Analisis Pengaruh Rasio Komposisi Nanofiber PAN/CsPbBr3 Terhadap Performa Reduksi Fotokimia CO2

Hariko, Vanessa Olivia (2024) Analisis Pengaruh Rasio Komposisi Nanofiber PAN/CsPbBr3 Terhadap Performa Reduksi Fotokimia CO2. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Teknologi CO2 Capture and Utilization (CCU) untuk mengonversi produk kimia berharga merupakan teknologi pengurangan emisi yang menjanjikan. Salah satu metode CCU yang efektif, yaitu fotokimia, membutuhkan fotokatalis semikonduktor untuk menangkap energi foton. Dalam penelitian ini, perovskite CsPbBr3 dan polimer polyacrylonitrile digabungkan menjadi nanofiber dengan metode elektrospinning. Penelitian ini bertujuan untuk mengetahui morfologi dan performa fotokimia reduksi CO2 nanofiber terbaik dari empat rasio komposisi yang diterapkan, yaitu PAN/CsPbBr3 0,5:1; 1:1; 2:1; dan 3:1. Pengujian karakterisasi X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electrone Machine-Energy Dispersive Spectroscopy (SEM-EDS), dan Atomic Force Microscopy (AFM) dilakukan untuk menganalisis keberhasilan sintesis nanofiber PAN/CsPbBr3 yang murni tanpa pengotor, ukuran kristal, ukuran diameter nanofiber, dan persebaran nanopartikel CsPbBr3 pada nanofiber PAN/CsPbBr3. Sifat optik nanofiber PAN/CsPbBr3 diamati melalui pengujian Ultraviolet-Visible Spectrometry (UV-Vis) dan Photoluminescence Spectrometry (PL). Performa reduksi CO2 kemudian dianalisis melalui pengujian Cyclic Voltammetry (CV). Hasil SEM dan AFM menunjukkan bahwa penambahan komposisi PAN memperbesar diameter nanofiber secara signifikan dan membuat permukaan setiap helaian fiber semakin halus. Meskipun begitu, penambahan PAN tidak mempengaruhi band gap yang berada di antara 2,32 – 2,35 eV dan peak spektrum PL yang stabil di antara 518 – 522 nm. Selama 12 jam proses fotokimia reduksi CO2, variasi 0,5:1 memiliki peak reduksi CV yang sesuai untuk generasi CO dan H2. Bahkan pada variasi 1:1 dan 2:1 memiliki peak reduksi CV yang sesuai untuk konversi CO2 menjadi CH4, CO, dan H2
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CO2 Capture and Utilization (CCU) technology for converting valuable chemical products is a promising emission reduction technology. One effective CCU method, namely photochemistry, requires a semiconductor photocatalyst to capture photon energy. In this research, CsPbBr3 perovskite and polyacrylonitrile polymer were combined into nanofibers by electrospinning method. This research aims to determine the best morphology and photochemical performance of CO2 nanofiber reduction from the four composition ratios applied, namely PAN/CsPbBr3 0.5:1; 1:1; 2:1; and 3:1. X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electrone Machine-Energy Dispersive Spectroscopy (SEM-EDS), and Atomic Force Microscopy (AFM) characterization tests were carried out to analyze the success of the synthesis of pure PAN/CsPbBr3 nanofiber without impurities, crystal size, nanofiber diameter, and distribution of CsPbBr3 nanoparticles on PAN/CsPbBr3 nanofibers. The optical properties of PAN/CsPbBr3 nanofibers were observed through Ultraviolet-Visible Spectrometry (UV-Vis) and Photoluminescence Spectrometry (PL) testing. The CO2 reduction performance was then analyzed through Cyclic Voltammetry (CV) testing. SEM and AFM results show that the addition of PAN composition significantly increases the diameter of the nanofibers and makes the surface of each fiber strand smoother. However, the addition of PAN does not affect the band gap which is between 2.32 - 2.35 eV and the PL spectrum peak which is stable between 518 - 522 nm. During the 12 hour CO2 photochemical reduction process, a variation of 0.5:1 has a CV reduction peak that is suitable for CO and H2 generation. Even variations of 1:1 and 2:1 have CV reduction peaks that are suitable for converting CO2 to CH4, CO, and H2

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Fotokimia, Nanofiber, Perovskite CsPbBr3, Polyacrylonitrile, Reduksi CO2; Photochemistry, Nanofiber, Perovskite CsPbBr3, Polyacrylonitrile, CO2 Reduction
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA418.9.F5 Electrospinning. Nanofibers T Technology > TA Engineering (General). Civil engineering (General) > TA418.9 Composite materials. Laminated materials.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Vanessa Olivia Hariko
Date Deposited:	05 Feb 2024 03:02
Last Modified:	05 Feb 2024 03:02
URI:	http://repository.its.ac.id/id/eprint/105899

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