Copper/Graphene Based Materials Nanocomposites and Their Antibacterial Study: A Mini Review

Abstract

Due to their biocidal activity properties, graphene based materials have been widely studied especially in biomedical, agriculture and water treatment process which focus on mitigating the microbial resistance problem. However, the antibacterial performance of these materials alone are relatively weak and need to be improved in order to enhance their biological activity. Copper nanoparticles is a low cost metal also has the antibacterial properties which is almost similar with the silver and gold nanoparticles. The combination of these two materials had produced to a new potential material as another alternative for the antibacterial agents. Therefore, in this work, a brief review of copper/graphene based material nanocomposites and their antibacterial study was discussed.

Synergism effect of Murraya koneigii and Piper betle leaves extracts on antibacterial activity against Gram Positive bacteria

“…Figure 1 show the inhibition zone of the extracts on different ratio of concentration while This also was found in the research conducted by Raj and Yogini [4] where the synergistic effect between M.koneigii and Azadirachta indica leaves does not show antibacterial effect against Streptococous mutans. Hartini et al, [8] also stated antagonistic effect was recorded when P. betle and red betel (Piper crocatum) were combined for antibacterial activity against Staphylococcus aureus, Staphylococcus epidermidis or Eschericia coli. There was no significant difference between betel and red betel antibacterial activity against the three bacteria.…”

“…The antagonist is a phenomenon when the combination of the compound produces a lower overall effect than the additive effect of the agent alone [4]. There should be investigation made on the constituents present and the plant extracts as the activity can be lost upon fractionation [8]. This multiple constituent is important in performing the biological effects.…”

“…While for M. koenigii leaves showed remarkable antibacterial activity against Streptococcus mutans and it is achievable due to the presence of gallic acid and phenolics in the extract. M. koenigii also found to have a therapeutic effectiveness against multidrugresistant pathogens when silver nanoparticles are extracted from the aqueous extract of the leaves [13,8,24]. Besides that, methanolic and ethanolic extracts of M. koenigii leaves both are reported to have significant inhibitory activity against Escherichia coli (E. coli), Staphylococcus, Streptococcus, and Proteus [1].…”

The Effect of Carbon Infiltration Through CVI Techniques on The Physical Properties of ZTA

“…The use of carbon as a filler or reinforcement in ceramic matrix composites for a variety of applications, is well established [11,12]. The presence of carbon in composites serves to enhance the properties of the base material.…”