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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 starch-resorcinol-formaldehyde (RF)-lithium triflate (LiTf) based biodegradable polymer electrolyte membrane was synthesized via the solution casting technique. The formation of RF crosslinks in the starch matrix was found to repress the starch’s crystallinity as indicated by the XRD data. Incorporation of the RF plasticizer improved the conductivity greatly, with the highest room-temperature conductivity recorded being 4.29 × 10−4 S cm−1 achieved by the starch:LiTf:RF (20 wt.%:20 wt.%:60 wt.%) composition. The enhancement in ionic conductivity was an implication of the increase in the polymeric amorphous region concurrent with the suppression of the starch’s crystallinity. Chemical complexation between the plasticizer, starch, and lithium salt components in the electrolyte was confirmed by FTIR spectra.
Vidhya Selvanathan; Mohd Hafidz Ruslan; Mohammod Aminuzzaman; Ghulam Muhammad; N. Amin; Kamaruzzaman Sopian; Akhtaruzzaman. Resorcinol-Formaldehyde (RF) as a Novel Plasticizer for Starch-Based Solid Biopolymer Electrolyte. Polymers 2020, 12, 2170 .
AMA StyleVidhya Selvanathan, Mohd Hafidz Ruslan, Mohammod Aminuzzaman, Ghulam Muhammad, N. Amin, Kamaruzzaman Sopian, Akhtaruzzaman. Resorcinol-Formaldehyde (RF) as a Novel Plasticizer for Starch-Based Solid Biopolymer Electrolyte. Polymers. 2020; 12 (9):2170.
Chicago/Turabian StyleVidhya Selvanathan; Mohd Hafidz Ruslan; Mohammod Aminuzzaman; Ghulam Muhammad; N. Amin; Kamaruzzaman Sopian; Akhtaruzzaman. 2020. "Resorcinol-Formaldehyde (RF) as a Novel Plasticizer for Starch-Based Solid Biopolymer Electrolyte." Polymers 12, no. 9: 2170.
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.
This work reports a green and environmentally benign method for synthesizing zinc oxide nanoparticles (ZnO NPs) using aqueous extract of dragon fruit (Hylocereus polyrhizus) peel biowaste as reducing and stabilizing agent. To understand the structural phase purity, morphology and size, green-synthesized ZnO NPs were characterized through various analytic techniques like XRD, FTIR, FESEM, TEM, EDX, XPS, UV–Vis, and Raman spectroscopy. The detailed characterizations confirmed that green-synthesized ZnO NPs are pure having spherical shape with an average size of 56 nm, well-crystalline, and possessing wurtzite hexagonal phase. The photocatalytic activity of the ZnO NPs has been investigated by carrying out the degradation of methylene blue (MB) dye as a model pollutant under direct sunlight illumination in open atmosphere and the photodegradation process was monitored by UV–Vis spectroscopy and liquid chromatography-mass spectrophotometry (LC-MS) technique. Owing to nano-size and high purity, the green-synthesized ZnO NPs showed an excellent photocatalytic performance.
Mohammod Aminuzzaman; Pei Sian Ng; Wee-Sheng Goh; Sayaka Ogawa; Akira Watanabe. Value-adding to dragon fruit (Hylocereus polyrhizus) peel biowaste: green synthesis of ZnO nanoparticles and their characterization. Inorganic and Nano-Metal Chemistry 2019, 49, 401 -411.
AMA StyleMohammod Aminuzzaman, Pei Sian Ng, Wee-Sheng Goh, Sayaka Ogawa, Akira Watanabe. Value-adding to dragon fruit (Hylocereus polyrhizus) peel biowaste: green synthesis of ZnO nanoparticles and their characterization. Inorganic and Nano-Metal Chemistry. 2019; 49 (11):401-411.
Chicago/Turabian StyleMohammod Aminuzzaman; Pei Sian Ng; Wee-Sheng Goh; Sayaka Ogawa; Akira Watanabe. 2019. "Value-adding to dragon fruit (Hylocereus polyrhizus) peel biowaste: green synthesis of ZnO nanoparticles and their characterization." Inorganic and Nano-Metal Chemistry 49, no. 11: 401-411.
We reported a facile, green and eco-friendly approach for the synthesis of zinc oxide nanoparticles (ZnO NPs) using aqueous extract of Garcinia mangostana (G. mangostana) fruit pericarp as reducing agent as well as capping agent. Biosynthesized ZnO NPs were characterized by various analytical tools using X-ray diffraction, Fourier transform infrared spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy and UV–Vis spectroscopy. The results showed that ZnO NPs synthesized by aqueous extract of G. mangostana fruit pericarp with high purity, mostly spherical in shape with an average size of 21 nm. The photocatalytic activity of biosynthesized ZnO NPs was evaluated by carrying out the degradation of malachite green dye under solar irradiation. The extent of MG dye degradation was monitored spectrophotometrically by measuring absorbance at its characteristics \(\lambda _{\max }\) value of 615 nm. Degradation products were detected using liquid chromatography–mass spectrophotometry technique. The biosynthesized ZnO NPs showed an excellent photocatalyst performance due to the small size and high purity.
