Facile synthesis of magnetically separable CoFe2O4/Ag2O/Ag2CO3 nanoheterostructures with high photocatalytic performance under visible light and enhanced stability against photodegradation

被引：15

作者：

Sutka, Andris ^{[1
,2
]}

Doebelin, Nicola ^{[3
]}

Joost, Urmas ^{[2
]}

Smits, Krisjanis ^{[4
]}

Kisand, Vambola ^{[2
]}

Maiorov, Mihael ^{[5
]}

Kooser, Kuno ^{[2
,6
]}

Kook, Mati ^{[2
]}

Duarte, Roberto Felix ^{[7
]}

Kaambre, Tanel ^{[2
]}

机构：

[1] Riga Tech Univ, Res Lab Funct Mat Technol, Fac Mat Sci & Appl Chem, P Valdena 3-7, LV-1048 Riga, Latvia

[2] Univ Tartu, Inst Phys, W Ostwaldi Str 1, EE-50411 Tartu, Estonia

[3] RMS Fdn, Bischmattstr 12, CH-2544 Bettlach, Switzerland

[4] Univ Latvia, Inst Solid State Phys, Kengaraga 8, LV-1063 Riga, Latvia

[5] Univ Latvia, Inst Phys, Miera 32, LV-2169 Salaspils, Latvia

[6] Univ Turku, Dept Phys & Astron, FIN-20014 Turku, Finland

[7] Helmholz Zentrum Berlin Mat & Energie GmbH, D-14109 Berlin, Germany

来源：

JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING | 2017年 / 5卷 / 04期

关键词：

Silver oxide; Silver carbonate; Photocatalytic; Nanoheterostructures; Magnetic; X-RAY PHOTOELECTRON; DIFFUSE-REFLECTANCE MEASUREMENTS; RECYCLABLE PHOTOCATALYST; WATER-TREATMENT; COBALT; NANOCOMPOSITE; EFFICIENCY; TIO2; NANOPARTICLES; DEGRADATION;

D O I：

10.1016/j.jece.2017.07.009

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

We have developed magnetically separable and reasonably stable visible light active photocatalysts containing CoFe2O4 and mixture of Ag2O/Ag2CO3 nanoheterostructures. Obtained ternary nanoheterostructures outperform previously reported magnetically separable visible light photocatalysts, showing one of the highest visible light photocatalytic dye degradation activities in water by a magnetically separable photocatalyst. Photocatalytically active part is Ag2O/Ag2CO3 whereas the CoFe2O4 mainly has stabilizing and magnetic separation functions. The Ag2CO3 phase junction on Ag2O nanoparticle surface were obtained by straightforward phase transformation from silver oxide to silver carbonate in air due to ambient CO2. The phase transformation was followed using X-ray diffraction (XRD), and hard X-ray photoelectron spectroscopy (HAXPES) measurements.

引用

页码：3455 / 3462

页数：8

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