Morphological and elemental tuning of BiOCl/BiVO4 heterostructure for uric acid electrochemical sensor and antibiotic photocatalytic degradation

Pandiyarajan Anand; Atul Verma; Yi-An Hong; Anren Hu; Dhayanantha Prabu Jaihindh; Ming-Show Wong; Yen-Pei Fu

doi:10.1016/j.chemosphere.2022.136847

Morphological and elemental tuning of BiOCl/BiVO₄ heterostructure for uric acid electrochemical sensor and antibiotic photocatalytic degradation

Chemosphere. 2023 Jan:310:136847. doi: 10.1016/j.chemosphere.2022.136847. Epub 2022 Oct 11.

Authors

Pandiyarajan Anand¹, Atul Verma¹, Yi-An Hong², Anren Hu³, Dhayanantha Prabu Jaihindh⁴, Ming-Show Wong⁵, Yen-Pei Fu⁶

Affiliations

¹ Department of Materials Science and Engineering, National Dong Hwa University, Shou-Feng, Hualien, 97401, Taiwan.
² Institute of Medical Sciences, Tzu-Chi University, Hualien, 97002, Taiwan.
³ Institute of Medical Sciences, Tzu-Chi University, Hualien, 97002, Taiwan; Department of Laboratory Medicine and Biotechnology, Tzu-Chi University, Hualien, 97004, Taiwan.
⁴ Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, 11529, Taiwan.
⁵ Department of Materials Science and Engineering, National Dong Hwa University, Shou-Feng, Hualien, 97401, Taiwan. Electronic address: mswong@gms.ndhu.edu.tw.
⁶ Department of Materials Science and Engineering, National Dong Hwa University, Shou-Feng, Hualien, 97401, Taiwan. Electronic address: ypfu@gms.ndhu.edu.tw.

PMID: 36241103
DOI: 10.1016/j.chemosphere.2022.136847

Abstract

Deep eutectic solvents (DES) consisting of EG-(ChCl: C₂H₆O₂) and TU-(ChCl: CH₄N₂S) assisted synthesized BiOCl/BiVO₄ heterostructured catalyst studied for electrochemical uric acid (UA) sensor and tetracycline photocatalytic degradation. The chemical composition of the BiOCl/BiVO₄ catalyst was analyzed by X-ray photoelectron spectroscopy (XPS). UV-vis spectroscopy reveals increased absorption of visible light till the near-infrared region, which results in a narrowing of band gap energy from 2.3 eV to 2.2 eV for BiOCl/BiVO₄-TU. Morphology of catalyst analyzed using field-emission scanning electron microscope (FE-SEM) and Transmission electron microscope (TEM) technique. Time-Resolved photoluminescence (TRPL) confirms an increased lifetime of e^-/h⁺ pair after heterostructure formation. The catalyst-modified glassy carbon electrode shows selectivity toward the detection of uric acid (UA). The limit of detection (LOD) is estimated to be 0.04688 μM for UA; also, interference and stability of catalyst were studied. Photocatalytic activity of the synthesized catalyst was investigated by degrading tetracycline (TC) antibiotic pollutants, and their intermediate product was analyzed by ion trap mass spectrometry (MS).

Keywords: BiOCl/BiVO(4); Deep eutectic solvents; Heterostructure photocatalysts; Tetracycline degradation; Uric acid electrochemical sensor.

MeSH terms

Anti-Bacterial Agents / chemistry
Bismuth* / chemistry
Catalysis
Tetracycline / chemistry
Uric Acid*

Substances

Bismuth
Uric Acid
Tetracycline
Anti-Bacterial Agents