Journal
CRYSTENGCOMM
Volume 14, Issue 10, Pages 3528-3533Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2ce06752h
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Funding
- National Natural Science Foundation of China [21171006, 21105001, 20701001]
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Cu2-xSe nanoboxes with a well-defined hollow structure are successfully synthesized by using Cu2O nanocubes as sacrificial hard templates through a convenient wet-chemical method. Field-emission scanning electron microscopy (FESEM) observation shows that the Cu2-xSe nanocrystals have cubic morphology that are alike to the Cu2O templates. Transmission electron microscopy (TEM) observation shows that the Cu2-xSe nanocrystals have a hollow interior, and they are made of many tiny nanoparticles. The as-prepared Cu2-xSe nanoboxes exhibit a good response and reversibility to some organic gases, such as ethanol and acetone. The responses of the Cu2-xSe nanoboxes to 100 ppm ethanol and acetone are 35.1 and 32.1, respectively, at a working temperature of 300 degrees C. These results show that the Cu2-xSe nanoboxes are highly promising for gas sensor applications.
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