Abstract
In this study, we report the synthesis of platinum nanoparticles (Cs-PtNPs) using an aqueous extract of Caulerpa sertularioides as a reducing agent. Cs-PtNPs were characterized by UV–Vis spectroscopy, fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), field emission electron microscopy (FE-SEM), energy-dispersive X-ray spectroscopy (EDAX), high-resolution transmission electron microscopy (HR-TEM) and dynamic light scattering (DLS) analysis. Cs-PtNPs are spherical with a particle size of 6–22 nm. Cs-PtNPs have been shown to have highly effective antioxidant activities with 74% for DPPH, 63% for reducing power, and 59% for total antioxidant at 1 mg/ml, and results were compared with standard L-ascorbic acid. Furthermore, the Cs-PtNPs demonstrated excellent antibacterial activity against the Gram-negative bacteria, Vibrio parahaemolyticus with the highest zone of inhibition (18 mm) at 50 µg/ml. Moreover, Artemia nauplii showed less toxicity when treated with Cs-PtNPs at 150 µg/ml, indicating that the Cs-PtNPs are less toxic and environment friendly.
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The authors and R. Anjali gratefully acknowledge the DST-INSPIRE Scheme (DST/INSPIRE Fellowship/2015/ IF150023 dated 20.02.2015) for providing financial support. They also thank the RUSA scheme Phase 2.0 Grant [F-24-51/2014-U, Policy (TNMulti-Gen), Dept of Edn, Govt. of India. Dt. 09.10.2018]. Prof. SangGuan You thanks the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2018R1A6A1A03023584) for the support.
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Palanisamy, S., Anjali, R., Jeneeta, S. et al. An effective bio-inspired synthesis of platinum nanoparticles using Caulerpa sertularioides and investigating their antibacterial and antioxidant activities. Bioprocess Biosyst Eng 46, 105–118 (2023). https://doi.org/10.1007/s00449-022-02816-7
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DOI: https://doi.org/10.1007/s00449-022-02816-7