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  • Royal Society of Chemistry (RSC)  (26)
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Verlag/Herausgeber
  • Royal Society of Chemistry (RSC)  (26)
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Erscheinungszeitraum
  • 11
    Online-Ressource
    Online-Ressource
    Royal Society of Chemistry (RSC) ; 2022
    In:  CrystEngComm Vol. 24, No. 36 ( 2022), p. 6421-6428
    In: CrystEngComm, Royal Society of Chemistry (RSC), Vol. 24, No. 36 ( 2022), p. 6421-6428
    Kurzfassung: Transition metal phosphides have been widely used as electrocatalysts for water splitting. In particular, cobalt phosphide electrocatalysts play an important part in the oxygen evolution reaction. Here, two kinds of CoP with different nanostructures, CoP-MA and CoP-GC (MA = methylamine and GC = guanidine carbonate), were successfully prepared by a two-step method, including calcination of the corresponding Co-based metal formate frameworks, [Amine][Co(HCOO) 3 ] (Amine = CH 3 NH 3 and C(NH 2 ) 3 ), in air and the subsequent low temperature phosphating process. As OER catalysts, the CoP nanostructures show strong electrochemical structure-dependent properties. Electrochemical tests show that nanoparticle based CoP-MA micro-cubes required an overpotential of 340 mV at a current density of 10 mA cm −2 , while nanosheet based CoP-GC micro-cubes only required an overpotential of 310 mV at the same current density. Importantly, the two CoP micro-cubes have a similar morphology but different structures, providing a direct side-by-side evaluation of their OER activities. The comparisons of the same metal phosphide OER catalysts with the same morphology but different structures are of great significance in identifying the key material characteristics that lead to high activity.
    Materialart: Online-Ressource
    ISSN: 1466-8033
    Sprache: Englisch
    Verlag: Royal Society of Chemistry (RSC)
    Publikationsdatum: 2022
    ZDB Id: 2025075-7
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 12
    Online-Ressource
    Online-Ressource
    Royal Society of Chemistry (RSC) ; 2022
    In:  Lab on a Chip Vol. 22, No. 20 ( 2022), p. 3910-3919
    In: Lab on a Chip, Royal Society of Chemistry (RSC), Vol. 22, No. 20 ( 2022), p. 3910-3919
    Kurzfassung: Oblique-incidence reflectivity difference (OIRD) is a novel optical technique for protein microarray detection with the characteristics of being real-time, label-free, high-throughput and compatible with arbitrary chip substrates. It is necessary yet challenging to improve the sensitivity of the OIRD microarray and gain a clear understanding of the enhancement mechanism for practical applications. In this study, we report a microarray chip specifically designed for OIRD to improve its sensitivity by using an electrochemically etched nanostructured fluorine-doped tin oxide (FTO) slide as the substrate. Compared with chips printed on a conventional glass slide and pristine FTO, the OIRD sensitivity and signal-to-noise ratio of this microarray are significantly improved, reaching a limit of detection (LOD) as low as 50 ng mL −1 for the streptavidin target in 10% human serum, which is one order of magnitude lower than that of the glass-based chip. On-chip ELISA and theoretical calculation reveal that the enhanced sensitivity is not only because of its higher capture efficiency towards the target, but also benefits from the optical enhancement enabled by its unique nanostructured sensing interface. This work provides a new universal strategy for designing high performance OIRD-based chips via rational interfacial engineering, thus paving the way to a label-free OIRD immunoassay and real-time analysis of biomolecular interactions.
