Catalytic Decomposition of Azo Dye Using ZnO in Sunlight

Ram Babu Pachwarya (Motilal Nehru College, University of Delhi, New Delhi, India)
Euis Nurul Hidayah (2Department of Environmental Engineering, University of Pembangunan Nasional Veteran Jawa Timur, Surabaya, Indonesia)
Dr. Rekha Kashyap (Motilal Nehru College, University of Delhi, New Delhi, India)
A.L. Ramanathan (School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, India)
R.C. Meena (Department of Chemistry Jai Narayanwas University, Jodhpur, Rajasthan)
Pramod Kumar Meena (Department of Chemistry, Govt. Bangur College Didwana (Nagaur) Rajasthan - 341303, India)
Syadzadhiya Q.Z. Nisa (Department of Environmental Engineering, University of Pembangunan Nasional Veteran Jawa Timur, Surabaya, Indonesia)

International Journal of Eco-Innovation in Science and Engineering (IJEISE)
Vol. 3 No. 1 (2022): IJEISE

The degradation of azo is a challenge for environmentalists. Catalytic decomposition of azo dyes by ZnO heterogeneous photocatalysis and the influence of operating parameters such as light intensity, temperature, amount of ZnO catalyst, solution pH and amount of pollutants. It has been observed that ZnO catalysts is quite capable of removing azo dyes in the presence of sunlight. We can use the same catalyst over and over, and it works well every time. We recovered 99% clear water within a few hours of exposure to sunlight.