Bunga Nurkhalifah; Vera Pangni Fahriani; Sarah Dampang; Muhammad Fahmi Hakim; Siti Nurhayati. Improvement of TiO2 Performance With 10% Cu–TiO2/BiVO4 Heterojunction Composite Using Sonication in Photoelectrochemical Water Splitting. J. Energy Mater. Instrum. Technol. 2025, 6, 209-219.