Sunlight-Assisted Degradation of Dye Pollutants in Ag3PO4 Suspension

被引：251

作者：

Ge, Ming ^{[2
]}

Zhu, Na ^{[2
]}

Zhao, Yaping ^{[1
]}

Li, Jing ^{[3
]}

Liu, Lu ^{[2
]}

机构：

[1] E China Normal Univ, Dept Environm Sci, Shanghai 200062, Peoples R China

[2] Nankai Univ, Tianjin Key Lab Environm Remediat & Pollut Contro, Tianjin 300071, Peoples R China

[3] Nankai Univ, Gen English Language Dept, Tianjin 300071, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2012年 / 51卷 / 14期

关键词：

VISIBLE-LIGHT IRRADIATION; PHOTOCATALYTIC DEGRADATION; RHODAMINE-B; TIO2; PARTICLES; OXIDATIVE-DEGRADATION; DOPED TITANIA; AZO-DYE; WATER; SEMICONDUCTOR; PHENOL;

D O I：

10.1021/ie202864n

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Sunlight-induced photodegradation of rhodamine B over Ag3PO4 has been observed. Nanosized Ag3PO4 was synthesized by a facile ion-exchange route. X-ray powder diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, the Brunauer-Emmett-Teller surface area, UV-vis diffuse reflectance spectroscopy and photoluminescence spectra were employed to investigate the phase structure, morphology and optical property of the Ag3PO4 product. Nearly 100% of rhodamine B was degraded after a very short irradiation time using simulated sunlight in Ag3PO4 suspension, and the total organic carbon measurement revealed that a high degree of mineralization was achieved in the present photocatalytic system. Ag3PO4 catalyst has an excellent photocatalytic performance due to the high separation efficiency of electron and hole pairs. In the neutral pH solution, Ag3PO4 catalyst exhibited the best photoactivity under simulated sunlight. The photoinduced holes were considered to be the dominant active species in the photodegradation process.

引用

页码：5167 / 5173

页数：7

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