CD Skripsi

Sintesis Material High Entropy Alloy Co-Cr-Al-Fe-Ni Melalui Teknik Mechanical Alloying Untuk Aplikasi Sebagai Katalis Degradasi Pewarna Rhodamin B

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SUMMARY
High Entropy Alloy (HEA) is a mixture of metallic alloys consisting of five or more
elements with individual element concentrations ranging from 5 to 35% atomic.
The characteristics of HEA, such as lattice distortion originating from crystal
defects and chemical composition effects, make it a promising material for catalyst
development. This research aims to synthesize HEA catalysts by combining 5
metallic elements (Co-Cr-Al-Fe-Ni) through the mechanical alloying process for
the degradation of rhodamine B dye. HEA catalysts with a mass ratio of 20% for
each element were synthesized via milling for 60 hours using 1 wt% stearic acid
and calcination at 400°C in an inert Argon gas flow. The synthesized HEA catalysts
were characterized using Scanning Electron Microscopy-Energy Dispersive X-ray
Spectroscopy (SEM-EDS) to analyze the surface structure and distribution of metal
components, as well as X-Ray Diffraction (XRD) instrument to analyze the
crystallinity and crystal phases formed. The results showed that the material surface
exhibited a spherical shape with uneven distribution of metal components, yet still
met the requirements as an HEA material based on SEM-EDS analysis. The
crystallinity level was measured at 98.23% and formed cubic crystals with Face
Centered Cubic (FCC) and Body Centered Cubic (BCC) phases according to XRD
analysis. The HEA catalyst was applied in the degradation of rhodamine B dye with
variations in pH, catalyst dosage, and degradation time at an initial rhodamine B
concentration of 10 ppm. The degradation of rhodamine B was performed under
initial solution conditions at pH 7. The optimal result for the degradation of
rhodamine B using the HEA catalyst with the photo-Fenton method was achieved
at pH 2, a catalyst dosage of 1/4% g/mL, with a degradation percentage of 98.1%
and a remaining concentration of 0.1883 ppm. In conclusion, this research
successfully synthesized Co-Cr-Al-Fe-Ni HEA catalysts through mechanical
alloying and demonstrated their effectiveness in degrading rhodamine B dye.

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1903155255

Penerbit

Pekanabru : Universitas Riau - FMIPA - Kimia., 2023

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1903155255

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

PUJA

Versi lain/terkait

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