Clotilde Boulanger

Synthesis, properties and performances of electrodeposited bismuth telluride films

Bismuth telluride alloy films of uniform thickness have been successfully prepared by electrodeposition from a solution containing Bi3+ and HTeO2+ ions in 1 mol dm–3 nitric acid (pH = 0) on stainless steel. The electrodeposited films are monophasic and exhibit a polycrystalline structure (Rm). The film composition is dependent on the electrolyte composition and the current density. The electrical properties of the electrodeposited samples have been determined. The obtained films are n-type semiconductors with high carrier concentration.

Psychotria douarrei and Geissois pruinosa, novel resources for the plant- based catalytic chemistry

Psychotria douarrei and Geissois pruinosa are known as a hypernickelophore plants. The study of their chemical characteristics was revisited to demonstrate a novel potential of this natural resource for Green Chemistry. P. douarrei showed a unique composition, which led to a novel concept of plant-based catalytic chemistry. The supported Biginelli reaction illustrated an interest of this concept for green organic synthesis.