Graphite/Ag/AgCl nanocomposite as a new and highly efficient electrocatalyst for selective electroxidation of oxalic acid and its assay in real samples

Alizadeh, Taher; Nayeri, Sahar

doi:10.1016/j.msec.2019.03.052

Cited by 19 publications

(7 citation statements)

References 45 publications

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“…TEM characterization (Figure S3) indicates that the diameter of AgNPs is about 20 nm in the C@Ag-75 sample, and the elemental mapping results demonstrate that AgNPs are homogeneously distributed on the surface of MCMB. XPS measurement of C@Ag-75 shows two distinct peaks at 367.4 and 373.4 eV in the high-resolution Ag 3d spectrum, corresponding to Ag 3d 5/2 and Ag 3d 3/2 of Ag 0 , respectively (Figure d), confirming the formation of Ag on the surface of MCMB. , The XRD pattern of C@Ag-75 also shows typical diffraction peaks of silver centered at 2 thetas of 38.9, 44.4, and 65° (Figure e) …”

Section: Resultsmentioning

confidence: 75%

“…31,40 The XRD pattern of C@Ag-75 also shows typical diffraction peaks of silver centered at 2 thetas of 38.9, 44.4, and 65°(Figure 1e). 41 To verify if the particle morphology and surface composition would have any effect on the electrochemical properties, MCMBs treated with PVP without AgNO 3 were papered. As shown in Figure S4, the microstructure and electrochemical property of the treated MCMBs is almost the same as that of the original MCMBs.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Ag Nanoparticle-Decorated Mesocarbon Microbeads for Homogeneous Lithium Deposition toward Stable Hybrid Anodes

Dong

Zhao

Xia

et al. 2022

ACS Appl. Nano Mater.

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Transforming conventional Li-ion batteries into lithium-ion/lithium metal hybrid batteries by curtailing the N/P (anode lithiation capacity/cathode delithiation capacity) ratio is an effective approach to improve the energy density. The lower N/P ratio brings more capacity in the form of lithium metal, leading to more serious inhomogeneous plating/stripping of Li and active Li consumption. Therefore, it is of great importance to regulate uniform Li plating/stripping in the low N/P ratio condition for improving the reversibility of the batteries. This work proposes the surface modification of mesocarbon microbeads (MCMBs) with Ag nanoparticles as lithiophilic seeds that are capable of diminishing the nucleation overpotential of lithium and directing uniform and conformal Li deposition on the surface of MCMB particles, which prevents dendrite growth and agglomeration of dead Li on top of the anode. As a result, the hybrid anode using Ag-modified MCMBs can remain stable for more than 150 charge/discharge cycles in half-cells under an ultra-low N/P ratio of 0.33. Meanwhile, the full cell using this hybrid anode maintains 80.1% capacity after 130 cycles at 0.5 C under a low N/P ratio of 0.67, while the capacity retention of the cell using bare MCMBs quickly drops to 13.2% only after 100 cycles.

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Section: Resultsmentioning

confidence: 75%

Section: ■ Results and Discussionmentioning

confidence: 99%

Ag Nanoparticle-Decorated Mesocarbon Microbeads for Homogeneous Lithium Deposition toward Stable Hybrid Anodes

Dong

Zhao

Xia

et al. 2022

ACS Appl. Nano Mater.

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“…An intense peak obtained at 2θ = 26.7° related to the (002) plane of graphite (d 002 = 0.33 nm) as shown in Figure 2(A). 32 The peak obtained at the (004) represents the interplanar distance. 33 The diffraction pattern of nano graphite consists of five significant peaks of carbon (002), (100), (101), (004), and (110) as presented in Figure 2(B).…”

Section: Resultsmentioning

confidence: 99%

Mechanical performance of composites reinforced with carbon black and different types of graphitic nanofillers for different applications

Manikkavel

Kumar

Park

2022

Journal of Elastomers & Plastics

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The piezo-electric energy harvesting devices based on rubber composites have attracted great attention in the field of flexible electronics. These devices have the ability to provide a voltage of ∼0.5 V when subjected to mechanical strain. In this work, carbon allotropes nanofillers were used to reinforce the room-temperature vulcanized silicone rubber (RTV-SR). The nanofillers added to the rubber matrix were found to improve the compressive modulus, tensile strength, fracture strain, and tensile modulus. For example, the compressive modulus was 1.29 MPa (Virgin) and improved to 1.4 MPa (graphene), 2.3 MPa (CB), 2.2 MPa (CB–graphite hybrid), 2.17 MPa (CB–Nano graphite hybrid), and finally 2.19 MPa (CB–graphene hybrid). Similarly, the fracture strain was 146% (Virgin) and improved to 149% (graphene), 156% (CB), 160% (CB–graphite hybrid), 151% (CB–Nano graphite hybrid), and lastly 178% (CB–graphene hybrid). Moreover, the effect of three different diameters of loading tips is used for voltage production. More areas of deformation during energy harvesting can be able to produce higher voltage output. For example, a 21 mm tip can produce higher energy output than 7 mm and 14 mm. In the end, it was found that formation of cracks in the electrode while repeated loading causes a reduction in voltage output.

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“…The linear detection range for oxalic acid is 0.1-20 mg L −1 and the limit of detection is as low as 0.057 mg L −1 . The present method exhibits higher sensitivity than some reported determination methods for oxalic acid, 29,30,[33][34][35]39,40 and has been successfully applied to detect oxalic acid in tomato and cherry tomato with good precision and accuracy. The schematic illustration of the synthesis of CDs and the detection mechanism of oxalic acid is demonstrated in Scheme 1.…”

Section: Introductionmentioning

confidence: 82%

“…Up to now, many analytical methods have been developed for the detection of oxalic acid, such as the potassium permanganate titration method, colorimetric detection, 29 spectrophotometry, 30 chromatography, 31,32 electrochemical detection, 33–35 chemiluminescence, 36 and so on. However, each method has usually suffered from diverse drawbacks, such as time-consuming, expensive equipment, insufficient selectivity, low sensitivity, and no real samples etc.…”

Section: Introductionmentioning

confidence: 99%

Wild jujube-based fluorescent carbon dots for highly sensitive determination of oxalic acid

Shi

et al. 2022

RSC Adv.

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Graphite/Ag/AgCl nanocomposite as a new and highly efficient electrocatalyst for selective electroxidation of oxalic acid and its assay in real samples

Cited by 19 publications

References 45 publications

Ag Nanoparticle-Decorated Mesocarbon Microbeads for Homogeneous Lithium Deposition toward Stable Hybrid Anodes

Ag Nanoparticle-Decorated Mesocarbon Microbeads for Homogeneous Lithium Deposition toward Stable Hybrid Anodes

Mechanical performance of composites reinforced with carbon black and different types of graphitic nanofillers for different applications

Wild jujube-based fluorescent carbon dots for highly sensitive determination of oxalic acid

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