International Journal of Inorganic Materials最新文献_第8页

A convenient hydrothermal route to mineral Ag3CuS2 nanorods 热液制备矿物Ag3CuS2纳米棒的便捷途径

International Journal of Inorganic Materials Pub Date : 2001-11-01 Epub Date: 2001-11-19 DOI: 10.1016/S1466-6049(01)00163-5

J.Q Hu, B Deng, W.X Zhang, K.B Tang, Y.T Qian

引用次数: 24

Comparison between excimer laser irradiation effects in FeCr-based metallic glass and stainless steel 准分子激光辐照在铁铁基金属玻璃和不锈钢中的效果比较

International Journal of Inorganic Materials Pub Date : 2001-11-01 Epub Date: 2001-11-19 DOI: 10.1016/S1466-6049(01)00175-1

Monica Sorescu

{"title":"Comparison between excimer laser irradiation effects in FeCr-based metallic glass and stainless steel","authors":"Monica Sorescu","doi":"10.1016/S1466-6049(01)00175-1","DOIUrl":"10.1016/S1466-6049(01)00175-1","url":null,"abstract":"<div>Pulsed excimer laser (248 nm, 8 ns) irradiation of Fe77Cr2B16Si5 metallic glass produces an out-of-plane reorientation of magnetic moment directions as well as changes in the resonant area of the Mössbauer spectra which depend on the irradiation time. Scanning electron microscopy (SEM) determinations linked these changes to the occurrence of molten zones subsequently resolidified. For comparison, Mössbauer spectra of the Fe/Cr18/Ni8/Ti magnetic steel showed additional features in the probability distribution of the hyperfine magnetic field, while the distribution of the Fe/Cr18/Ni8/Mo3 nonmagnetic steel remained unchanged after laser processing. For both steels, the distribution area in the Mössbauer spectra was found to decrease steadily as a function of irradiation time and the magnetic hyperfine fields showed maxima after 10 s/spot. SEM/EDX examination of the laser irradiated areas demonstrated that Ti atoms are displaced from these zones and suggest atomic rearrangements related to the features observed in the distributions of probability.</div>","PeriodicalId":100700,"journal":{"name":"International Journal of Inorganic Materials","volume":"3 7","pages":"Pages 813-818"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1466-6049(01)00175-1","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77259865","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Mechanism of ionic conduction in oxy and hydroxyapatite structures 氧和羟基磷灰石结构中的离子传导机制

International Journal of Inorganic Materials Pub Date : 2001-11-01 Epub Date: 2001-11-19 DOI: 10.1016/S1466-6049(01)00054-X

A Bouhaouss , A Laghzizil , A Bensaoud , M Ferhat , G Lorent , J Livage

{"title":"Mechanism of ionic conduction in oxy and hydroxyapatite structures","authors":"A Bouhaouss , A Laghzizil , A Bensaoud , M Ferhat , G Lorent , J Livage","doi":"10.1016/S1466-6049(01)00054-X","DOIUrl":"10.1016/S1466-6049(01)00054-X","url":null,"abstract":"<div>Knowledge of the ionic transport properties of apatites is important in uderstanding their physical and chemical properties. This report reviews and updates results obtained on the alternating current impedance characteristics of synthetic apatites. The possible mechanism of the conduction properties of various oxy and hydroxyapatites are discussed on the basis of the structural data. It is deduced that charge carrying protons are responsible for the observed conductivities in M10(PO4)6(OH)2. The H+ migration between the electoattractive ion (O2−) to give molecular H2O in matrix channels. However, in some vanadium oxyapatites containing lanthanum Ca10−xLax(VO4)6O1+x/2, the ionic conductivities observed are explained by the frequent hopping of oxygen ion along the c axis of the hexagonal matrix. The study of the conductivity relaxation shows structural aspects of these electrolytes.</div>","PeriodicalId":100700,"journal":{"name":"International Journal of Inorganic Materials","volume":"3 7","pages":"Pages 743-747"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1466-6049(01)00054-X","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75805328","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 33