Mohammod Aminuzzaman; Lim Poh Ying; Wee-Shenog Goh; Akira Watanabe. Green synthesis of zinc oxide nanoparticles using aqueous extract of Garcinia mangostana fruit pericarp and their photocatalytic activity. Bulletin of Materials Science 2018, 41, 50 .
AMA StyleMohammod Aminuzzaman, Lim Poh Ying, Wee-Shenog Goh, Akira Watanabe. Green synthesis of zinc oxide nanoparticles using aqueous extract of Garcinia mangostana fruit pericarp and their photocatalytic activity. Bulletin of Materials Science. 2018; 41 (2):50.
Chicago/Turabian StyleMohammod Aminuzzaman; Lim Poh Ying; Wee-Shenog Goh; Akira Watanabe. 2018. "Green synthesis of zinc oxide nanoparticles using aqueous extract of Garcinia mangostana fruit pericarp and their photocatalytic activity." Bulletin of Materials Science 41, no. 2: 50.
Copper oxide nanoparticles (CuO NPs) are interesting class of materials having multifunctional properties with promising applications in the areas of catalysts, gas sensors,batteries, magnetic storage media, solar energy, superconductors etc. Thus synthesis of CuO NPs has attracted tremendous interest to scientists and researchers Herein, we reported a green and simple method for biosynthesizing CuO NPs using banana peel extract as reducing and stabilizing agent. XRD, EDX, FE-SEM, FTIR have been used for characterization of biosynthesized CuO NPs. The results indicating that the CuO NPs synthesized by banana peel extract have high purity and the average particles size is 60 nm. The photocatalytic activity of the CuO NPs has been investigated by degradation of Congo red (CR) dye under solar irradiation. The extent of CR dye degradation by CuO NPs is monitored by using a UV-visible spectrophotometer. Due to the smaller size and high purity, the biosynthesized CuO NPs showed an excellent photocatlytic activity.
Mohammod Aminuzzaman; Leong Mei Kei; Wong Hong Liang. Green synthesis of copper oxide (CuO) nanoparticles using banana peel extract and their photocatalytic activities. AIP Conference Proceedings 2017, 1 .
AMA StyleMohammod Aminuzzaman, Leong Mei Kei, Wong Hong Liang. Green synthesis of copper oxide (CuO) nanoparticles using banana peel extract and their photocatalytic activities. AIP Conference Proceedings. 2017; ():1.
Chicago/Turabian StyleMohammod Aminuzzaman; Leong Mei Kei; Wong Hong Liang. 2017. "Green synthesis of copper oxide (CuO) nanoparticles using banana peel extract and their photocatalytic activities." AIP Conference Proceedings , no. : 1.
This paper describes fabrication of conductive, highly adhesive silver (Ag) micropatterns on transparent flexible double-decker-shaped polysilsesquioxane (DDPSQ) film by a laser direct writing technique using a precursor film prepared from liquid-dispersed Ag nanoparticles. The laser-written Ag micropatterns have been characterized by optical microscopy, field-emission scanning electron microscopy, surface profilometry, and resistivity measurements. The line width of the Ag micropatterns can be flexibly controlled by changing the objective lens magnification and laser spot size. Using a ×100 objective lens and laser energy density of 170.50 kW/cm2, Ag micropatterns with line width of about 4 μm have been achieved. The Ag micropatterns show excellent adherence to the DDPSQ surface as evaluated by Scotch-tape test. The resistivity of the Ag micropatterns has been determined to be 4.1 × 10−6 Ω cm using the two-point probe method, being almost comparable to that of bulk Ag (1.6 × 10−6 Ω cm). Thus, high-quality, narrow, homogeneous Ag microlines with high conductivity and adhesion can be produced under optimized laser scanning conditions.
Mohammod Aminuzzaman; Akira Watanabe; Tokuji Miyashita. Laser Direct Writing of Conductive Silver Micropatterns on Transparent Flexible Double-Decker-Shaped Polysilsesquioxane Film Using Silver Nanoparticle Ink. Journal of Electronic Materials 2015, 44, 4811 -4818.
AMA StyleMohammod Aminuzzaman, Akira Watanabe, Tokuji Miyashita. Laser Direct Writing of Conductive Silver Micropatterns on Transparent Flexible Double-Decker-Shaped Polysilsesquioxane Film Using Silver Nanoparticle Ink. Journal of Electronic Materials. 2015; 44 (12):4811-4818.
