Evaluasi Pengaruh Rasio Komposisi Nanofiber PAN/CsPbBr3 yang dikalsinasi terhadap kinerja reduksi CO2

Muna, Muhammad Tafrikhul (2026) Evaluasi Pengaruh Rasio Komposisi Nanofiber PAN/CsPbBr3 yang dikalsinasi terhadap kinerja reduksi CO2. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Peningkatan emisi gas karbon dioksida (CO2) menuntut pengembangan material yang tidak hanya mampu mengadsorpsi, tetapi juga mereduksi CO2 secara efektif dan stabil. Penelitian ini bertujuan untuk mengevaluasi pengaruh rasio komposisi nanofiber PAN/CsPbBr3 terhadap kinerja fotoreduksi CO2 dan stabilitas lingkungan setelah proses kalsinasi. Nanofiber PAN/CsPbBr3 disintesis menggunakan metode electrospinning dengan dua variasi rasio PAN:CsPbBr3, yaitu 1:1 dan 2:3, kemudian dikalsinasi pada suhu 255 °C selama 30 menit untuk meningkatkan kristalinitas dan kestabilan material. Karakterisasi struktur dan sifat optik dilakukan menggunakan XRD, FE-SEM, UV–Vis, dan photoluminescence (PL). Kinerja fotoreduksi CO2 dianalisis melalui cyclic voltammetry dan uji deteksi gas dalam sistem reaktor berair, sedangkan aspek keamanan lingkungan dievaluasi menggunakan pengujian inductively coupled plasma (ICP) untuk mengukur pelepasan ion Pb. Hasil penelitian menunjukkan bahwa kedua komposisi mempertahankan fase kristalin CsPbBr3 setelah kalsinasi, dengan kristalinitas dan kemampuan serap cahaya yang lebih tinggi pada rasio 2:3. Sebaliknya, rasio 1:1 menunjukkan intensitas emisi PL yang lebih besar, mengindikasikan rekombinasi muatan yang lebih dominan. Uji performa fotoreduksi menunjukkan bahwa metode injeksi CO2 langsung ke nanofiber menghasilkan aktivitas tertinggi, di mana komposisi 2:3 mampu menghasilkan CH4 sejak tahap awal reaksi, sedangkan komposisi 1:1 lebih selektif menghasilkan H2 dan CO. Pengujian ICP mengonfirmasi bahwa matriks PAN secara signifikan menekan pelepasan Pb ke dalam media berair. Dengan demikian, rasio 2:3 unggul dalam aktivitas fotoreduksi CO2, sementara rasio 1:1 lebih stabil secara lingkungan.
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Increased carbon dioxide (CO2) emissions require the development of materials that are not only capable of adsorption, but also effectively and stably reduce CO2. This study aims to evaluate the effect of the PAN/CsPbBr3 nanofiber composition ratio on CO2 photoreduction performance and environmental stability after the calcination process. PAN/CsPbBr3 nanofibers were synthesized using the electrospinning method with two variations of the PAN:CsPbBr3 ratio, namely 1:1 and 2:3, then calcined at 255 °C for 30 minutes to increase the crystallinity and stability of the material. Structural and optical characterization was performed using XRD, FE-SEM, UV–Vis, and photoluminescence (PL). CO2 photoreduction performance was analyzed through cyclic voltammetry and gas detection tests in an aqueous reactor system, while environmental safety aspects were evaluated using inductively coupled plasma (ICP) testing to measure Pb ion release. The results showed that both compositions retained the crystalline phase of CsPbBr3 after calcination, with higher crystallinity and light absorption at a 2:3 ratio. Conversely, the 1:1 ratio showed greater PL emission intensity, indicating more dominant charge recombination. Photoreduction performance tests show that the method of direct CO2 injection into nanofibers produces the highest activity, where the 2:3 composition is capable of producing CH4 from the early stages of the reaction, while the 1:1 composition is more selective in producing H2 and CO. ICP testing confirms that the PAN matrix significantly suppresses the release of Pb into the aqueous medium. Thus, the 2:3 ratio excels in CO2 photoreduction activity, while the 1:1 ratio is more environmentally stable.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	kalsinasi, perovskite CsPbBr3, reduksi CO2 calcination, CO2 reduction, Perovskite CsPbBr3
Subjects:	Q Science Q Science > QD Chemistry Q Science > QD Chemistry > QD1 Oxidation-reduction reaction. 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:	Muhammad Tafrikhul Muna
Date Deposited:	27 Jan 2026 07:45
Last Modified:	27 Jan 2026 07:45
URI:	http://repository.its.ac.id/id/eprint/130758

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