Abstract
Flower-like hierarchical ZnO structures assembled by porous single-crystalline nanosheets were firstly synthesized by a one-pot wet-chemical method followed by an annealing treatment. Then, polyethylenimine (PEI) was used to modify the flower-like hierarchical ZnO structures followed by anchoring Au nanoparticles (NPs) on their surface through electrostatic interactions. The Au-modified flower-like hierarchical ZnO structures were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD) and energy dispersive spectrum (EDS). It can be found that Au NPs with a mean diameter of 12nm was uniformly modified on the surface of the porous single-crystalline ZnO nanosheets. The as-prepared products exhibited a good response to acetone with a linear range of 0.5–100ppb under the optimized operating temperature of 300°C. The lowest detection concentration was 0.5ppb, which is the lowest detection limit to our knowledge.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
