Facile synthesis of CeO2 nanoparticle sensitized CdS nanorod photocatalyst with improved visible-light photocatalytic degradation of rhodamine B

被引：83

作者：

Gu, Shansi ^{[1
,2
]}

Chen, Yaoning ^{[1
,2
]}

Yuan, Xingzhong ^{[1
,2
,3
]}

Wang, Hou ^{[1
,2
]}

Chen, Xiaohong ^{[3
]}

Liu, Yang ^{[1
,2
]}

Jiang, Qian ^{[1
,2
]}

Wu, Zhibin ^{[1
,2
]}

Zeng, Guangming ^{[1
,2
]}

机构：

[1] Hunan Univ, Coll Environm Sci & Engn, Changsha 410082, Hunan, Peoples R China

[2] Hunan Univ, Minist Educ, Key Lab Environm Biol & Pollut Control, Changsha 410082, Hunan, Peoples R China

[3] Collaborat Innovat Ctr Resource Conserving & Envi, Changsha 410083, Peoples R China

来源：

RSC ADVANCES | 2015年 / 5卷 / 97期

基金：

中国国家自然科学基金;

关键词：

SOLVOTHERMAL SYNTHESIS; CATALYST; TIO2; PERFORMANCE; ADSORBATES; EXCITATION; REDUCTION; COMPOSITE; OXIDATION; ALCOHOLS;

D O I：

10.1039/c5ra16114b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A heterostructure photocatalyst consisting of one-dimensional (1D) CdS nanorods (NRs) and cerium dioxide (CeO2) nanoparticles (NPs) was successfully synthesized via a solvothermal method. Different characterization techniques confirmed that CeO2 NPs were intimately attached on CdS NRs. The visible-light- driven photocatalytic activity was evaluated by the discoloration of rhodamine B (RhB). It was indicated that, under visible light illumination, the photocatalytic rate constant of CdS/CeO2 was nearly 3.4 times and 28 times higher than that of pure CdS and pure CeO2, respectively, owing to the high oxygen storage capacity of the CdS/CeO2 heterostructure, and the inhibition of electron-hole pair recombination benefitting from efficient electron transfer from CdS NRs to CeO2 NPs. In addition, the degradation mechanism of RhB on CdS/CeO2 was also discussed. This durable nanocomposite catalyst, with its excellent combination of CdS NRs and CeO2 NPs, is able to be a promising catalyst for RhB degradation under visible-light irradiation.

引用

页码：79556 / 79564

页数：9

共 46 条

[1]

Aioliva J. E. C., 2014, B MATER SCI, V37, P247

[2] Catalytic ozonation for the degradation of acetylsalicylic acid in aqueous solution by magnetic CeO2 nanometer catalyst particles [J].

Dai, Qizhou ;

Wang, Jiayu ;

Yu, Jie ;

Chen, Jun ;

Chen, Jianmeng .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2014, 144 :686-693

[3] Visible-light-induced degradation of rhodamine B by nanosized Bi2WO6 [J].

Fu, HB ;

Pan, CS ;

Yao, WQ ;

Zhu, YF .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (47) :22432-22439

[4] Graphene oxide-CdS composite with high photocatalytic degradation and disinfection activities under visible light irradiation [J].

Gao, Peng ;

Liu, Jincheng ;

Sun, Darren Delai ;

Ng, Wunjern .

JOURNAL OF HAZARDOUS MATERIALS, 2013, 250 :412-420

[5] Formation of Mesoporous Heterostructured BiVO4/Bi2S3 Hollow Discoids with Enhanced Photoactivity [J].

Gao, Xuehui ;

Wu, Hao Bin ;

Zheng, Lingxia ;

Zhong, Yijun ;

Hu, Yong ;

Lou, Xiong Wen .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2014, 53 (23) :5917-5921

[6] Freestanding nanowire ring laser [J].

Hu, Zhifang ;

Guo, Xin ;

Tong, Limin .

APPLIED PHYSICS LETTERS, 2013, 103 (18)

[7] Synthesis of reduced graphene oxide/CeO2 nanocomposites and their photocatalytic properties [J].

Ji, Zhenyuan ;

Shen, Xiaoping ;

Li, Minzhi ;

Zhou, Hu ;

Zhu, Guoxing ;

Chen, Kangmin .

NANOTECHNOLOGY, 2013, 24 (11)

[8] Controlled Synthesis of CeO2/Graphene Nanocomposites with Highly Enhanced Optical and Catalytic Properties [J].

Jiang, Linhai ;

Yao, Mingguang ;

Liu, Bo ;

Li, Quanjun ;

Liu, Ran ;

Lv, Hang ;

Lu, Shuangchen ;

Gong, Chen ;

Zou, Bo ;

Cui, Tian ;

Liu, Bingbing ;

Hu, Guangzhi ;

Wagberg, Thomas .

JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (21) :11741-11745

[9] Photodegradation of carboxylic acids on Pr6O11 surface. Enhancement by semiconductors [J].

Karunakaran, C. ;

Dhanalakshmi, R. ;

Anilkumar, P. .

CHEMICAL ENGINEERING JOURNAL, 2009, 151 (1-3) :46-50

[10] Hierarchical 3D NiO-CdS heteroarchitecture for efficient visible light photocatalytic hydrogen generation [J].

Khan, Ziyauddin ;

Khannam, Momina ;

Vinothkumar, Natarajan ;

De, Mahuya ;

Qureshi, Mohammad .

JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (24) :12090-12095

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