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15 results on '"Petchsang, Nattasamon"'

2. UV-Induced Room-Temperature Ethylene Sensors Based on Ag-Decorated ZnO Nanoflowers for Fruit Ripeness Monitoring.

Author

Jaisutti, Rawat, Khemphet, Siwaporn, Pudwat, Sayan, Petchsang, Nattasamon, Yong-Hoon Kim, Osotchan, Tanakorn, and Zhigang Zhu

Abstract

Monitoring of plant hormone ethylene plays a crucial role in managing the growth and development of plants, especially in the ripening of fruits and the opening of flowers. Here, a highly sensitive ethylene sensor is demonstrated using silver nanoparticle (Ag NP)-decorated zinc oxide nanoflowers (ZnO NFs), prepared through a facile and low-temperature chemical synthesis. The results indicate that Ag NP decoration on the surface of ZnO NFs improved the ethylene sensing properties under ultraviolet (UV) illumination. With an optimized UV light intensity of 5 mW/cm², the sensing response to 40 ppm of ethylene gas increased from 13.27% to 52.83%. The sensors exhibit a strong linear response to ethylene gas within the range of 10-70 ppm, with a low detection limit of 5 ppm. Moreover, the Ag-decorated ZnO NFs sensors demonstrated good repeatability, excellent long-term stability, and high selectivity toward ethylene gas. The sensing mechanism is attributed to the catalytic effectiveness and localized surface plasmon resonance of Ag NPs. These results suggest that UV-induced Ag-decorated ZnO NFs are promising for practical application in fruit ripening monitoring for supply chain management. [ABSTRACT FROM AUTHOR]

Published
2024
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7. Molybdenum Carbamate Nanosheets as a New Class of Potential Phase Change Materials

Author

Zhukovskyi, Maksym, primary, Plashnitsa, Vladimir, additional, Petchsang, Nattasamon, additional, Ruth, Anthony, additional, Bajpai, Anshumaan, additional, Vietmeyer, Felix, additional, Wang, Yuanxing, additional, Brennan, Michael, additional, Pang, Yunsong, additional, Werellapatha, Kalpani, additional, Bunker, Bruce, additional, Chattopadhyay, Soma, additional, Luo, Tengfei, additional, Janko, Boldizsar, additional, Fay, Patrick, additional, and Kuno, Masaru, additional

Published
2017
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15. Controlled Synthesis of Compositionally Tunable Ternary PbSexS1–xas Well as Binary PbSe and PbS Nanowires

Author

Onicha, Anthony C., Petchsang, Nattasamon, Kosel, Thomas H., and Kuno, Masaru

Abstract

High-quality compositionally tunable ternary PbSexS1–x(x= 0.23, 0.39, 0.49, 0.68, and 0.90) nanowires (NWs) and their binary analogues have been grown using solution–liquid–solid growth with lead(II) diethyldithiocarbamate, Pb(S2CNEt2)2, and lead(II) imido(bis(selenodiisopropylphosphinate)), Pb((SePiPr2)2N)2, as single-source precursors. The alloyed nature of PbSexS1–xwires was confirmed using ensemble X-ray diffraction and energy dispersive X-ray spectroscopy (EDXS). Single NW EDXS line scans taken along the length of individual wires show no compositional gradients. NW compositions were independently confirmed using inductively coupled plasma atomic emission spectroscopy. Slight stoichiometric deviations occur but never exceed 13.3% of the expected composition, based on the amount of introduced precursor. In all cases, resulting nanowires have been characterized using transmission electron microscopy. Mean diameters are between 9 and 15 nm with accompanying lengths that range from 4 to 10 μm. Associated selected area electron diffraction patterns indicate that the PbSexS1–x, PbSe, and PbS NWs all possess the same ⟨002⟩ growth direction, with diffraction patterns consistent with an underlying rock salt crystal structure.

Published
2012
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