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More free water can be released from the flocculated structure, and the free water are believed to increase the mobility of cement particles effectively.
Goisis, et al, Effects of superplasticizers structure on performance of Portland-based cements, Proc.
Miao, et al, Chemical admixtures- Chemistry, applications and their impact on concrete microstructure and durability, Cem.
Telkki, Determination of pore structures and dynamics of fluids in hydrated cements and natural shales by various 1H and 129Xe NMR methods, Micr.
Sun, et al, NMR study on the pore structure development of cement paste with bleeding during hydration, J.

Secondly, diamine-functionalized mesoporous silica shell was coated onto the sSiO2 to form core-shell structure (sSiO2@DA-RMSS/CTAB).
This type of isotherm curve suggests the presence of characteristic mesoporous structure [20].
Shi, Hollow-structured mesoporous materials: Chemical synthesis, functionalization and applications, Adv.
Zhao, Extension of the Stöber Method to Construct Mesoporous SiO2 and TiO2 Shells for Uniform Multifunctional Core-Shell Structures, Adv.
Han, Effect of surface chemistry and textural properties on carbon dioxide uptake in hydrothermally reduced graphene oxide, Carbon 82 (2015) 590–598

Counter-ion Induced Morphological Control of Polypyrrole/Fe3O4 Nanocomposites in the Presence of Surfactant CTAB Chunming Yanga, Dongbai Xiongb and Hongbo Wangc Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province, College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha 410081, P.
The size of the counter-ions during the connection of micellar molecules could directly induce the formation of the PPy/Fe3O4 composites with various morphologies from spherical nanoparticles, nanofibers or string-bead nano-network to microtube structures.
The main advantages of this approach are that the PPy/Fe3O4 nanocomposites are easy to fabricate, and the morphology is tunable from core/shell nanoparticles to fibrils, tubes or string-bead nanochain structures in order to meet the requirements in different application fields such as microwave absorbing or electromagnetic shielding materials.
Consequently, the oxidative polymerization reaction will continue to proceed between the micelles as well, and finally results in the formation of the string-bead nanochain composites (Fig. 1b) instead of the uniform nanoparticle structures in the case of using FeCl3 as an oxidant.
Experimental results demonstrate that the as-obtained PPy/Fe3O4 nanocomposite was found to be in a more regular nanochain network structure in the presence of citric acid, as shown in Fig. 2 (b).

Graphene Growth by Transfer-Free CVD Method Using Cobalt/Nickel Catalyst Layer Machac Petr1,a*, Hejna Ondrej1,b 1University of Chemistry and Technology, Prague, Technicka 5, 166 28 Prague 6, Czech Republic apetr.machac@vscht.cz, bhejnas.o@gmail.com Keywords: graphene, CVD process, transfer-free process, cold-wall reactor.
Introduction A need for high-speed small-size electronic devices divides the manufacturers into two different groups, either reducing the size of existing structures or developing new promising materials.
The first etchant was the best for structures with cobalt and the last for structures with nickel.
Etching have great impact on the structure, because it rips off the bottommost graphene layers along with the metal.
Further, the SEM pictures of graphene films shows some discontinuity of the structures.

Mehrer 1 1 Institut für Materialphysik, University of Münster, Wilhelm-Klemm-Str. 10 D-48149 Münster, Germany 2 Department of Physical Chemistry, Moscow Steel and Alloys Institute, Moscow, Russia Keywords: Diffusion, intermetallic compound, Fe3Al, radiotracer, order transition.
Three different lattice structures (see Fig. 1) exist for Fe3Al single-phase alloys: an ordered bcc (D03) structure at temperatures below 823 K, a partially ordered CsCl type (B2) structure in the temperature region from 823 K to about 1100 K, and a disordered bcc (A2) structure at temperatures above 1100 K up to the melting point at about 1780 K.
In the ordered D03 structure � and � sites are occupied only by Fe and � sites only by Al atoms.
It was shown that Mn occupies �-lattice sites in the D03 type structure.
This suggests that Mn occupies �- or �-lattice sites in the less ordered B2 structure.

