Alkali-dependent synthesis of flower-like ZnO structures with enhanced photocatalytic activity via a facile hydrothermal method

被引：93

作者：

Sun, Lin ^{[2
]}

Shao, Rong ^{[1
]}

Chen, Zhidong ^{[2
]}

Tang, Lanqin ^{[1
]}

Dai, Yong ^{[1
]}

Ding, Jianfei ^{[1
]}

机构：

[1] Yancheng Inst Technol, Coll Chem & Biol Engn, Yancheng 224051, Peoples R China

[2] Changzhou Univ, Inst Petrochem Technol, Changzhou 213164, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2012年 / 258卷 / 14期

关键词：

ZnO; Hydrothermal method; Crystal growth; Photocatalysis; SOLVOTHERMAL SYNTHESIS; GROWN ZNO; AZO DYES; FABRICATION; ROUTE; PHOTOLUMINESCENCE; MICROSTRUCTURES; NANOSTRUCTURES; DEGRADATION; SIZE;

D O I：

10.1016/j.apsusc.2012.02.034

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：

Flower-like ZnO structures with high photocatalytic performance were successfully synthesized via a facile hydrothermal method. Alkaline environment played a critical role during the morphological transformation. When the molar ratio of Zn(CH3COO)(2)center dot 2H(2)O to NaOH was set as 1:8 in the presence of triethanolamine (TEA), and the molar ratio of Zn2+ to TEA was 1:9, the flower-like ZnO product was produced. The hexagonal sphere-like, oblate-like, and hexagonal biprism-like samples were also obtained by adjusting the molar ratio of Zn2+ to NaOH as 1:2, 1:5 and 1:12 with the presence of invariable amount of TEA, respectively. The prepared ZnO products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Brunauer-Emmett-Teller (BET) surface area. Photodegradation experiments of the samples were carried out by choosing Methylene Blue (MB) as a model target under UV irradiation with homemade photocatalytic apparatus. Among these products, flower-shaped samples exhibited the highest photocatalytic activity. (C) 2012 Elsevier B. V. All rights reserved.

引用

页码：5455 / 5461

页数：7

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