Size controllable preparation of gold nanoparticles loading on graphene sheets@cerium oxide nanocomposites modified gold electrode for nonenzymatic hydrogen peroxide detection

Yang, Xin; Ouyang, Yongzhong; Wu, Feng; Hu, Yadong; Ji, Yang; Wu, Zhaoyang

doi:10.1016/j.snb.2016.07.016

Cited by 83 publications

(38 citation statements)

References 40 publications

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“…In the present study, we have constructed the AgNPs-rGO-PANI nanocomposite as a simple electrochemical sensor towards the sensitive and selective detection of H 2 …”

Section: Discussionmentioning

confidence: 99%

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Enhanced electron transfer mediated detection of hydrogen peroxide using a silver nanoparticle–reduced graphene oxide–polyaniline fabricated electrochemical sensor

et al. 2018

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The current study aims at the development of an electrochemical sensor based on a silver nanoparticlereduced graphene oxide-polyaniline (AgNPs-rGO-PANI) nanocomposite for the sensitive and selective detection of hydrogen peroxide (H 2 O 2 ). The nanocomposite was fabricated by simple in situ synthesis of PANI at the surface of rGO sheet which was followed by stirring with AEC biosynthesized AgNPs to form a nanocomposite. The AgNPs, GO, rGO, PANI, rGO-PANI, and AgNPs-rGO-PANI nanocomposite and their interaction were studied by UV-vis, FTIR, XRD, SEM, EDX and XPS analysis. AgNPs-rGO-PANI nanocomposite was loaded (0.5 mg cm À2 ) on a glassy carbon electrode (GCE) where the active surface area was maintained at 0.2 cm 2 for investigation of the electrochemical properties. It was found thatAgNPs-rGO-PANI-GCE had high sensitivity towards the reduction of H 2 O 2 than AgNPs-rGO which occurred at À0.4 V vs. SCE due to the presence of PANI (AgNPs have direct electronic interaction with N atom of the PANI backbone) which enhanced the rate of transfer of electron during the electrochemical reduction of H 2 O 2 . The calibration plots of H 2 O 2 electrochemical detection was established in the range of 0.01 mM to 1000 mM (R 2 ¼ 0.99) with a detection limit of 50 nM, the response time of about 5 s at a signal-to-noise ratio (S/N ¼ 3). The sensitivity was calculated as 14.7 mA mM À1 cm À2 which indicated a significant potential as a non-enzymatic H 2 O 2 sensor.

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“…In the present study, we have constructed the AgNPs-rGO-PANI nanocomposite as a simple electrochemical sensor towards the sensitive and selective detection of H 2 …”

Section: Discussionmentioning

confidence: 99%

“…1,2 It is created during oxidative stress in cells, the concentration of which may be used as a primary indicator of reaction. In addition to this, H 2 O 2 is also produced as a by-product of several enzymecatalysed reactions such as cholesterol oxidase, glucose oxidase, glutamate oxidase, lactate oxidase etc.…”

Section: Introductionmentioning

confidence: 99%

Enhanced electron transfer mediated detection of hydrogen peroxide using a silver nanoparticle–reduced graphene oxide–polyaniline fabricated electrochemical sensor

et al. 2018

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“…In recent years, the progress of nanotechnology has promoted advances in the field of manufacturing of the H 2 O 2 electrochemical sensors. For example, carbon nanotubes and graphene can be used either as substrates with high specific areas for catalytic materials or as electrocatalysts by themselves (Šljukič et al, 2006;Pogacean et al, 2015;Wu et al, 2017;Yang et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Thin-film SnO<sub>2</sub> and ZnO detectors of hydrogen peroxide vapors

Aroutiounian

Arakelyan

Aleksanyan

et al. 2018

J. Sens. Sens. Syst.

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Abstract. Thin-film hydrogen peroxide vapor sensors made from Co-doped SnO 2 and La-doped ZnO were manufactured using the high-frequency magnetron sputtering method. Thicknesses of deposited doped metal oxide films were measured and their morphology was investigated. The gas sensing characteristics of the prepared sensors were measured at different concentrations of hydrogen peroxide vapors and different operating temperatures of the sensor. It was found that both sensors made from doped metal oxides SnO 2 and ZnO exhibit a sufficient response to 10 ppm of hydrogen peroxide vapors at the 200 and 220 • C operating temperature, respectively. It was established that the dependencies of the response on hydrogen peroxide vapor concentration have a linear character for prepared structures at the 150 • C operating temperature and can be used for determination of hydrogen peroxide vapor concentration.

