Afterglow photocatalysis of Ag3PO4 through different afterglow coatings and photocatalysis mechanism

作者：Li, Fengfeng; Li, Zhihong^*; Cai, Yongfeng; Zhang, Mingxi; Shen, Yi; Wang, Wei

来源：Materials Letters, 2017, 208: 111-114.

DOI：10.1016/j.matlet.2017.04.106

• Ag3PO4
• Afterglow coating
• Photocatalysis
• Mechanism

We demonstrate a novel afterglow photocatalytic system consisting of Ag3PO4 and afterglow coating. The afterglow coating include three different coating materials, respectively: (i) Sr2MgSi2O7: 0.004Eu(2+), 0.06Dy(3+) (SMSOED); (ii) Sr4Al14O25: 0.04Eu(2+), 0.04Dy(3+), 0.12Er(3+) (SAOEDE); and (iii) SrAl2O4: 0.004Eu(2+), 0.012Dy(3+) (SAOED). The blue (peak wavelength: 467 nm from SMSOED coating) and blue-green (peak wavelength: 485 nm from the SAOEDE coating) afterglows effectively promote the degradation of rhodamine B (RhB) with Ag3PO4 in dark environments. The afterglow photocatalytic effect follows the trend: SMSOED coating > SAOEDE coating > SAOED coating. A possible afterglow photocatalytic mechanism was discussed. This system of Ag3PO4/afterglow coating could be applied for all-weather photocatalytic applications.

• 出版日期2017-12-1
• 单位中国科学技术大学; 天津大学; 中南大学