Nur Syahirah, Kamarudin and Rohayu, Jusoh and Nuramira Fateha, Sukor and Herma Dina, Setiabudi (2017) Photodegradation of methylene blue using phyto-mediated synthesis of silver nanoparticles: effect of calcination treatment. In: 3rd International Conference on Green Chemical Engineering and Technology (3RD GCET 2017) , 7-8 November 2017 , Swiss-Garden Hotel Melaka, Malaysia. p. 1.. (Unpublished)
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46. Photodegradation of methylene blue using phyto-mediated synthesis of silver nanoparticles- effect of calcination treatment.pdf Download (73kB) | Preview |
Abstract
In this study, discrete Ag⁰ nanoparticles (10–30 nm) were synthesized by a simple electrochemical method in Cymbopogon nardus leaves extract as a medium. The leaves extract remarkably reduce the Ag⁰ ion to produce Ag⁰ nanoparticles without any agglomeration. Its crystallinity, morphology, and functional characteristics were analyzed by using X-ray diffractometer, transmission electron microscope, and Fourier-transform infrared spectrometer, respectively. The characterization results verified that Cymbopogon nardus leaves extract containing flavanoids plays an important role in reducing the Ag⁰ nanoparticles in the electrochemical cell. The activity of the synthesized Ag⁰ nanoparticles was tested on a photodegradation of methylene blue (MB). The calcined Ag⁰ nanoparticles give higher degradation percentage of MB (92%) as compared to the uncalcined Ag⁰, operating in pH 5, with a reaction time of 180 min, at 30°C, using 0.02 g L−1 of catalyst dosage and 10 mg L−1 of MB initial concentration. A reusability study showed that the catalyst was still stable after five subsequent reactions. The results provide strong evidence to support the potential use plant-based extracts to synthesize nano-sized photocatalyst that can be used to treat organic pollutants such as MB.
| Item Type: | Conference or Workshop Item (Lecture) |
|---|---|
| Uncontrolled Keywords: | Silver Nanoparticles; Cymbopogon Nardus; Electrochemical; Photodegradation; Methylene Blue |
| Subjects: | T Technology > TP Chemical technology |
| Faculty/Division: | Faculty of Chemical & Natural Resources Engineering |
| Depositing User: | Pn. Hazlinda Abd Rahman |
| Date Deposited: | 23 May 2018 02:47 |
| Last Modified: | 23 May 2018 02:47 |
| URI: | http://umpir.ump.edu.my/id/eprint/21104 |
| Download Statistic: | View Download Statistics |
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