    Materialart: Online-Ressource
    ISSN: 1473-0197 , 1473-0189
    Sprache: Englisch
    Verlag: Royal Society of Chemistry (RSC)
    Publikationsdatum: 2022
    ZDB Id: 2056646-3
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 13
    Online-Ressource
    Online-Ressource
    Royal Society of Chemistry (RSC) ; 2020
    In:  Polymer Chemistry Vol. 11, No. 10 ( 2020), p. 1702-1707
    In: Polymer Chemistry, Royal Society of Chemistry (RSC), Vol. 11, No. 10 ( 2020), p. 1702-1707
    Materialart: Online-Ressource
    ISSN: 1759-9954 , 1759-9962
    Sprache: Englisch
    Verlag: Royal Society of Chemistry (RSC)
    Publikationsdatum: 2020
    ZDB Id: 2528812-X
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 14
    In: New Journal of Chemistry, Royal Society of Chemistry (RSC), Vol. 48, No. 11 ( 2024), p. 4699-4707
    Kurzfassung: We first constructed a new type of two-dimensional nanoribbon material by splicing a C 2 N-h2D nanoribbon with a BN nanoribbon, which is called the C 2 N-h2D/BN nanoribbon. The electronic properties of the C 2 N-h2D/BN nanoribbon were investigated using first-principles calculations, and its thermodynamic stability was verified through molecular dynamics simulations, demonstrating its dynamic stability at room temperature. Through analysis of the band structure, density of states, and charge density plots, we found that it is a nonmagnetic direct narrow bandgap semiconductor. To manipulate its electronic structure, we adsorbed transition metal atoms Mn, Fe, Co, and Ni into the nanoribbon. By analyzing the band structure and density of states after adsorption, we observed that the properties of the nanoribbon transitioned from a semiconductor to a metal upon adsorption of Mn, Co, and Ni atoms. Interestingly, after the adsorption of Fe atoms, the C 2 N-h2D/BN nanoribbon transformed from a semiconductor to a half-metal, indicating the generation of 100% spin-polarized current at the Fermi level and improved the electronic performance of the nanoribbon. This finding is exciting as it demonstrates that adsorption of different transition metal atoms can control the physicochemical properties of the nanoribbon, particularly the generation of 100% spin-polarized current at the Fermi level. This provides promising prospects for the application of this two-dimensional nanomaterial in spintronic devices and magnetic storage devices.
    Materialart: Online-Ressource
    ISSN: 1144-0546 , 1369-9261
    Sprache: Englisch
    Verlag: Royal Society of Chemistry (RSC)
    Publikationsdatum: 2024
    ZDB Id: 1472933-7
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 15
    Online-Ressource
    Online-Ressource
    Royal Society of Chemistry (RSC) ; 2022
    In:  Journal of Materials Chemistry B Vol. 10, No. 44 ( 2022), p. 9266-9279
    In: Journal of Materials Chemistry B, Royal Society of Chemistry (RSC), Vol. 10, No. 44 ( 2022), p. 9266-9279
    Kurzfassung: Nanotechnology-mediated drug delivery systems suffer from insufficient retention in tumor tissues and unreliable drug release at specific target sites. Herein, we developed an epidermal growth factor receptor-targeted multifunctional micellar nanoplatform (GE11-DOX+CEL-M) by encapsulating celecoxib into polymeric micelles based on the conjugate of GE11-poly(ethylene glycol)- b -poly(trimethylene carbonate) with doxorubicin to suppress tumor growth and metastasis. The polymeric micelles maintained stable nanostructures under physiological conditions but quickly disintegrated in a weakly acidic environment, which is conducive to controlled drug release. Importantly, GE11-DOX+CEL-M micelles effectively delivered the drug combination to tumor sites and enhanced tumor cell uptake through GE11-mediated active tumor targeting. Subsequently, GE11-DOX+CEL-M micelles dissociated in response to intracellular slightly acidic microenvironmental stimuli, resulting in rapid release of celecoxib and doxorubicin to synergistically inhibit the proliferation and migration of tumor cells. Systemic administration of GE11-DOX+CEL-M micelles into mice bearing subcutaneous 4T1 tumor models resulted in higher tumor growth suppression and decreased lung metastasis of tumor cells compared with micelles without GE11 decoration or delivering only doxorubicin. Furthermore, the micelles effectively reduced the systemic toxicity of the chemotherapy drugs. This nanotherapeutic system provides a promising strategy for safe and effective cancer therapy.
