Nukunudompanich, Methawee

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Nukunudompanich, Methawee
Alternative Name
Nukunudompanich, Meethawee
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Email
methawee.nu@kmitl.ac.th

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    Item type:Publication,
    The Perceptive Classification of the Wastes for Recycling and Composting for Sustainable Waste Management
    (2024-01-01)
    Leeabai, Nattapon
    ;
    Nukunudompanich, Methawee
    ;
    Areeprasert, Chinnathan
    The problem with municipal solid waste (MSW) in Thailand necessitates the well-planned MSW management is important. The perceptive classification of waste is the effective tool to design MSW management and waste separation campaign. It was found that the perceptive classification of the waste was significantly graded in order to the characteristics of the waste. The certain numbers of the wastes were high perceptive classification to the target category. Thus, the perceptual classification of these wastes did not prevent their separation into the designated waste bin. On the other hand, careful attention was required to increase the perception classification of aluminum foil as recyclable waste. The perceptive classification of recyclable waste on aluminum foil was too low, and it was around 37.66%. Misclassification may result from a misunderstanding of the waste type. In addition, some wastes were hardly segregated to a specific category, and there were depending on the implementation process in the MSW management system. For example, the perceptive classification of tissue paper as compostable wastes was low. To design the composting process including the input of tissue paper, the campaign to improve the perceptive classification on tissue papers was recommended. In contrast, the implementation of composting without the input of tissue paper did not need the campaign to modify the perceptive classification on tissue papers. Therefore, the significant findings of this study will be the designing tools to enable the effective and sustainability MSW management.
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    Item type:Publication,
    Electrospinning of SnO2-TiO2nanofiber/nanorod composites for uses as electron transport layers in flexible perovskite solar cells
    (2024-05-17)
    Nukunudompanich, Methawee
    ;
    Roongraung, Kamonchanok
    ;
    Sanglee, Kanyanee
    ;
    Lekkla, Wassana
    ;
    Chuangchote, Surawut
    In perovskite solar cells (PSCs), the most commonly used electron transport layers (ETLs) are titanium dioxide (TiO2) and tin oxide (SnO2). The problem with SnO2 is that its conduction band does not match that of perovskites, while TiO2's photocatalytic nature can destroy perovskite materials. Additionally, these ETLs are typically applied in the form of nanoparticles. Electrospinning was used to produce composite nanofibers or nanorods of SnO2-TiO2 to improve the photovoltaic performance of flexible PSCs, which are required for flexible electronic devices. SnO2-TiO2 nanofibers or NRs as ETLs assist perovskites in harvesting light, separating excitons, extracting and collecting electrons, blocking holes, and preventing perovskites from decomposing and forming defects. PSCs containing SnO2-TiO2 nanoparticles have been produced. From the J-V characteristics of flexible-PSCs, the use of SnO2-TiO2 nanofibers improved the power conversion efficiency of the solar cells. A higher current density was obtained. This occurs because the 1D structure allows for more freely moving electrons. Comparing SnO2 nanoparticles and TiO2 nanofibers, an SnO2-TiO2 layer provides superior charge mobility and helps improve strength of the bonding at the perovskite/ITO interface. It is superior to SnO2 NPs and TiO2 nanofibers in reducing surface recombination.