Synthesis of Pb9(PO4)6/Ag3PO4 Composite Photocatalysts with Enhanced Visible Light Photocatalytic Activity

被引：4

作者：

Guo, Caiping ^{[1
,2
]}

Song, Limin ^{[1
,2
]}

Zhang, Shujuan ^{[3
]}

机构：

[1] Tianjin Polytech Univ, Coll Environm & Chem Engn, Tianjin, Peoples R China

[2] Tianjin Polytech Univ, State Key Lab Hollow Fiber Membrane Mat & Membran, Tianjin, Peoples R China

[3] Tianjin Univ Sci & Technol, Coll Sci, Tianjin, Peoples R China

来源：

PHOTOCHEMISTRY AND PHOTOBIOLOGY | 2018年 / 94卷 / 02期

关键词：

DEGRADATION; CATALYST; FILM;

D O I：

10.1111/php.12851

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Pb-9(PO4)(6)/Ag3PO4 photocatalysts with different amounts of Pb-9(PO4)(6) were successfully synthesised by the ion exchange method. The catalysts were characterized by X-ray diffractometry (XRD), High-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), Brunauer- Emmett-Teller (BET), Fourier transform infrared spectrometry (FT-IS), and ultraviolet-visible (UV-vis) spectroscopy. All Pb-9(PO4)(6)/Ag3PO4 photocatalysts show much higher photocatalytic activities than pure Ag3PO4 under visible light irradiation in the methyl-orange (MO) decomposition. Especially, the 3.0wt% Pb-9(PO4)(6)/Ag3PO4 photocatalyst shows the highest photoactivity and also high stability after five cycles. The MO degradation rate during each cycle is almost maintained at 97%. Photo-electrochemical measurement of photocatalysts verified that the enhancing photocatalytic activity was resulted from the electron-hole pair high separation. The photocatalytic activity enhancement of Pb-9(PO4)(6)/Ag3PO4 is closely related to <bold>OH</bold>, the main active oxygen species.

引用

页码：228 / 236

页数：9

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