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Review: Characterization of Optical and Structural Properties of Carbon Nanodots (CNDs) from Biomass Waste by Microwave Method Ima Putriana; Nenni Mona Aruan; Reffany Choiru Riskiarna; Nur Aini Fauziyah; Arum Sinda Santika
Faraday: Journal of Fundamental Physics, Research, and Applied Science Vol. 1 No. 2 (2025): Faraday: Journal of Fundamental Physics, Research, and Applied Science
Publisher : Universitas Pembangunan Nasional "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/faraday.v1i2.14

Abstract

This review focuses on examining the synthesis and characterization of Carbon Nanodots (CNDs) from the utilization of Tandan Kosong Kelapa Sawit (TKKS) using the microwave method as an environmentally friendly approach. The resulting CNDs were characterized for their optical and structural properties to evaluate their potential application in the field of biosensors. The synthesis process involves carbonizing TKKS at 500℃ for 3 hours, followed by activation using a microwave at 450 Watts for 15 minutes. UV-Vis characterization shows an absorption peak at 280 nm, which indicates n-π* (C=O) and π-π* (C=C). Meanwhile, FTIR characterization aims to determine the presence of the carbonyl C=O functional group at 1990,98 cm-1 and the aromatic C=C bond at 1416,2 cm-1. The CNDs from TKKS exhibit photoluminescent properties and surface functional groupss that enhance adsorption performance and chemical reactivity. This research offers an efficient and sustainable method for synthesizing CNDs, while also being a breakthrough in utilizing biomass wate, particularly TKKS. The findings have the potential for developing carbon materials in environmental and energi applications.
STUDI KOMPARASI SERAPAN DAN GUGUS FUNGSI DARI CARBON NANO DOTS (CNDS) TERDOPING FECL3 DARI TANDAN KOSONG KELAPA SAWIT (TKKS) Ima Putriana; Nailul Hasan; Nur Aini Fauziyah
Inovasi Fisika Indonesia Vol. 15 No. 2 (2026): Vol 15 No 2
Publisher : Prodi Fisika FMIPA Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/ifi.v15n2.p182-191

Abstract

Abstrak Carbon Nano Dots (CNDs) merupakan material nanokarbon yang memiliki ukuran <10 nm yang memiliki sifat optik menarik serta memiliki potensi pada berbagai bidang seperti sensor dan bioimaging. Penelitian ini bertujuan untuk mensitentis CNDs dari limbah biomassa Tandan Kosong Kelapa Swait (TKKS) dan kulit semangka menggunakan metode microwave dengan penambahan urea sebagai agen pasivasi nitrogen serta penambahan  sebagai modifikasi permukaan untuk mempengaruhi sifat material optik. Karakterisasi dilakukan menggunakan UV-Vis dan Fourier Tranform Inframerah (FTIR). Hasil UV-Vis menunjukkan puncak serapan pada rentang 290 – 300 nm yang berkaitan dengan transisi  dari somain karbon  terkonjugasi. Sampel berbasis kulit semangka meunjukkan intensitas serapan yang lebih tinggi dibandingkan TKKS yang mengindikasikan pembentukan domain karbon yang lebih baik. Analisis FTIR identifikasi gugud fungsi O-H, C=C, dan Fe-O, serta pita baru pada 400-600  yang mengonfirmasi keberhasilan doping . Hasil penelitian ini menunjukkan bahwa biomassa dapat dimanfaatkan sebagai prekusor ramah lingkungan untuk sintesis CNDs dan modifikasi menggunakan urea serta  yang berpotensi mempengaruhi struktur permukaan dan respon material optik.   Abstract Carbon Nano Dots (CNDs) are carbon nanomaterials with a size <10 nm that possess interesting optical properties and have potential in various fields such as sensors and bioimaging. This research aims to synthesize Carbon Nano Dots (CNDs) from the biomass of Empty Fruit Bunches of Oil Palm (TKKS) and watermelon rind using the microwave method with the addition of urea as a nitrogen passivation agent and the addition  as a surface modifier to influence the optical properties of the material. Characterization was performed using UV-Vis and Fourier Transform Infrared (FTIR). The UV-Vis result showed an absorption peak in the range of 290 – 300 nm, which is related to the  transition of conjugad  carbon domains. Watermelon rind-based sampels showed higher absorption intensity compared to TKKS, indicating better formation of carbon domains. FTIR analysis identified functional groups O-H, C=C, and Fe-O, as well as a new band at 400-600  that confirmed the successful doping of . The result of this study indicate that biomass can be utilized as an environmentally friendly precursor for the synthesis of CNDs and modified using urea and , which has the potential to affect the surface structure and optical response of the material.