Tracking a Decade of Progress in Bi₂O₃/ZnO Photocatalysts for Wastewater Dye Degradation and Environmental Remediation: A Bibliometric Analysis (2015-2025)

Water pollution caused by various industries, including textiles, leather, paper, cosmetics, and food processing, poses significant environmental threats. One of the most concerning pollutants in industrial wastewater is dyes, which often contains hazardous levels of chromium and other toxic substances, making it harmful to both human health and aquatic ecosystems due to its non-biodegradable nature. To address this, researchers have explored dyes degradation techniques using advanced oxidation processes (AOPs), with bismuth/zinc oxide (Bi 2 O 3 /ZnO) photocatalysts showing promise. This study provides a bibliometric analysis of research trends on Bi2O3/ZnO photocatalysts for dyes degradation from 2015 to 2025, based on data from the Scopus database. A total of 40 publications were analyzed, highlighting key research trends, leading countries and institutions, and future directions for advancing photocatalytic dyes degradation and environmental remediation.