Synthesis of cobalt and iron based metal organic frameworks and their applications

Controlled synthesis of nanostructures and their optical properties

... 3.3 33 Synthesis and characterization of the CdS|CdSe|CdS and CdSe|CdS|CdSe sandwiched nanorods ………………………… 3.2 32 41 Optical properties of the Au-deposited CdS|CdSe|CdS and CdSe|CdS|CdSe sandwiched ... sandwiched nanostructures In this section, we compared the optical properties of the sandwiched nanorods with that of the pure CdS nanorods, CdSe nanorods and a 1:1 physical mixture of CdS and ... nanocrystals where different materials of various shapes and sizes were combined The focus of the works in this thesis was on the issues of synthesis and optical properties of multi-component nanocrystals...

Novel methods (sonochemistry, microwave dielectric heating, sonoelectrochemistry and RAPET for the fabrication of nanomaterials and their applications

... Temperatures RAPET is being used in our laboratory for the last four years We will show that the RAPET of silanes is yielding the smallest reported SiC particles having the highest surface area The RAPET ... ability to reduce metals for which there is no reducing agent that can it For example, preparing metallic Mg nanoparticles .The last technique was named by us RAPET It stands for Reaction under Autogenic ... The main parameters that determine the particle size in sonoelectrochemistry are temperature, sonication intensity, and the electric pulse width Its main synthetic advantage is the ability...

Báo cáo khoa học: "Genetic transformation: short review of methods and their applications, results and perspectives for forest trees" ppt

... reported for many forest trees including conifers (reviewed in Charest and Michel, 1991) and have not been reviewed in this publication These experiments show the ability of Agrobacterium to transform ... our understanding of the role of genes, promoters or control regions Up to now, there has been a lack of understanding of the structure and function of conifer genes, since only few of them have ... transform forest tree cells Similarly, most of the results obtained by direct transformation procedures concern the transient expression of genes 24 h after DNA introduction (reviewed in Charest and...

structure of cellulases and their applications

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Báo cáo hóa học: " Synthesis of High Coercivity Core–Shell Nanorods Based on Nickel and Cobalt and Their Magnetic Properties" pot

... can render very high coercivity with the higher contribution of shape anisotropy and higher coercivity hybrid nanorods can find applications in fields such Fig M(H) curves of Ni @ Co nanorods; a at ... fabrication of such a one-dimensional system namely Ni @ Co nanorods, which is essentially a core–shell architecture (Ni as core and Co as shell) and studies on their structural and magnetic ... the formation of Ni and Co in two phases Magnetic studies showed that Ni @ Co nanorods exhibited high longitudinal coercivity, and they can find applications in various fields where high coercivity...

Design, synthesis and applications of Metal Organic Frameworks

... Assembly of metal organic frameworks (MOFs) by the copolymerization of metal ions with organic linkers to give (a) flexible metal bipyridine structures with expanded diamond topology and (b) rigid metal carboxylate ... MOFs—namely synthesis of new ligands to expand the library of molecular building blocks for constructing MOFs as well as synthesis of MOFs from those ligands, investigation of several MOF systems ... Assembly of metal organic frameworks (MOFs) by the copolymerization of metal ions with organic linkers to give (a) flexible metal bipyridine structures with expanded diamond topology and (b) rigid metal carboxylate...

Nanoscale metal-organic frameworks synthesis and application of bimodal micromeso-structure and nanocrystals with controlled size and shape

... preparing bimodal micro- and meso-porous MOF nanocrystals, uniform nanosized MOFs with controlled- shape and size and subsequently, the extensive application of the prepared nanosized MOFs The first objective ... preparation of mesoporous MOF nanocrystals and uniform nanoscale MOFs with desired shape and size 1.2 Objectives of the thesis The aim of this thesis is to develop synthetic methods for preparing bimodal ... developed to achieve bimodal micro/mesoporous MOF nanocrystals as well as nanosized MOFs with controlled size and shape In addition, using the synthesized MOF nanocrystals as templates, a new hollow...

Báo cáo hóa học: " Synthesis of Bio-Compatible SPION–based Aqueous Ferroﬂuids and Evaluation of RadioFrequency Power Loss for Magnetic Hyperthermia" docx

... photon energy of diode laser (670 nm) The simulation of the power loss spectrum of the sample was performed for applied field strength of 500Oe in the range 100–900 kHz Results and Discussion ... introduced for hyperthermia application So, the power loss and hence the heat generated becomes a function of domain magnetization, anisotropy and volume of the particle for an AC field of fixed strength ... that the power dissipation at an applied frequency of 800 kHz is 80 W/g and for 200 kHz, 10 W/g for an applied field strength of 200 Oe In this study, the corresponding values of power loss are...

