Research Trends in the Application of Bi2O3/ZnO Photocatalysts for the Degradation of Dyes in Wastewater: A Bibliometric Analysis (2015-2025)
Mohammad Arifin (a,d,e), Heri Sutanto (b,e*), Hadiyanto (a,c), Ilham Alkian (a,e)

a) Doctoral Program of Environmental Science, School of Postgraduate, Diponegoro University, Semarang-Indonesia 50275
b) Department of Physics, Faculty of Science and Mathematics, Diponegoro University, Semarang-Indonesia 50275
c) Department of Chemical Engineering, Faculty of Engineering, Diponegoro University, Semarang-Indonesia 50275
d) Sinar Cendekia Institute of Teacher Training and Education, Tangerang Selatan-Indonesia 15310
e) Smart Materials Research Center (SMARC), Diponegoro University, Semarang-Indonesia 50275

Abstract

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 dye, 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 dye degradation techniques using advanced oxidation processes (AOPs), with bismuth/zinc oxide (Bi2O3/ZnO) photocatalysts showing promise. This study provides a bibliometric analysis of research trends on Bi2O3/ZnO photocatalysts for dye 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 dye degradation.

Keywords: bibliometric analysis, Bi2O3/ZnO, dye degradation, water pollution

Topic: Material Physics