Chicago/Turabian StyleMohammod Aminuzzaman; Akira Watanabe; Tokuji Miyashita. 2015. "Laser Direct Writing of Conductive Silver Micropatterns on Transparent Flexible Double-Decker-Shaped Polysilsesquioxane Film Using Silver Nanoparticle Ink." Journal of Electronic Materials 44, no. 12: 4811-4818.
Mohammod Aminuzzaman; Masaya Mitsuishi; Tokuji Miyashita. Surface modification of a flexible polyimide film using a reactive fluorinated polymer nanosheet. Thin Solid Films 2010, 519, 974 -977.
AMA StyleMohammod Aminuzzaman, Masaya Mitsuishi, Tokuji Miyashita. Surface modification of a flexible polyimide film using a reactive fluorinated polymer nanosheet. Thin Solid Films. 2010; 519 (3):974-977.
Chicago/Turabian StyleMohammod Aminuzzaman; Masaya Mitsuishi; Tokuji Miyashita. 2010. "Surface modification of a flexible polyimide film using a reactive fluorinated polymer nanosheet." Thin Solid Films 519, no. 3: 974-977.
The requirement for microwiring technology by a wet process has significantly increased recently toward the achievement of printable and flexible electronics. We have developed the metal microwiring with a resolution higher than 1 μm by the laser direct writing technique using Ag and Cu nano-particle-dispersed films as precursors. The technique was applied to the microwiring on a flexible and transparent polymer film. The metallization is caused in a micro-region by focused laser beam, which reduces the thermal damage of the flexible polymer substrate during the metallization process. The laser direct writing technique is based on the efficient and fast conversion of photon energy to thermal energy by direct excitation of the plasmon absorption of a metal nano-particle, which provides Cu microwiring with a low resistivity owing to the inhibition of the surface oxidation of the Cu nano-particle.
Akira Watanabe; Mohammod Aminuzzaman; Tokuji Miyashita. Submicron writing by laser irradiation on metal nano-particle dispersed films toward flexible electronics. Laser-based Micro- and Nanopackaging and Assembly III 2009, 7202, 720206 .
AMA StyleAkira Watanabe, Mohammod Aminuzzaman, Tokuji Miyashita. Submicron writing by laser irradiation on metal nano-particle dispersed films toward flexible electronics. Laser-based Micro- and Nanopackaging and Assembly III. 2009; 7202 ():720206.
Chicago/Turabian StyleAkira Watanabe; Mohammod Aminuzzaman; Tokuji Miyashita. 2009. "Submicron writing by laser irradiation on metal nano-particle dispersed films toward flexible electronics." Laser-based Micro- and Nanopackaging and Assembly III 7202, no. : 720206.
Mohammod Aminuzzaman; Yuko Kado; Masaya Mitsuishi; Tokuji Miyashita. Frictional properties of an immobilized fluorinated polymer nanosheet. Thin Solid Films 2007, 516, 67 -71.
AMA StyleMohammod Aminuzzaman, Yuko Kado, Masaya Mitsuishi, Tokuji Miyashita. Frictional properties of an immobilized fluorinated polymer nanosheet. Thin Solid Films. 2007; 516 (1):67-71.
Chicago/Turabian StyleMohammod Aminuzzaman; Yuko Kado; Masaya Mitsuishi; Tokuji Miyashita. 2007. "Frictional properties of an immobilized fluorinated polymer nanosheet." Thin Solid Films 516, no. 1: 67-71.
The Langmuir-Blodgett(LB)technique was utilized to control surface properties of narrow microchannel walls at the molecular scale. Fluorinated amphiphilic polymer(pC7F15MAA)was synthesized and its ultrathin films were prepared by the LB technique. Microchannel was fabricated with glass substrates. A laminar flow of water in hydrophilic and hydrophobic microchannels was monitored in situ using an optical microscope equipped with a digital CCD camera. Shape of meniscus was clearly monitored with 250 ms time-resolution. The fluorinated polymer LB film can be a good candidate to control water motion in the microchannel.
Masaya Mitsuishi; Masahiko Mihashi; Mohammod Aminuzzaman; Tokuji Miyashita. Surface Modification of Microchannels with Fluorinated Polymer Langmuir-Blodgett Films. Molecular Crystals and Liquid Crystals 2004, 424, 273 -277.
AMA StyleMasaya Mitsuishi, Masahiko Mihashi, Mohammod Aminuzzaman, Tokuji Miyashita. Surface Modification of Microchannels with Fluorinated Polymer Langmuir-Blodgett Films. Molecular Crystals and Liquid Crystals. 2004; 424 (1):273-277.
Chicago/Turabian StyleMasaya Mitsuishi; Masahiko Mihashi; Mohammod Aminuzzaman; Tokuji Miyashita. 2004. "Surface Modification of Microchannels with Fluorinated Polymer Langmuir-Blodgett Films." Molecular Crystals and Liquid Crystals 424, no. 1: 273-277.