Growth inhibition of bacterial pathogens by photo-catalyst process of nano-alloys FeCuNi doped TiO under ultraviolet irradiation.

This study reports the application of FeCuNi nano-alloy doped TiO synthesized via the sol-gel method as an antibacterial with a sterilization rate greater than 95% under ultra-violet (UV) irradiation. The performance was characterized using X-ray diffraction (XRD), thermal analysis (TG-DTA), scanning electron microscope (SEM-EDX), and transmission electron microscope (TEM). The results showed that the sterilization process of FeCuNi-TiO in cell suspension of , and increased the effectiveness of UV irradiation at wavelength (λ) ≥ 385 nm after 120 min.

Marine plant mediated green synthesis of silver nanoparticles using mangrove : Effect of variable process and their antibacterial activity.

Most natural plants used in the synthesis of silver nanoparticles are limited to marine plants. To carry out applications, colloidal silver nanoparticles (AgNps) should have appropriate properties such as homogeneous shapes, small and narrow particle size distribution, and long time stability. This study aims to determine the effects of a variable process of AgNps mediated mangrove (RS) leaf extract, and antibacterial activity.

Accumulation of essential (copper, iron, zinc) and non-essential (lead, cadmium) heavy metals in Caulerpa racemosa, sea water, and marine sediments of Bintan Island, Indonesia.

 Heavy metals are materials naturally occurring in nature and increase with a rise in human activity. Ex-mining areas and domestic waste from human settlements are sources of heavy metal contamination that enter and pollute water, which then accumulates in various organisms including the   community. The accumulation of heavy metals in   has a wide impact on the food chain in aquatic ecosystems and humans because this alga is a consumptive commodity.

antibacterial textile cotton fiber construction based on ZnO-TiO nanorods template.

An alternative method of synthesizing ZnO-TiO nanorods is through route precipitation and sintering at 600 °C. In this study, the introduction of Ti into Zn in the molar ratio Ti:Zn (1:3) produced a composite ZnO-Low TiO (ZnO-LTiO) while 1:1 produced ZnO-High TiO (ZnO-HTiO). The effect of the Ti introduced on the anti-bacterial properties of ZnO-TiO nanorods was investigated with the product structure characterized by XRD and the optimal intensity at 2θ: 31.