Optimasi Pengaruh Rasio Komposisi Nanofiber PAN/CsPbBr3 terhadap Performa Reduksi CO2

Musyafa, Mohammad Abimanyu (2026) Optimasi Pengaruh Rasio Komposisi Nanofiber PAN/CsPbBr3 terhadap Performa Reduksi CO2. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Teknologi Carbon Capture, Utilization, and Storage (CCUS) berbasis fotokimia memerlukan material fotokatalis semikonduktor yang efektif untuk mereduksi CO2. Penelitian ini bertujuan untuk menganalisis pengaruh rasio komposisi CsPbBr3 dan polyacrylonitrile (PAN) terhadap performa nanofiber PAN/CsPbBr3 dalam proses fotoreduksi CO2, serta menganalisis pengaruh rasio komposisi tersebut terhadap pelepasan logam berat Pb pada media H2O. Perovskite CsPbBr3 disintesis menggunakan metode ligand-assisted reprecipitation (LARP) pada suhu ruang, kemudian dikompositkan dengan PAN untuk membentuk nanofiber melalui metode elektrospinning. Karakterisasi struktur dan morfologi dilakukan menggunakan X-Ray Diffraction (XRD) dan Field Emission Scanning Electron Microscope (FESEM), sedangkan sifat optik dianalisis menggunakan UV-Vis dan Photoluminescence (PL). Performa reduksi CO₂ dievaluasi menggunakan Cyclic Voltammetry (CV) dan pengujian performa produk gas, sementara potensi pelepasan logam berat Pb dianalisis menggunakan Inductively Coupled Plasma (ICP). Hasil FESEM menunjukkan bahwa penambahan CsPbBr3 cenderung meningkatkan diameter nanofiber, meskipun peningkatan tersebut tidak signifikan. Variasi rasio komposisi CsPbBr3 dan PAN memengaruhi nilai bandgap nanofiber yang berada pada rentang 2,00-2,29 eV, dengan puncak emisi PL yang stabil pada panjang gelombang 501 dan 505 nm. Kedua variasi nanofiber menunjukkan aktivitas reduksi CO2 yang ditandai dengan munculnya puncak reduksi pada kurva CV dan divalidasi melalui pembentukan gas H2, C2H6, dan CO pada pengujian performa. Namun demikian, penambahan CsPbBr3 pada nanofiber PAN juga meningkatkan pelepasan Pb ke dalam media H2O (aquades) setelah proses fotoreduksi.
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Photochemical-based Carbon Capture, Utilization, and Storage (CCUS) technology requires effective semiconductor photocatalyst materials for CO2 reduction. This study aims to analyze the effect of the CsPbBr3 to polyacrylonitrile (PAN) composition ratio on the performance of PAN/CsPbBr3 nanofibers for photochemical CO2 reduction, and investigate the influence of the composition ratio on the release of Pb heavy metal into an H2O medium. CsPbBr3 perovskite was synthesized using the ligand-assisted reprecipitation (LARP) method at room temperature and subsequently composited with PAN to form nanofibers via the electrospinning technique. Structural and morphological characterizations were carried out using X-ray Diffraction (XRD) and Field Emission Scanning Electron Microscopy (FESEM), while optical properties were analyzed using UV-Vis spectroscopy and Photoluminescence (PL). The CO2 reduction performance was evaluated by Cyclic Voltammetry (CV) and gas product performance tests, whereas the potential release of Pb was assessed using Inductively Coupled Plasma (ICP) analysis. FESEM results indicate that the incorporation of CsPbBr3 tends to increase the nanofiber diameter, although the increase is not significant. Variations in the CsPbBr3/PAN composition ratio influence the nanofiber bandgap, which ranges from 2.00 to 2.29 eV, with stable PL emission peaks at 501 and 505 nm. Both nanofiber variations exhibit CO2 reduction activity, as evidenced by the appearance of reduction peaks in the CV curves and confirmed by the formation of H2, C2H6, and CO gases in the performance tests. However, the incorporation of CsPbBr3 also leads to an increased release of Pb into the H2O (distilled water) medium after the photoreduction process.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	fotokimia, nanofiber, perovskite CsPbBr3, polyacrylonitrile, reduksi CO2, CO2 reduction, nanofiber, perovskite CsPbBr3, photochemical, polyacrylonitrile
Subjects:	Q Science > QD Chemistry Q Science > QD Chemistry > QD1 Oxidation-reduction reaction. Q Science > QD Chemistry > QD115 Electrochemical analysis Q Science > QD Chemistry > QD117 Absorption Q Science > QD Chemistry > QD716 Photocatalysis.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Mohammad Abimanyu Musyafa
Date Deposited:	27 Jan 2026 02:31
Last Modified:	27 Jan 2026 02:31
URI:	http://repository.its.ac.id/id/eprint/130574

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