Aggregation of Giant Cerium–Bismuth Tungstate Clusters into a 3D Porous Framework with High Proton Conductivity

Liu, Jian‐Cai; Han, Qing; Chen, Lijuan; Zhao, Junwei; Streb, Carsten; Song, Yu‐Fei

doi:10.1002/anie.201803649

Cited by 236 publications

(146 citation statements)

References 39 publications

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“…POMs sind ideale Modelle für die Aggregation in größere Nanostrukturen, da bereits eine Anzahl von POM‐Verknüpfungskonzepten etabliert wurden: Derzeit wird das Feld durch die Metall‐Kation‐Verknüpfung von POMs dominiert, meist werden dazu Übergangsmetall‐ oder Lanthanidverknüpfungen eingesetzt . Meist werden dazu Wolframate vom Keggin‐ und Dawson‐Typ oder deren Derivate verwendet, um so gigantische “Cluster‐of‐Cluster”‐Strukturen oder sogar POM‐basierte offene Gerüste zu erzeugen …”

Section: Methodsunclassified

Organobor‐Funktionalisierung ermöglicht die hierarchische Aggregation gigantischer Polyoxometallat‐Nanokapseln

Zhou

et al. 2020

Angewandte Chemie

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Die Aggregation molekularer Metalloxide in grçßere Superstrukturen kann die Lücke zwischen molekularen Verbindungen und Festkçrperstrukturen überbrücken. Hier berichten wir über die Funktionalisierung von Polyoxowolframaten mit Organobor-Substituenten, was zur Bildung gigantischer Polyoxometallat-Nanokapseln mit Dimensionen von bis zu vier Nanometern führt. Ein Schlüssel-Schloss-Mechanismus erlaubt das regiospezifische Verankern aromatischer Boronsäuren an Metall-funktionalisierten Dawson-Anionen [M 3 P 2 W 15 O 62 ] 9À (M = Ta V oder Nb V ). Dies führt zu neuartigen Nanokapseln bestehend aus bis zu 12 POM-Enheiten. Experimentelle und theoretische Studien geben erste Einblicke in die Funktion der Organobor-Einheiten sowie der metallfunktionalisierten POMs für die Aggregation der Kapseln. Die Studie legt den Grundstein für die Entwicklung organo-POM-basierter funktioneller Nanostrukturen.

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Section: Methodsunclassified

Organobor‐Funktionalisierung ermöglicht die hierarchische Aggregation gigantischer Polyoxometallat‐Nanokapseln

Zhou

et al. 2020

Angewandte Chemie

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“…Considerable achievements have been made for the synthesis of proton conductive materials from traditional ceramic oxides, solid acids, polymers, and biomaterials to recently reported porous materials, such as metal–organic frameworks and covalent orangic frameworks. [ 13–16 ] However, only a few of them have been developed into the channel materials for protonic FETs. [ 17–19 ] It is one of the priorities to explore new type of proton‐conductive materials and preparation technologies for bioelectronics application of artificial protonic FETs.…”

Section: Figurementioning

confidence: 99%

Flexible Porous Organic Polymer Membranes for Protonic Field‐Effect Transistors

Zhong

et al. 2020

Advanced Materials

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Artificial transistors represent an ideal means for meeting the requirements in interfacing with biological systems. It is pivotal to develop new proton‐conductive materials for the transduction between biochemical events and electronic signals. Herein, the first demonstration of a porous organic polymer membrane (POPM) as a proton‐conductive material for protonic field‐effect transistors is presented. The POPM is readily prepared through a thiourea‐formation condensation reaction. Under hydrated conditions and at room temperature, the POPM delivers a proton mobility of 5.7 × 10−3 cm2 V−1 s−1; the charge carrier densities are successfully modulated from 4.3 × 1017 to 14.1 × 1017 cm−3 by the gate voltage. This study provides a type of promising modular proton‐conductive materials for bioelectronics application.

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“…One approach to overcome these issues is the design of nanostructured composites in which the reactive transition‐metal oxides or carbides are electrically “wired” to conductive carbon substrates; this leads to high‐performance electrocatalysts, for example, for ORR and/or OER . Although top‐down syntheses of transition‐metal oxide/carbide–carbon composites have been explored in detail, the bottom‐up fabrication of such composites starting from molecular metal oxide precursors has only recently become a focus in the design of energy materials …”

Section: Introductionmentioning

confidence: 99%

Transition‐Metal Oxides/Carbides@Carbon Nanotube Composites as Multifunctional Electrocatalysts for Challenging Oxidations and Reductions

Xing

Liu

Cao

et al. 2019

Chemistry A European J

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Ther apid development of renewable-energy technologies such as water splitting, rechargeable metal-air batteries, and fuel cells requires highly efficient electrocatalysts capable of the oxygen-reduction reaction( ORR) and the oxygen-evolution reaction( OER). Herein, we report af acile sonication-driven synthesis to deposit the molecular manganese vanadium oxide precursor [Mn 4 V 4 O 17 (OAc) 3 ] 3À on multiwalled carbon nanotubes (MWCNTs). Thermal conversion of this composite at 900 8Cg ives nanostructured manganese vanadium oxides/carbides, which are stably linked to the MWCNTs. The resulting composites show excellent electrochemical reactivity for ORR and OER, and significant reactivi-ty enhancements compared with the precursors and aP t/C reference are reported.N otably,e ven under harsh acidic conditions, long-term OER activity at low overpotential is reported. In addition, we report exceptional activity of the composites for the industrially important Cl 2 evolution from an aqueous HCl electrolyte. The new composite material showsh ow molecular deposition routes leading to highly active and stable multifunctional electrocatalysts can be developed.T he facile design could in principle be extended to multiple catalystc lasses by tuning of the molecular metal oxide precursor employed.Supporting information and the ORCID identification number(s) for the author(s) of this article can be found under: https://doi.Scheme1.Schematicillustration of the synthesized composites( MC x / MO x = Mn 7 C 3 /V 8 C 7 /MnO).Figure 1. PowderX-ray diffraction of a) composites prepared at different temperatures and b) 1-900 with specified peaks.

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Aggregation of Giant Cerium–Bismuth Tungstate Clusters into a 3D Porous Framework with High Proton Conductivity

Cited by 236 publications

References 39 publications

Organobor‐Funktionalisierung ermöglicht die hierarchische Aggregation gigantischer Polyoxometallat‐Nanokapseln

Organobor‐Funktionalisierung ermöglicht die hierarchische Aggregation gigantischer Polyoxometallat‐Nanokapseln

Flexible Porous Organic Polymer Membranes for Protonic Field‐Effect Transistors

Transition‐Metal Oxides/Carbides@Carbon Nanotube Composites as Multifunctional Electrocatalysts for Challenging Oxidations and Reductions

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