Synthesis, characterization, and application of thio-salicylaldehyde schiff base complexes for Cr (VI) adsorption

Simranjeet Singh; Shweta Shekar; Sushant K Behera; Nabila Shehata; Nadeem A Khan; Joginder Singh; Praveen C Ramamurthy

doi:10.1016/j.isci.2024.110925

Synthesis, characterization, and application of thio-salicylaldehyde schiff base complexes for Cr (VI) adsorption

iScience. 2024 Sep 13;27(10):110925. doi: 10.1016/j.isci.2024.110925. eCollection 2024 Oct 18.

Authors

Simranjeet Singh¹, Shweta Shekar², Sushant K Behera², Nabila Shehata³, Nadeem A Khan⁴, Joginder Singh⁵, Praveen C Ramamurthy¹

Affiliations

¹ Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Science, Bangalore 560012, India.
² Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India.
³ Environmental Science and Industrial Development Department, Faculty of Postgraduate Studies for Advanced Sciences, Beni-Suef University, Beni-Suef, Egypt.
⁴ Interdisciplinary Research Center for Membranes and Water Security, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
⁵ Department of Botany, Nagaland University, HQRS: Lumami, Lumami, Nagaland 798627, India.

Abstract

This study investigates the effectiveness of a Schiff base derived from thio-carbohydrazide and salicylaldehyde as an adsorbent for Cr(VI) removal from wastewater. The Schiff base demonstrated excellent adsorption capacity and reusability, with high removal efficiency and rapid adsorption kinetics. The results were supported by theoretical density functional theory simulations, which revealed the enhanced dynamic nature of the Schiff base system for heavy metal adsorption. These findings highlight the potential of Schiff base complexes as sustainable and efficient adsorbents for industrial wastewater treatment.

Keywords: chemistry; materials science; natural sciences.