Supercritical CO2 mediated construction of aluminium waste recovered γ-Al2O3 impregnated Dracaena trifasciata biomass-derived carbon composite: A robust electrocatalyst for mutagenic pollutant detection

Sabarison Pandiyarajan; Shobana Sebastin Mary Manickaraj; Ai-Ho Liao; Gopinath Baskaran; Manickam Selvaraj; Mohammed A Assiri; Hong Zhou; Ho-Chiao Chuang

doi:10.1016/j.jcis.2023.12.117

Supercritical CO₂ mediated construction of aluminium waste recovered γ-Al₂O₃ impregnated Dracaena trifasciata biomass-derived carbon composite: A robust electrocatalyst for mutagenic pollutant detection

J Colloid Interface Sci. 2024 Apr:659:71-81. doi: 10.1016/j.jcis.2023.12.117. Epub 2023 Dec 22.

Authors

Sabarison Pandiyarajan¹, Shobana Sebastin Mary Manickaraj¹, Ai-Ho Liao², Gopinath Baskaran³, Manickam Selvaraj⁴, Mohammed A Assiri⁴, Hong Zhou⁵, Ho-Chiao Chuang⁶

Affiliations

¹ Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, Taipei 106344, Taiwan; Department of Mechanical Engineering, National Taipei University of Technology, Taipei 106344, Taiwan.
² Graduate Institute of Biomedical Engineering, National Taiwan University of Science and Technology, Taipei 106335, Taiwan; Department of Biomedical Engineering, National Defense Medical Center, Taipei 114201, Taiwan.
³ Global Calcium Pvt., Ltd., Banglore, Karnataka, India.
⁴ Department of Chemistry, Faculty of Science, King Khalid University, Abha 61413, Saudi Arabia.
⁵ Department of Electronics, Information and Communication Engineering, Osaka Institute of Technology, 5-16-1, Omiya, Asahi-ku, Osaka 535-8585, Japan.
⁶ Department of Mechanical Engineering, National Taipei University of Technology, Taipei 106344, Taiwan. Electronic address: hchuang@mail.ntut.edu.tw.

PMID: 38157728
DOI: 10.1016/j.jcis.2023.12.117

Abstract

Inspired by the waste-to-wealth concept, we have recovered the gamma phase aluminium oxide nanoparticles (γ-Al₂O₃ NPs) from waste aluminium (Al) foils and fabricated a composite with Dracaena trifasciata biomass-derived activated carbon matrix (DT-AC) using supercritical carbon-di-oxide (SC-CO₂) pathway. The prepared samples are characterized altogether by various micro- and spectroscopic analyses. Based on the results, the recovered γ-Al₂O₃ NPs are well impregnated in the DT-AC surface by the action of the microbubble effect from the SC-CO₂. The higher D-band and I_D/I_G value of 1.07 in the Al₂O₃/DT-AC nanocomposite indicate increased defects and the amorphous nature of the carbon materials. The effect of scan rate (ν) demonstrated greater linearity in ν^1/2 vs peak current in the electrochemical detection study of the mutagenic pollutant 4-(methylamino) phenol hemi sulfate, showing a quasi-reversible electron transfer process undergoing diffusion-controlled kinetics. Furthermore, the limit of detection is determined to be 3.2 nM L^-1 with an extensive linear range, spanning from 0.05 to 618.25 µM/L. The incredible sensitivity of 2.117 μA μM^-1 cm^-2, along with excellent selectivity, repeatability, and stability, is observed. Further, the respectable recovery percentage of 98.61 % in the environmental water sample is perceived. The observed outcomes suggest that the prepared Al₂O₃/DT-AC composite performs as an excellent electrocatalyst material, and the processing techniques used are thought to be sustainable in nature.

Keywords: Activated carbon; Aluminium oxide; Electrochemical sensor; Supercritical-CO(2); Ultrasonication.