Monserate2,e 1Rice Chemistry and Food Science Division, Philippine Rice Research Institute, Maligaya, Science City of Muñoz, Nueva Ecija, 3119 Philippines 2Department of Chemistry, College of Science, Central Luzon State University, Science City of Muñoz, Nueva Ecija, 3120 Philippines a*rmbulatao@philrice.gov.ph, bpauljhoneugenio@clsu.edu.ph, csaminjohnpaulo@gmail.com, joel_salazar@clsu.edu.ph, and ejuvy.monserate@clsu2.edu.ph Keywords: anthocyanin, nanoencapsulation, response surface methodology, Box-Behnken design, black rice bran Abstract.
The shifting of OH-groups from 3247.9 cm-1 to 3271.0 cm-1 of the blank chitosan-alginate nanocapsule and CAE-loaded chitosan-alginate nanocapsule confirmed the successful encapsulation of anthocyanin due to the enhanced OH-groups, a functional group present in the molecular structure of anthocyanin.
Siroha (Eds.), Pigmented Cereals and Millets: Bioactive Profile and Food Applications, The Royal Society of Chemistry, United Kingdom, 2023, pp. 207-236

Co-Precipitation Synthesis and Photoluminescence Properties of K2SiF6:Mn4+ Red Phosphor for White Light Emitting Diodes Di Wu1,3,a, Xin-Yu Ye 1,2, Lin-Sheng Wang 1,3, Qing-Hua Zeng 1 1National Engineering Research Center for Ionic Rare Earth, Ganzhou 341000, China 2School of Metallurgy and Chemistry Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China 3Ganzhou Nonferrous Metallurgy Research Institute, Ganzhou 341000, China a511965684@qq.com Keywords: Co-precipitation; K2SiF6:Mn4+; white LEDs; fluoride phosphor Abstract: A novel red-emitting K2SiF6:Mn4+ phosphors with different Mn4+ doping mole fraction were synthesized by co-precipitation method.
As-prepared K2SiF6:Mn4+ phosphors have cubic crystal structure.
It is obvious that all the diffraction peaks can be well indexed to K2SiF6 with a cubic crystal structure in space group Fm-3m (JCPDS card No. 01-075-0694).
So it is concluded that the addition of Mn4+ had no effect on the structure and phase transition of the K2SiF6:Mn4+ sample.
The cubic crystal structure is also clear from the scanning electron microscope (SEM) picture in Figure 2a, where cubic and octahedral particles with a diameter of 15-25μm can be seen, because truncation of cubic particles leads to truncated of truncated cubes, cuboctahedrons and octahedral crystals.

However, the excesses of CTAB concentration at 2 CMC formed a double-layer structure with the hydrophobic tails of the two layers of surfactant interfingered and the headgroups of the second layer pointing to the solution [18].
According to their molecular structure, SDS has 12 carbon atoms while CTAB has 16 carbon atoms, hence, SDS has a lower hydrophobic tail and molecular weight.
Physical Chemistry Chemical Physics. 2007, 9(48), 6333–6343
Journal of Physical Chemistry B. 2016 Jul 28;120(29):7265–74

In general, the structure of atomic lattice on the surface could be classified as two phases: commensurate(C) and incommensurate (IC), which is defined by whether the average lattice spacing constant of chip atoms is a simple rational fraction of the average lattice spacing constant of tool atoms or not.
When it is irrational or the irregularity of grain boundary happens or impurities contain, the structure is discommensurate (DC).
Information Chemistry and Computational Chemistry Experiment.

Hollow tubular structures at the point C are the liquid phase, which is consisting mainly of the solid solution of Ca, Fe, Al, Si, Mg and alkali-metal.
Hydration and paste structure of high belite Portland cement, Journal of the Chinese Ceramic Society. 28(2000,suppl)16-21
[11] H F W Taylor, Cement Chemistry, 2nd edition, NY.OSA: Thomas Telford Services Ltd, 1997
Proceedings of the 8th international congress on the chemistry of cement, Rio de Janeiro, Sub Theme 1.3, Vol.II(1986)363-371.