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In recent years, the green chemistry based-approach for the synthesis of nanoparticles has shown tremendous promise as an alternative to the costly and environmentally unfriendly chemically synthesized nanoparticles. In this study, copper oxide nanoparticles (CuO NPs) were synthesized through a green approach using the water extract of papaya (Carica papaya L.) peel biowaste as reducing as well as stabilizing agents, and copper (II) nitrate trihydrate salt as a precursor. The structural properties, crystallinity, purity, morphology, and the chemical composition of as-synthesized CuO NPs were analyzed using different analytical methods. The analytical results revealed that the synthesized CuO was observed as spherical-like in particles with measured sizes ranging from 85–140 nm and has monoclinic crystalline phase with good purity. The Fourier transform infrared (FTIR) spectroscopic results confirmed the formation of the Cu-O bond through the involvement of the potential functional groups of biomolecules in papaya peel extract. Regarding photocatalytic activity, the green-synthesized CuO NPs were employed as a photocatalyst for the degradation of palm oil mill effluent (POME) beneath the ultraviolet (UV) light and results showed 66% degradation of the POME was achieved after 3 h exposure to UV irradiation. The phytotoxicity experiment using mung bean (Vigna radiata L.) seed also showed a reduction of toxicity after photodegradation.
You-Kang Phang; Mohammod Aminuzzaman; Akhtaruzzaman; Ghulam Muhammad; Sayaka Ogawa; Akira Watanabe; Lai-Hock Tey. Green Synthesis and Characterization of CuO Nanoparticles Derived from Papaya Peel Extract for the Photocatalytic Degradation of Palm Oil Mill Effluent (POME). Sustainability 2021, 13, 796 .
AMA StyleYou-Kang Phang, Mohammod Aminuzzaman, Akhtaruzzaman, Ghulam Muhammad, Sayaka Ogawa, Akira Watanabe, Lai-Hock Tey. Green Synthesis and Characterization of CuO Nanoparticles Derived from Papaya Peel Extract for the Photocatalytic Degradation of Palm Oil Mill Effluent (POME). Sustainability. 2021; 13 (2):796.
Chicago/Turabian StyleYou-Kang Phang; Mohammod Aminuzzaman; Akhtaruzzaman; Ghulam Muhammad; Sayaka Ogawa; Akira Watanabe; Lai-Hock Tey. 2021. "Green Synthesis and Characterization of CuO Nanoparticles Derived from Papaya Peel Extract for the Photocatalytic Degradation of Palm Oil Mill Effluent (POME)." Sustainability 13, no. 2: 796.
A simple, inexpensive, and eco-friendly route has been demonstrated for synthesizing spherical NiO nanoparticles (NiO NPs) with a size range between 20 and 90 nm using aqueous extract of soursop (Annona muricata L.) fruit peel green waste which plays the role of reducing and stabilizing agent during the synthesis. The formation, morphology, structure and other physicochemical properties of the resulting NiO NPs were characterized by various experimental techniques such as X-ray diffraction (XRD), energy dispersive X-ray (EDX) analysis, Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), ultraviolet–visible (UV–vis) spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The photocatalytic performance of the prepared NiO NPs was assessed toward the photodegradation of crystal violet (CV) dye as a model pollutant under sunlight illumination. The measurement of chemical oxygen demand (COD) values verified the degree mineralization of CV dye. The results show that nearly 99.0% of CV pollutant was photodegraded at 105 min of illumination, making it a promising candidate for wastewater treatment.
Mohammod Aminuzzaman; Chan-Yong Chong; Wee-Sheng Goh; You-Kang Phang; Tey Lai-Hock; Swee-Yong Chee; Akhtaruzzaman; Sayaka Ogawa; Akira Watanabe. Biosynthesis of NiO Nanoparticles Using Soursop (Annona muricata L.) Fruit Peel Green Waste and Their Photocatalytic Performance on Crystal Violet Dye. Journal of Cluster Science 2020, 32, 949 -958.
AMA StyleMohammod Aminuzzaman, Chan-Yong Chong, Wee-Sheng Goh, You-Kang Phang, Tey Lai-Hock, Swee-Yong Chee, Akhtaruzzaman, Sayaka Ogawa, Akira Watanabe. Biosynthesis of NiO Nanoparticles Using Soursop (Annona muricata L.) Fruit Peel Green Waste and Their Photocatalytic Performance on Crystal Violet Dye. Journal of Cluster Science. 2020; 32 (4):949-958.
Chicago/Turabian StyleMohammod Aminuzzaman; Chan-Yong Chong; Wee-Sheng Goh; You-Kang Phang; Tey Lai-Hock; Swee-Yong Chee; Akhtaruzzaman; Sayaka Ogawa; Akira Watanabe. 2020. "Biosynthesis of NiO Nanoparticles Using Soursop (Annona muricata L.) Fruit Peel Green Waste and Their Photocatalytic Performance on Crystal Violet Dye." Journal of Cluster Science 32, no. 4: 949-958.