Effect of Cu Doping on ZnO Nanoparticles as a Photocatalyst for the Removal of Organic Wastewater

• Published in: Bioinorganic chemistry and applications Vol. 2022; no. 1; p. 9459886
• Main Authors: Khalid, Awais, Ahmad, Pervaiz, Khan, Abdulhameed, Muhammad, Saleh, Khandaker, Mayeen Uddin, Alam, Md. Mottahir, Asim, Mohd, Din, Israf Ud, Chaudhary, Ratiram G., Kumar, Dileep, Sharma, Rohit, Faruque, Mohammad Rashed Iqbal, Emran, Talha Bin
• Format: Journal Article
• Language: English
• Published: Egypt Hindawi 2022; John Wiley & Sons, Inc; Hindawi Limited
• Subjects: Catalytic activity; Copper; Crystal structure; Dyes; Efficiency; Investigations; Methylene blue; Morphology; Nanoparticles; Photocatalysis; Photodegradation; Pollutants; Purification; Saudi Arabia; Sewage; Synthesis; Wastewater; Wastewater treatment; Water pollution; Zinc oxide; Zinc oxides; Saudi Arabia
• ISSN: 1565-3633; 1687-479X
• DOI: 10.1155/2022/9459886

Environmental problems with chemical and biological water pollution have become a major concern for society. Providing people with safe and affordable water is a grand challenge of the 21st century. The study investigates the photocatalytic degradation capabilities of hydrothermally prepared pure and Cu-doped ZnO nanoparticles (NPs) for the elimination of dye pollutants. A simple, cost-effective hydrothermal process is employed to synthesize the Cu-doped ZnO NPs. The photocatalytic dye degradation activity of the synthesized Cu-doped ZnO NPs is tested by using methylene blue (MB) dye. In addition, the parameters that affect photodegradation efficiency, such as catalyst concentration, starting potential of hydrogen (pH), and dye concentration, were also assessed. The dye degradation is found to be directly proportional to the irradiation time, as 94% of the MB dye is degraded in 2 hrs. Similarly, the dye degradation shows an inverse relation to the MB dye concentration, as the degradation reduced from 94% to 20% when the MB concentration increases from 5 ppm to 80 ppm. The synthesized cost-effective and environmentally friendly Cu-doped ZnO NPs exhibit improved photocatalytic activity against MB dye and can therefore be employed in wastewater treatment materials.