Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 1195, Issue -, Pages 787-795Publisher
ELSEVIER
DOI: 10.1016/j.molstruc.2019.06.030
Keywords
Costus speciosus; CS-Pt-TiO2; Antioxidant; Photoactivity
Categories
Funding
- DST, New Delhi, Government of India through SERB [EMR/2017/003583]
- UGC, New Delhi, Government of India [F MRP-6829/16]
- FCT [SFRH/BPD/86971/2012]
- Fundação para a Ciência e a Tecnologia [SFRH/BPD/86971/2012] Funding Source: FCT
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The antioxidative and antidiabetic properties of Costus speciosus leaf extract assisted nanoparticles (CS-Pt modified TiO2) were compared with pristine TiO2 NPs along with standard ascorbic acid (AA). CS-Pt nanoparticles were synthesized through bioreduction process and supported on titanium dioxide semiconductor. Costus speciosus (CS) leaf extract was used as reducing and capping agent. Initially, CS-Pt nanoparticles synthesis was carried out with ethanolic extract of CS, later, two different wt% of CS-Pt supported TiO2 were prepared through sol-gel cum solvothermal process. The prepared materials have been characterized using different characterization techniques such as XRD, FT-IR, Raman, SEM, HR-TEM, EDS, DRS, PL and XPS measurements. CS-Pt-TiO2 nanocomposites showed well dispersion of Pt nano-particles on TiO2 surface. The prepared materials have been effectively utilized for in-vitro antioxidant and in vitro antidiabetic activity. Moreover, the photocatlytic activity of the materials has been tested toward NBB degradation under visible light. CS-Pt NPs modified TiO2 composites show better activity when compared with pristine TiO2 in all cases. (C) 2019 Elsevier B.V. All rights reserved.
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