Sintesis Karbon Dot Terdoping N dan S Berbahan Dasar Limbah Organik sebagai Sensor Pendeteksi Ion Logam Berat

Gunawan, Fitriya Puspitasari (2025) Sintesis Karbon Dot Terdoping N dan S Berbahan Dasar Limbah Organik sebagai Sensor Pendeteksi Ion Logam Berat. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penelitian mengenai karbon dot berbahan dasar limbah organik yang diaplikasikan sebagai sensor pendeteksi ion logam berat telah dilakukan. Karbon dot disintesis dari limbah organik yaitu ampas tebu dan kulit pisang. Sintesis dilakukan dengan cara pirolisis dengan memvariasikan suhu, yaitu 300°C, 360°C, dan 420°C. Selain itu juga dilakukan variasi terhadap waktu yaitu, 80, 120, dan 160 menit. Produk karbon dot yang telah disintesis kemudian dipelajari dengan beberapa karakterisasi yaitu karakterisasi absorbansi, fluoresens, dan FTIR. Karakterisasi absorbansi menghasilkan daerah serapan pada panjang gelombang sekitar 207 nm, 230 nm, dan 245 nm untuk karbon dot dari ampas tebu sedangkan untuk karbon dot dari kulit pisang pada panjang gelombang sekitar 294 - 340 nm. Intensitas Fluoresens diketahui dari karakterisasi fotoluminens yang menghasilkan daerah serapan pada panjang gelombang 487 - 490 nm. Waktu dan suhu sintesis memengaruhi ukuran karbon dot yang terbentuk. Ukuran sampel karbon dot memiliki tren meningkat seiring bertambahnya waktu sintesis dan menurun seiring bertambahnya suhu sintesis. Dua jenis karbon dot yang telah disintesis dipilih berdasarkan karakteristik yang hampir sama untuk dibandingkan berdasarkan performansi sebagai sensor ion logam Pb2+ dan Fe3+ dengan variasi konsentrasi 0.1M – 0.5M. Diperoleh hasil bahwa CDKP berpotensi sebagai pendeteksi ion besi dibuktikan dengan nilai regresi yang tinggi yaitu R^2=0.9587, sedangkan CDAT berpotensi sebagai pendeteksi ion timbal dengan nilai R^2=0.9730.
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Research on carbon dots made from organic waste applied as heavy metal ion detection sensors has been conducted. Carbon dots are synthesized from organic waste, there are bagasse and banana peels. Synthesis is carried out by pyrolysis by varying the temperature, there are 300°C, 360°C, and 420°C. In addition, variations in time are also carried out, there are 80, 120, and 160 minutes. Carbon dot products that have been synthesized are then studied with several characterizations, namely absorbance, fluorescence, and FTIR characterization. Absorbance characterization produces absorption areas at wavelengths around 207 nm, 230 nm, and 245 nm for carbon dot from bagasse while for carbon dot from banana peel at wavelengths around 294 - 340 nm. Fluorescence intensity is known from photoluminescence characterization which produces absorption areas at wavelengths of 487 - 490 nm. Synthesis time and temperature affect the size of the carbon dots formed. The size of the carbon dot sample has an increasing trend with increasing synthesis time and decreasing with increasing synthesis temperature. Two types of synthesized carbon dots were selected based on similar characteristics to be compared based on their performance as Pb2+ and Fe3+ metal ion sensors with concentration variations of 0.1M - 0.5M. It was found that CDKP has the potential to detect iron ions as evidenced by the high regression value of R^2=0.9587, while CDAT has the potential to detect lead ions with a value of R^2=0.9730.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	sensor karbon dot, limbah ampas tebu, limbah kulit pisang, metode pirolisis, ion logam beraT carbon dot sensor, bagasse waste, banana peel waste, pyrolysis method, heavy metal ions
Subjects:	Q Science Q Science > Q Science (General) Q Science > QC Physics Q Science > QC Physics > QC475 Photoluminescence
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Fitriya Puspitasari Gunawan
Date Deposited:	06 Feb 2025 07:49
Last Modified:	06 Feb 2025 07:49
URI:	http://repository.its.ac.id/id/eprint/118460

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