e-time studies (Figure 7) the absorbances are found to decrease with [CTAB] when the reaction was carried above the critical micellar concentration of the CTAB. This is due to the association, incorporation and/or solubilization of Mimusops elengi leaf extract into the micellar palisade and Stern layer of CTAB micelles takes place through hydrophobic interactions. On the other hand, Ag+ ions are preferentially

(a) (b)

Figure 3. (a) TEM and (b) SAED images of biosynthesized Ag-nanoparticles using Mimusops elengi (Maulsari) leaf extract. Reaction condition [Ag+] = 10.0 × 10−4 mol・dm−3.

Figure 4. UV-Vis spectra of an aqueous solution of biosynthesized Ag-nanoparticles in presence of CTAB (10.0 × 10−4 mol・dm−3) at 30˚C. Reaction conditions [Ag+] = 10 × 10−4 mol・dm−3.

(a) (b)

Figure 5. (a) TEM and (b) SAED images of biosynthesized Ag-nanoparticles using Mimusops elengi (Maulsari) leaf extract in presence of CTAB (4.0 × 104 mol・dm3). Reaction condition [Ag+] = 10.0 × 104 mol・dm3.

(a) (b)

Figure 6. (a) TEM and (b) SAED images of biosynthesized Ag-nanoparticles using Mimusops elengi (Maulsari) leaf extract in presence of CTAB (10.0 × 10−4 mol・dm−3). Reaction condition [Ag+] = 10.0 × 10−4 mol・dm−3.

Figure 7. Effect of [Ag+] on the SPR of biosynthesized Ag-nanoparticles at 30˚C. Reaction conditions: [Ag+] = 10.0 × 10−4 mol・dm−3, [CTAB] = 4.0 × 10−4 (), 10.0 () and 16.0 × 10−4 mol・dm−3 ().

located in the water rich Stern layer [54] - [56] and the Ag+ ions were reduced into Ago. The reaction site i.e. Stern layer has a high population of Ago atoms. That results, single Ago to adsorb, nucleate or complex with Ag+ and grow into silver clusters [] [46] [47] . Therefore the further reduction of Ag+ ions may be regarded as finished. The nanoparticles are protected, stabilized, and/or capped by a thin layer of Mimusops leaf constituents along with the CTAB (Figure 6(a)).

4. Conclusion

Mimusops elengi, L. (Maulsari) leaves extract with surfactant CTAB was successfully used for the synthesis of bio-conjugated silver nano-materials. This spanking new and simple method for biosynthesis of silver nanoparticles offers a valuable contribution in the area of green synthesis and nanotechnology. Interestingly, sub-mi- cellar, post-micellar and dilution effect of CTAB was not observed in the present system because constituents of Mimusops elengi, L. (Maulsari) leaves extract are better capping agents. Carefully monitoring the absorbance- time functions is sensitive technique which allows an easy overview in determining if any nanoparticles aggregation has occurred on to the surface of nano-materials.


The authors wish to thank Prof. Zaheer Khan, former Professor in the Department of Chemistry, Jamia Millia Islamia (Central University) for introducing us to green nanochemistry.

Cite this paper

RabiaAhmad,Sajjad HussainParrey,QamerFaisal, (2016) Role of Cetyltrimethylammonium Bromide in the Green Synthesis of Silver Nanoparticles Using Mimusops elengi , Linn. (Maulsari) Leaf Extract. Advances in Nanoparticles,05,44-52. doi: 10.4236/anp.2016.51005


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