g-C3N4/SiO2-HNb3O8 composites with enhanced photocatalytic activities for rhodamine B degradation under visible light

被引：32

作者：

Pan, Huiqi ^{[1
,2
,3
]}

Li, Xiukai ^{[1
,2
,3
]}

Zhuang, Zongjin ^{[1
,2
,3
]}

Zhang, Chi ^{[1
,2
,3
]}

机构：

[1] Jiangsu Univ, China Australia Joint Res Ctr Funct Mol Mat, Zhenjiang 212013, Peoples R China

[2] Jiangsu Univ, Sci Res Acad, Zhenjiang 212013, Peoples R China

[3] Jiangsu Univ, Sch Chem & Chem Engn, Zhenjiang 212013, Peoples R China

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2011年 / 345卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Photocatalysis; Visible light; Niobic acid; g-C3N4; Composite; GRAPHITIC CARBON NITRIDE; LAMELLAR NIOBIC ACID; HYDROGEN-PRODUCTION; IRRADIATION; DECOMPOSITION; WATER; PERFORMANCE; NIOBATE; PHOTODEGRADATION; CATALYSTS;

D O I：

10.1016/j.molcata.2011.05.024

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Visible light-responsive g-C3N4/SiO2-HNb3O8 composite photocatalysts were prepared by a solid state-reaction method with melamine as a g-C3N4 precursor. The photocatalytic activities of the samples were evaluated for rhodamine B (RhB) degradation under visible light irradiation and the results were compared with those obtained over pure SiO2-HNb3O8 and g-C3N4. Techniques such as XRD, FT-IR, SEM, TEM, and UV-vis diffuse reflectance spectroscopy were adopted to explore the characteristics of samples. The g-C3N4/SiO2-HNb3O8 composite materials exhibited superior activities than pure SiO2-HNb3O8 and g-C3N4; the sample prepared with SiO2-HNb3O8 to melamine ratio being 1:2 and the heating duration being 4h performed the best. The improved activity of g-C3N4/SiO2-HNb3O8 is attributed to the unique synergetic effect between SiO2-HNb3O8 and g-C3N4. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：90 / 95

页数：6

共 40 条

[1] Visible-light photocatalysis in nitrogen-doped titanium oxides [J].