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Irhamni Irhamni
Universitas Sultan Ageng Tirtayasa, Indonesia
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Journal : Bulletin of Chemical Reaction Engineering

 1 
Tailoring Bandgap and Crystallinity of TiO₂ via Mg Doping for Enhanced DSSC Photoanode Performance Mursal, Mursal; Malahayati, Malahayati; Ismail, Ismail; Irhamni, Irhamni; Jalil, Zulkarnain
Bulletin of Chemical Reaction Engineering & Catalysis 2025: Just Accepted Manuscript and Article In Press 2025
Publisher : Masyarakat Katalis Indonesia - Indonesian Catalyst Society (MKICS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.9767/bcrec.20473

Abstract

The structural and optical properties of magnesium-doped titanium dioxide (Mg–TiO₂) nanocrystalline films were investigated for potential application as photoanodes in dye-sensitized solar cells (DSSCs). The films were synthesized via a sol-gel method using titanium(IV) isopropoxide and magnesium acetate as precursors. Mg doping concentrations ranging from 0 to 4 mol% were explored. The films were deposited onto glass substrates using the doctor blade technique and annealed at various temperatures. Characterization was carried out using X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDS), Fourier-transform infrared spectroscopy (FTIR), and UV–Vis spectroscopy. XRD analysis confirmed the formation of TiO₂, MgO, and MgTiO₃ phases, with a notable decrease in crystallite size as Mg content increased. The smallest crystallite size of 12.71 nm was obtained at 4 mol% Mg doping. SEM images revealed improved surface morphology and more uniform porosity in doped films. FTIR spectra indicated no significant changes in chemical bonding, while UV–Vis analysis showed a decrease in bandgap energy from 3.8 eV to 3.4 eV with Mg doping. These modifications suggest enhanced dye adsorption and reduced charge recombination, indicating the potential of Mg-doped TiO₂ films to improve DSSC performance.
Co-Authors A.A. Ketut Agung Cahyawan W Achmad Tohe Aini, Dian Arsy Amalia Amalia Ana Ramadhona Ashari, T Muhammad Assaat, Lusiani Dewi Burhanuddin AG Burhanuddin AG, Burhanuddin AG Burhanuddin AG, Burhanuddin AG Busriyanti Busriyanti, Busriyanti Chairul Fahmi Cut Yulvizar Elfiani Fayruza, Aida Zavirah Ghofur, Nahdah Arifatus Sholihah Hayatinupus, Windri Ismail Ismail Ismail, Muhd Zulkifli Julfi, Muhammad Juvitasari, Safira Kamil, Ridlo Inshofa Khair, Umul Khasairi, Moh. Kholisin Kholisin M. Syathibi Nawawi Maimunah, Aisyah Malahayati Malahayati Masykur, Masykur Misrahanum Misrahanum Moh. Fauzan Moh. Khasairi Muhammad Faisol Mursal Mursal Nisfah, Ulfa Asrifatun Nurul Murtadho Pertiwi, Ratu Mega Rahma tia, Rahma Ramadhani, Muhammad Fakhry Ratna Sari Siti Aisyah Robby Zidny Ruhayyah, Atika Salsabila, Unik Hanifah Solekha, Nuralia Annisatus Solfarina, Solfarina Sri Suyanta Sukmawati, Irma Wahib Dariyadi, Moch. Yarsina, Nova Yulian, Rika Wulan Yundari, Yundari Zaidiyah Zaidiyah Zainal Fauzi Zainuddin, Zainuddin Zulkarnain Jalil