文献类型：期刊文献

英文题名：Development of photocatalytically active heterostructured MnO/ZnO and CuO/ZnO films via solution precursor plasma spray process

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

机构：[1] ICB-LERMPS UMR 6303, CNRS, site de UTBM, Université 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：2019

卷号：371

起止页码：107

外文期刊名：Surface and Coatings Technology

收录：EI(收录号：20191106620933)

语种：英文

外文关键词：Metals - Oxide films - Citrus fruits - Degradation - Film preparation - Organic pollutants - Morphology - Surface plasmon resonance - Manganese oxide - Molar ratio - Plasma jets - Light - Microstructure - Nanorods - Copper oxides - Plasma spraying

摘要：Heterostructured ZnO photocatalysts for the degradation of organic pollutant are mainly synthesized by conventional chemical methods, suffering from long duration, multi-steps, and post-treatment of the powder-formed catalysts after usage. In this paper, Solution Precursor Plasma Spray (SPPS) process is demonstrated to be a fast and efficient method for the one-step preparation of MnO/ZnO and CuO/ZnO heterostructured films for photocatalytic applications. The ratios between MnO or CuO and ZnO materials in the films were easily adjusted by varying the molar ratio of Mn(OAc)2 or Cu(OAc)2 relative to Zn(OAc)2 during the SPPS synthesis. To optimize the microstructure of selected CuO/ZnO films, two alternative spraying patterns were also developed. The modified films (Cu20-ZnO-A and Cu20-ZnO-B) were partly composed of nanorods (NRs) instead of conventional irregular particles. The MnO/ZnO and CuO/ZnO films exhibit narrower bandgap than pure ZnO films. The photocatalytic performances of the ZnO based films were evaluated for the degradation of the Orange II dye. Cu20-ZnO and Cu20-ZnO-B films exhibit the highest degradation efficiency under UV light and visible light, respectively. For example, the SPPS deposited Cu20/ZnO films could almost remove 90% of Orange II within 3 h of UV light irradiation. Moreover, this study not only reveals that SPPS is of high potential for the deposition of heterostructured metal oxide films in rapid one-step, but also points out an efficient spraying strategy for adjusting the nanostructured morphologies in these films. ? 2019 Elsevier B.V.