Ultrasonic microwave assisted eco-benign production of novel PTPs-NiNPs: A new insight into photocatalytic and biocidal applications

Background

Clean water is a significant global issue, and many traditional approaches have plenty of disadvantages. New techniques and technologies have been developed to solve the water purification issue in order to get over this obstacle.

Methods

Here, we present a novel and efficient biogenic method for synthesizing nickel nanoparticles (PTPs-NiNPs) by using phosphotyrosine phosphatase (PTPs) of Triticum aestivum seeds extract. The phosphotyrosine phosphatase performed an essential role in the stabilization, reduction and capping of PTPs-NiNPs.

Significant Findings

The physicochemical properties of PTPs-NiNPs were inquired by FTIR, XRD, XPS, SEM, HRTEM, EDS and zeta potential and UV–visible analysis. The synthesized nanoparticles showed remarkable properties as both an antibacterial disinfectant and a photocatalyst. The PTPs-NiNPs showed outstanding photocatalytic activity, degrading 99 % of methylene blue (MB) after only 30 min of irradiation. The PTPs-NiNPs demonstrated remarkable durability as a photo-catalyst after 5 test cycles. Furthermore, it was observed that PTPs-NiNPs exhibited zones of inhibition of 27(±0.2), 29(±0.1), 18(±0.3), and 15(±0.2) mm, respectively, under both light and dark conditions, indicating their strong bacterial inhibition activity against both Escherichia coli and Staphylococcus aureus bacteria. Moreover, PTPs-NiNPs considerably scavenged 2,2-diphenyl-1-picrylhydrazyl (DPPH) radicals, showing high antioxidative potential. The results indicate that biogenic PTPs-NiNPs could be used as a long-lasting antibacterial agent and an efficient alternative photocatalyst for the deprivation of dyes in wastewater.