Work

Ultrasound assisted dispersion of Bi2Sn2O7-C3N4 nanophotocatalyst over various amount of zeolite Y for enhanced solar-light photocatalytic degradation of tetracycline in aqueous solution

Year: 2018

Type: article

Abstract: • Successfully synthesis of Bi 2 Sn 2 O 7 -C 3 N 4 /Y nanophotocatalyst by ultrasound energy. • Proving the efficient effect of BSO-BCN/Y on degradation of tetracycline. • Confirming the effect of Y zeolite loading on photocatalytic activity of BSO-BCN. • The highest photocatalytic activity with BSO-BCN over 10% loading of Y. • Introducing BSO-BCN/Y as a visible-light-driven nano-photocatalyst. Bi 2 Sn 2 O 7 -C 3 N 4 /Y nanophotocatalyst with various ratios of zeolite and high activity under simulated solar light irradiation were successfully synthesized using ultrasound-assisted dispersion method. The effect of different amounts of zeolite (10, 20 and 30 wt%) on the photocatalytic degradation of antibiotic tetracycline was investigated. The as-prepared nanophotocatalysts were characterized by XRD, FESEM, EDX, BET, FTIR, DRS and pH pzc techniques. The degradation results demonstrated that, Bi 2 Sn 2 O 7 -C 3 N 4 /Y(10) nanophotocatalyst with a degradation efficiency of about 80.4% is an optimum sample. This result can be attributed to the zeolite as a support that prevented the accumulation of Bi 2 Sn 2 O 7 -C 3 N 4 active phase and increased access to active sites. Furthermore, it enhanced the adsorption capacity of tetracycline on the photocatalyst surface; that it is beneficial for tetracycline photocatalytic oxidation. Also the results of the DRS analysis indicated that the sharp absorption edge for optimum sample Bi 2 Sn 2 O 7 -C 3 N 4 /Y at about 480 nm and was active in the visible light range. Eventually, different operational parameters such as photocatalyst loading, concentrations of pollutant and pH solution were investigated. In addition, the degradation mechanism was suggested for TC removal.

Source: Ultrasonics Sonochemistry

DOI: 10.1016/j.ultsonch.2018.01.001

Authors: Shirin Heidari, Mohammad Haghighi, Maryam Shabani

Institution: Sahand University of Technology

Language: English

Topic: Advanced Photocatalysis Techniques

Subfield: Renewable Energy, Sustainability and the Environment

Field: Energy

Domain: Physical Sciences

SDG: Clean water and sanitation

Open Access status: hybrid

Estimated APC paid: $3,710