Synthesis and Characterisation of Reduced Graphene Oxide/Bismuth Composite for Electrodes in Electrochemical Energy Storage Devices

Wang, Jiabin; Zhang, Han; Hunt, Michael; Charles, Alasdair; Tang, Jie; Bretcanu, Oana; Walker, David; Hassan, Khalil T.; Sun, Yige; Šiller, Lidija

doi:10.1002/cssc.201601553

Cited by 47 publications

(14 citation statements)

References 70 publications

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“…These results of rGO match the literature [35] and can be attributed to eliminating the defects and, at the same time, introducing a higher number of new smaller graphitic domains. Moreover, the Raman bands at 100, 512 and 1070 cm −1 are attributed to the vibrations of bismuth subcarbonate [36]. Figure 3 shows SEM images and EDX mapping of the (BiO) 2 CO 3 -rGO nanocomposite prepared in this work.…”

Section: Raman Spectroscopic Analysismentioning

confidence: 94%

Bismuth Subcarbonate Decorated Reduced Graphene Oxide Nanocomposite for the Sensitive Stripping Voltammetry Analysis of Pb(II) and Cd(II) in Water

Zhao

Sedki

et al. 2020

Sensors

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In this paper, bismuth subcarbonate (BiO)2CO3-reduced graphene oxide nanocomposite incorporated in Nafion matrix ((BiO)2CO3-rGO-Nafion) was synthesized and further applied, for the first time, in the sensitive detection of Pb(II) and Cd(II) by square-wave anodic stripping voltammetry (SWASV). The as-synthesized nanocomposites were characterized by energy-dispersive spectroscopy (EDS), Raman spectroscopy, scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). (BiO)2CO3 composite plays a key role in the improvement of the detection sensitivity, which can form multicomponent alloy with cadmium and lead. Additionally, the unique structure of rGO can enlarge the surface area and provide abundant active sites. Moreover, Nafion incorporation in the nanocomposite can effectively increase the adhesion and mechanical strength of the film, and further improve the preconcetration ability due to the cation-exchange capacity of its abundant sulfonate groups. As expected, the (BiO)2CO3-rGO/Nafion nanocomposite-modified glassy carbon electrode ((BiO)2CO3-rGO-Nafion/GCE) achieved low detection limits of 0.24 μg/L for Pb(II) and 0.16 μg/L for Cd(II), in the linear range of 1.0–60 μg/L, and showed some excellent performance, such as high stability, good selectivity, and sensitivity. Finally, synthetic water samples were prepared and further used to verify the practicability of the (BiO)2CO3-rGO-Nafion/GCE with satisfactory results.

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Section: Raman Spectroscopic Analysismentioning

confidence: 94%

Bismuth Subcarbonate Decorated Reduced Graphene Oxide Nanocomposite for the Sensitive Stripping Voltammetry Analysis of Pb(II) and Cd(II) in Water

Zhao

Sedki

et al. 2020

Sensors

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“…It is obvious that the intensity ratio of peaks for the D and G band ( I D / I G ) changes from 0.88 in GO to 1.06 in Bi/rGO, which confirms that GO is successfully reduced and Bi/rGO is fabricated. [ 37–39 ] From UV–vis spectra (Figure 1d), it can be seen that the absorption peak of GO occurred at 230 nm is red shifted towards 270 nm in Bi/rGO, which also proves the reduction of GO to rGO. [ 38,40 ] In addition, no difference can be found from the Raman and UV–vis spectra of rGO and Bi/rGO (Figure S1, Supporting Information).…”

mentioning

confidence: 90%

Efficient CO₂ Reduction to HCOOH with High Selectivity and Energy Efficiency over Bi/rGO Catalyst

