Facile synthesis of AgBr@ZIF-8 hybrid photocatalysts for degradation of Rhodamine B

被引：17

作者：

Chen, Yongmin ^{[1
]}

Pu, Shulan ^{[1
]}

Wang, Dongying ^{[1
]}

Zhang, Yongchao ^{[1
]}

Wan, Guojiang ^{[2
]}

Zhao, Qiang ^{[3
]}

Sun, Yan ^{[1
]}

机构：

[1] Chengdu Univ, Sch Mech Engn, Chengdu 610106, Peoples R China

[2] Southwest Jiaotong Univ, Sch Mat Sci & Engn, Chengdu 611756, Peoples R China

[3] Sichuan Univ, Sch Chem Engn, Chengdu 610065, Peoples R China

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2023年 / 321卷

关键词：

ZIF-8; AgBr; Photocatalysis; Nanocomposites; Heterojunction; HIGHLY EFFICIENT PHOTOCATALYST; PERFORMANCE; ZIF-8;

D O I：

10.1016/j.jssc.2023.123857

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Zeolitic imidazolate framework-8 (ZIF-8) was coupled with AgBr using a facile deposition-precipitation method to synthesize AgBr@ZIF-8 composites. The photocatalytic activity of prepared photocatalysts was evaluated by the degradation of Rhodamine B (RhB). As expected, the photocatalytic activity of the AgBr@ZIF-8 photocatalysts was superior to that of ZIF-8 and AgBr. Among the AgBr@ZIF-8 photocatalysts, AgBr@ZIF-8 with a ZIF-8 loading of 5 wt% exhibited the highest photocatalytic efficiency of 99.5 % within 15 min. The remarkable photocatalytic activity of the AgBr@ZIF-8 composites was attributed to the heterojunction between ZIF-8 and AgBr, which reduced the recombination rate of electron-hole pairs, thereby enhancing the photocatalytic efficiency of the catalysts. According to the trapping experiment, superoxide radicals (center dot O2-) and holes (h+) were certified as the main species in the efficient removal of RhB.

引用

页数：7