    Materialart: Online-Ressource
    ISSN: 2050-750X , 2050-7518
    Sprache: Englisch
    Verlag: Royal Society of Chemistry (RSC)
    Publikationsdatum: 2022
    ZDB Id: 2702241-9
    ZDB Id: 2705149-3
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 16
    Online-Ressource
    Online-Ressource
    Royal Society of Chemistry (RSC) ; 2022
    In:  Journal of Materials Chemistry A Vol. 10, No. 31 ( 2022), p. 16547-16554
    In: Journal of Materials Chemistry A, Royal Society of Chemistry (RSC), Vol. 10, No. 31 ( 2022), p. 16547-16554
    Kurzfassung: As promising energy harvesters, triboelectric nanogenerators (TENGs) can be widely used in the efficient harvesting of ubiquitous mechanical energy into electric power. However, the continuous fabrication of high-performance triboelectric nanogenerators is still a challenge. Here, with the roll-to-roll process, we report the continuous fabrication of a high-performance triboelectric nanogenerator by ultrafast UV-induced linking of the triboelectric layer to the conductive substrate. Benefiting from the grafting of the methacrylate functional group onto polydimethylsiloxane (PDMS), methacrylate-functionalized PDMS (MAPDMS) can be polymerized under UV light. By introducing fluorine-containing silane to enhance electronegativity, fluorine MAPDMS (MAPDMS-F) can achieve a high surface charge density of 249 μC m −2 , which is nearly double that of MAPDMS. Moreover, MAPDMS-F can also be used as a water resistance layer and combined with an interdigital electrode to harvest raindrop energy. This work not only provides an easy way to overcome a major bottleneck in the production of high-performance TENGs but also provides significant guidance on the design of the triboelectric layer.
    Materialart: Online-Ressource
    ISSN: 2050-7488 , 2050-7496
    Sprache: Englisch
    Verlag: Royal Society of Chemistry (RSC)
    Publikationsdatum: 2022
    ZDB Id: 2702232-8
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 17
    In: Journal of Materials Chemistry A, Royal Society of Chemistry (RSC), Vol. 11, No. 24 ( 2023), p. 12837-12845
    Kurzfassung: Graphitic carbon nitrides (g-C 3 N 4 ) with unique physicochemical properties are promising candidates for photocatalysis applications. However, pristine g-C 3 N 4 often suffers from narrow absorption ranges and high carrier recombination rates, which result in mediocre catalytic performance. In this work, we prepare novel sulfur-doped high nitrogen containing carbon nitrides, C 3 N 5 (SCNs), with a combined thiadiazole, triazole, and triazine framework by facile self-assembly of 5-amino-1,3,4-thiadiazole-2-thiol (5-ATDT). Their structural, morphological, and optical properties, and photocatalytic activities are investigated in detail. From density functional theory calculations and spectroscopic characterization studies, we construct thermodynamically stable molecular structures of SCNs composed of one triazole and two triazine moieties with small ratios of thiadiazole on the edge, in which the sulfur atoms are ionically connected with carbon/nitrogen atoms and gradually detached on increasing the calcination temperatures. Remarkably, the resultant SCNs exhibit a significantly enhanced H 2 -generation rate of 486 μmol g −1 h −1 , about 60% higher than the average value derived from typical g-C 3 N 4 synthesised by conventional precursors thanks to the enlarged light absorption range and enhanced charge carrier transfer rate. Our work provides a unique approach for designing novel sulfur-doped carbon nitrides with unprecedented functionalities.
