Facile synthesis of ZnFe2O4/SnO2 composites for efficient photocatalytic degradation of methylene blue

被引：18

作者：

Guo, Longfei ^{[1
]}

Okinaka, Noriyuki ^{[2
]}

Zhang, Lihua ^{[2
]}

Watanabe, Seiichi ^{[2
]}

机构：

[1] Hokkaido Univ, Grad Sch Engn, Sapporo, Hokkaido 0608628, Japan

[2] Hokkaido Univ, Fac Engn, Sapporo, Hokkaido 0608628, Japan

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2021年 / 262卷

关键词：

Photocatalyst; Photo-fenton; ZnFe2O4; SnO2; Composite; Methylene blue; TIO2 NANOTUBE ARRAYS; ACID ORANGE 7; ORGANIC POLLUTANTS; HYDROGEN-PEROXIDE; OXYGEN VACANCIES; AQUEOUS-SOLUTION; PERFORMANCE; OXIDE; REMOVAL; FENTON;

D O I：

10.1016/j.matchemphys.2021.124273

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

ZnFe2O4/SnO2 (ZFO/SnO2) composites were fabricated via a facile solution combustion synthesis (SCS) method for methylene blue (MB) degradation. The crystallite and morphology characterizations revealed that ZFO/SnO2 composites have relatively small crystallite and particle size compared to pure ZFO. The introduction of SnO2 remarkably improved the photocatalytic performance of pure ZFO catalyst. Specifically, ZFO-SnO2 (10%) exhibited the highest photocatalytic degradation rate constant of 0.01970 min(-1) in the composites, approximately 3.08 and 2.64 times higher than that of single ZFO (0.00640 min(-1)) and SnO2 (0.00747 min(-1)), respectively. The band alignment analysis showed that the improvement of photocatalytic activity was due to the improved charges separation efficiency in the ZFO/SnO2 composite. ZFO-SnO2 (10%) with H2O2 showed the highest photo-Fenton degradation rate constant of 0.05301 min(-1) and could remove 95.2% of MB within 60 min under irradiation.

引用

页数：7

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