DSM : Thesis SL-DSM-14-0271

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Research field

Physical chemistry and electrochemistry / Solid state physics, chemistry and nanosciences
Ultra-divided matter, Physical sciences for materials / Solid state physics, chemistry and nanosciences

Title

New photoactives materials for energy applications: hybrides g-CN/metallic ions

Abstract

How can hydrogen be generated at low cost in large quantities?



Graphitic carbon nitride (g-CN) appears to have all the properties necessary for solar-powered hydrogen production. It is non-toxic and can be synthesised in large quantities from cheap, abundant reagents. g-CN is an organic semi-conductor with a structure close to that of graphite, but with every second carbon atom replaced by nitrogen, creating a novel structure. In direct contact with water and light energy this photocatalyst harnesses solar energy to generate chemical energy producing hydrogen. But, as it is a semi-conductor, this material is also of interest in the development of photovoltaic panels or for micro-electronics applications. For the moment, its development is limited only by the difficulties surrounding implementing its use, and the absence of doping methods. These are essential for the semi-conductor material to be effectively usable. This PhD topic will use novel procedures (patents currently being deposited) which were developed in our laboratory to shape the compound so as to chemically dope g-CN with transition metal ions and assess its electronic and photocatalytic properties. This thesis will be funded by a ANR project. In addition to trying to respond to the major energy challenges faced by modern society, this topic is at the boundaries between several disciplines including chemistry and physics, and will be a great learning opportunity. Although this is a basic research topic, one of the Commissariat à l'Engergie Atomique's strengths is that it also houses large technological research laboratories. Thus, if the materials synthesised showed interesting properties it is quite possible that a prototype could be made. In addition, Grenoble is a particularly stimulating setting as it is internationally renowned in the nanoscience, nanotechnology and renewable energy fields (Minalogic, Minatec and other centres of excellence).

Location

Institut nanosciences et cryogénie
Service de Chimie Inorganique et Biologique
Laboratoire de Reconnaissance Ionique et Chimie de Coordination
Centre : Grenoble
Starting date : 01/10/2014

Contact person

Lionel DUBOIS
CEA / DSM/INAC/SCIB/RICC
17, rue des martyrs
Phone : 04 38 78 92 57

University / Graduate School

Grenoble I (UJF)
Chimie et Sciences du Vivant (EDCSV) - Grenoble I -

Thesis supervisor

Serge GAMBARELLI
CEA / DSM/INAC/SCIB/LRM
CEA/Grenoble


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