Nanocomposite of exfoliated bentonite/g-C3N4/Ag3PO4 for enhanced visible-light photocatalytic decomposition of Rhodamine B

被引：65

作者：

Ma, Jianfeng ^{[1
,2
,3
]}

Huang, Daiqin ^{[1
]}

Zhang, Wenyi ^{[1
]}

Zou, Jing ^{[1
]}

Kong, Yong ^{[1
]}

Zhu, Jianxi ^{[4
]}

Komarneni, Sridhar ^{[3
]}

机构：

[1] Changzhou Univ, Sch Environm & Safety Engn, Jiangsu 213164, Peoples R China

[2] Changzhou Univ, Adv Catalysis & Green Mfg Collaborat Innovat Ctr, Jiangsu 213164, Peoples R China

[3] Penn State Univ, Mat Res Inst, Mat Res Lab, University Pk, PA 16802 USA

[4] Chinese Acad Sci, Guangzhou Inst Geochem, Key Lab Mineral & Metallogeny, Guangzhou 510640, Peoples R China

来源：

CHEMOSPHERE | 2016年 / 162卷

基金：

中国国家自然科学基金;

关键词：

Silver phosphate; g-C3N4; Exfoliated bentonite; Visible light photocatalysis; Rhodamine B; HIGHLY EFFICIENT; COMPOSITE PHOTOCATALYST; HYBRID PHOTOCATALYSTS; AG3PO4; NANOPARTICLES; HYDROGEN EVOLUTION; METHYL-ORANGE; DEGRADATION; G-C3N4; CARBON; PHOTODEGRADATION;

D O I：

10.1016/j.chemosphere.2016.07.089

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Novel visible-light-driven heterojunction photocatalyst comprising exfoliated bentonite, g-C3N4 and Ag3PO4 (EB/g-C3N4/Ag3PO4) was synthesized by a facile and green method. The composites EB/g-C3N4/Ag3PO4 were characterized by X-ray diffraction, Transmission electron microscopy, Fourier transform infrared spectroscopy, UV-Vis diffuse reflectance spectroscopy and the Brunauer, Emmett, and Teller (BET) surface area method. Under visible light irradiation, EB/g-C3N4/Ag3PO4 composites displayed much higher photocatalytic activity than that of either pure g-C3N4 or pure Ag3PO4 in the degradation of Rhodamine B (RhB). Among the hybrid photocatalysts, EB/g-C3N4/Ag3PO4 composite containing 20 wt% Ag3PO4 exhibited the highest photocatalytic activity for the decolorization of RhB. Under the visible-light irradiation, the RhB dye was completely decolorized in less than 60 min. The enhanced photocatalytic performance is attributed to the Stable structure, enlarged surface area, strong adsorbability, strong light absorption ability, and high-efficiency separation rate of photoinduced electron-hole pairs. Our finding paves a way to design highly efficient and stable visible-light-induced photocatalysts for practical applications in wastewater treatment. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：269 / 276

页数：8

共 49 条

[1] Facet Effect of Single-Crystalline Ag3PO4 Sub-microcrystals on Photocatalytic Properties [J].

Bi, Yingpu ;

Ouyang, Shuxin ;

Umezawa, Naoto ;

Cao, Junyu ;

Ye, Jinhua .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (17) :6490-6492

[2] Photocatalytic degradation of model textile dyes in wastewater using ZnO as semiconductor catalyst [J].

Chakrabarti, S ;

Dutta, BK .

JOURNAL OF HAZARDOUS MATERIALS, 2004, 112 (03) :269-278

[3] Removal of non-steroidal anti-inflammatory drugs from primary and secondary effluents in a photocatalytic membrane reactor [J].

Darowna, Dominika ;

Grondzewska, Sara ;

Morawski, Antoni W. ;

Mozia, Sylwia .

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, 2014, 89 (08) :1265-1273

[4] An investigation of Cu(II) adsorption by raw and acid-activated bentonite: A combined potentiometric, thermodynamic, XRD, IR, DTA study [J].

Eren, E. ;

Afsin, B. .

JOURNAL OF HAZARDOUS MATERIALS, 2008, 151 (2-3) :682-691

[5] Removal of Rhodamine B with Fe-supported bentonite as heterogeneous photo-Fenton catalyst under visible irradiation [J].

Gao, Yaowen ;

Wang, Yan ;

Zhang, Hui .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2015, 178 :29-36

[6] Synthesis and Efficient Visible Light Photocatalytic Hydrogen Evolution of Polymeric g-C3N4 Coupled with CdS Quantum Dots [J].

Ge, Lei ;

Zuo, Fan ;

Liu, Jikai ;

Ma, Quan ;

Wang, Chen ;

Sun, Dezheng ;

Bartels, Ludwig ;

Feng, Pingyun .

JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (25) :13708-13714

[7] Synthesis of MWNTs/g-C3N4 composite photocatalysts with efficient visible light photocatalytic hydrogen evolution activity [J].

Ge, Lei ;

Han, Changcun .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2012, 117 :268-274

[8] Enhanced visible light photocatalytic activity of novel polymeric g-C3N4 loaded with Ag nanoparticles [J].

Ge, Lei ;

Han, Changcun ;

Liu, Jing ;

Li, Yunfeng .

APPLIED CATALYSIS A-GENERAL, 2011, 409 :215-222

[9] Novel visible light-induced g-C3N4/Bi2WO6 composite photocatalysts for efficient degradation of methyl orange [J].

Ge, Lei ;

Han, Changcun ;

Liu, Jing .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 108 (1-2) :100-107

[10] Synthesis of CdS- and ZnS-modified bentonite nanoparticles and their applications to the degradation of eosin B [J].

Ghiaci, M. ;

Sedaghat, M. E. ;

Aghaei, H. ;

Gil, A. .

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY, 2009, 84 (12) :1908-1915

← 1 2 3 4 5 →