A novel electrochemical sensor for highly sensitive detection of bisphenol A based on the hydrothermal synthesized Na-doped WO3 nanorods

A facile synthesis of nanostructured CoFe2O4 for the electrochemical sensing of bisphenol A

“…The result showed that the oxidation of BPA on the surface of CoFe 2 O 4 /GCE was controlled by diffusion process. 39 The pH value of the electrolyte had a remarkable inuence on the electrochemical behaviours of BPA. The effect of different pH from 4.0 to 9.0 over BPA oxidation on CoFe 2 O 4 /GCE was shown in Fig.…”

An Overview on Recent Progress of Metal Oxide/Graphene/CNTs-Based Nanobiosensors

“…Besides morphological versatility, MONs offer some advantages: high surface/volume ratio, nontoxicity, good biocompatibility, chemical stability, excellent selectivity, electron and phonon limitation, high catalytic efficiency, and strong adsorption ability, physicochemical interface features [ 36 – 40 ]. Additionally, MONs can be produced via relatively easy and cost-effective methods such as radio frequency (RF) magnetron sputtering [ 41 – 43 ], thermal evaporation [ 44 , 45 ], plasma-enhanced chemical vapor deposition (PECVD) [ 46 , 47 ], molecular beam epitaxy [ 48 ], and solgel technique [ 49 ], electrochemical deposition process [ 50 ], and hydrothermal method [ 51 ]. These significant features have made MONs one of the most desired materials for biomedical applications and biosensor market.…”

Metal Oxides-Based Semiconductors for Biosensors Applications

“…The LOD value in the case of WO 3 nanowire is significantly lower (0.28 µM) compared with WO3 nanopowder (5 µM) underlining the significance of semiconductor morphology, synthesis and functionalizing procedures. The hydrothermal method has been used to produce WO 3 sensors with different morphologies: flower-like for aflatoxin B1 (Feng et al, 2018), nanorods for bisphenol A (Zhou et al, 2017), and nanosheets for cardiac biomarker Troponin I (Sandil et al, 2018). The WO 3 flower-like morphology was functionalized with bovine serum albumin and the LOD corresponding to aflatoxin B1 was very low (0.28 pg/mL).…”

“…Among others, TiO 2 (Wang M. et al, 2019), WO 3 (Liu et al, 2015), SnO 2 (Dong and Zheng, 2014), and ZnO (Zhang et al, 2019) have attracted considerable attention due to their electrochemical sensitive properties (Enesca et al, 2012a) and energy band alignment (Enesca et al, 2012b) suitable for enzyme based biosensors. Another advantage of these materials is represented by a large number of cost effective synthesis methods such as co-precipitation (Dong and Zheng, 2014), sonochemical precipitation (Zhou et al, 2013), thermal oxidation (Li et al, 2010), chemical etching (Liu et al, 2010), polyol (Elahi et al, 2019), hydrothermal (Zhou et al, 2017), or sol-gel (Rathinamala et al, 2019) allowing the formation of various morphologies such as porous quasi-nanospheres (Liu H. et al, 2017), hollow nano-spheres (Santos et al, 2016), nanorods (Dong et al, 2017), nanosheets (Zhang et al, 2020), or flower-like particles (Feng et al, 2018). Additionally, these materials can be combined between them or with others to form tandem heterostructures (Enesca et al, 2015), hybrid structures (Mihaly et al, 2008), or composite structures (Visa et al, 2016) with advanced electrochemical properties which can be adapted to a specific biosensor application.…”