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Pore structure parameters of zeolite before and after modification SBET Smi Se SBJH Vt Vmi V BJH Wp (m2.g-1) (m2.g-1) (m2.g-1) (m2.g-1) (mL.g-1) (mL.g-1) (mL.g-1) (Å) t-Plot t-Plot BJH t-Plot BJH BET(4V/A) natural zeolite 21.3252 2.3490 18.9762 23.1651 0.05435 0.000911 0.06755 101.9453 modified zeolite 21.9072 3.8559 18.0513 22.8694 0.09426 0.001607 0.10979 172.0987 BET model was adopted to describe the specific area(SBET), average pore size(Wp), total pore volume(Vt ).
As shown in Figure 3, chitosan was combined with zeolite and surface structure of graticule mesh was formed.
This organic-inorganic structure could provide weak polar circumstance and was favor to absorb bisphenol A which possesses weak polar too.
Mark Jr., Activated carbon: surface chemistry and Adsorption from Solution, Marcel Dekker, New York, 1971

Moreover, the structure of carbon nanodot (CND) can be passivated by oxygen, hydrogen and doped elements in order to be controllable the photoluminescence-color changing and for specific abilities [2].
The major structures are possibly analogous to either amorphous or nanocrystalline carbon nanoparticles comprising sp2-sp3 hybridized domains and functionalized oxygen, hydrogen and nitrogen based groups [16].
The existence of such passivated oxide groups on the carbon based structure during the carbonization of hydrocarbon were confirmed in FT-IR spectrum of R-CNDs as shown in Fig. 4.
Lei, Fluorescent carbon dots and their sensing applications, TrAC Trends in Analytical Chemistry 89 (2017) 163-180

Introduction Block copolymers with well-defined structures can self-assembly into micelles, rods, vesicles, and so on.
To prepare the well-defined block copolymer structures, controlled/”living” radical polymerizations, such as nitroxide-mediated polymerizations (NMP)[1], atom transfer radical polymerization (ATRP)[2] and the reversible addition-fragmentation chain transfer (RAFT)[3], generally utilized in connection with suitable purification methods.
The structures and properties of PVAc-b-PNVA were characterized.
The Chemistry of Free Radical Polymerization, Pergamon.Oxford, (1995), p. 257

Processing Science of Isotactic Polypropylene Fiber reinforced with Halloysite Nanotubes Based on Masterbatch Dilution Technique Yang Lu1, a, Andre Lee2, b, Xiufang Wen1, c, Pihui Pi1, d, Jiang Cheng1, e and Zhuoru Yang1,f 1 College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China 2 Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing, United States alu.lyang@mail.scut.edu.cn, bleea@egr.msu.edu, cxfwen@scut.edu.cn, dphpi@scut.edu.cn, ecejcheng@scut.edu.cn, fzhryang@scut.edu.cn Keywords: Isotactic Polypropylene, Halloysite Nanotubes, Processing Abstract.
Halloysite nanotubes, a type of minerals with needle structures, are classified as hydrated HNT with a crystalline structure of 10Å d-spacing ().
It can be concluded that the air cooling time has greater impact on the mechanical behavior of iPP0.8 compared to that of iPP because of the thermodynamically unstable and anisometric structure which needs more time for iPP0.8 to solidify, relax or lead to the decreasing disentanglement of short chains upon crystallization.

Both exist in tetragonal structure.
The outside stability and the transition between different phases of TiO2 also change the shape, size, and crystal structure of TiO2 nanomaterials .
Reynders, Angle-Dependent Optical Effects Deriving from Submicron Structures of Films and Pigments, Chemical Reviews 99 (1999) 1963-1982
Lim, Low-temperature synthesis and microstructural control of titania nano-particles, Journal of Solid State Chemistry 177 (2004) 1372–1381

Influence of the Type of Wood Flour and Nano-Additives on Structure and Mechanical Properties of Wood-Polymer Composites Based on Polypropylene / I.Z.
Nikiforov // Mechanics, Resource and Diagnostics of Materials and Structures (MRDMS-2016) AIP Conf.
Influence of Nanofillers on the Structure of Wood-Polymer Composites / I.Z., Fayzullin, S.I.
Filippov // XX Mendeleev Congress on general and applied chemistry.

Particularly, graphene, a two-dimensional crystal with honeycomb lattice structure, discovered by Geim and Novoselov in 2004[1], has attracted a huge interest among the scientists for its special electronic properties[2] and excellent electrical, mechanical, thermal and optical properties[3].
They measured double carbon atomic chains and some doped structures for different length chains[19].
The perfect structure they adopt shows a perfect spin filter.
Wang: Physical Chemistry Chemical Physics, Vol.18 (2016), No.16

The muscovite, obtained from the Kuletskoye deposit schists, is characterized by more homogeneous breakup and better flake structure than the same from the Mamskoye deposit.
To investigate the grinding and thermal decomposition processes the muscovite from the Kuletskoye deposit having better structure and chemical purity was chosen.
The provided data, due to the mica flake and plate structure, differ from the data, obtained for brittle materials with a particle shape close to spherical.
In addition, the grinding of the muscovite was carried out in an industrial planetary mill having drums with a volume capacity of 2 liters at the Institute of Solid State Chemistry and Mechanochemistry (Novosibirsk).

Furthermore, the use of advanced analytical techniques including high-resolution transmission electron microscopy (HRTEM) and X-ray photoelectron spectroscopy (XPS), can provide significant insights into the surface chemistry and structure of the catalyst hence allowing the optimization of its properties and performance [5].
For example, their high surface area and complex surface structure can increase the number of active sites available for catalytic reactions, thus increasing the reaction rate.
The combination of unique crystal structure with severe lattice distortion, residual stress and stored plastic deformation energy of HEAs provided higher potential energy and active sites [12] which were responsible for excellent degradation capacity of HEAs powder toward an azo dye (methyl orange).

Synthesis of strontium substituted hydroxyapatite through different precipitation routes Liga Stipniece1,a, Kristine Salma-Ancane1,b, Dagnija Loca1,c, Sintija Pastare1,d 1Rudolfs Cimdins Riga Biomaterials Innovations and Development Centre of RTU, Institute of General Chemical Engineering, Faculty of Materials Science and Applied Chemistry, Riga Technical University,  Pulka 3, Riga, LV-1007, Latvia aliga.stipniece@rtu.lv, bkristine.salma-ancane@rtu.lv, cdagnija.loca@rtu.lv, dsintija.pastare@gmail.com Keywords: hydroxyapatite, precipitation route, strontium ions, substitution Abstract.
Substitution of various (Sr2+, Zn2+, Mg2+, Cu2+ etc.) cations in the Ca site of hydroxyapatite (HAp) crystal structure is accompanied by changes in the lattice parameters [1-4].
Molecular structure of the powders were studied using Fourier transformation infrared spectroscopy (FT-IR, Varian 800).
Rossi, The structure of strontium - doped hydroxyapatite: an experimental and theoretical study, Phys.