A Simple Surfactant-Free Solution PhaseSynthesis of Flower-like In2S3 Hierarchitecturesand their Photocatalytic Activities

Sultan Qaboos University Journal for Science

Kezhen Qi¹  Younghun Kim²  Uiseok Jeong²  Kholood Al Nofli³  Rengaraj Selvaraj³  Salma Al-Kindy³  Mika Sillanpää⁴ 

[1] 2College of Chemistry and Life Science, Shenyang Normal University, Shenyang, 110034, China;Department of Chemical Engineering, Kwangwoon University, Seoul 139-701, Korea;Department of Chemistry, College of Science, Sultan Qaboos University, Muscat, Al- Khodh 123, Sultanate of Oman;Laboratory of Green Chemistry, LUT Savo Sustainable Technologies, Lappeenranta University of Technology, Sammonkatu 12, FI-50130 Mikkeli, Finland;

关键词: In2S3 nanoflowers;    Solution-phase synthesis;    Capping agent;    Photocatalyst.;   

DOI  :  10.24200/squjs.vol19iss2pp29-36

来源: DOAJ

【 摘 要 】

Flower-like In2S3 hierarchical nanostructures were successfully prepared via a facile solution-phase route, using thiacetamide as both sulfur source and capping agent. Our experimental results demonstrated that the morphology of these In2S3 nanostructures can be easily modified by changing the ratio of In(NO3)3/thiacetamide. With the ratio increasing from 1:1.5 to 1:6, the In2S3 crystals exhibited flower-like morphology of varying size. XRD and HRTEM of the flowers revealed the cubic structure of In2S3; morphological studies examined by SEM and TEM showed that the synthesized In2S3 nanostructure was a flower-like hierarchitecture assembled from nanoscale flakes. XPS and EDX analysis confirmed the stoichiometry of In2S3 nanoflowers. The optical properties were investigated by UV-vis DRS, which indicated that the In2S3 nanoflower samples possess a band gap from 1.90 to 1.97 eV. Furthermore, photocatalytic activity studies revealed that the prepared In2S3 nanoflowers exhibit an excellent photocatalytic performance, degrading rapidly the aqueous methylene blue dye solution under visible light irradiation. These results suggest that In2S3 nanoflowers will be a promising candidate for a photocatalyst working under the visible light range.

【 授权许可】

Unknown