Synthesis of ionic liquid-modified BiPO4 microspheres with hierarchical flower-like architectures and enhanced photocatalytic activity

被引：11

作者：

Lv, Hua ^{[1
]}

Guang, Jing ^{[1
]}

Liu, Yumin ^{[1
]}

Tang, Haibo ^{[1
]}

Zhang, Peng ^{[1
]}

Lu, Yan ^{[1
]}

Wang, Jianji ^{[1
]}

机构：

[1] Henan Normal Univ, Collaborat Innovat Ctr Henan Prov Green Mfg Fine, Key Lab Green Chem Media & React, Minist Educ,Sch Chem & Chem Engn, Xinxiang 453007, Henan, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 122期

基金：

中国国家自然科学基金;

关键词：

ASSISTED HYDROTHERMAL SYNTHESIS; IONOTHERMAL SYNTHESIS; TIO2; DEGRADATION; NANOSTRUCTURES; NANOPARTICLES; CONSTRUCTION; COMPOSITES; MECHANISM; PHOSPHATE;

D O I：

10.1039/c5ra14626g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this work, hierarchical flower-like BiPO4 microspheres were successfully synthesized by a microwave-assisted hydrothermal reaction of bismuth nitrate with [C(4)mim][PF6] (1-butyl-3-methylimidazolium hexafluorophosphate) in water at 160 degrees C, where the ionic liquid could act as a phosphorus source, surface modified agent and template. The photocatalytic activities of the as-prepared BiPO4 samples were evaluated by decolorization of rhodamine B in aqueous solution under UV light irradiation. It was found that the BiPO4 sample modified with ionic liquid (IL-BiPO4) exhibited significantly enhanced photocatalytic activity in comparison with the unmodified one prepared in the absence of [C(4)mim][PF6]. In addition, the effect of ionic liquid modification on the improved photocatalytic activity was investigated in detail and a possible photocatalytic mechanism was proposed for IL-BiPO4. It is suggested that the significantly improved photocatalytic activity of IL-BiPO4 could be mainly attributed to trapping of the photoinduced electron at the conduction band of IL-BiPO4 and thus effectively improving the separation efficiency of photoinduced electron-hole pairs due to ionic liquid modification.

引用

页码：100625 / 100632

页数：8

共 51 条

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