Sintesis Dan Karakterisasi Granul Sodium Alginat/ZSM-5 Yang Dilapisi Biobr-PVP Untuk Fotodegradasi Metilen Biru

Babgei, Ahmad Azzam (2025) Sintesis Dan Karakterisasi Granul Sodium Alginat/ZSM-5 Yang Dilapisi Biobr-PVP Untuk Fotodegradasi Metilen Biru. Other thesis, Institut Teknologi Sepuluh Nopember.

Text 5004211017_Undergraduate_Thesis.pdf - Accepted Version Restricted to Repository staff only Download (2MB) | Request a copy

Abstract

Industri tekstil menghasilkan limbah zat warna seperti metilen biru (MB) yang berbahaya bagi lingkungan dan kesehatan. Bismuth oxybromide (BiOBr) merupakan material fotokatalis potensial karena struktur yang berlapis dan celah pita sempit yang responsif terhadap cahaya tampak. Penelitian ini bertujuan untuk mengembangkan material BiOBr yang dimodifikasi dengan PVP sebagai agen pengarah terhadap morfologi BiOBr, yang dilapiskan pada permukaan Granul (Sodium Alginate/ZSM-5) agar kapasitas adsorpsi dan efisiensi degradasi metilen blue meningkat, serta dapat memudahkan proses pemisahan setelah reaksi berlangsung. Material Granul (SA/ZSM-5) dilapisi BiOBr-PVP disintesis melalui metode presipitasi pada material hanya Granul (SA/ZSM-5) melalu metode ionotropik. Material ini dikarakterisasi dengan FTIR, XRD, FESEM-EDX, dan uji fotodegradasi MB di bawah sinar UV-LED (365 nm). Spektra FTIR menunjukkan puncak serapan pada 514 cm-1 (Bi-O), 1280 cm-1 (C-N dari PVP), (1211, 796, 549 cm-1 dari ZSM-5) dan 1637 cm⁻¹ (gugus karboksil dari sodium alginat), mengonfirmasi keberadaan gugus fungsi dan interaksi antar komponen. Difraktogram XRD mengindikasikan adanya puncak kristalin khas ZSM-5 pada 2θ = 7.9, 8.8, 23.1°, dan BiOBr pada 2θ=10.9, 21.8, 32.3, 46.5, 57.2°, menunjukkan fase kristalin yang stabil tanpa pembentukan fase baru. Citra FESEM menunjukan morfologi granul SA/ZSM-5 yang seragam dan berpori, dengan BiOBr-PVP terdistribusi merata melapisi permukaannya. Hasil optimasi menunjukkan degradasi MB tertinggi 85,7% pada massa katalis BiOBr-PVP/SA/ZSM-5 0,2 g dan konsentrasi MB 20 ppm, lebih tinggi dibandingkan granul SA/ZSM-5 (51,1%). Peningkatan ini disebabkan sinergi antara luas permukaan aktif granul SA/ZSM-5, transfer muatan efektif dari BiOBr-PVP, dan penghambatan rekombinasi elektron-lubang. Material komposit ini menjanjikan untuk aplikasi pengolahan limbah tekstil berkelanjutan. Kata kunci: BiOBr, PVP, sodium alginat, ZSM-5, fotodegradasi, metilen biru. ===================================================================================================================================
The textile industry produces dye waste such as methylene blue (MB), which is harmful to the environment and human health. Bismuth oxybromide (BiOBr) is a potential photocatalytic material due to its layered structure and narrow bandgap that is responsive to visible light. This study aims to develop BiOBr material modified with PVP as a morphologic directing agent for BiOBr, coated onto the surface of Granules (Sodium Alginate/ZSM-5) to enhance adsorption capacity and methylene blue degradation efficiency, as well as facilitate separation after the reaction occurs. The BiOBr-PVP-coated Granule (SA/ZSM-5) material was synthesized via the precipitation method on the Granule (SA/ZSM-5) material alone using the ionotropic method. This material was characterized using FTIR, XRD, FESEM-EDX, and MB photodegradation testing under UV-LED light (365 nm). FTIR spectra showed characteristic absorption peaks at 514 cm-1 (Bi-O), 1280 cm-1 (C-N from PVP), (1211, 796, 549 cm -1 from ZSM-5), and 1637 cm⁻¹ (carboxyl group from sodium alginate), confirming the presence of functional groups and interactions between components. The XRD diffractogram indicates the presence of characteristic crystalline peaks of ZSM-5 at 2θ = 7.9, 8.8, 23.1°, and BiOBr at 2θ = 10.9, 21.8, 32.3, 46.5, 57.2°, indicating a stable crystalline phase without the formation of new phases. FESEM images show uniform porous morphology of SA/ZSM-5 granules, with BiOBr-PVP evenly distributed coating their surfaces. Optimization results show the highest MB degradation of 85.7% at a BiOBr-PVP/SA/ZSM-5 catalyst mass of 0.2 g and an MB concentration of 20 ppm, higher than SA/ZSM-5 granules (51.1%). This improvement is attributed to the synergy between active surface area of SA/ZSM-5 granules, effective charge transfer from BiOBr-PVP, and inhibition of electron-hole recombination. This composite material holds promise for sustainable textile waste treatment applications. Keywords: BiOBr, PVP, sodium alginate, ZSM-5, photodegradation, methylene blue

Item Type:	Thesis (Other)
Uncontrolled Keywords:	BiOBr, PVP, sodium alginat, ZSM-5, fotodegradasi,metilen biru, sodium alginate, photodegradation, methylene blue
Subjects:	T Technology > TD Environmental technology. Sanitary engineering > TD420 Water pollution T Technology > TD Environmental technology. Sanitary engineering > TD899 Waste control in special industries, plants, processes, etc T Technology > TP Chemical technology > TP155.7 Chemical processes. T Technology > TP Chemical technology > TP159.M6 Zeolites
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Chemistry > 47201-(S1) Undergraduate Thesis
Depositing User:	Ahmad Azzam Babgei
Date Deposited:	06 Aug 2025 03:50
Last Modified:	06 Aug 2025 03:50
URI:	http://repository.its.ac.id/id/eprint/127702

Actions (login required)

View Item