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“…Dissolved LiPs necessarily diffuse through the membranes during electrochemical processes in the cell, and therefore, a variety of approaches to modify the separator have been explored to improve conductivity and impede LiP shuttling. Carbon materials, such as carbon black [8], graphene [9], reduced graphene (RGO) [10,11], multiwall carbon nanotubes (MWCNTs) [12], and microporous carbon paper [13] have been developed as sulfur hosts because of their abundant advantages: (1) their large specific surface area and intricate web structure, which contribute to physical LiP trapping; (2) their excellent electrical conductivity, which acts as an "upper current" collector to reuse the LiPs as a consequence and compensate for the rapid capacity decline; (3) their flexible mechanical strength, which accommodates volume changes. Zhu [14] et al coated carbon on a separator and achieved marked cycle life with a capacity of 956 mAh g -1 after the 200th charge/discharge test and excellent rate performance of the Li/S battery.…”

Section: Introductionmentioning

confidence: 99%

ZnO Nanoparticles Anchored on a N-Doped Graphene-Coated Separator for a High Performance Lithium/Sulfur Battery

Wang¹,

Gao²,

Ma³

et al. 2018

Preprint

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Fabrication of a nanocrystal zinc oxide (ZnO)/nitrogen-doped (N-doped) graphene composite using a novel and facile in situ sol-gel technique is demonstrated. Two-dimensional nanostructure morphology with uniform ZnO nanoparticles (average diameter of 10.25 nm) anchored on N-doped graphene nanosheets was observed via electron microscopy. Because of the polar heteroatoms on the graphene sheets, an abundance sites for polysulfide absorption were provided. More importantly, the strong chemical interaction between ZnO and polysulfides efficiently hindered the transport of polysulfides. Consequently, the lithium/sulfur (Li/S) battery with the ZnO/N-doped graphene composite-coated separator delivered enhanced performance in terms of discharge capacity and cycling stability when compared to the cell with a normal separator. With the modified separator, the battery achieved a discharge capacity as high as 942 mAh g -1 for the first cycle and remained at 90.02 mAh g -1 after the 100th charge/discharge test at 0.1 C. Results indicate that impeding the shuttling of polysulfides contributes to efficiently improving the behavior of the Li/S battery. 4 of 9 associated with ionized pyridine N [28]. Peaks at 399.9 eV and 400.6 eV correspond to pyrrolic N (a nitrogen atom in a five-membered ring). The peak at 401.1 eV is attributed to graphitic N. From the Zn 2p spectrum (Fig. 2d), the peak with binding energy at 1021.9 eV is assigned to ZnO 2p 3/2, and peaks at 1044.7 eV and 1045.5 eV are indexed to ZnO 2p 1/2. All of these results indicate that the 2D ZnO/NDG composite interaction architecture was successfully fabricated using the simple in situ sol-gel technique. Interestingly, when comparing Fig. 2d with Fig. 2e, it can be seen that the peak at 1021.9 eV (ZnO 2p 3/2) before cycling was split into two peaks at 1021.9 eV (ZnSO4 2p 3/2) and 1022.0 eV (ZnS 2p 3/2) after cycling; this confirms the chemical interaction between ZnO and LiPs. Peaks located at 1044.7 eV and 1045.5 eV before cycling were negatively shifted to 1044.7 eV and 1045.5 eV, respectively, after cycling, and this corresponds to the absorption of sulfur-related species by the Zn-O bonding. In the S 2p spectrum after cycling (Fig. 2f), the peak centered at 168.3 eV can be assigned to sulfate, and the peaks at 169.0 eV, 169.9 eV, and 170.7 eV are related to metal-SO4 2species, which is in good accordance with the results of the Zn 2p spectrum after cycling.Preprints (www.preprints.org) | NOT PEER-REVIEWED | Posted:

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Size controllable preparation of gold nanoparticles loading on graphene sheets@cerium oxide nanocomposites modified gold electrode for nonenzymatic hydrogen peroxide detection

Cited by 83 publications

References 40 publications

Enhanced electron transfer mediated detection of hydrogen peroxide using a silver nanoparticle–reduced graphene oxide–polyaniline fabricated electrochemical sensor

Enhanced electron transfer mediated detection of hydrogen peroxide using a silver nanoparticle–reduced graphene oxide–polyaniline fabricated electrochemical sensor

Thin-film SnO<sub>2</sub> and ZnO detectors of hydrogen peroxide vapors

ZnO Nanoparticles Anchored on a N-Doped Graphene-Coated Separator for a High Performance Lithium/Sulfur Battery

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Size controllable preparation of gold nanoparticles loading on graphene sheets@cerium oxide nanocomposites modified gold electrode for nonenzymatic hydrogen peroxide detection

Cited by 83 publications

References 40 publications

Enhanced electron transfer mediated detection of hydrogen peroxide using a silver nanoparticle–reduced graphene oxide–polyaniline fabricated electrochemical sensor

Enhanced electron transfer mediated detection of hydrogen peroxide using a silver nanoparticle–reduced graphene oxide–polyaniline fabricated electrochemical sensor

Thin-film SnO&lt;sub&gt;2&lt;/sub&gt; and ZnO detectors of hydrogen peroxide vapors

ZnO Nanoparticles Anchored on a N-Doped Graphene-Coated Separator for a High Performance Lithium/Sulfur Battery

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Thin-film SnO<sub>2</sub> and ZnO detectors of hydrogen peroxide vapors