Development of composite catalyst containing renewable biochar blended with zinc oxide and copper diphenyl amine for visible light photocatalytic degradation of methylene blue - Saif, Aroosha; Rizvi, Syeda Itrat; Shaukat, Zarneen; Saif, Mamoona; Tabassum, Sobia; Khalid, Rizwan; Javed, Fahad; Rebouh, Nazih Y.; Hassan, Faiza; Zaman, Qamar uz (Frontiers in Sustainable Food Systems, 2025)