ZnS纳米球的水热法制备及其光催化性能研究

注册 English

ZnS纳米球的水热法制备及其光催化性能研究

刘海瑞 , 方力宇 , 贾伟 , 贾虎生

引用本文: 刘海瑞, 方力宇, 贾伟, 贾虎生. ZnS纳米球的水热法制备及其光催化性能研究[J]. 无机化学学报, 2015, (3): 459-464. doi: 10.11862/CJIC.2015.074 shu

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Citation: LIU Hai-Rui, FANG Li-Yu, JIA Wei, JIA Hu-Sheng. Fabrication of ZnS Nanoparticles with Enhanced Photocatalytic Activity by Hydrothermal Method[J]. Chinese Journal of Inorganic Chemistry, 2015, (3): 459-464. doi: 10.11862/CJIC.2015.074 shu

shu

ZnS纳米球的水热法制备及其光催化性能研究

刘海瑞 ^{1,2,
,} ,
方力宇 ^2, ,
贾伟 ^2, ,
贾虎生 ^2,

1.
1 河南师范大学物理与电子工程学院, 新乡 453007;
2.
2 太原理工大学材料科学与工程学院, 太原 030024

通讯作者: 刘海瑞 liuhairui1@hotmail.com

基金项目:
国家自然科学基金(NO.50432030、U1304110)资助项目。 (NO.50432030、U1304110)

摘要: 在表面活性剂十六烷基三甲基溴化铵(CTAB)的辅助下, 以乙酸锌为锌源, 硫脲(NH₂)2CS为硫源, 使用水热法通过改变反应时间, 成功制备了不同粒径的ZnS球状颗粒。利用X射线衍射(XRD)、扫描电子显微镜(SEM)、X-射线能谱, 高分辨透射电子显微镜(HRTEM))、紫外可见分光光谱和光致发光谱(PL)等测试手段对样品的晶体结构、形貌、光学性质进行了分析。通过对不同粒径的ZnS纳米颗粒对亚甲基蓝的光催化降解的催化活性进行了评估。实验结果表明：在表面活性剂CTAB的作用下, 随着反应时间的增加, 生成的ZnS晶核生长成纳米颗粒, 然后ZnS纳米颗粒将进一步发生团聚从而形成平均粒径超过500 nm的ZnS纳米球, 但制备的ZnS产物的晶体结构均为立方纤锌矿结构。随着ZnS粒径的增加, 样品的紫外吸收峰从418 nm逐渐蓝移到362 nm, 而PL发射峰位的峰强随着粒径的增大而增强。光催化结果显示, 反应12 h制备的ZnS纳米球的光催化性能最佳。

关键词:

ZnS;球状结构;水热法;光催化

English

Fabrication of ZnS Nanoparticles with Enhanced Photocatalytic Activity by Hydrothermal Method

1.
1 College of Physics and Electronics Engineering, Henan Normal University, Xinxiang, Henan 453007, China;
2.
2 College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Corresponding author: 刘海瑞 liuhairui1@hotmail.com

Received Date: 19 June 2014
Fund Project:
国家自然科学基金(NO.50432030、U1304110)资助项目。

Abstract: Under the role of CTAB, different size ZnS spherical-like particles were fabricated by hydrothermal method. The crystal structure, morphology, composition and optical property of the samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high resolution transmission electron microscopy (HRTEM), X-ray energy spectrum (EDS), UV-Vis absorption spectrum and photoluminescence spectrum (PL). Photocatalytic activities were evaluated by degradation of MB solution. The results show that ZnS nanoparticles were formed by aggregation of crystal nucleus under the role of CTAB. With the increase of reaction time, the size of ZnS particles increased to 500 nm, however, the crystal structure of product has no change. With the increase of particle size, the UV-Vis absorption peak of samples shifted from 418 to 362 nm and the PL intensity further increased. Finally, the photocatalytic activity presented that fabricated ZnS nanoparticles with reaction time 12 h showed best photcatalytic performance.

Key words:

ZnS;spherical structure;hydrothermal method;photocatalysis

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