    Materialart: Online-Ressource
    ISSN: 2050-7488 , 2050-7496
    Sprache: Englisch
    Verlag: Royal Society of Chemistry (RSC)
    Publikationsdatum: 2023
    ZDB Id: 2702232-8
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 18
    Online-Ressource
    Online-Ressource
    Royal Society of Chemistry (RSC) ; 2018
    In:  RSC Advances Vol. 8, No. 10 ( 2018), p. 5127-5135
    In: RSC Advances, Royal Society of Chemistry (RSC), Vol. 8, No. 10 ( 2018), p. 5127-5135
    Materialart: Online-Ressource
    ISSN: 2046-2069
    Sprache: Englisch
    Verlag: Royal Society of Chemistry (RSC)
    Publikationsdatum: 2018
    ZDB Id: 2623224-8
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 19
    Online-Ressource
    Online-Ressource
    Royal Society of Chemistry (RSC) ; 2023
    In:  Lab on a Chip Vol. 23, No. 10 ( 2023), p. 2477-2486
    In: Lab on a Chip, Royal Society of Chemistry (RSC), Vol. 23, No. 10 ( 2023), p. 2477-2486
    Kurzfassung: Oblique-incidence reflectivity difference (OIRD) is a compelling technique for real-time, label-free and non-destructive detection of antibody microarray chips, but its sensitivity needs essential improvement for clinical diagnosis. In this study, we report an innovative high-performance OIRD microarray by using poly[oligo(ethylene glycol) methacrylate- co -glycidyl methacrylate] (POEGMA- co -GMA) brush grafted fluorine-doped tin oxide (FTO) as the chip substrate. The polymer brush enhances the interfacial binding reaction efficiency of targets from the complicated sample matrix due to its high antibody loading and excellent anti-fouling merits; the FTO-polymer brush layered structure, on the other hand, excites the interference enhancement effect of OIRD to achieve enhanced intrinsic optical sensitivity. Synergistically, the sensitivity of this chip is significantly improved compared to rival chips, achieving a limit of detection (LOD) as low as 25 ng mL −1 for the model target C-reactive protein (CRP) in 10% human serum. This work explores the tremendous influence of the chip interfacial structure on the OIRD sensitivity and proposes a rational interfacial engineering strategy to boost the performance of the label-free OIRD based microarray and other bio-devices.
    Materialart: Online-Ressource
    ISSN: 1473-0197 , 1473-0189
    Sprache: Englisch
    Verlag: Royal Society of Chemistry (RSC)
    Publikationsdatum: 2023
    ZDB Id: 2056646-3
    SSG: 12
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 20
    Online-Ressource
    Online-Ressource
    Royal Society of Chemistry (RSC) ; 2022
    In:  Energy & Environmental Science Vol. 15, No. 3 ( 2022), p. 1334-1345
    In: Energy & Environmental Science, Royal Society of Chemistry (RSC), Vol. 15, No. 3 ( 2022), p. 1334-1345
    Kurzfassung: The rapid development of the Internet of Things and artificial intelligence has led to an increase in attention focused on distributed power sources such as triboelectric nanogenerators (TENGs), however, enhancing the energy output from TENGs is crucial for their large-scale application. Here, a constant-voltage TENG (CV-TENG) based on a phase-shift design is presented to enhance the energy output via converting a conventional pulse-voltage output into a constant-voltage one and decreasing the crest factor to 1.03. The average power is unexpectedly increased 1.9-fold compared with that of a pulse-voltage TENG (PV-TENG) without a phase-shift design. The energy enhancement is even more than 3-fold under a capacitance load in response to a low-frequency input. Furthermore, the dynamic process of charge transfer under a capacitance load is revealed, which gives a theoretical guide to improving the energy-output efficiency of a TENG toward 100%. This work provides a paradigm shift when it comes to achieving high-efficiency CV-TENGs, and it is of great importance for the acceptance of TENGs as a major form of energy technology.
    Materialart: Online-Ressource
    ISSN: 1754-5692 , 1754-5706
    Sprache: Englisch
    Verlag: Royal Society of Chemistry (RSC)
    Publikationsdatum: 2022
    ZDB Id: 2439879-2
    Standort Signatur Einschränkungen Verfügbarkeit
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