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Online since: March 2022
Authors: Emmanuel Ikechukwu Ugwu, Jonah Chukwuemeka Agunwamba
Journal of Industrial and Engineering Chemistry 21,414–422
Arabian Journal of Chemistry 7, 101–108
Journal of Physical Chemistry, 57, 385-470
Integrated Study of the Porous Structure of Activated Carbon from Carbonized Sucrose.Carbon, 2: 261 - 268
Pore structure and adsorption performance of the KOH-activated carbons prepared from corncob.
Online since: September 2015
Authors: Monika Kašiarová, Miroslav Hnatko, Pavol Šajgalík, Zuzana Pramuková Vilčeková, Magdaléna Precnerová Domanická
Local Mechanical Properties of Highly Porous Si3N4 for Trabecular Bone Replacement Zuzana Pramuková Vilčeková1,a*, Monika Kašiarová1,b, Magdaléna Precnerová Domanická2,c, Miroslav Hnatko2,d and Pavol Šajgalík2,e 1Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, Košice, Slovakia 2Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dúbravská cesta 9, Bratislava, Slovakia azvilcekova@imr.saske.sk, bmkasiarova@imr.saske.sk, cmagdalena.domanicka@savba.sk, duachmiho@savba.sk, euachsajg@savba.sk Keywords: Silicon nitride, trabecular bone, hardness, young’s modulus, yield strength Abstract.
These materials were produced using replication method with polyurethane foams as pore-forming agents to achieve similar porous structure to trabecular bone.
Prepared porous ceramics had a bimodal pore structure with macro-pores larger than 200 µm and micro-pores smaller than 1 µm in diameter, which are necessary for tissue ingrowths, cell adhesion, adsorption of biological metabolites and nutrition delivery in organism.
Introduction Highly porous materials are attracting considerable interest due to their unique morphology and structure property relationship.
Online since: November 2012
Authors: Rajeev Sehrawat, Anjan Sil
The higher conductivity of the composite synthesized with (NH4)2S2O8 may be attributed to the presence of partial chain structure in polymer coating as seen by microstructural observations on the composite. 1.
All the peaks of XRD pattern (fig. 2(a)) represent pure single phase, olivine type, orthorhombic Pnma structure of LiFePO4 (JCPDS card no-98-010-7897).
This may be due to the presence of partial chain structure in polymer coating as can be seen from microstructural observations on the composite (fig. 1(b)).
Wang, and Haoshen Zhou, The design of a LiFePO4/Carbon nanocomposite with a core–shell structure and its synthesis by an in situ polymerization restriction method, Angew.
Electrochemical properties of LiFePO4/C composite cathode material:Carbon coating by the precursor method and direct addition, Journal of Physics and Chemistry of Solids, 69 (2008) 1257-1260
Online since: August 2011
Authors: Xiao Li Dai, Xiang Wang, Jun Wang
The SEM morphology revealed that vacuum infusion composite had more homogeneous micro- structure.
It is seen that all the coefficient of variation (CV) about density is below 3%, which means all processes are able to manufacture composite having a homogeneous structure.
The SEM morphology revealed that VI composite had more homogeneous micro- structure.
Abele, in: Polyurethane handbook: chemistry, raw materials, processing, application, properties, edtied by G.
Online since: August 2017
Authors: Hui Tang, Chuan Pin Zou, Bo Chen, Yong Peng Huang, Jian Lan Jiao
Preparation and Characterization of Pentoxyverine Citrate Micro-Nano Particle Aggregations Bo Chen1, Hui Tang1, Yongpeng Huang1, Jianlan Jiao1, and Chuanpin Zou1,a* 1Beijing Institute of Pharmaceutical Chemistry, Beijing 102205, China asuixun070821@sina.com Keywords: Micro-nano particle aggregation, Spray freeze drying, Dry powder inhalation, Pentoxyverine citrate, Characterization Abstract.
Micro morphologies of aggregations are porous spherical foamy structure formed by flaky micro-nano particles.
In low supersaturation mode, aggregations exhibited a high porosity foamy micro structure.
Because of the sloughing of foamy structure, D(V, 90) was only 2.32 μm in the situation of 1.5 times supersaturation.
Online since: August 2013
Authors: Wei Wei, Yin Yin Wu, Jian Jun Zhu, Ji Min Xie, Min Chen
Solvent recovery of silica aerogel monoliths synthesis and adsorption of trivalent chromium ions Jianjun Zhu1,a, Wei Wei1,b, Yinyin Wu1,c, Jimin Xie1,d and Min Chen1,e 1School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China aZhjj029@sohu.com, bwwqsjxp@163.com, creynoldmoon@gmail.com, dXiejm391@sohu.com, echenmmin3226@sina.com Keywords: Silica aerogel monolith, Ambient pressure, Solvent recovery, Adsorption Abstract.
