalent links in their structure.
The presented article will firstly, provide a parallel description of the vitrimer and its corresponding characteristics, along with an explanation of the underlying chemistry.
Chemistry of Vitrimer.
Classification of the major involved chemistries in vitrimer.
Gould, "Self-help for ailing structures," Materials Today, vol. 6, no. 6, pp. 44-49, 2003/06/01/ 2003, doi: https://doi.org/10.1016/S1369-7021(03)00633-3

Formed structure is highly hydrated porous hydrogel.
Chitosan scaffolds structure was conducted using optical and electron microscopy.
Hydrogel structure obtained on the cathode contained 70-78% water by mass.
Physics and Chemistry of Solids vol. 69 (2008), p.1573–1576; [5] Y.
Tylman: Porous chitosan structures for medical applications, Monograph: Progress on Chemistry and Application of Chitin and its Derivatives Polish Chitin Society vol.XV (2010). p. 97-105; [9] M.