氢氧化物
镍
氧化镍
抗菌活性
氧化物
化学
材料科学
退火(玻璃)
非阻塞I/O
无机化学
水溶液
核化学
细菌
冶金
催化作用
有机化学
生物
遗传学
作者
Xi Yan,Bing Huang,Aleksandra B. Djurišić,Chi Ming Chan,Fung Ping Leung,Wai Kin Chan,Doris W.T. Au
标识
DOI:10.1016/j.tsf.2009.04.018
摘要
Abstract Nickel-oxide-based films exhibiting antibacterial activity against both Gram-negative (Escherichia coli) and Gram-positive bacteria (Bacillus atrophaeus) have been fabricated by electrodeposition from aqueous solutions. However, after annealing of the films, no antibacterial activity has been observed. As-deposited films were found to consist of a mixture of nickel-oxide hydroxide and nickel hydroxide, while annealing resulted in the conversion of the films into pure NiO. Also, annealed films exhibited no production of H2O2, unlike as-deposited films. Thus, antibacterial activity of as-deposited films is related to the presence of nickel-oxide hydroxide/nickel hydroxide which results in the production of reactive oxygen species and antibacterial activity.
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