Update Artikelilmiah: 44830

GHINATANITHA HAQQU HARYADINARU

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Abstrak (Bhs. Indonesia)

Degradasi Methylene Blue dilakukan melalui metode fotokatalisis dengan material BiVO4/g-C3N4 dan bantuan sinar visibel. Analisis karakteristik dan aktivitas fotokatalitik dilakukan melalui variasi konsentrasi g-C3N4, waktu degradasi, dan pH Methylene Blue. Pengukuran laju kinetika reaksi dan mekanisme degradasi fotokatalitik juga dilakukan dalam penelitian ini. Karakterisasi material dilakukan melalui pengamatan data XRD, SEM, dan UV-Vis DRS. Berdasarkan data yang diperoleh, sampel BiVO4/g-C3N4 memiliki sifat fotokatalitik dan adsorpsi yang optimal pada sampel B(1:3)dengan pH 7 dan waktu degradasi 150 menit, serta dapat mendegradasi Methylene Blue sebesar 94,14% dengan laju kinetika fotokatalitik yang mengikuti orde satu dan spesi *OH yang paling berperan dalam mekanisme degradasi. Struktur Kristal BiVO4/g-C3N4 berupa heterojunction yang terbentuk antara BiVO4monoklinik dan g-C3N4 heksagonal, dengan ukuran kristal sebesar 10,16nm, nilai energi celah pita berada di range 2,16eV, dan morfologi yang terbentuk adalah gabungan lembaran-lembaran dan aglomerasi partikel kristal bersudut.

Abtrak (Bhs. Inggris)

Methylene Blue degradation was carried out through photocatalysis method with BiVO4/g-C3N4 material and visible light assistance. Character characteristics and photocatalytic activity were analyzed through variations in g-C3N4 concentration, degradation time, and pH of Methylene Blue. This study also measured the reaction kinetics rate and photocatalytic degradation mechanism. Material characterization was conducted by observing XRD, SEM, and UV-Vis DRS data. Based on the data, the BiVO4/g-C3N4 sample has optimal photocatalytic and adsorption properties in sample B (1:3) with pH 7 and 150 minutes of degradation time. It can degrade Methylene Blue by 94.14% with the rate of photocatalytic kinetics that follows the first order and *OH species that play the most role in the degradation mechanism. The crystal structure of BiVO4/g-C3N4 is a heterojunction formed between monoclinic BiVO4 and hexagonal g-C3N4, with a crystal size of 10.16nm, the band gap energy value is in the range of 2.16eV, and the morphology formed is a combination of sheets and rod-like.

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