Size- and Morphology-Dependent Antibacterial Properties of Cuprous Oxide Nanoparticle and Their Synergistic Antibacterial Effect

She, Boxi; Wan, Xuejuan; Tang, Jiaoning; Deng, Yuanming; Zhou, Xin; Xiao, Caihua

doi:10.1166/sam.2016.2696

Cited by 8 publications

(2 citation statements)

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“…is order is in reverse correlation with the mean sizes of Cu 2 O NP determined in Table 2. is result is in accordance with other studies on the biocidal activities of NP, where smaller particles inactivation of microorganisms was stronger due to higher total surface areas [42][43][44]. In our study, the highest inactivation effect (97%) was achieved at 160 ppm of Cu 2 O NP (Figure 4(d), sample 1p8) after 24 h of treatment, while in another similar study, the same effect was observed at about 13 ppm or 0.1 mM of Cu 2 O NP (sizes about 40 nm) after 18 h of treatment [7].…”

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confidence: 93%

Effects of Synthetic Procedures and Postsynthesis Incubation pH on Size, Shape, and Antibacterial Activity of Copper (I) Oxide Nanoparticles

Nguyen

Trinh

2020

Journal of Chemistry

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Copper (I) oxide nanoparticles (Cu2O NP) were synthesized by reducing CuSO4 with glucose in the presence of polyvinyl alcohol as a capping agent. We used three different synthetic procedures with a fast reaction (procedure 1p), a fast-then-slow reaction (procedure 2p), and a slow-then-fast reaction (procedure 3p). The reaction rates were controlled by changing the temperature and the speed of adding reagents. The synthesized Cu2O NP were subsequently incubated for 24 h in a pH 6 solution (Cu2O NP6) or a pH 8 solution (Cu2O NP8) at 5°C. XRD and SEM images analysis revealed that the 1p procedure produced smaller NP, while the 2p procedure produced larger but more uniform NP. The 3p procedure produced the largest NP with a higher size variation. The 24-hour acidic postsynthesis incubation resulted in an etching effect, which reduced the size and size variation of Cu2O NP6. To evaluate the antibacterial activity, E. coli suspensions were mixed with the obtained Cu2O NP (32, 96, or 160 ppm) for different time intervals (1 or 24 h) and then grown on Petri dishes at 37°C for 24 h. Higher doses, smaller sizes of Cu2O NP, and longer contact times with the bacterial suspension resulted in higher inactivation efficiencies. Cu2O NP6 showed higher antibacterial effects at low doses, possibly due to the etching effect and the positive surface charge. Increasing the Cu2O doses from 32 to 96 and 160 ppm noticeably increased the antibacterial effect of the Cu2O NP8, but not significantly for Cu2O NP6. We suggested that the Cu2O NP6 suffered from agglomeration at high doses due to their high surface activity and low surface charges.

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confidence: 93%

Effects of Synthetic Procedures and Postsynthesis Incubation pH on Size, Shape, and Antibacterial Activity of Copper (I) Oxide Nanoparticles

Nguyen

Trinh

2020

Journal of Chemistry

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“…Antibacterial activity was shown to depend on the size of the nanoparticles ( 11 ). Nanoparticles of <50 nm demonstrated a higher level of activity than larger particles (such as 250 or 350 nm) ( 12 ). However, the use of NPs together with QSIs has rarely been studied for the inhibition of biofilm formation.…”

Section: Introductionmentioning

confidence: 99%

Combination of 2- tert -Butyl-1,4-Benzoquinone (TBQ) and ZnO Nanoparticles, a New Strategy To Inhibit Biofilm Formation and Virulence Factors of Chromobacterium violaceum

Liu

Chang

et al. 2023

mSphere

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The combination of ZnO-NPs and TBQ (ZnO-TBQ) can compete with the inducer N -decanoyl-homoserine lactone (C 10 -HSL) by binding to CviR and downregulate genes related to the CviI/CviR system to interrupt the QS system of C. violaceum ATCC 12472. The downstream genes responding to cviR were also downregulated so that virulence factors and biofilm formation were inhibited.

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Synthesis and Characterization of Antibacterial Activity of Spinel Chromium-Substituted Copper Ferrite Nanoparticles for Biomedical Application

Ansari

Baykal

Asiri

et al. 2018

J Inorg Organomet Polym

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Size- and Morphology-Dependent Antibacterial Properties of Cuprous Oxide Nanoparticle and Their Synergistic Antibacterial Effect

Cited by 8 publications

References 0 publications

Effects of Synthetic Procedures and Postsynthesis Incubation pH on Size, Shape, and Antibacterial Activity of Copper (I) Oxide Nanoparticles

Effects of Synthetic Procedures and Postsynthesis Incubation pH on Size, Shape, and Antibacterial Activity of Copper (I) Oxide Nanoparticles

Combination of 2- tert -Butyl-1,4-Benzoquinone (TBQ) and ZnO Nanoparticles, a New Strategy To Inhibit Biofilm Formation and Virulence Factors of Chromobacterium violaceum

Synthesis and Characterization of Antibacterial Activity of Spinel Chromium-Substituted Copper Ferrite Nanoparticles for Biomedical Application

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