24小时热门版块排行榜

返回列表

【有奖交流】积极回复本帖子，参与交流，就有机会分得作者天要晴的 2 个金币，回帖就立即获得 1 个金币，每人有 1 次机会

天要晴

铜虫 (小有名气)

应助: 0 (幼儿园)
金币: 1391.2
帖子: 98
在线: 112.8小时
虫号: 2923268

[交流] 法国图卢兹第三大学IMRCP课题组拟招收2023年CSC国家公派博士生

法国图卢兹第三大学IMRCP课题组Jean-Daniel Marty教授（与Florence BENOIT-MARQUIE 副教授共同指导）拟招收2023年CSC国家公派博士生。

具体内容如下：
课题名称：Hybrid nanomaterials: synthesis and applications in advanced oxidation process

摘要 : The propose of this subject is to design nanoparticles to be used as catalyst in Advanced Oxidation Process. We plan to study the formation and characterization of novel catalyst based on two different families of nanoobjects based on irons species: Hybrid Poly Ions Complexes (HPICs) based on the complexation of iron ions with double hydrophylic copolymers and Prussian Blue Nanoparticles. In both cases the careful choice of the organic corona will enable to control the colloidal stability of the nanoobjects and eventually to tune the interactions of the different systems compounds of interest.

课题简介：The Fenton reaction consists in decomposing hydrogen peroxide (H2O2) with metal salts in order to form radical species such as hydroxyl radicals HO •. These radicals are very oxidizing and can be the agents of oxidation of various pollutants. This Fenton reaction can also be photochemically activated, called Photo-Fenton. A major disadvantage of the Fenton and photo-Fenton reactions is that they are in the homogeneous phase and that, following the degradation of the pollutant; it is very difficult to separate from the depolluted solution the metal complexes which served to the production of radicals. Therefore, there is still a great need for catalysts easy to prepare, highly efficient but easily recoverable at the end of reaction. For such a purpose nanocatalyst can be of huge interest as they combine the interest of both homogeneous and heterogeneous catalysts.
To obtain such nanocatalysts the formation of nanoparticles or the modification of preformed nanoparticles with ions of interest by different chemical or physical pathways (nanoprecipitation, sol-gel chemistry…) has been extensively described in literature. TiO2 nanocatalysts have been therefore extensively studied in literature. An alternative to these strategies is to induce the formation of aggregates (also called coacervates or hybrid polyion complexes, HPICs) between metal ions and block polymers bearing simple functional groups.
Recently, HPICs obtained from the addition of simple charged polyvalent metal ions (e.g. Al3+, La3+, Gd3+, Fe3+ …) to a solution of double hydrophilic block copolymers with generic functions (i.e. that are not specifically designed to complex a chosen ions) have gained particular interest.

目标：In this proposal, we plan to use HPICs in order to study the formation and characterization of novel catalyst based on different families of nanoobjects :
1)       HPICs nanostructure based on the mixture of iron with other families of ions
2)       Prussian Blue Nanoparticles with a core or a core-shell structures
In both cases the careful choice of the organic corona will enable to tune the interactions of the different systems compounds of interest.

课题要求：
The proposed work will requires the following task to be fulfilled :
-       Task 1: studying the formation of HPICs based on iron (and other ions of interest) and characterize the formed objects (size, shape, density of ions within HPICS….). This will be studied thanks to scattering techniques (light, SAXS, SANS), NMR, Flow Field Flow Fractionation….
-       Task 2: Using these HPICs as template to obtain Prussian blue nanoparticles with controlled shape and composition to act as an additional family of heterogeneous photocatalyst.Studying the colloidal stability of those HPICS under the condition of catalysis
-       Task 3: Evaluating the catalytic properties of these two families of catalysts in advanced oxidation process on different model reaction and optimizing the recovery of such catalysts
-       Task 4: extending the scope of these nanoobjects as multicatalyst systems by synthesizing nanoobjects with additional catalytical properties i
n addition to AOP abilities by incorporation of different ions within the same nanoobject.

导师联系方式：
Jean-Daniel MARTY： jean-daniel.marty@univ-tlse3.fr
Florence BENOIT-MARQUIE：florence.benoit-marquie@univ-tlse3.fr

由于申请时间紧急，请感兴趣的同学尽快联系。

回复此楼