Diane Rawach

Institut National de la Recherche Scientifique | INRS · Energy, Materials and Telecommunications Research Centre

Metal nanoparticles (NP) supported on TiO2 are known to be efficient photocatalysts for solar-to-chemical energy conversion. While TiO2 decorated with copper NPs has the potential to become an attractive system, the poor oxidative stability of Cu severely limits its applicability. In this work, we demonstrate that, when Cu NPs supported on TiO2 nan...

High‐performance oxygen electrocatalysts play a key role in the widespread application of rechargeable Zn–air batteries (ZABs). Single‐atom catalysts (SACs) with maximum atom efficiency and well‐defined active sites have been recognized as promising alternatives of the present noble‐metal‐based catalysts for oxygen reduction reaction and oxygen evo...

Ammonia is not only an important platform chemical for industrial and agricultural use but is also a novel energy‐carrying molecule. The electrochemical reduction method for ambient ammonia synthesis is emerging as a promising strategy for the replacement of the current Haber–Bosch ammonia synthesis method, which consumes a large amount of energy a...

The development of highly efficient, stable, and low-cost catalysts for oxygen reduction and evolution reactions (ORR and OER, respectively) is vital for rechargeable metal–air batteries and united regenerative fuel cells. Herein, we develop a facile strategy for fabricating the heterojunction Co/Co2P nanocrystals that are confined in bamboo-like N...

With the rapid development of portable electronic products, wearable flexible energy storage devices such as flexible supercapacitors (FSCs) have attracted much attention. FSC devices possess various advantages, such as small size, flexibility and lightness, smooth operation, wide operating temperature range, and high energy density and power densi...

Rechargeable zinc‐air batteries (ZABs) are considered as one of the most promising electrochemical energy devices due to their various unique advantages. Oxygen electrocatalysis, involving the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), determines the overall performance of zinc‐air batteries. Therefore, the development of...

Developing highly efficient electrocatalysts to facilitate the sluggish cathodic oxygen reduction reaction (ORR) is a key challenge for high-performance fuel cells. Low-dimensional materials have attracted great attention recently because of their unique structure and properties. In this review, the application of zero-dimensional (0D), one‐dimensi...

We report on the synthesis of photoferroic Cr3+-doped BaTiO3 nanoparticles with nominal Cr content ranging from 2-8 mol% by a microwave-assisted hydrothermal method. The absorption properties of the doped systems are significantly enhanced due to the d-d band transition of Cr3+/4+. The structural properties of the materials are examined on the basi...

We report on the synthesis of polycrystalline Fe-doped BaTiO3 ferroelectric nanopowder that exhibits high visible light photocatalytic activity. The ferroelectric Fe-doped BaTiO3 samples with nominal Fe contents ranging from 2 to 8 at% are prepared by fast microwave-assisted hydrothermal synthesis. All the doped ferroelectrics exhibit enhanced ligh...

Ferroelectric Fe³⁺Cr³⁺co-doped BaTiO3 nanopowder has been successfully synthesized by an ultrafast microwave-assisted hydrothermal method. The results indicate that by molar adjustment of the cations, the apparent optical absorption edge of the co-doped ferroelectrics can be red-shifted in comparison to undoped BaTiO3 ferroelectric. The interfacial...

The performance of a suspect screening method to detect diverse small-molecule trace organic contaminants (TOCs) was systematically evaluated using a set of 39 model compounds. Experiments showed that ionization efficiency, ion transfer parameters and chromatography could affect the detection of TOCs. As expected, compounds with low ionization yiel...