In situ spontaneous redox synthesis of carbon nanotubes/copper oxide nanocomposites and their preliminary application in electrocatalytic reduction of nitrate

Pan, Dawei; Lü, Wenjing; Wu, Shaohua; Zhang, Haiyun; Qin, Wei

doi:10.1016/j.matlet.2012.09.004

Cited by 10 publications

(4 citation statements)

References 13 publications

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“…Yu-Wei Hsu and co-workers 15 have studied the electrochemical detection of glucose using a copper oxide/graphene-modified glassy carbon electrode. High electrocatalytic activity for nitrite detection in aqueous media was reported in the copper oxide modified carbon powder – epoxy composite electrodes 16 , a copper oxide/carbon nanotube nanocomposite for the electrocatalytic reduction of nitrates was proposed 17 , and a modified nano-sized copper oxide/multi-wall carbon nanotubes/Nafion composite film–modified electrode was fabricated which showed a sensitive and selective determination of dopamine 18 . Generally, the preparation of the copper oxide/carbon nanocomposites includes electrolytic process synthesis of copper oxide and its mixture with the chosen carbon nanomaterials (such as graphene, graphene oxide, nanotubes and graphite) at the required volume 12 13 14 15 16 17 18 .…”

mentioning

confidence: 99%

Non-electrolytic synthesis of copper oxide/carbon nanocomposite by surface plasma in super-dehydrated ethanol

Kozak

Sergiienko

Shibata

et al. 2016

Sci Rep

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Electrolytic processes are widely used to synthesize different nanomaterials and it does not depend on what kind of the method has been applied (wet-chemistry, sonochemistry, plasma chemistry, electrolysis and so on). Generally, the reactions in the electrolyte are considered to be reduction/oxidation (REDOX) reactions between chemical reagents or the deposition of matter on the electrodes, in line with Faraday’s law. Due to the presence of electroconductive additives in any electrolyte, the polarization effect of polar molecules conducting an electrical current disappears, when external high-strength electric field is induced. Because initially of the charge transfer always belongs of electroconductive additive and it does not depend on applied voltage. The polarization of ethanol molecules has been applied to conduct an electric current by surface plasma interaction for the synthesis of a copper oxide/carbon nanocomposite material.

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mentioning

confidence: 99%

Non-electrolytic synthesis of copper oxide/carbon nanocomposite by surface plasma in super-dehydrated ethanol

Kozak

Sergiienko

Shibata

et al. 2016

Sci Rep

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“…(Pt 10 /C)还原硝酸根通过吸附和电化学还原的共同作用硝酸盐去除效果增强 [73] . 碳纳米管具有机械强度高、比表面积大、导电性良好且稳定性强的特点, 将CuO x 均匀分散到碳纳米管表面形成的电极显示出极好的电化学活性 [74] . 将PdSn负载到活性炭纤维上, 增大电极的比表面积使活性位点增多, 最终硝酸盐的去除率达到 96%以上 [75] .…”

Section: 铂族金属铂族金属耐蚀性强、电催化活性高既可用作阳极又可用作阴极电催化还原硝酸根活性顺序为unclassified

Electrochemical method to remove nitrate in high-salt water

Gu¹,

Li²,

Chen³

et al. 2020

Chin. Sci. Bull.

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“…However, electrochemical process of NO 3 − at the common electrodes is rather slow and produces high overpotentials. To overcome this issue, researchers have focused on the exploitation of various nanomaterials, such as metal nanoparticles [20], carbon nanotubes/fibers [21], and graphene-based materials [22]. Copper nanoparticles (CuNPs) have been reported as an effective electrocatalytic material for NO 3 − and nitrite (NO 2 − ) reduction and have been combined with other carbonaceous materials for the sensitive determination of NO 3 − and NO 2 − [23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Copper Nanoparticles Confined in a Silica Nanochannel Film for the Electrochemical Detection of Nitrate Ions in Water Samples

Li,

Xu,

Jin

et al. 2023

Molecules

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The nitrate ion (NO3−) is a typical pollutant in environmental samples, posing a threat to the aquatic ecosystem and human health. Therefore, rapid and accurate detection of NO3− is crucial for both the aquatic sciences and government regulations. Here we report the fabrication of an amino-functionalized, vertically ordered mesoporous silica film (NH2-VMSF) confining localized copper nanoparticles (CuNPs) for the electrochemical detection of NO3−. NH2-VMSF-carrying amino groups possess an ordered perpendicular nanochannel structure and ultrasmall nanopores, enabling the confined growth of CuNPs through the electrodeposition method. The resulting CuNPs/NH2-VMSF-modified indium tin oxide (ITO) electrode (CuNPs/NH2-VMSF/ITO) combines the electrocatalytic reduction ability of CuNPs and the electrostatic attraction capacity of NH2-VMSF towards NO3−. Thus, it is a rapid and sensitive electrochemical method for the determination of NO3− with a wide linear detection range of 5.0–1000 μM and a low detection limit of 2.3 μM. Direct electrochemical detection of NO3− in water samples (tap water, lake water, seawater, and rainwater) with acceptable recoveries ranging from 97.8% to 109% was performed, demonstrating that the proposed CuNPs/NH2-VMSF/ITO sensor has excellent reproducibility, regeneration, and anti-interference abilities.

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In situ spontaneous redox synthesis of carbon nanotubes/copper oxide nanocomposites and their preliminary application in electrocatalytic reduction of nitrate

Cited by 10 publications

References 13 publications

Non-electrolytic synthesis of copper oxide/carbon nanocomposite by surface plasma in super-dehydrated ethanol

Non-electrolytic synthesis of copper oxide/carbon nanocomposite by surface plasma in super-dehydrated ethanol

Electrochemical method to remove nitrate in high-salt water

Copper Nanoparticles Confined in a Silica Nanochannel Film for the Electrochemical Detection of Nitrate Ions in Water Samples

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