RESEARCH TOPIC FOR THE PARISTECH/CSC PHD PROGRAM

Field: Chemistry, Physical Chemistry and Chemical Engineering

Subfield: (Applied Physics, Chemistry, Mathematics, Mech. Eng.…)

Title: Synthesis of innovative nanomaterials for hydrogen production by water splitting process and the study of its efficiency by the rotating Ring Disk Electrode method.

ParisTech School: Chimie ParisTech | PSL
Advisor(s) Name: Abdelhafed Taleb
Advisor(s) Email: abdelhafed.taleb@chimieparistech.psl.eu
Research group/Lab: IRCP-UMR 8247
Lab location:  Chimie Paris Tech
(Lab/Advisor website): https://www.ircp.cnrs.fr/
Short description of possible research topics for a PhD:Hydrogen energy is considered by the scientific community as one of the potential clean energy sources to replace the pollutant fossil energy. Therefore, the hydrogen production is becoming à hot topic in material science. The present PhD proposal will focus on the synthesis and electrochemical characterization of innovative semiconductor and transition metal materials (chalcogenide, oxide, mixed) for high efficiency of water splitting. The rotating Ring Disk Electrode (RRDE) method will be used to study the oxygen vs. chlorine evolution (OER vs. CER) in alkaline media. The objective of this study is to explore the efficiency of different materials for the competitiveness of both oxygen and chlorine evolution and the influence the transition metal catalysts. The optimized electrode materials will be integrated into new generation of electrolyzes for the electrochemical decomposition of water in the dark or under illumination which mimic the artificial photosynthesis (photoelectrochemical water splitting). This research aims to the development of low cost and active electrocatalysts for hydrogen fuel production efficiency. This work will be achieved in collaboration with Pr. Ahmed Ennaoui president of the scientific council of IRESEN (the Moroccan Research Institute for Solar Energy and New Energies)
Required background of the student: Solid State chemist, electrochemist, physical chemist
A list of 5 (max.) representative publications of the group: (Related to the research topic)
1.        A. Ennaoui, and H. Tributsch, Journal of Electroanalytical Chemistry 204 (1986) 185  
2.        A. Ennaoui, and H. Tributsch , Solar Energy Materials and Solar Cells, 29 (1993) 289-370
3.        A. Taleb, F. Mesguich, X. Yanpeng, C. Colbeau-Justin P. Dubot, Solar Energy Materials and Solar Cells, 148, 52, (2016).
4.        S. Mehraz, P. Konsong, A. Taleb, N. Dokhane, L. Sikong, Solar Energy Materials and Solar Cells, 189 (2019) 254-262.
5.        H. Ennaceri, D. Erfurt, L. Wang, T. Köhler, A. Khaldoun, A. El Kenz, A. Benyoussef, A. Ennaoui, A. Taleb, Solar Energy Materials and Solar Cells, 201 (2019) 110058.



RESEARCH TOPIC FOR THE PARISTECH/CSC PHD PROGRAM

Field: Chemistry, Physical Chemistry and Chemical Engineering

Title: Design of innovative hybride nanomaterials for gas nanosensing applications with environmental interest.

ParisTech School: Chimie ParisTech | PSL
Advisor(s) Name: Abdelhafed Taleb
Advisor(s) Email: abdelhafed.taleb@chimieparistech.psl.eu
Research group/Lab: IRCP-UMR 8247
Lab location:  Chimie Paris Tech
(Lab/Advisor website): https://www.ircp.cnrs.fr/

Short description of possible research topics for a PhD:
The gas pollutants released in the environment by different human activities represent a serious threat to the human health and earth ecosystem. This requires the development of safety measures, sanitary rules, and hygiene standards implementation. To prevent the risks associated with the gas pollutions, an important task is the development of detection and quantification tools of gas pollutants in the environment such as sensors. The main required characteristics for modern sensor detection systems are, low detection limit, selectivity, stability and cyclability. Sensors based on semiconductor nanomaterials have been emerged as a mature technology to face these challenges successfully.
Within this PhD proposal we are planning to develop gas sensors based on innovative hybrid nanomaterials, with optimized properties to meet the requirements of performing gas sensors. The semiconductor nanomaterials such as TiO2, will be prepared and its design will be optimized in terms of better connectivity, higher specific surface and stability. A particular attention will be payed to the implementation of the prepared nanomaterial in sensors devices, of cost-effective technology a scalable production.
This work will be achieved in collaboration with Pr. Mustapha Jouiad (LPMC, University of Picardie Jules Verne, Amiens France).

Required background of the student: Solid State chemist, physical chemist
A list of 5 (max.) representative publications of the group: (Related to the research topic)
1.        A. Taleb, F. Mesguich, X. Yanpeng, C. Colbeau-Justin P. Dubot, Solar Energy Materials and Solar Cells, 148, 52, (2016).
2.        S. Mehraz, P. Konsong, A. Taleb, N. Dokhane, L. Sikong, Solar Energy Materials and Solar Cells, 189 (2019) 254-262.
3.        H. Ennaceri, D. Erfurt, L. Wang, T. Köhler, A. Khaldoun, A. El Kenz, A. Benyoussef, A. Ennaoui, A. Taleb, Solar Energy Materials and Solar Cells, 201 (2019) 110058.


RESEARCH TOPIC FOR THE PARISTECH/CSC PHD PROGRAM

Field: Chemistry, Physical Chemistry and Chemical Engineering

Subfield:

Title: Design of new electrode materials based on nanoparticles for electrochemical nanosensing applications with environmental interest.

ParisTech School: Chimie ParisTech | PSL
Advisor(s) Name: Abdelhafed Taleb
Advisor(s) Email: abdelhafed.taleb@chimieparistech.psl.eu
Research group/Lab: IRCP-UMR 8247
Lab location:  Chimie Paris Tech
(Lab/Advisor website): https://www.ircp.cnrs.fr/

Short description of possible research topics for a PhD: In the field of material science, one of the main question is, does it make sense to define desired properties first and then design the material with the architecture that match these properties. The actual research topic of our group is within this concern, and it consist of new material design developments that emerge new properties and functions. Actually, one of the main research topics we are developing is dealing with the enhancement of detection limit and selectivity of sensing, based on nanostructure through a new design of metallic nanoparticles modified electrode. Our design strategies combine nanomaterials and different deposition methods to prepare desired material structure of required properties.
Over the years, our group has acquired expertise in nanoparticle synthesis, surface modification and deposition of thin film based on nanoparticles. Our goal in this PhD proposal is to develop hierarchical electrode material based on metallic nanoparticles. We expect that our results could be helpful in understanding the electrochemical properties of hierarchical electrode and may have potential applications in sensing. Additional, the performance of prepared electrode will be optimized.

Required background of the student: Electrochemistry, ideally with some knowledge of surface modification and/or nanomaterial synthesis.

A list of 5 (max.) representative publications of the group: (Related to the research topic)
1.        A. Taleb, X. Yanpeng, P. Dubot, J. Electroanal. Chem. 693 (2013) 60.
2.        A. Taleb, X. Yanpeng, P. Dubot, Applied surface science, 420 (2017) 110-117.
3.        Sana Falah, Xue Yanpeng, Abdelhafed Taleb, Mohamed Beji, Electrochemica Acta, 292(1) (2018) 594-601.
4.        Z. Ait-Touchente, S. Falah, E. Scavetta, M. M. Chehimi, R. Touzani, D. Tonelli, A. Taleb, Molecules 25 (2020) 3903.

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