The Use of Rice Husk Silica in Modified Zinc Oxide Photocatalysts to Reduce Chromium Concentration. Jurnal Kimia Valensi, [S. l.], v. 6, n. 1, p. 90–95, 2020. DOI: 10.15408/jkv.v6i1.12324. Disponível em: https://journal.uinjkt.ac.id/valensi/article/view/12324. Acesso em: 26 oct. 2025.