et al. 2020

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have been dedicated to produce HCOOH (or HCOO − ) through ERC. Several metals, such as Pd, Pb, Hg, In, and Cd, exhibit good selectivity for HCOOH, while some of them are plagued by the shortcomings of scarcity, high cost or toxicity. [19][20][21][22] Besides, many catalysts exhibit low cathodic energy efficiency (EE), indicating the large energy consumption, because of the high overpotential and low Faradaic efficiency (FE) of products. [14] Therefore, developing the resource-abundant catalysts with high FE and low overpotential to increase EE is significant while still very challenging.Theoretically, Bi might be an intriguing catalyst for ERC as it is ecofriendly, costeffective, and inferior for H 2 evolution. There are several reports on the carbon monoxide (CO) production in ionic liquid electrolyte by using Bi-based materials. [23][24][25][26] However, ERC is more appealing in aqueous solution for practical application. Recently, some efforts have been dedicated to the HCOOH (or HCOO − ) production in aqueous solution over Bi-based catalysts. [27][28][29][30][31] Moreover, Bi shows a relatively positive electrode potential, which is conducive to obtain the high cathodic EE and long-term stability. Thus, it is desired to improve Bi-based catalysts with high selectivity and cathodic EE for HCOOH production in aqueous solution.Herein, the ultrafine Bi nanoparticles (NPs) anchored on reduced graphene oxide (Bi/rGO) is synthesized and employed for ERC in 0.1 m KHCO 3 electrolyte. As a result, the synthesized Bi/rGO endows the ERC with excellent performance under normal pressure and room temperature. It almost outperforms all recently reported electrocatalysts with the highest 98% FE and meanwhile a high cathodic EE of 71% for HCOOH at −0.8 V versus RHE (the voltages reported here are against RHE unless noted), which is also comparable with the most existing catalysts for the HCOOH production. Moreover, the obtained FE of HCOOH and current density show negligible deterioration over 12 h, illustrating the favorable stability of Bi/ rGO.Bi/rGO is synthesized through a facile reduction route by using a reducing agent of sodium borohydride. For comparison, pure Bi and Bi-PVP using the polyvinylpyrrolidone (PVP) as the dispersant are also prepared as well. As shown in Figure 1a, the diffraction peaks of all three samples can be assigned to metallic Bi (JCPDS: 44-1246). [32] Additionally, high-resolution X-ray photoelectron spectroscopy (XPS) spectra (Figure 1b) also manifest that only Bi metal exists in all samples. The Bi 4f signals at 156.8 and 162.1 eV for Bi-PVP and pure Bi are in the The electroreduction of carbon dioxide (CO 2 ) to value-added fuels is of great significance to meet the ever-increasing energy and environmental challenges. So far, desirable selectivity and Faradaic efficiency for CO 2 reduction can be obtained over most electrocatalysts. However, improving cathodic energy efficiency is still neglected in research. Herein, a facile reduction method is first presented to synthesize the ultrafine non-n...

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“…The cathodic peaks are also well-observed corresponding to the reduction reaction of Bi 3+ into Bi which is explained previously. [10][11][12] Figure 1b indicates that the oxidation peaks on BiNDs electrode was higher than that on Bi film electrode corresponding to the higher amount of Bi on the BiNDs electrode surface.…”

Section: Electrochemical Characterization Of Gc/binds Electrodesmentioning

confidence: 99%

Bismuth nanodendrites deposited on glassy carbon electrode as a sensitive electrochemical sensor for simultaneous detection of Cd²⁺ and Pd²⁺ ions

Anh

Duy

Yến

et al. 2018

Vietnam Journal of Chemistry

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In this study, bismuth nanodendrites (BiNDs) were fabricated on glassy carbon electrode by chronopotentiometric method. The hierarchical structure and high population matrix of BiNDs provides high surface active area to enhance the electrochemical signals of measured Cd2+ and Pb2+ ions. The developed bismuth nanodendritic structure was well‐observed and characterzied by scanning electron microscopy (SEM). Electrochemical behaviours of developed BiNDs electrodes were studied by the cyclic voltammetric (CV) method. The fabrication conditions for BiNDs such as the applied current and deposition time were optimized as ‐10 mA and 90 s, respectively. Under this optimized condition, the highest peaks of Cd2+ and Pb2+ ions at concentration of 20 ppb were obtained. The Cd2+ and Pb2+ signals acquired by BiNDs are almost three times greater than that measured by the Bi film electrode.

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Synthesis and Characterisation of Reduced Graphene Oxide/Bismuth Composite for Electrodes in Electrochemical Energy Storage Devices

Cited by 47 publications

References 70 publications

Bismuth Subcarbonate Decorated Reduced Graphene Oxide Nanocomposite for the Sensitive Stripping Voltammetry Analysis of Pb(II) and Cd(II) in Water

Bismuth Subcarbonate Decorated Reduced Graphene Oxide Nanocomposite for the Sensitive Stripping Voltammetry Analysis of Pb(II) and Cd(II) in Water

Efficient CO₂ Reduction to HCOOH with High Selectivity and Energy Efficiency over Bi/rGO Catalyst

Bismuth nanodendrites deposited on glassy carbon electrode as a sensitive electrochemical sensor for simultaneous detection of Cd²⁺ and Pd²⁺ ions

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Synthesis and Characterisation of Reduced Graphene Oxide/Bismuth Composite for Electrodes in Electrochemical Energy Storage Devices

Cited by 47 publications

References 70 publications

Bismuth Subcarbonate Decorated Reduced Graphene Oxide Nanocomposite for the Sensitive Stripping Voltammetry Analysis of Pb(II) and Cd(II) in Water

Bismuth Subcarbonate Decorated Reduced Graphene Oxide Nanocomposite for the Sensitive Stripping Voltammetry Analysis of Pb(II) and Cd(II) in Water

Efficient CO2 Reduction to HCOOH with High Selectivity and Energy Efficiency over Bi/rGO Catalyst

Bismuth nanodendrites deposited on glassy carbon electrode as a sensitive electrochemical sensor for simultaneous detection of Cd2+ and Pd2+ ions

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Efficient CO₂ Reduction to HCOOH with High Selectivity and Energy Efficiency over Bi/rGO Catalyst

Bismuth nanodendrites deposited on glassy carbon electrode as a sensitive electrochemical sensor for simultaneous detection of Cd²⁺ and Pd²⁺ ions