Molecular simulations of biofuel and water purification in metal organic frameworks

... increases with decreasing cavity size and also with increasing the number of carbon atoms in organic linker.140 Jiang and Sandler studied the separation of linear and branched alkanes in IRMOF-1 ... hydrolysis reaction and water stability in MOFs Among MOF-5, IRMOF-10 and MOF-74, they found MOF-74 has a superior resistance to water than other MOFs.149 The presence of water in MOFs influences not ... heats of water adsorption in Li-, Na- and Csexchanged rho-ZMOF as a function of loading 47 Figure 2.8 Locations of water in the single 8-membered ring in Li-, Na- and Cs-exchanged rho-ZMOF at...

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Design and synthesis of stimuli responsive polymer based nanoparticles

... of stimuli- responsive polymers are temperature -responsive polymers and pH -responsive polymers Other types of stimuli- responsive polymers, such as light -responsive polymers, field -responsive polymers ... methodologies for synthesis of stimuli- responsive polymers and the techniques for preparation of smart polymer based nanoparticles In Chapter 3, well-defined comb-like graft copolymers, consisting of a fluorescent ... images of the self-assembled hollow nanoparticles of the KVND copolymer of Table 3.1 in aqueous media: (a) pH and 25 oC, (b) pH and 25 oC and (c) pH and 40 oC The concentration of the copolymer...

Asymmetric synthesis of furan and oxindole derivatives with bifunctional and multifunctional organic catalysts

... development of asymmetric synthesis of furan and oxindole derivatives with tertiary amine thiourea organocatalysts, including enantioselective synthesis of 3(2H)-furanones and 2,3-dihydrofurans with ... ASYMMETRIC SYNTHESIS OF FURAN AND OXINDOLE DERIVATIVES WITH BIFUNCTIONAL AND MULTIFUNCTIONAL ORGANIC CATALYSTS DOU XIAOWEI (B.Sc., Nanjing Univ.) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR OF ... derived bifunctional catalysts, asymmetric formation of 3-spirocyclopropyl2-oxindoles and 3-heteroatom-substituted-oxindoles with L-threonine-incorporating multifunctional catalysts, and a quinine-derived...

Studies of cobalt and iron oxidesoxyhydroxides nanostructures for electrochemical applications

... STUDIES OF COBALT AND IRON OXIDES/ OXYHYDROXIDES NANOSTRUCTURES FOR ELECTROCHEMICAL APPLICATIONS LEE KIAN KEAT (M Sc., Universiti Teknologi Malaysia) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR ... and Han et al.47 1.5 Properties of cobalt compoundsrelevantto electrochemical applications 1.5.1 Electrochemical capacitance and electrochemistry of cobalt compounds Early electrochemical studies ... patterns of cobalt foil heated at 350 °C for various durations (inset) and the magnified XRD pattern of cobalt foil heated at 350 °C for 24 h, (b) XRD patterns of cobalt foil heated at 450 °C for...

Synthesis of metal oxide nanostructures and their applications as lithium ion battery anodes

... IONP@PC and IONP@mC-600 Insets of C and F: SAED patterns of IONP@PC and IONP@mC-600 95 Figure 6-4: Particle size distributions of (A) IONP@PC and (B) IONP@mC-600 96 Figure 6-5 TEM images of IONP@mC-600 ... iron oxides and lithium was in the 1980s.[51] However, the nature of the reaction was not clear until J M Tarascon and his coworkers reported the conversion reaction between transition metal oxides ... as TiO2[30] and Li4Ti5O12[17]; (2) alloying based materials, such as Si,[31] Ge,[32] Sn,[33] and their oxides/composites; (3) conversion reaction based materials, including transition metal oxides,[34]...

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Computational study of adsorption and diffusion in metal organic frameworks

... linkers in various MOFs (IRMOF-1, IRMOF-3, IRMOF-1-4NH2, IRMOF-6, IRMOF-8, IRMOF-12, IRMOF-14, IRMOF-18 and IRMOF-993) and found that the larger linkers bind more H2 molecules and addition of ... predicted in catenated and non-catenated MOFs  To study the adsorption and diffusion of a model drug (ibuprofen) in mesoporous MIL-101 and UMCM-1 The energetics and dynamics of ibuprofen in the MOFs ... (left) and volumetric (right) isotherms of CO2 116 adsorption in IRMOF1, Mg-IRMOF1, Be-IRMOF1, IRMOF1 (NH2)4, IRMOF10, IRMOF13, IRMOF14, UMCM-1, F-MOF1 and COF102 Figure 5.9 Gravimetric (left) and...

Zeolite-like metal–organic frameworks (ZMOFs):design, synthesis, and properties

... number of zeolite-like networks from hypothetical databases.89 The edge-expansion approach to zeolite-like metal–organic frameworks (ZMOFs) 3.1 ZMOFs from angular ditopic N-donor ligands: pyrimidine-, ... imidazolate ligands.100 Accordingly, half of the negatively charged imidazolate ligands were replaced by neutral ligands, giving rise to new materials, named MVLIF-1 and MVLIF-2 (MVLIF stands for mixed ... on identifying possible strategies and relevant examples of MOFs that possess periodic intra-framework organic functionality and zeolite-like topologies and properties The portrayed examples demonstrate...

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