ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Photocatalytic degradation of Sudan black B dye by using synthesized SnO₂ nanoparticles as a catalyst: factorial design, kinetic and isotherm models

Muhammad Farooque Lanjwani, Mustafa Tuzen, and Muhammad Yar Khuhawar

Chemistry Department, Faculty of Science and Arts, Tokat Gaziosmanpasa University, Tokat, Turkey

E-mail: mfarooquechemist@yahoo.com

Received: 15 August 2023  Accepted: 19 March 2024

Abstract:

The SnO₂ was synthesized by precipitation method via tin chloride pentahydrate complexation with diethyldithiocarbamate then, calcined at temperatures 450, 600 and 750 °C and utilized for degradation of Sudan black B (SBB) dye. The calcination temperature 600 °C exhibited better degradation capability. Three light sources like visible, mercury and fluorescent were applied and fluorescent light exposed highest degradation of SBB dye. Degradation of SBB reached 90% with dosage of catalyst 15 mg at neutral pH 7 in 100 min. The 20 mg L⁻¹ concentration of SBB dye was optimized for degradation but the degradation decreased at increased concentration of the dye. Synthesized SnO₂ nanoparticles was characterized by SEM, XRD, DLS, EDX, zeta potential and FTIR to know their particles size, surface charge, morphology, structure and elemental composition of prepared nanoparticles. The SBB dye degradation followed pseudo second order kinetic model and Langmuir isotherm model. The impacts of factors were studied through factorial design using 18 experiments run, and interactions among different parameters were noted.

Keywords: Photocatalytic degradation; Sudan black B; SnO2 nanoparticles; Factorial design; Kinetic and isotherm models

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-024-03431-4

Chemical Papers 78 (8) 4813–4826 (2024)