Synthesis of selenium nanorods with assistance of biomolecule

Abstract

Nanorods of one-dimensional (1D) trigonal selenium (t-Se) are synthesized using biomolecule substances for five different aging times (1 h, 2 h, 3 h, 1 day and 4 days) by precipitation method. XRD analysis indicates a shift of the (1 0 1) plane towards higher diffraction angle for 1 day aging time. It is observed that the crystallite size decreases with increase in aging time except for an aging period of 4 days. FTIR analysis confirmed that the presence of stretching and bending vibrations of Se-O in both synthesized and commercial selenium samples at 465, 668 and 1118 cm −1 . The FESEM micrographs are evident for the changes of rod size as a function of aging time. It is observed that the optical band gap energy is increased with aging time up to 1 day, whereas it decreases in 4 days aging time.

Green synthesis of selenium nanoparticles mediated from Ceropegia bulbosa Roxb extract and its cytotoxicity, antimicrobial, mosquitocidal and photocatalytic activities

“…The small vibrational peaks 1376 to 1250 cm −1 corresponds to the bending C–H, C–N, O–H, C–X and C–N–C stretches attributed to alkanes, amines and carboxylic groups. However, these functional groups are confirms the involvement of different reducing and stabilizing agents in the synthesis of SeNPs 20 .

Figure 1 Rapid synthesized SeNPs ( A ) UV–visible absorbance spectrum analysis, ( B ) FT-IR analysis and ( C ) XRD analysis.

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“…In vitro cytotoxicity. Figure 6A-E displays the in-vitro cytotoxic potentiality of SeNPs at different concentrations (0, 5,10,15,20,25,30,35,40,45, 50 µg/mL) and its effects on proliferation of HBL-100 cells (Fig. 6A,C) and MDA-MB-231 cells (Fig.…”

“…The larval toxicity was analyzed www.nature.com/scientificreports/ as per the WHO standard guidelines (WHO, 1996) with slight modifications. Accordingly, 25 healthy 1st to 4th instar larvae were introduced separately into a 250 mL bioassay container, loaded with 199 mL tap water and SeNPs at various concentrations (10,20,30,40 and 50 mg/mL). Larval tissues from control and treated Ae.…”

Phytofabrication of Selenium Nanoparticles From Emblica officinalis Fruit Extract and Exploring Its Biopotential Applications: Antioxidant, Antimicrobial, and Biocompatibility

“…Similarly, peak at 1,651 cm -1 (amide I vibrations) in aqueous fruit extract of E. officinalis was shifted to higher frequencies 1,662 cm -1 in PF-SeNPs biosynthesis, which shows the interaction of proteins of aqueous fruit extract of E. officinalis with selenium through the amine groups. The large and intense peak at 1,050 cm -1 in aqueous fruit extract of E. officinalis was shifted to 1,042 cm -1 in PF-SeNPs, which represents the characteristic Se–O stretching vibration, according to the report of Kannan et al (2014) and accomplishes the successful biosynthesis of PF-SeNPs. According to Kimura et al (2005), peaks at 1,050 cm -1 (C-O), 1,540 cm -1 (C-N-H) and 1,660 cm -1 (HN-H) are indicative of carbohydrate and protein character, respectively.…”

Green Synthesis of Selenium Nanoparticle Using Leaves Extract of Withania somnifera and Its Biological Applications and Photocatalytic Activities

“…b Band gap energy of selenium NPs at 24 h FT-IR spectra of synthesized selenium NPs methods. Previous reports also demonstrate that green Se nanoparticles are better for the environment[28].…”