Article Title

Ag₂Se complex nanostructures with photocatalytic activity and superhydrophobicity

Authors

Huaqiang Cao, Department of Chemistry, Tsinghua University, Beijing 100084, China
Yujiang Xiao, Department of Chemistry, Tsinghua University, Beijing 100084, China School of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
Yuexiang Lu, Department of Chemistry, Tsinghua University, Beijing 100084, China
Jiefu Yin, Department of Chemistry, Tsinghua University, Beijing 100084, China
Baojun Li, Department of Chemistry, Tsinghua University, Beijing 100084, China
Shuisheng Wu, Department of Chemistry, Tsinghua University, Beijing 100084, China College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
Xiaoming Wu, Department of Chemistry, Tsinghua University, Beijing 100084, China School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China

Keywords

Nanostructures, photocatalytic, photoluminescence, superhydrophobicity, silver selenide

Abstract

Single-crystalline Ag2Se complex nanostructures have been synthesized via a solvothermal route in which selenophene (C4H4Se) as a selenylation source reacts with AgNO3 at a temperature of 240 °C. An orthorhombic phase β-Ag2Se nanostructure was identified by X-ray diffraction (XRD), Raman spectroscopy, field emission scanning electron microscopy (FE-SEM), high resolution transmission electron microscopy (HRTEM), and photoluminescence (PL) spectroscopy. The wettability of the as-synthesized β-Ag2Se nanostructure was studied by measurement of the water contact angle (CA). Static water CA values of over 150° were obtained, which can be attributed to the β-Ag2Se complex nanostructure having a combination of micro- and nanostructures. The superhydrophobic Ag2Se nanostructure may find applications in self-cleaning. Additionally, the photocatalytic activity of the as-synthesized β-Ag2Se nanostructure was evaluated by photodegradation of rhodamine B (RhB) dye under ultraviolet (UV) light irradiation.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-010-0057-x

Publisher

Tsinghua University Press

Recommended Citation

Huaqiang Cao,Yujiang Xiao,Yuexiang Lu,Jiefu Yin,Baojun Li,Shuisheng Wu,Xiaoming Wu, Ag2Se complex nanostructures with photocatalytic activity and superhydrophobicity. NanoRes.2010, 3(12): 863–873