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Reference : UMR7515-SILMAR-006
Workplace : STRASBOURG
Date of publication : Friday, July 17, 2020
Type of Contract : FTC Scientist
Contract Period : 24 months
Expected date of employment : 1 October 2020
Proportion of work : Full time
Remuneration : Starting from 2100 € net/month according to experience
Desired level of education : PhD
Experience required : 1 to 4 years
The aim of the postdoctoral project is to synthesize hybrid heterojunctions and plasmonic composites under the framework of the development of advanced composites towards the photocatalytic CO2 reduction to ethylene (C2H4). The general objective is to reach 90% photon absorption and 80% chemical conversion into products, i.e. an overall photon to product efficiency of 70%.
The rational design strategy for optimization of the intimate contact between the different components of the composite photocatalysts consists in two approaches. On on hand, organic and inorganic semiconductors (SCs), medium band gap mostly, will be coupled in staggered heterojunction by using different synthetic methods (hydrothermal, sol-gel, impregnation, etc.) to allow a Z-scheme formation. On the other hand, monometallic and bimetallic nanoparticles (NPs) deposition onto previous optimized heterojunctions will be used to form Schottky junctions by using plasmonic metals to improve light harvesting yields of the system.
Selected performing semiconductors and metallic nanoparticles will allow creating a series of new composites to be evaluated towards photocatalytic CO2 reduction in gas phase, although liquid phase can be considered to be performed by partners of the project. Parametric studies to find optimized ratios of SCs and metal NPs loadings will take place. In order to understand the physico- chemical properties, a competitive state-of-the-art core is available at ICPEES Institute comprising characterization techniques to obtain morphological (HRTEM and SEM), structural (XRD), optical (UV-vis spectroscopy), electronic (UPS and EDX), surface (XPS, BET, zeta potential), thermal (TGA), chemical (FT-NIR, Raman, EPR spectroscopies and ICP-AES). Also, complementary charge carrier dynamics analysis by employing TRMC are expected at University of Paris Saclay. The objective is to bring mechanistic insights of the most performing composites and to correlate structure-activity aspects.
• PhD degree in materials chemistry and physics or physical chemistry;
• Strong experimental and theoretical skills;
• Excellent analytical and conceptual ability;
• Ability to work independently and collectively in a multidisciplinary
• Experience in composite synthesis is required;
• Advanced scientific writing and communication skills are required;
• Excellent proficiency in English is required;
• Basic French is a plus;
• The postdoctoral research starts 1st May 2020.
Due to the recently awarded EU H2020 project "SUN2CHEM, Converting Sunlight to storable chemical energy" a postdoctoral position is available at ICPEES in direct collaboration with world leading groups.
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