Design of H3PW12O40/TiO2 nano-photocatalyst for efficient photocatalysis under simulated sunlight irradiation

被引：50

作者：

Zhao, Kun ^{[1
]}

Lu, Ying ^{[1
]}

Lu, Nan ^{[1
]}

Zhao, Yahui ^{[1
]}

Yuan, Xing ^{[1
]}

Zhang, Hao ^{[1
]}

Teng, Lianghui ^{[1
]}

Li, Fu ^{[2
]}

机构：

[1] NE Normal Univ, Sch Environm, State Environm Protect Key Lab Wetland Ecol & Veg, Changchun 130024, Peoples R China

[2] Jiamusi Univ, Coll Sci, Jiamusi 154007, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2013年 / 285卷

基金：

中国国家自然科学基金;

关键词：

H3PW12O40/TiO2; nano-photocatalyst; Fuchsin acid; Malachite green; Quantum efficiency; Light harvesting efficiency; Photocatalytic activity; TITANIUM-DIOXIDE; RHODAMINE-B; TIO2; DEGRADATION; LIGHT; FILMS; PHOTODEGRADATION; SOLAR; NANOPARTICLES; STABILITY;

D O I：

10.1016/j.apsusc.2013.08.101

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

H3PW12O40/TiO2 (PW12/TiO2) nano-photocatalyst was successfully synthesized through a modified sol-gel-hydrothermal method. The X-ray diffraction (XRD) patterns, Fourier transform infrared (FT-IR) spectra, UV-vis diffuse reflectance spectrum (UV-vis DRS), and N2 adsorption-desorption isotherms were characterized respectively to investigate the physical and chemical properties of prepared catalysts. Under simulated sunlight (320 nm < 780 nm) irradiation, the degradation of fuchsin acid, malachite green and p-nitrophenol (PNP) were carried out to evaluate the photocatalytic activity of PW12 ITi 02. The results showed that the pollutants degradation followed first-order kinetics, and the kinetic constants of photocatalytic degradation of fuchsin acid, malachite green and PNP were 2.82, 4.66, and 3.48 times as great as that using pristine TiO2, respectively. The high pollutants degradation efficiency was ascribed to the synergistic effect between H3 PIN12 040 and Ti02, which resulted in enhanced quantum efficiency and high light harvesting efficiency. We believe this work could provide new insights into the fabrication of photocatalyst with high photocatalytic performance and facilitate their practical application in environmental issues. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：616 / 624

页数：9

共 42 条

[1]

Study of the photocatalytic activity of nanocrystalline S, N-codoped TiO2 thin films and powders under visible and sun light irradiation [J].