文献类型：期刊文献

英文题名：Formation of Cu2o solid solution via high-frequency electromagnetic field-assisted ball milling: The reaction mechanism

作者：Zhang, Yingzhe Chen, Yudao Li, Juan Li, Wei Chen, Ding Qin, Qingdong

第一作者：张英哲

通信作者：Zhang, Yingzhe|[14440bcc01768a0cdbb37]张英哲;

机构：[1] College of Materials and Metallurgical Engineering, Guizhou Institute of Technology, Guiyang, 550003, China; [2] School of Energy and Power Engineering, Changsha University of Science and Technology, Changsha, 410014, China; [3] State Key Laboratory of Advanced Design and Manufacturing for Vehicle Bodies, College of Mechanical and Vehicle Engineering, Hunan University, Changsha, 410082, China

第一机构：贵州理工学院材料与冶金工程学院

通信机构：College of Materials and Metallurgical Engineering, Guizhou Institute of Technology, Guiyang, 550003, China|贵州理工学院材料与冶金工程学院;贵州理工学院;

年份：2020

卷号：13

期号：3

外文期刊名：Materials

收录：EI(收录号：20200808209223);Scopus(收录号：2-s2.0-85079636305)

语种：英文

外文关键词：Azo dyes - Biodegradation - Catalyst activity - Copper oxides - Crystals - Electric fields - Electromagnetic fields - Electromagnetic waves - Mechanical alloying - Milling (machining) - Organic pollutants - Oxide minerals - Rhodamine B - Solid solutions - Water pollution - Water treatment

摘要：The contamination of environmental water with organic pollutants poses significant challenges for society, and much effort has been directed toward the development of catalysts and methods that can decompose these pollutants. While effort has been directed toward the fabrication of Cu2O catalysts by ball milling, this technique can involve long preparation times and provide low yields. In this study, we synthesized a solid solution of Cu2O in 22 h by high-frequency electric-field-assisted ball milling below 40 ffiC in only one step under aqueous conditions. We investigated the catalytic activities of the produced Cu2O solid solution in the microwave-assisted degradation of dyes, namely rhodamine B, phenol red and methyl orange. The prepared Cu2O solid solution was very catalytically active and completely degraded the above-mentioned dyes within 2 min. The one-dimensional diffusion model and the phase boundary (planar) model were found to describe the kinetics well. Synergism between ball milling and the high-frequency electromagnetic field plays a key role in the preparation of Cu2O solid solution nanoparticles. Ball milling facilitates the relaxation of the Cu2O lattice and high-frequency electromagnetic radiation accelerates the diffusion of Fe atoms into the Cu2O crystal along the (111) crystal plane, quickly leading to the formation of a Cu2O solid solution. ? 2020 by the authors.