Two-in-one ultraviolet persistent luminescent catalyst suitable for high concentration photodegradation
作者: Juanjuan ZhouJian HuangYan XiaHuase OuZhanjun Li
作者单位: 1Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou 510632, Guangdong, China
2Zhejiang Collaborative Innovation Center for High Value Utilization of Byproducts from Ethylene Project, Ningbo Polytechnic, Ningbo 315800, Zhejiang, China
刊名: Science of the Total Environment, 2020, Vol.699
来源数据库: Elsevier Journal
DOI: 10.1016/j.scitotenv.2019.134342
关键词: PhotodegradationPhosphorMultifunctionCharge separationLong lifetime
英文摘要: Abstract(#br)Heterogeneous photodegradation is limited at high catalyst concentrations because of the scattering and reflection of the particulate catalysts. To further improve the efficiency of photodegradation and the use of space in photoreactors at high catalyst concentrations, Ga 3+ was doped into Zn 2 SiO 4 to introduce positively charged traps to capture photo-generated electrons and, thus, achieve long lifetime charge separation. In this strategy, Zn 2 SiO 4 :Ga 3+ was obtained as a two-in-one (persistent luminescence and catalysis) persistent photocatalyst for the efficient photodegradation of a household insecticide, permethrin. Zn 2 SiO 4 :Ga 3+ possesses an UV afterglow property. Zn 2 SiO 4 :Ga 3+ can store UV irradiation energy as long lifetime separated electron/hole pairs...
全文获取路径: Elsevier  (合作)
影响因子:3.258 (2012)

  • catalyst 催化剂
  • Phosphor 晓星
  • ultraviolet 紫外线的
  • lifetime 寿命
  • concentration 浓度
  • luminescent 发光的
  • suitable 合适的
  • separation 分选
  • persistent 持续的