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Photocatalytic Effect of Zinc Oxide on The Degradation of Crystal Violet Dye Waste Water under Visible Light

Year: 2025

Type: conference-paper

Abstract: The textile industry is a major contributor to water pollution. Crystal Violet (CV) is a widely used cationic dye; however, it is toxic, difficult to degrade, and potentially carcinogenic, posing a significant threat to both aquatic ecosystems and human health. Zinc oxide (ZnO) is a semiconductor with a wide band gap, high chemical stability, and the ability to generate oxidative radicals capable of degrading complex organic compounds. This study aimed to examine the photocatalytic effect of ZnO on the photodegradation of Crystal Violet in a visible light-based reactor system. ZnO was synthesized using the sol-gel precipitation method, characterized using BET and a Particle Size Analyzer (PSA), and then tested for its photocatalytic activity. The test results showed that ZnO synthesized by a simple process has the potential to be an effective photocatalyst for sustainable textile wastewater treatment. Degradation CV using ZnO under 6 hours of visible light conditions could reach up to 70%.

Source: RSF Conference Series Engineering and Technology

DOI: 10.31098/cset.v4i1.993

Authors: Renung Reningtyas, Retno Ringgani, Mahreni Mahreni, Hafiz Muhammad Ghulam Akbar, Alifia Faza Adzkia Praptomo, Dina Asrifah

Institution: Universitas Pembangunan Nasional Veteran Yogyakarta

Language: English

Topic: Advanced Photocatalysis Techniques

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDGs: Clean water and sanitation, Responsible consumption and production

Open Access status: hybrid

OpenAlex ID: W4415204449

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