A. A. Hatma, L. Hakim, T. Suprayogi, and J. W. Manik, “Synthesis and Characterization of Nanocomposites TiO2-ZnO With Co-Precipitation Method For The Purification of Sei Gohong Peat Water Palangka Raya”, vkj, vol. 4, no. 1, pp. 897–910, Aug. 2026.