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Journal : Bulletin of Chemical Reaction Engineering

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 Abdul Malik Ahmad, Fadila Akbar, Habibi Akhyar Akhyar Anandar, Supriadi Rizki Apriansyah, M. Irfan Armiani, Trizaurah Asmaran AS, Asmaran Auliani, Delina Azhar Amsal Azkia, Sela Azkia Barus, Hipridanto Ebtaria Nadeak, Ebtaria Elfaladonna, Febie Elidar Sari Eriawati Eriawati Faisal Faisal Fathiah Fathiah Fathurrahman Fathurrahman Fauzah Nur Aksa Fauzan Amsal, Alfi Fitri Maghfirah Gami, Amelia Ramadany Putri Ghufran Ibnu Yasa Hanim, Nafisah Hasan Basri Hasibuan , Dahlia Haviza Ananda, Cut Heni Pujiastuti Herinawati, Herinawati Heriyana Heriyana Ilyas Ilyas Irhamni Irhamni Ismail Ismail Jalil, Ivon Jayawarsa, A.A. Ketut Johari Johari Karlina, Azrin Widya Khairan AR Khairunnas, Khairunnas M Alfaruqi Mahdi Syukri Maisura, Mira Malia, Rezqi Manfarisyah, Manfarisyah Mardhatillah, Fitria Mayani, Nurhikma Muhammad Noval Muhammad Nur Muhammad Rizal Fachri Muhammad Wakhid Musthofa Muhibuddin Muhibuddin, Muhibuddin Mukhlis Mukhlis Mursal Mursal Mursyidin Mursyidin Mustika, Darma Mutiara, Suci Nabilah, Nura Nardo, Lenno Nst, Ummiyatul Tazkia Rodina Nur Jumriatunnisah, Nur Putri, Dea Nirwanda Qadri, Fitrah Rais, Amien Refnas Rezeki, Sri Rahayu Rika Sadariawati Rita Nengsih Romi Asmara Saleha, Ella Annisa Sastro, Marlia Shanty Komalasari, Shanty Siregar, Ramdhan Halid Sofyan Jafar Supadmi, Tri Syahwandi, Syahwandi Tengku Hartati Tunnur, Layla Utami, Rika Sri Wati, Ade Sukma Wijaya, Salsabila Putri Winanda, Dika Permata Yana, Syaifuddin Yanti, Rahma Yulia Yulia Yusup, Mohamad Zulkarnain Jalil