光催化
介质阻挡放电
激进的
催化作用
油酸
油胺
甲基橙
化学
X射线光电子能谱
电子转移
核化学
溶剂
氧气
光化学
化学工程
材料科学
有机化学
纳米技术
纳米晶
电极
物理化学
工程类
生物化学
作者
Liang Huang,Xiaowen Kong,Kanglu Chang,Xumei Tao,Ying Wang,Zhixin Yu
标识
DOI:10.1007/s43630-022-00308-x
摘要
Ce2(MoO4)3 was prepared using dielectric barrier discharge (DBD) plasma method, co-precipitation method and hydrothermal method, respectively, with water/ethanol (W/O) as solvent, oleylamine (OAm) and oleic acid (OAc) as additives. Preparation method showed significant influence on the morphological and structural properties, as well as photocatalytic performance. Ce2(MoO4)3 synthesized with DBD plasma (MO-P) was mainly flowerlike nanosheets, which were beneficial to promoting electron transfer and providing more space for catalytic activity. Also, MO-P samples exhibited more oxygen vacancies, which were conducive to the photocatalytic performance. What's more, MO-P showed lower PL intensity and narrow energy gap, which implied a slow photoelectron-hole pair recombination rate and an increased electron transfer rate. The degradation rate of methyl orange (50 mg/L) could achieve 98% within 12 min with 0.5 g/L MO-P. Hydroxyl radicals (·OH) and superoxide radicals (·O2-) played a major effect. Plasma synthesis method exhibited potential application prospect in photocatalysts preparation.
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