Iron oxide/graphene oxide nanocomposite synthesis using atmospheric cold plasma.

Herein, we demonstrate the use of an atmospheric pressure plasma with a Dielectric Barrier Discharge (DBD) for the synthesis of FeO nanoparticles with a simultaneous formation of graphene oxide domains at low substrate temperature. For that, the interaction of the plasma to control good decomposition of the Fe precursor is essential and this is demonstrated by FTIR analyses. Thanks to a fine tuning of the plasma conditions, a homogeneous spatial distribution around 5 nm nanoparticles (NPs) was obtained, whereas without plasma, in the same configuration of the process, a heterogeneity regarding size and shape for the NPs was obtained.

Gold nanoparticles synthesis and immobilization by atmospheric pressure DBD plasma torch method.

Herein, we report the impact of plasma on gold nanoparticles synthesis. We used an atmospheric plasma torch fed with an aerosolized tetrachloroauric(iii) acid trihydrate (HAuCl·3HO) solution. The investigation showed that using pure ethanol as a solvent for the gold precursor enabled a better dispersion compared to a water-containing solution.

Anatase TiO deposited at low temperature by pulsing an electron cyclotron wave resonance plasma source.

Photocatalytic surfaces have the potentiality to respond to many of nowadays societal concerns such as clean H generation, CO conversion, organic pollutant removal or virus inactivation. Despite its numerous superior properties, the wide development of TiO photocatalytic surfaces suffers from important drawbacks. Hence, the high temperature usually required (> 450 °C) for the synthesis of anatase TiO is still a challenge to outreach.

Transparent anti-fogging and self-cleaning TiO/SiO thin films on polymer substrates using atmospheric plasma.

Transparent anti-fogging and self-cleaning coatings are of great interest for many applications, including solar panels, windshields and displays or lenses to be used in humid environments. In this paper, we report on the simultaneous synthesis, at atmospheric pressure, of anatase TiO nanoparticles and low-temperature, high-rate deposition of anatase TiO/SiO nanocomposite coatings. These coatings exhibit durable super-hydrophilic and photocatalytic properties.

Significance of a Noble Metal Nanolayer on the UV and Visible Light Photocatalytic Activity of Anatase TiO Thin Films Grown from a Scalable PECVD/PVD Approach.

UV and visible light photocatalytic composite Pt and Au-TiO coatings have been deposited on silicon and glass substrates at low temperature using a hybrid ECWR-PECVD/MS-PVD process. Methylene blue, stearic acid, and sulfamethoxazole were used as dye, organic, and antibiotic model pollutants, respectively, to demonstrate the efficiency of these nanocomposite coatings for water decontamination or self-cleaning surfaces applications. Raman investigations revealed the formation of anatase polymorph of TiO in all synthesized coatings with a shifting of the main vibrational mode peak to higher wavenumber in the case of Au-TiO coating, indicating an increase number of crystalline defects within this coating.