Cost-effective three dimensional Ag/polymer dyes/graphene-carbon spheres hybrids for high performance nonenzymatic sensor and its application in living cell H2O2 detection

Lu, Baoping; Yuan, Xuna; Ren, Yuehong; Shi, Qinghua; Wang, Song; Jin-long, Dong; Nan, Ze-Dong

doi:10.1016/j.bioelechem.2018.05.001

Cited by 28 publications

(11 citation statements)

References 50 publications

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“…Moreover, the HCSs retain a spherical morphology without obvious damage or wrinkled textures following GO coating on the surface of the HCS. The present GO/HCS composites are preferable to the previously reported polydopamine sphere/GO composites, which showed wrinkled carbon spheres after GO coating (13). The current results reveal that KOH-activated cellulose-based carbon spheres can effectively prevent graphene aggregation and lead to the successful fabrication of novel GO/HCS composites.…”

Section: Fabrication and Characterization Of Go/hcs Compositesmentioning

confidence: 52%

“…We surmised that hierarchical nanoporous membranes (HNMs) structures ( Fig. 1C ) could be assembled wherein carbon spheres serve as effective “nanoporous spacers” and substantially improve cross-plane mass transfer via expanded interlayer spacing, while the agglomeration and stacking of spheres are alleviated via the use of pure GO membranes ( 13 ) that bind strongly to the spheres. In imagining this construct, we were mindful that these carbon spheres must present an array of pore sizes, such as the “Murray’s law” ( 14 ) hierarchy, and could be derived and processed sustainably.…”

Section: Introductionmentioning

confidence: 99%

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Designing hierarchical nanoporous membranes for highly efficient gas adsorption and storage

et al. 2020

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Nanoporous membranes with two-dimensional materials such as graphene oxide have attracted attention in volatile organic compounds (VOCs) and H2 adsorption because of their unique molecular sieving properties and operational simplicity. However, agglomeration of graphene sheets and low efficiency remain challenging. Therefore, we designed hierarchical nanoporous membranes (HNMs), a class of nanocomposites combined with a carbon sphere and graphene oxide. Hierarchical carbon spheres, prepared following Murray’s law using chemical activation incorporating microwave heating, act as spacers and adsorbents. Hierarchical carbon spheres preclude the agglomeration of graphene oxide, while graphene oxide sheets physically disperse, ensuring structural stability. The obtained HNMs contain micropores that are dominated by a combination of ultramicropores and mesopores, resulting in high VOCs/H2 adsorption capacity, up to 235 and 352 mg/g at 200 ppmv and 3.3 weight % (77 K and 1.2 bar), respectively. Our work substantially expands the potential for HNMs applications in the environmental and energy fields.

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Section: Fabrication and Characterization Of Go/hcs Compositesmentioning

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Designing hierarchical nanoporous membranes for highly efficient gas adsorption and storage

et al. 2020

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“…This is attributed to the combination between the remarkable physicochemical properties of BP-PS-PPy and outstanding catalytic and optical properties of Ag NPs [54,55]. Mainly, the exfoliated BP-PS-PPy nanosheets provide various adsorptions and active sites for H 2 O 2 , which maximize the utilization of Ag NPs during H 2 O 2 reduction [56,57]. Meanwhile, the synergistic and electronic interaction between Ag NPs and BP-PS-PPy originates various accessible active sites for H 2 O 2 reduction as well as produces oxygenated species which accelerates the reduction kinetics at low overpotentials.…”

Section: Resultsmentioning

confidence: 99%

Novel Enzyme-Free Multifunctional Bentonite/Polypyrrole/Silver Nanocomposite Sensor for Hydrogen Peroxide Detection over a Wide pH Range

Jlassi

Sliem

Eid

et al. 2019

Sensors

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Precise designs of low-cost and efficient catalysts for the detection of hydrogen peroxide (H2O2) over wide ranges of pH are important in various environmental applications. Herein, a versatile and ecofriendly approach is presented for the rational design of ternary bentonite-silylpropyl-polypyrrole/silver nanoarchitectures (denoted as BP-PS-PPy/Ag) via the in-situ photo polymerization of pyrrole with salinized bentonite (BP-PS) in the presence of silver nitrate. The Pyrrolyl-functionalized silane (PS) is used as a coupling agent for tailoring the formation of highly exfoliated BP-PS-PPy sheet-like nanostructures ornamented with monodispersed Ag nanoparticles (NPs). Taking advantage of the combination between the unique physicochemical properties of BP-PS-PPy and the outstanding catalytic merits of Ag nanoparticles (NPs), the as-synthesized BP-PS-PPy/Ag shows a superior electrocatalytic reduction and high-detection activity towards H2O2 under different pH conditions (from 3 to 10). Intriguingly, the UV-light irradiation significantly enhances the electroreduction activity of H2O2 substantially, compared with the dark conditions, due to the high photoelectric response properties of Ag NPs. Moreover, BP-PS-PPy/Ag achived a quick current response with a detection limit at 1 μM within only 1 s. Our present approach is green, facile, scalable and renewable.

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“…Amperometric measurements in PBS solution at pH 6.5 revealed a linear response in the range of 60 µM to 100 mM with a LOD of 36.7 µM of H 2 O 2 . Poly (methylene blue) (PMB), Ag nanocrystals (AgNCs), and graphene carbon spheres (GS) nanocomposite on glassy carbon electrode (Ag/PMB/GS/GCE) were used for hydrogen peroxide detection [204]. GS had a wrinkled texture, showing a rough surface with pores that favor electron transport.…”

Section: Non-enzymatic Sensorsmentioning

confidence: 99%

Electrochemical Sensors Based on Conducting Polymers for the Aqueous Detection of Biologically Relevant Molecules

et al. 2021

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Electrochemical sensors appear as low-cost, rapid, easy to use, and in situ devices for determination of diverse analytes in a liquid solution. In that context, conducting polymers are much-explored sensor building materials because of their semiconductivity, structural versatility, multiple synthetic pathways, and stability in environmental conditions. In this state-of-the-art review, synthetic processes, morphological characterization, and nanostructure formation are analyzed for relevant literature about electrochemical sensors based on conducting polymers for the determination of molecules that (i) have a fundamental role in the human body function regulation, and (ii) are considered as water emergent pollutants. Special focus is put on the different types of micro- and nanostructures generated for the polymer itself or the combination with different materials in a composite, and how the rough morphology of the conducting polymers based electrochemical sensors affect their limit of detection. Polypyrroles, polyanilines, and polythiophenes appear as the most recurrent conducting polymers for the construction of electrochemical sensors. These conducting polymers are usually built starting from bifunctional precursor monomers resulting in linear and branched polymer structures; however, opportunities for sensitivity enhancement in electrochemical sensors have been recently reported by using conjugated microporous polymers synthesized from multifunctional monomers.

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Cost-effective three dimensional Ag/polymer dyes/graphene-carbon spheres hybrids for high performance nonenzymatic sensor and its application in living cell H2O2 detection

Cited by 28 publications

References 50 publications

Designing hierarchical nanoporous membranes for highly efficient gas adsorption and storage

Designing hierarchical nanoporous membranes for highly efficient gas adsorption and storage

Novel Enzyme-Free Multifunctional Bentonite/Polypyrrole/Silver Nanocomposite Sensor for Hydrogen Peroxide Detection over a Wide pH Range

Electrochemical Sensors Based on Conducting Polymers for the Aqueous Detection of Biologically Relevant Molecules

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