Lailia, Sheila Rahmah (2026) Sintesis Dan Karakterisasi Ti3C2Tx MXene Melalui Metode In Situ HF Dengan Variasi Waktu Etsa Dan Konsentrasi LiF. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
MXene merupakan kelas baru nanomaterial dua dimensi yang memiliki potensi besar dalam berbagai bidang, termasuk aplikasi biomedis, karena sifat konduktivitas tinggi, serta luas permukaan besar. Salah satu metode sintesis MXene yang umum digunakan adalah metode etsa berbasis asam, khususnya melalui pembentukan HF secara in situ menggunakan lithium fluoride (LiF) dan asam klorida (HCl), yang dinilai lebih aman dibandingkan penggunaan HF pekat secara langsung. Penelitian ini bertujuan untuk menganalisis pengaruh penambahan variasi konsentrasi LiF (0,06 g/mL; 0,09 g /mL; 0,12 g/mL) dan waktu etsa (18 jam, 24 jam, 30 jam) terhadap karakteristik Ti₃C₂Tₓ MXene yang disintesis melalui metode in situ HF berbasis LiF–HCl. Proses sintesis dilakukan dengan mengetsa fase MAX Ti₃AlC₂ menggunakan larutan LiF–HCl pada variasi waktu reaksi dan konsentrasi LiF tertentu. Karakterisasi material dilakukan menggunakan X-Ray Diffraction (XRD), Scanning Electron Microscopy–Energy Dispersive Spectroscopy (SEM–EDS), dan Spektroskopi Raman. Hasil XRD menunjukkan terbentuknya fase Ti₃C₂Tₓ yang ditandai dengan munculnya puncak (002) pada sudut difraksi rendah, meskipun masih terdeteksi sisa fase Ti₃AlC₂. Hasil SEM menunjukkan perkembangan struktur berlapis setelah proses etsa, sedangkan EDX mengonfirmasi penurunan kandungan Al serta keberadaan unsur F dan O pada seluruh sampel. Spektrum Raman menunjukkan pita vibrasi lebar pada daerah yang diasosiasikan dengan gugus terminasi –O, –OH, dan –F berdasarkan literatur. Variasi massa LiF dan waktu etsa memengaruhi karakteristik Ti₃C₂Tₓ, namun tidak menunjukkan hubungan linier karena dipengaruhi oleh interkalasi ion Li⁺, pembentukan gugus terminasi, dan restacking. Kondisi sintesis terbaik pada penelitian ini diperoleh pada penggunaan 0,12 g/mL LiF dan waktu etsa 24 jam, yang menghasilkan struktur berlapis lebih berkembang dan nilai d-spacing terbesar.
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MXene is a new class of two-dimensional nanomaterials with great potential for various applications, including biomedical applications, owing to its high electrical conductivity and large specific surface area. One of the most widely used synthesis methods is the acid-based etching process, particularly the in situ hydrofluoric acid (HF) method generated from lithium fluoride (LiF) and hydrochloric acid (HCl), which is considered safer than the direct use of concentrated HF. This study aimed to investigate the effects of LiF concentration variations (0.06 g/mL, 0.09 g/mL, and 0.12 g/mL) and etching time (18, 24, and 30 h) on the characteristics of Ti₃C₂Tₓ MXene synthesized via the LiF–HCl-based in situ HF method. The synthesis was carried out by selectively etching the Ti₃AlC₂ MAX phase using a LiF–HCl solution under different LiF concentrations and etching durations. Material characterization was performed using X-ray Diffraction (XRD), Scanning Electron Microscopy–Energy Dispersive X-ray Spectroscopy (SEM–EDS), and Raman spectroscopy. The XRD results confirmed the formation of the Ti₃C₂Tₓ phase, indicated by the appearance of the (002) diffraction peak at a lower diffraction angle, although residual Ti₃AlC₂ phase was still detected. SEM observations revealed the development of a layered morphology after the etching process, while EDS analysis confirmed the reduction of Al content and the presence of F and O elements in all samples. The Raman spectra exhibited broad vibrational bands in regions associated with –O, –OH, and –F surface terminations, as reported in the literature. Variations in LiF concentration and etching time influenced the characteristics of Ti₃C₂Tₓ; however, the changes were not linearly correlated due to the combined effects of Li⁺ intercalation, surface termination formation, and restacking. The optimum synthesis condition in this study was obtained using 0.12 g/mL LiF and an etching time of 24 h, resulting in a more developed layered structure and the largest d-spacing value.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | In Situ HF, Ti3AlC2 MAX phase, Ti3C2Tx MXene, Waktu etsa, In situ HF, Ti₃AlC₂ MAX phase, Ti₃C₂Tₓ MXene, etching time. |
| Subjects: | T Technology > TP Chemical technology > TP248 Nanogels. Nanoparticles. T Technology > TP Chemical technology > TP248.3 Biochemical engineering. Bioprocess engineering |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Sheila Rahmah Lailia |
| Date Deposited: | 21 Jul 2026 10:25 |
| Last Modified: | 21 Jul 2026 10:25 |
| URI: | http://repository.its.ac.id/id/eprint/136108 |
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- Sintesis Dan Karakterisasi Ti3C2Tx MXene Melalui Metode In Situ HF Dengan Variasi Waktu Etsa Dan Konsentrasi LiF. (deposited 21 Jul 2026 10:25) [Currently Displayed]
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