文献类型：期刊文献

英文题名：Spinel copper ferrite and zinc ferrite films synthesized via Solution Precursor Plasma Spray process for functional applications

作者：Yu, Zexin[1]; Liu, Meimei[1]; Moliere, Michel[1]; Liao, Hanlin[1]; Moussa, Hatem[2]; Schneider, Rapha?l[2]; Wang, Weize[3]

机构：[1] ICB UMR 6303, CNRS, UTBM, University de Bourgogne Franche-Comté, Belfort, 90010, France; [2] Université de Lorraine, Laboratoire Réactions et Génie des Procédés [LRGP], UMR 7274, CNRS, 1 Rue Grandville, BP 20451, Nancy Cedex, 54001, France; [3] Key Lab of Safety Science of Pressurized System, Ministry of Education, School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2018

卷号：2018-May

起止页码：627

外文期刊名：Proceedings of the International Thermal Spray Conference

收录：EI(收录号：20192907197192)

语种：英文

外文关键词：Oxide films - Plasma jets - Organic pollutants - Ultraviolet visible spectroscopy - Health risks - Light - Plasma spraying - Copper compounds - Stabilization - Zinc compounds - Ferrite - Film preparation - Copper - Photocatalytic activity - Zinc

摘要：Binary spinel-type metal oxides (AB2O4) semiconductors, including ferrites (AFe2O4), are attractive photocatalysts thanks to their excellent visible light response and good photochemical activity and stability for the photodegradation of organic pollutants. Currently, their synthesis proceeds via conventional chemical routes that follow rather tedious protocols and the final preparations consist in nano-powders, a form that is not exempt of EHS (Environment, health and safety) risks along their handling. From an industry perspective, it is desirable to dispose of an efficient and preferably simple synthesis route capable to produce photocatalytic preparations in a non-dispersible form, for instance in the form of robust films attached on solid substrates. We report herein a single-step method based on the Solution Precursor Plasma Spray (SPPS) process that enables the preparation of promisingly active ferrite-based photocatalytic films, namely CuFe2O4 and ZnFe2O4. We have investigated various types of precursor solutions, including the atomic A/Fe ratios, solvent type and solute concentration, and studied the evolution of the phase composition of the resultant CuFe2O4 and ZnFe2O4 films by XRD. The corresponding surface morphologies and energy bandgaps were also studied by SEM and UV-Vis spectroscopy, respectively. Then the photocatalytic activities of the selective ferrite films were evaluated through the degradation of aqueous solutions of the Orange II dye under different light irradiations. The results of the overall work also revealed that SPPS process represents a fast, one-step, versatile alternative compared to conventional multi-step processes, which is suitable for preparing complex composition metal oxide film-formed photocatalyst. ? 2018 ASM International? All rights reserved.