The prepared aerogels were characterized by scanning electron microscope (SEM), and Brunauer-Emmett-Teller method (BET).The result indicated that silica aerogel monoliths synthesized via these conditions had a excellent structure and fascinating properties (bulk density of 0.254 g/cm3, specific surface area of 770.5 m2/g).
Figure 4 shows the scanning electron microscopy (SEM) which indicates that the prepared aerogel was a porous material with a continuous network structure.
The prepared aerogel possessed high specific area of ~770 m2/g and typical mesoporous network structure (pore size of 9.3 nm).
Online since: September 2013
Authors: Rukkiat Jitchati, Kittiya Wongkhan, Preeyapat Prompan
Design and synthesis of ruthenium (II) complexes and their applications in dye sensitized solar cells (DSSCs) Preeyapat Prompan, Kittiya Wongkhana and Rukkiat Jitchatib* Center for Organic Electronic and Alternative Energy (COEA), Department of Chemistry, Faculty of Science, UbonRatchathani University, Warinchumrap,Ubon Ratchathani Province, 34190, Thailand kitt_w_2000@yahoo.ie,a rukkiat_j@hotmail.comb Keywords: Dye-syntizingsolar cell (DSSCs); ruthenium complex; bipyridine Abstract.
The structures of ruthenium complexes were characterized by 1H, 13C NMR and IR spectra.
The example of a molecular structure of Ru(II) complex dyes Herein, we report the synthesis and characterization of a new thiocyanate-free cyclometallated 2-phenylpyridine Ru(II) complexes which were used as a materials in DSSCs application.
The molecular structures of ruthenium complex were characterized and identified by 1H, 13C NMR and IR spectra.
Online since: January 2012
Authors: Zhi Ming Cheng, Fu Jun Zhang
Organic light emitting diodes based on the structure of ITO/PEDOT:PSS/PVK:PSS/PVK:Eu/Bphen(12 nm)/LiF(1 nm)/Al were fabricated, the electroluminescence of Eu3+ complex was investigated under different driving voltage.
The detailed theoretical value % (experimental%) are shown in the Table 1: Eu: 22.86% (22.89%),C: 25.26% (25.23%),H: 3.31 % (3.28 %),N: 4.21% (4.23%),O: 33.68% (33.72%),By analysising the theoretical and experimental values, the structures of Eu3+ complex should be determined as [Eu(DPA)2(Cl)2]·6H2O。
Conclusions A new europium complex [Eu(DPA)2(Cl)2]•6H2O was synthesized by solid-state reactions method, the chemical structure was determined by elemental analysis and FTIR spectra.
Lehn, Perspectives in Supramolecular Chemistry—From Molecular Recognition towards Molecular Information Processing and Self-Organization , Angew.
Online since: September 2013
Authors: Yu Hong Zhou, Ye Li, Li Fu, Chen Juan Liu
Platinum Nanoparticles Supported on Noncovalent Functionalized Graphene as Cathode Catalysts for Aluminum-air Batteries YuHong Zhou1,a, ChenJuan Liu1,b, Ye Li1,c, Li Fu1,d, 1Department of Chemistry, School of Science, Harbin Institute of Technology, Harbin 150001,China ayuhong806@yahoo.com.cn, bchenjuan_liu@hotmail.com, cliye2013ziliziqiang@yahoo.com.cn, dfulizhangxiuxia@hotmail.com Keywords: Graphene; Pt nanoparticles; Electrocatalyst; Aluminum-air battery Abstract.
The structure, morphology, composition and surface properties of the as-prepared catalysts Pt/graphene are characterized by X-ray powder diffraction (XRD) and transmission electron microscopy (TEM).
Previous work has demonstrated that a GNS cathode could deliver an extremely high discharge capacity and was an ideal three-dimensional and three-phase electrochemical air electrode due to its unique morphology and structure in fuel cells [2].
The crystal structure and phase of the as-prepared Pt nanoparticles catalyst deposited on 1, 10-Phenanthroline-functionalized GNS were characterized by X-ray diffraction (XRD, PANalysical) using Cu Ka radiation with 2θ ranging from 10°to 80°at a scanning step 0.01°/min.
Online since: September 2013
Authors: Chun Ming Zhang, Shao Wei Wang, Qiao Feng Liu, Jing Ru Han, Hai Ying Chen
The near surface disposal sites’ natural barriers were analyzed from the crustal structure and the radionuclide adsorption characteristics of natural barriers.
The guideline pointed out explicitly that the areas with good structure, geological and climatic characteristics should be firstly considered, then within these areas, the siting work should be gradually concentrated in smaller and more suitable places[8].
Stratum structure and lithology analysis are crucial.
In the study of repository barrier wall and bottom, usually the hydrogeochemistry, radioactive geology, soil chemistry and geology theoretical knowledge and technology are used.