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Highly sensitive and selective detection of Bis-phenol A based on hydroxyapatite decorated reduced graphene oxide nanocomposites
- Highly sensitive and selective detection of Bis-phenol A based on hydroxyapatite decorated reduced graphene oxide nanocomposites
- Alam, Mohammad K.; Rahman, Mohammed M.; Elzwawy, Amir; Torati, Sri Ramulu; Islam, Mohammad S.; Todo, Mitsugu; Asiri, Abdullah M.; Kim, Dojin; Kim, CheolGi
- DGIST Authors
- Alam, Mohammad K.; Elzwawy, Amir; Torati, Sri Ramulu; Kim, CheolGi
- Issue Date
- Electrochimica Acta, 241, 353-361
- Article Type
- Biocompatibility; Bis Phenol A; Bis Phenol A; Bis Phenol A; Carbon; Cell Culture; Chemical Detection; Chemical Reduction Methods; Composites; Cost Effectiveness; Detection Limit; Detection Limits; Differentiation; Electrochemical Sensor; Electrode; Electrodes; Extraction; Fourier Transform Infrared Spectroscopy; Glass Membrane Electrodes; Graphene; High Resolution Transmission Electron Microscopy; Human Mesenchymal Stem Cells; Hydroxyapatite; Liquid Chromatography; Mesenchymal Stem Cells; Modified Glassy Carbon Electrode; Nanocomposites; Nanoparticles; Phenols; Reduced Graphene Oxide (RGO); Reduced Graphene Oxides (RGO); Selective Chemical Sensors; Signal to Noise Ratio; Stem Cells; Thermogravimetric Analysis; Transmission Electron Microscopy; Transmission Electron Microscopy Images; Water; X Ray Diffraction
- A facile and cost effective chemical reduction method is employed for the preparation of reduced graphene oxide/hydroxyapatite (rGO/HAp) nanocomposites. The transmission electron microscopy images revealed that the HAp flakes are well decorated on the surface of rGO. The morphological structure of the as-synthesized rGO/HAp nanocomposites was confirmed through X-ray diffraction, Fourier transform infrared spectroscopy and Raman spectroscopy, while the composition and thermal stability were analyzed by energy dispersive spectra and thermogravimetric analysis, respectively. Furthermore, the effect of rGO/HAp nanocomposites for the proliferation of Human Mesenchymal Stem Cell (hMSC) was performed to confirm the biocompatibility. A selective chemical sensor based on rGO/HAp modified glassy carbon electrode (GCE) for sensitive detection of Bis-phenol A (BPA) has been developed. Several important parameters controlling the performance of the BPA chemi-sensor were investigated and optimized at room conditions. The rGO/HAp/Nafion/GCE sensor offers a fast response and highly sensitive BPA detection. Under the optimal conditions, a linear range from 0.2 nmol L−1 to 2.0 mmol L−1 for the detection of BPA was observed with the detection limit of 60.0 pmol L−1 (signal-to-noise ratio, at an SNR of 3) and sensitivity of 18.98 × 104 μA.L/μmol.m2. Meanwhile, the fabricated chemi-sensor showed an excellent, specific and selective recognition to target BPA molecules among coexistence of other analytes in the buffer system. This novel effort initiated a well-organized way of efficient rGO/HAp/Nafion/GCE sensor development and practically analyzed the real hazardous environmental pollutants at room conditions. © 2017 Elsevier Ltd
- Elsevier Ltd
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