Ultrasound-assisted synthesis of metal organic framework for the photocatalytic reduction of 4-nitrophenol under direct sunlight

Melvin S Samuel; Jayanta Bhattacharya; C Parthiban; Gayathri Viswanathan; N D Pradeep Singh

doi:10.1016/j.ultsonch.2018.08.004

Ultrasound-assisted synthesis of metal organic framework for the photocatalytic reduction of 4-nitrophenol under direct sunlight

Ultrason Sonochem. 2018 Dec:49:215-221. doi: 10.1016/j.ultsonch.2018.08.004. Epub 2018 Aug 9.

Authors

Melvin S Samuel¹, Jayanta Bhattacharya¹, C Parthiban², Gayathri Viswanathan³, N D Pradeep Singh⁴

Affiliations

¹ School of Environmental Science and Engineering, Indian Institute of Technology, Kharagpur, West Bengal 721302, India.
² Department of Chemistry, Indian Institute of Technology, Kharagpur, West Bengal 721302, India.
³ Department of Cardiology, Duke University Health System, North Carolina, United States.
⁴ Department of Cardiology, Duke University Health System, North Carolina, United States. Electronic address: ndpradeep@chem.iitkgp.ernet.in.

PMID: 30150024
DOI: 10.1016/j.ultsonch.2018.08.004

Abstract

In this study, the metal organic framework MOF [Zn(BDC)(DMF)] crystal was synthesized via ultrasonic irradiation and solvothermal method. The synthesized MOF [Zn(BDC)(DMF)] crystal was characterized by PXRD, FTIR, FESEM-EDX, TGA, UV-DRS and BET. The catalytic activity of MOF [Zn(BDC)(DMF)] was investigated by 4-nitrophenol (4-NP) degradation under direct sunlight irradiation. The influence of various degradation parameters such as initial 4-NP concentration, dosage, pH and H₂O₂ concentration were investigated. The results indicated that the synthesized MOF [Zn(BDC)(DMF)] exhibited strong photocatalytic activity in the presence of NaBH₄ under sunlight irradiation and the reduction of 4-NP to 4-aminophenol (4-AP) completed within 10 min. The study provides the synthesized MOF [Zn(BDC)(DMF)] crystal can be used as a high performance catalyst for the treatment of dyes in wastewater.

Keywords: 4-aminophenol; 4-nitrophenol; Metal organic framework; Photocatalytical reduction; Ultrasound.