Synthesis of nanostructured mesoporous zirconia using CTMABr–ZrOCl2·8H2O systems: a kinetic study of synthesis mechanism ctmbr - zrocl2·8H2O体系合成纳米介孔氧化锆:合成机理的动力学研究

International Journal of Inorganic Materials Pub Date : 2001-11-01 Epub Date: 2001-11-19 DOI: 10.1016/S1466-6049(01)00084-8

J.L Blin, R Flamant, B.L Su

{"title":"Synthesis of nanostructured mesoporous zirconia using CTMABr–ZrOCl2·8H2O systems: a kinetic study of synthesis mechanism","authors":"J.L Blin, R Flamant, B.L Su","doi":"10.1016/S1466-6049(01)00084-8","DOIUrl":"10.1016/S1466-6049(01)00084-8","url":null,"abstract":"<div>A systematic kinetic study of mesoporous zirconia formation has been performed in order to optimize the synthesis conditions without addition of structure stabilizing agents such as sulfate or phosphate anions. We have investigated in particular the effect of synthesis time and temperature. On the basis of TEM, SEM, XRD and N2 adsorption–desorption results, a synthesis mechanism has been proposed. It is observed that at low temperature or for short durations at higher temperatures, the obtained materials are first supermicroporous, then if hydrothermal treatment is prolonged, a breakdown of the walls separating adjacent pores allows the transformation to mesopores. The obtained materials have a uniform pore size and their surface can reach 300 m2/g. The channel array is, at least part of samples, wormlike. However, if hydrothermal treatment is performed at too high temperature or for too long durations, mesoporous compounds are no longer obtained, but thermodynamically more stable crystalline zirconium oxides with very low specific surface area, namely the tetragonal and monoclinic forms, are the final phases.</div>","PeriodicalId":100700,"journal":{"name":"International Journal of Inorganic Materials","volume":"3 7","pages":"Pages 959-972"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1466-6049(01)00084-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72990425","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 66

Melanin-like units concentration effects in melanin-like/vanadium pentoxide hybrid compounds 类黑色素单位浓度对类黑色素/五氧化二钒杂化化合物的影响

International Journal of Inorganic Materials Pub Date : 2001-11-01 Epub Date: 2001-11-19 DOI: 10.1016/S1466-6049(01)00184-2

E. Arashiro , E.C. Zampronio , C.A. Brunello , T.A.F. Lassali , H.P. Oliveira , C.F.O. Graeff

{"title":"Melanin-like units concentration effects in melanin-like/vanadium pentoxide hybrid compounds","authors":"E. Arashiro , E.C. Zampronio , C.A. Brunello , T.A.F. Lassali , H.P. Oliveira , C.F.O. Graeff","doi":"10.1016/S1466-6049(01)00184-2","DOIUrl":"10.1016/S1466-6049(01)00184-2","url":null,"abstract":"<div>An intercalated material has been prepared consisting of a regular alternation of organic/inorganic layers. The films were obtained by reacting 3,4-dihydroxy-phenylalanine (dl-DOPA) with varying concentrations in a solution with freshly prepared HVO3, which suffered a oxidative polymerization/intercalation ‘in situ’ process, forming a green suspension, in which after de-hydration at room temperature produces a nanocomposite with a dark blue metallic color. Films (C8H9NO2)xV2O5·nH2O were characterized using FT–IR, ESR, powder X-ray diffraction, conductivity, and cyclic voltammetry. The X-ray diffractograms indicate that the lamellar structure of the V2O5 is preserved for low concentrations of melanin-like units (x<0.02), but the inter-planar space increases from 1.2 nm to ca. 1.5 nm. The FT–IR and ESR spectra confirm that the V2O5 structure is preserved, however the presence of melanin-like units induces the reduction of V(V) ions to V(IV) ions. The melanin insertion is observed to increase the stability and reproducibility of the electrochemical insertion/de-insertion of Li+. The incorporation of melanin-like structures increases the conductivity, followed by a decrease in its temperature activation energy.</div>","PeriodicalId":100700,"journal":{"name":"International Journal of Inorganic Materials","volume":"3 7","pages":"Pages 727-731"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1466-6049(01)00184-2","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79480930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Influence of particle size on the antibacterial activity of zinc oxide 粒径对氧化锌抑菌活性的影响

