Selective and sensitive visible-light-prompt photoelectrochemical sensor of paracetamol based on Bi₂WO₆ modified with Bi and copper sulfide

Abstract

When the compound is illuminated, Bi–CuS/Bi2WO6 generates lots of photogenerated electrons and exhibits outstanding performance for paracetamol (PA).

Recent Advances in Photoelectrochemical Sensors for Analysis of Toxins and Abused Drugs in the Environment

“…The Bi-based semiconductors, such as BiPO 4 [79][80][81][82], BiVO 4 [83][84][85], Bi 2 WO 6 [86][87][88], and BiFeO 3 [89,90] , are linked with the Bi 6s and O 2p hybrid orbitals of the narrowed bandgap as well as the deep valance band, which have received extensive attention in the study of PEC because of their efficient visible light photocatalytic activity [91]. Bi 2 WO 6 , as the simplest member of the Aurivillius family of layered perovskites, possesses good photon absorptivity under visible light irradiation [92].…”

“…Therefore, when ofloxacin is added in the system, competition between photogenerated electrons to flow through the system and oxidize ofloxacin occurs, causing the decreasing of the photocurrent. On the basis of the surface plasmon resonance effect of metallic Bi, Li et al coupled Bi and CuS, a narrow bandgap semiconducting material, with Bi 2 WO 6 to prepare the Bi-CuS/Bi 2 WO 6 heterojunction with enhanced separation of photo-generated charge carriers, charge transfer, and absorption wavelengths under visible light [87]. Then, a sensitive label-free PEC sensor found on Bi-CuS/Bi 2 WO 6 nanocomposite was fabricated for the determination of paracetamol (PA), which is a ubiquitous NSAID.…”

A Visible-Light-Active CuS/MoS2/Bi2WO6 Aptamer Sensitively Detects the Non-Steroidal Anti-Inflammatory Drug Diclofenac

“…More Bi 2 WO 6 uses emerged in recent years, including PEC solar cells, PEC sensors, and photoelectrocatalytic hydrogen generation [21][22][23]. However, high-degree recombination specialized in photoexcited carriers, comparably weak light consumption capacity in pure Bi 2 WO 6 , and specialized poor photocatalytic activity severely restricted the highlighted practical uses in the environment [24]. As a result, significant efforts have been undertaken to address these shortcomings.…”

“…As a result, significant efforts have been undertaken to address these shortcomings. Semiconductor coupling and metal particle deposition coupling with carbon materials are two examples [23,24].…”