%0 Journal Article
%T Novel Candy-like Cu4O3 Microstructure: Facile Wet Chemical Synthesis, Formation Mechanism, and Good Long-Term Antibacterial Activities
%J -
%D 2018
%R https://doi.org/10.1021/acsami.8b14470
%X The novel candy-like Cu4O3 microstructure has been synthesized successfully for the first time by a facile wet chemical method, and the formation mechanism was studied based on series of control experiments. The antibacterial activities of the candy-like Cu4O3 were evaluated by means of Gram-negative Escherichia coli (E. coli) and Gram-positive Staphylococcus saureus (S. aureus). The antibacterial mechanism was investigated by tracing the morphology evolution of the bacteria. The results show that the candy-like Cu4O3 microstructure was formed underwent the route of Cu(NH3)42+ ¡ú Cu(OH)42¨C ¡ú Cu(OH)2 ¡ú CuO ¡ú Cu4O3 nuclei ¡ú Cu4O3 crystal growth ¡ú candy-like Cu4O3, and optimal reaction conditions are required to obtain the candy-like Cu4O3. The candy-like Cu4O3 microstructure exhibits good long-term antibacterial activities to both E. coli and S. aureus bacteria. Critical concentration of Cu2+ ions released from the candy-like Cu4O3 was found responsible for the sudden increase beyond 90% in antibacterial activity
%U https://pubs.acs.org/doi/10.1021/acsami.8b14470