Selenium functionalized carbon for high dispersion of platinum–ruthenium nanoparticles and its effect on the electrocatalytic oxidation of methanol

Wang, Rongfang; Da, Huahua; Wang, Hui; Ji, Shan; Zhang, Tian

doi:10.1016/j.jpowsour.2013.01.143

Cited by 20 publications

(7 citation statements)

References 31 publications

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“…Although all the spectra are similar, increasing the amount of NaCl in the carbonization process resulted in an increase in ID/IG ratio with a maximum value of 1.150 for NFC-15. This finding indicates that increasing the amount of NaCl brings about more inner defects in the as-prepared carbon materials [43], with an optimum amount of 15 g; however increasing further the amount of NaCl can be detrimental. This observation is also in good agreement with the SSA and PSD results (see later).…”

Section: Resultsmentioning

confidence: 89%

Toward high performance of zinc-air battery using hydrophobic carbon foam-based diffusion electrode

Chen

Wang

et al. 2019

Journal of Industrial and Engineering Chemistry

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NaCl is used as template to form porous carbon during the carbonization procedure.It is found that the NaCl amount played an important role in the physical properties of hydrophobic carbon materials. When the current density increases from 0 to 50 mA cm -2 , the obtained sample containing zinc-air battery potential decreases from +1.492 V and +1.040 V (vs. RHE); a potential drop very close to that of the Pt/C electrode (from +1.489V to +1.043V). It is also found that in continuous discharge operations at 25 mA cm -2 , the obtained material exhibits a stable discharge behavior, comparable to Pt/C.

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Section: Resultsmentioning

confidence: 89%

Toward high performance of zinc-air battery using hydrophobic carbon foam-based diffusion electrode

Chen

Wang

et al. 2019

Journal of Industrial and Engineering Chemistry

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“…Considering the peculiar photoconductive, semiconductive and optical properties of Se, the use of Se-based nanomaterials has been investigated in a wide range of applications, such as in the production of new optical devices, photovoltaic solar cells, photographic exposure meters and rectifiers and photo-assisted fuel cells [172][173][174][175]. Moreover, Se-nanostructures resulted to act as good catalyst for both the chelation of mercury ions (Hg 2+ ) present as contaminants in different polluted environments [176], and the degradation of several toxic chemical compounds (e.g., trypan blue dye) [177], as well as an efficient bio-sensor for H 2 O 2 in different matrices [178].…”

Section: Microbial Generation Of Se-and Te-nanostructuresmentioning

confidence: 99%

Microbial-Based Bioremediation of Selenium and Tellurium Compounds

Piacenza¹,

Presentato²,

Zonaro³

et al. 2018

Biosorption

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The chalcogens selenium (Se) and tellurium (Te) are rare earth elements, which are mainly present in the environment as toxic oxyanions, due to the anthropogenic activities. Thus, the increased presence of these chalcogen-species in the environment and the contamination of wastewaters nearby processing facilities led to the necessity in developing remediation strategies aimed to detoxify waters, soils and sediments. Among the different decontamination approaches, those based on the ability of microorganisms to bioaccumulate, biomethylate or bioconvert Se-and/or Te-oxyanions are considered the leading strategy for achieving a safe and eco-friendly bioremediation of polluted sites. Recently, several technologies based on the use of bacterial pure cultures, bacterial biofilms or microbial consortia grown in reactors with different configurations have been explored for Se-and Te-decontamination purposes. Further, the majority of microorganisms able to process chalcogen-oxyanions have been described to generate valuable Se-and/or Te-nanomaterials as end-products of their bioconversion, whose potential applications in biomedicine, optoelectronics and environmental engineering are still under investigation. Here, the occurrence, the use and the toxicity of Se-and Te-compounds will be briefly overviewed, while the microbial mechanisms of chalcogen-oxyanions bioprocessing, as well as the microbialbased strategies used for bioremediation approaches will be extensively described. Biosorption 132Biosorption 136Microbial-Based Bioremediation of Selenium and Tellurium Compounds

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“…In addition, their high density of coordinated surface atoms may enhance their significant activity in the selective oxidation of alcohol. − Among all noble metals, platinum (Pt) reveals excellent catalytic behavior and proves to be a promising electrocatalyst for MOR applications. , In addition, commercially available Pt/C catalysts are often considered with respect to their catalytic stability and activity. Although Pt is considerably expensive and a rare natural resource, it has a remarkable impact on the commercialization of DMFC devices. , Due to the high price of Pt, the quantity used is reduced by introducing a heteroatom or by combining other metals with Pt. − Although carbon-supported catalysts are not suitable for industrial production, Pt-based chalcogenides are preferred to commercial MOR-oriented DMFC devices. Generally, a composite with a carbon matrix is a universal strategy to elevate conductivity. , In addition, Schottky contact between the carbon matrix and the active material will increase the charge-transfer resistance and decrease the conductivity .…”

Section: Introductionmentioning

confidence: 99%

Pt Nanoparticle-Decorated Se Rods for Electrochemical Detection of 17β-Estradiol and Methanol Oxidation

Amalraj

Murthy

Wang

2022

ACS Appl. Nano Mater.

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Fabricating platinum (Pt) nanoparticle-draped selenium (Se) rods over the spacious region of glassy carbon electrodes could stimulate an impressive electrocatalytic activity owing to the synergic effect and interfacial property between Pt and Se, the oxophilic property and the anchoring effect of Se, the electron confinement effect, and the surface-to-volume ratio possessed by Pt. Examination of the structure and morphology highlights the physical and chemical properties of the Pt/Se catalyst, as revealed by different physicochemical characterization techniques. From these characterizations, we identified a dual-functional electrocatalyst Pt/Se for electrochemical detection of 17β-estradiol (E2) and methanol oxidation. When used for the electrochemical detection of estradiol, the Pt/Se catalyst displays an excellent response toward electro-oxidation of estradiol in the linear sweep voltammetry (LSV) and the amperometry-it technique. The proposed sensor utilizes a concentration range that varies from 0.05 to 85.5 μM with good sensitivity (0.0376 mA μM–1 cm–2), a lower limit of detection (LOD) being 11.12 nmol L–1, and the limit of quantitation (LOQ) being 36.06 nmol L–1. It yields lower detection limits (LODs: 13.17 and 17.04 nmol L–1) even on detecting estradiol in environmental water samples (river and tap water samples) at a buffered pH of 7.0. In the methanol oxidation reaction (MOR), the Pt/Se catalyst displays a good mass activity and turnover number (TON) of 2.37 A/mg and 1.36 s–1, respectively, by cyclic voltammetry and chronoamperometry. As a result, the prepared Pt/Se electrocatalyst, has provided a creditable combination of stability, electron transfer rate, conductivity, and dual applicability to the electrochemical sensor and the methanol oxidation fuel cell for the first time.

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Selenium functionalized carbon for high dispersion of platinum–ruthenium nanoparticles and its effect on the electrocatalytic oxidation of methanol

Cited by 20 publications

References 31 publications

Toward high performance of zinc-air battery using hydrophobic carbon foam-based diffusion electrode

Toward high performance of zinc-air battery using hydrophobic carbon foam-based diffusion electrode

Microbial-Based Bioremediation of Selenium and Tellurium Compounds

Pt Nanoparticle-Decorated Se Rods for Electrochemical Detection of 17β-Estradiol and Methanol Oxidation

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