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Mesoporous material structure and pore template synthesis and its biological and battery

Author: FanJie
Tutor: ZhaoDongYuan
School: Fudan University
Course: Inorganic Chemistry
Keywords: Mesoporous Template Silica Biological fixation Biocatalysis Lithium ion battery Drug Delivery
CLC: TB383
Type: PhD thesis
Year: 2004
Downloads: 1599
Quote: 4
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Abstract

Porous material due to interaction with atoms, molecules and ions in the surface and bulk phase, in scientific research and technological applications have attracted a great deal of interest. Since 1992, Mobil invented the supramolecular template synthesis of mesoporous silica molecular sieves M41S years, more and more researchers synthesized a supramolecular template with different compositions, new pore structure and with the special nature of mesoporous materials. To a certain extent, scientists have been able to microscopic, mesoscopic and macroscopic scales of mesoporous materials control synthesis, and reveal the relationship between the material structure their nature. But on the other hand should see, mesoporous materials have been applied to many areas in the strict sense, is currently a major practical commercial applications has not yet appeared. Explore new applications of mesoporous materials will be the focus of this field of research. This thesis is divided into two parts: the first part of the \The second part of the concept of the \In each section, the inspection of the performance of the synthesis of mesoporous the (mesoscopic structures) materials, hoping to develop the potential applications of the materials for enzyme immobilization, enzyme catalysis, drug delivery, and lithium-ion storage. \In the second chapter, we take advantage of the egg white protein synthesis as a template macroporous inorganic oxide (SiLO ₂ and the TiO ₂), it Fudan University Ph.D. thesis summary of their The pore size can be 30 to 400 nm by adding the surface active agent in regulation. Chapter III, containing short-chain alkyl and long hydrophilic segment of non-ionic surfactant Brij35 in (C 12E field 3) as a template, aperture synthesis through the secondary hydrolysis method for a wall thickness of 2.5 nm to 2.6 the nm dimensional hexagonal structure Never cafe m) mesoporous silica molecular sieve. The mesoporous zeolite obtained compared to the general synthetic methods, the new method resulting product shows the higher the hydrothermal stability. In order to overcome the SBA a clever one-dimensional pore macromolecular transmission constraints, we have formed in the SBA a clever mesoscopic structures early infiltration of TMB molecules, and high temperature (100 of 140 \the micelle volume expansion increases, bursting microporous inorganic wall original area, a huge tunnel (2 ^{nm) disordered mesoporous successful preparation of a three-dimensional macroporous (22 nm ) SBA (Chapter IV), a clever material. the average mesoscopic structures original SBA a clever, like a two-dimensional hexagonal symmetry, corresponding to the space group P Stone feet m Chapter A novel macroporous block copolymer as template (12.3 nm) cubic (Fm one m) structure of the cage-like mesoporous molecular sieves (named FDu 12) by nitrogen adsorption results the analysis FDu a 12 the window size 9 nm regulation, inverting the gold nanoparticles by FDU-12 system observed pore mapping also confirmed that the adsorption results. cage referral mesoporous molecular sieves window size increases, not only conducive to enzyme molecules into the pore internal, but also conducive to the synthesis of highly ordered structure of the face-centered cubic (fcc) inverting mesoporous carbon molecular sieve synthesized In this chapter, we are still at low temperatures, a large unit cell (44 nm) highly ordered face-centered cubic (fcc) mesoporous molecular sieves UL 12 in Chapter 6, we introduces the large aperture mesoporous molecular sieve some applications in enzyme immobilization and enzymatic l) we found that the macro-structure on an FDU a lot of enzymes in mesoporous materials fixed behavior. rod SBA-15 materials enzyme fixed amount can be as high as 533m to stay g, about ordinary mesoporous material 7 times and reach 200m stay g adsorption amount only need less than 10 min.) trypsin in a one-dimensional mesoporous molecular sieve SBA is a clever mesoscopic limit the channels can greatly improve the efficiency of enzymatic hydrolysis of the protein molecules at the same time, we also examined in detail the mesoporous materials the relationship between the structure of the protease solution efficiency. 3) a new type of three-dimensional large pore size mesoporous molecular sieves to FDU 12 of three-dimensional ordered cage-like mesoporous pore conducive to achieve rapid and efficient enzymatic hydrolysis of the protein in mesoscopic confined space within low abundance of skin segment detection and protein fixed to the many advantages of the above findings will help bionic nanosystems designed at the molecular level, and further demonstrate the characteristics of the the rules ordered mesoporous space, but also for the biomolecule new reactor design provides a new idea. the supramolecular template assembly is a very effective method of synthesis mesoscopic structures. inorganic skeleton formation process is difficult to control, this method is often difficult to work Chapters VII and VIII we mesoporous carbon molecular sieve as \calcium phosphate bioceramics by Fudan University Ph.D. thesis Abstract nanometer space of Ca and P precursor \The nanopore as a medicine storage material having a calcium phosphate nano-pore material (1770 lam g / g) the general commercial storage capacity of the non-porous calcium phosphate (100 lam g / g) of 17 times. Chapter VIII We introduce an ordered nanostructure tin-based oxides / carbon composite materials (orderednanostruetured the tin based oxides / earbon eomposites, denoted as oNTC) Synthesis their hang-ion battery anode material the ONTC synthesis by tin based oxide and phosphorus precursor \The nano-carbon skeleton of the three-dimensional ordered retained the aggregation between the limit Keng embedded lead to change in the volume and Li a Sn alloy particles. Compared to the general tin base oxide nano-materials, such novel nano-structured composite material as a hang-ion battery, the negative electrode shows more excellent cycle performance.}

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