Photocatalytic performance, anti-bacterial activities and 3-chlorophenol sensor fabrication using MnAl2O4·ZnAl2O4 nanomaterials

Md Abdus Subhan; Pallab Chandra Saha; Anwar Hossain; Abdullah M Asiri; M M Alam; Mohammad Al-Mamun; William Ghann; Jamal Uddin; Topu Raihan; A K Azad; Mohammed M Rahman

doi:10.1039/d1na00627d

Photocatalytic performance, anti-bacterial activities and 3-chlorophenol sensor fabrication using MnAl₂O₄·ZnAl₂O₄ nanomaterials

Nanoscale Adv. 2021 Aug 23;3(20):5872-5889. doi: 10.1039/d1na00627d. eCollection 2021 Oct 12.

Authors

Md Abdus Subhan¹, Pallab Chandra Saha¹, Anwar Hossain¹, Abdullah M Asiri^{2

3}, M M Alam⁴, Mohammad Al-Mamun⁵, William Ghann⁶, Jamal Uddin⁶, Topu Raihan⁷, A K Azad⁷, Mohammed M Rahman^{2

3}

Affiliations

¹ Department of Chemistry, Shahjalal University of Science and Technology Sylhet 3114 Bangladesh subhan-che@sust.edu.
² Department of Chemistry, Faculty of Science, King Abdulaziz University P.O. Box 80203 Jeddah 21589 Saudi Arabia mmrahman@kau.edu.sa.
³ Center of Excellence for Advanced Materials Research (CEAMR), King Abdulaziz University P. O. Box 80203 Jeddah 21589 Saudi Arabia.
⁴ Department of Chemical Engineering and Polymer Science, Shahjalal University of Science and Technology Sylhet 3114 Bangladesh.
⁵ Centre for Clean Environment and Energy, Griffith School of Environment, Gold Coast Campus, Griffith University QLD 4222 Australia.
⁶ Center for Nanotechnology, Department of Natural Sciences, Coppin State University Baltimore MD 21216 USA.
⁷ Department of Genetic Engineering and Biotechnology, Shahjalal University of Science and Technology Sylhet 3114 Bangladesh.

Abstract

A MnAl₂O₄·ZnAl₂O₄ nanomaterial was synthesized by co-precipitation and characterized by XRD, SEM, EDS, TEM, AFM, FTIR, PL, CV and EIS. The photocatalytic activity of the nanocomposite against MV dye and its MDR anti-bacterial functions were studied. The nanocomposite shows excellent photocatalytic as well as anti-bacterial activity. A MnAl₂O₄·ZnAl₂O₄ nanomaterial/Nafion/GCE electrode was fabricated and implemented as the working electrode of a 3-CP sensor. The sensor exhibited good sensitivity, with the lowest detection limit, fast response time, large linear dynamic range (LDR), and long-term stability in the chemical environment. The estimated sensitivity is 70.07 μA mM^-1 cm^-2. The LDR, limit of detection (LOD), and limit of quantification (LOQ) are 0.1 nM to 0.01 M, 0.0014 ± 0.0001 nM, and 0.004 nM, respectively. The MnAl₂O₄·ZnAl₂O₄ nanomaterial/Nafion/GCE is a promising fabricated sensor probe for the selective detection of 3-CP for the environmental safety and healthcare fields on a large scale.