Catalytic reduction of 4-nitrophenol using CuO@Na2Ti(PO4)2⋅H2O

Bishenka H Mahaulpatha; Lalinda Palliyaguru; Savidya Jayawardene; Masaru Shimomura; Jonas Baltrusaitis; Pradeep M Jayaweera

doi:10.1080/10934529.2022.2031842

Catalytic reduction of 4-nitrophenol using CuO@Na₂Ti(PO₄)₂⋅H₂O

J Environ Sci Health A Tox Hazard Subst Environ Eng. 2022;57(1):65-79. doi: 10.1080/10934529.2022.2031842. Epub 2022 Jan 31.

Authors

Bishenka H Mahaulpatha¹, Lalinda Palliyaguru¹, Savidya Jayawardene², Masaru Shimomura², Jonas Baltrusaitis³, Pradeep M Jayaweera¹

Affiliations

¹ Department of Chemistry, University of Sri Jayewardenepura, Nugegoda, Sri Lanka.
² Department of Engineering, Graduate School of Integrated Science and Technology, Shizuoka University, Hamamatsu, Shizuok, Japan.
³ Department of Chemical and Biomolecular Engineering, Lehigh University, Pennsylvania, USA.

PMID: 35094655
DOI: 10.1080/10934529.2022.2031842

Abstract

This article presents the synthesis, property characterization and catalytic application of CuO-supported disodium titanium phosphate, (CuO@Na₂Ti(PO₄)₂⋅H₂O) for the reduction of industrial pollutant 4-nitrophenol (4-NP). A simple hydrothermal route was developed to synthesize CuO@Na₂Ti(PO₄)₂⋅H₂O catalyst (CuO@Na₂TiP) from beach sand ilmenite. The prepared CuO@Na₂TiP was characterized using X-ray diffraction, scanning electron microscopy, energy dispersive X-ray analysis, X-ray photoelectron spectroscopy, and nitrogen adsorption-desorption isotherms. The catalyst 12 wt.% CuO@Na₂TiP showed the fastest reduction kinetics for 4-NP.

Keywords: 4-nitrophenol; catalytic reduction; cupric oxide; sodium titanium phosphate.