International Journal of Inorganic Materials Pub Date : 2001-11-01 Epub Date: 2001-11-19 DOI: 10.1016/S1466-6049(01)00197-0

Osamu Yamamoto

引用次数: 840

Crystal growth of praseodymium molybdate by gel method 凝胶法制备钼酸镨晶体生长

International Journal of Inorganic Materials Pub Date : 2001-11-01 Epub Date: 2001-11-19 DOI: 10.1016/S1466-6049(01)00192-1

Sanjay Pandita , Vinay Hangloo , K.K. Bamzai , P.N. Kotru , Neera Sahni

引用次数: 6

Direct precipitation of spinel type oxide ZnGa2O4 from aqueous solutions at low temperature below 90°C 在90℃以下的低温下，从水溶液中直接析出尖晶石型氧化物ZnGa2O4

International Journal of Inorganic Materials Pub Date : 2001-11-01 Epub Date: 2001-11-19 DOI: 10.1016/S1466-6049(01)00178-7

Masanori Hirano, Shiro Okumura, Yasunori Hasegawa, Michio Inagaki

引用次数: 26

Crystal structure of a new vanadium(IV) diphosphate: VP2O7, prepared by lithium extraction from LiVP2O7 用锂萃取法制备新型二磷酸钒VP2O7的晶体结构

International Journal of Inorganic Materials Pub Date : 2001-11-01 Epub Date: 2001-11-19 DOI: 10.1016/S1466-6049(01)00092-7

Gwenaëlle Rousse , Calin Wurm , Mathieu Morcrette , Juan Rodriguez-Carvajal , Joël Gaubicher , Christian Masquelier

{"title":"Crystal structure of a new vanadium(IV) diphosphate: VP2O7, prepared by lithium extraction from LiVP2O7","authors":"Gwenaëlle Rousse , Calin Wurm , Mathieu Morcrette , Juan Rodriguez-Carvajal , Joël Gaubicher , Christian Masquelier","doi":"10.1016/S1466-6049(01)00092-7","DOIUrl":"10.1016/S1466-6049(01)00092-7","url":null,"abstract":"<div>A new vanadium(IV) diphosphate, VP2O7, was obtained by lithium extraction from LiVP2O7. The parent compound, LiVP2O7, is built on [P2O7] groups and [VO6] octahedra and its structure has been confirmed by Synchrotron X-ray powder diffraction. The extraction of one lithium, both electrochemically or chemically, leads to VP2O7 which presents a totally different diffraction pattern diagram. The crystal structure of this new compound was determined from Synchrotron X-ray powder diffraction on the chemically prepared sample. The framework of LiVP2O7 is maintained upon lithium extraction, and VP2O7 crystallizes in space group P21. Compared to LiVP2O7, there is a very large cell distortion due to a modification of the shape of the tunnels that contained lithium ions along with an oxidation of the vanadium VIII to VIV that induces shorter V–O bond lengths. The phase transformation from LiVP2O7 to VP2O7 is found to be displacive and not reconstructive.</div>","PeriodicalId":100700,"journal":{"name":"International Journal of Inorganic Materials","volume":"3 7","pages":"Pages 881-887"},"PeriodicalIF":0.0,"publicationDate":"2001-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1466-6049(01)00092-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85784767","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 27

Application of inorganic polymeric materials 无机高分子材料的应用

International Journal of Inorganic Materials Pub Date : 2001-11-01 Epub Date: 2001-11-19 DOI: 10.1016/S1466-6049(01)00162-3

Azam Rahimi, Parvin Shokrolahi

引用次数: 36