Jurnal
Enhanced Photocatalytic Degradation of Methyl OrangeUsing N-Doped Carbon Quantum Dots/TiO₂ NanocompositeDerived from Orange Peel
Jurnal Bahan Alam Terbarukan · Vol. 15 No. 1 (2026) · hlm. 42–53
- ISSN
- 2407-2370, 2303-0623
- Terbit
- 2026-08-21
- Penerbit
- Universitas Negeri Semarang
- Bahasa
- eng
Abstrak
The release of azo dyes such as Methyl Orange (MO) from the textile industry poses serious environmental problems due to their toxic, stable, and difficult-to-degrade properties. Conventional treatment methods such as adsorption, coagulation, and chemical oxidation have not been able to effectively degrade dyes, so a more efficient and environmentally friendly alternative approach is needed. Photocatalysis technology is a potential solution because it can mineralize organic compounds into harmless products. However, conventional photocatalysts such as TiO2 NPs have limited activity in visible light due to their large band gap and high electron-hole recombination rate. This study aims to improve the photocatalytic performance of TiO2 NPs through the integration of nitrogen-doped carbon quantum dots (NCQDs) synthesized from orange peel waste using a one-step hydrothermal carbonization method, then composited with TiO2 NPs through a low-temperature hydrothermal reaction. Characterization was performed using SEM and SEM-EDX to analyze the morphology and elemental composition. Photocatalytic activity was tested against MO degradation under UV irradiation using a UV-Vis spectrophotometer. The results showed that the NCQDs/TiO2 composite had a homogeneous morphology and strong chemical interaction between NCQDs and TiO2 NPs. Degradation efficiency reached 32.5% in 90 minutes, higher than pure TiO2 NPs by 2.5%, with an increase in the reaction rate constant from 2.81×10⁻⁴ to 4.37×10⁻³ min⁻¹ and a decrease in half-life from 41.1 h to 2.65 h. Thus, the NCQDs/TiO2 nanocomposite based on orange peel has potential as a sustainable photocatalyst for the treatment of MO.
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| Rekan penulis | Organisasi | Artikel bersama |
|---|---|---|
| Zuhriyan Ash Shiddieqy Bahlawan | Afiliasi tidak diketahui | 3 |
| Irene Nindita Pradnya | Afiliasi tidak diketahui | 2 |
| Kharisma Ardhani Nur Pratiwi | Afiliasi tidak diketahui | 2 |
| Indrasukma Permanadewi | Afiliasi tidak diketahui | 2 |
| Rizma Stevviani | Afiliasi tidak diketahui | 2 |
| Kakalia Putri Auralita | Afiliasi tidak diketahui | 1 |
| Achmad Wikandaru | Afiliasi tidak diketahui | 1 |
| Daffa Nur Muhammad | Afiliasi tidak diketahui | 1 |
| Mochammad Choiril Muna | Afiliasi tidak diketahui | 1 |
| Satria Agung Saputra | Afiliasi tidak diketahui | 1 |
| Astrilia Damayanti | Afiliasi tidak diketahui | 1 |
| Megawati Megawati | Afiliasi tidak diketahui | 1 |
| Maharani Kusumaningrum | Afiliasi tidak diketahui | 1 |
| Nadya Alfa Cahaya Imani | Afiliasi tidak diketahui | 1 |
| Ramavi Akbar Akhsanul Fitrah | Afiliasi tidak diketahui | 1 |
| Harsya Grezdipa Pratama | Afiliasi tidak diketahui | 1 |
| Ayasha Maharani | Afiliasi tidak diketahui | 1 |
| Mochamad Choiril Muna | Afiliasi tidak diketahui | 1 |
| Naila Aulia Diena | Afiliasi tidak diketahui | 1 |
| F. Widhi Mahatmanti | Afiliasi tidak diketahui | 1 |
| Wara Dyah Pita Rengga | Afiliasi tidak diketahui | 1 |
| Safna Rahma Wati | Afiliasi tidak diketahui | 1 |
| Berliana Putri Rahmalia | Afiliasi tidak diketahui | 1 |
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