New‐Generation Graphene from Electrochemical Approaches: Production and Applications

Yang, Sheng; Lohe, Martin R.; Müllen, Kläus; Feng, Xinliang

doi:10.1002/adma.201505326

Cited by 277 publications

(181 citation statements)

References 72 publications

(88 reference statements)

Supporting

Mentioning

176

Contrasting

Unclassified

Order By: Relevance

“…Graphene plays an important role in electrochemical conversion of toluene methyl C−H groups coupled with hydrogen production owing to its high conductivity and barrier to strong acid . We found coupling of high toluene methyl C−H conversion (99.9 %, Figure a) and relatively large hydrogen production (120.7 times that of the CC anode, Figure b).…”

Section: Resultsmentioning

confidence: 99%

Nanopolyaniline Coupled with an Anticorrosive Graphene as a 3D Film Electrocatalyst for Efficient Oxidation of Toluene Methyl C−H Bonds and Hydrogen Production at Low Voltage

Zhu

Wang

Jin

et al. 2019

Chemistry A European J

View full text Add to dashboard Cite

A graphene‐wrapped polyaniline nanoparticles film embedded in carbon cloth (CC/PANI/G) was fabricated and used as a 3D anodic electrocatalyst for oxidation of toluene methyl C−H groups. The methyl C−H bonds can be oxidized effectively at the CC/PANI/G anode with 99.9 % toluene conversion at a low applied voltage of only 1.0 V, which implies low energy input. Importantly, 86.6 % of toluene methyl C−H groups were converted to benzoyl groups (C=O), and hydrogen was produced efficiently at the cathode. The electrocatalytic efficiency at the CC/PANI/G anode was higher at lower voltage (1.0 V) than at higher voltage (1.5 V), and more hydrogen was produced at the corresponding cathode. The synergistic effect between the dynamic redox chemistry of nanoPANI and the excellent conductivity and anticorrosive action of graphene determined the high electrocatalytic efficiency of the oxidation of toluene methyl C−H groups at the CC/PANI/G anode. Owing to the chemical bonding between graphene and PANI, the anticorrosive CC/PANI/G anodic electrocatalyst was durable and effective for oxidation of toluene methyl C−H groups in acidic environment. This approach provides advanced electrode materials for transforming stable chemical bonds (C−H) into useful functional groups (C=O), which will be beneficial for the synthesis of organic intermediates with coupled hydrogen production.

show abstract

Section: Resultsmentioning

confidence: 99%

Nanopolyaniline Coupled with an Anticorrosive Graphene as a 3D Film Electrocatalyst for Efficient Oxidation of Toluene Methyl C−H Bonds and Hydrogen Production at Low Voltage

Zhu

Wang

Jin

et al. 2019

Chemistry A European J

View full text Add to dashboard Cite

show abstract

“…[57,[112][113][114][115] Der in Abbildung 1d argestellte Fall eines synthetischen 2D-Polymers basierend auf einer [2+ +2]-Cycloadditionsreaktion [116] ermçglicht bereits hçhere Ausbeuten brauchbarer Monolagen. Wiedas Beispiel der Herstellung von Graphen aus Graphit zeigt, sind die Ausbeuten von Flüssigexfolierungen meist sehr gering und nur eine sehr kleine Massenfraktion ausgedehnter Monolagen kann mit solchen Methoden isoliert werden.…”

Section: Einführungunclassified

Makroskopische kristalline 2D‐Polymere

Feng

Schlüter²

2018

Angewandte Chemie

Self Cite

View full text Add to dashboard Cite

Monolagen mit interner Periodizität können als 2D‐Polymere oder “molekulare Fischernetze” beschrieben werden. Solche Strukturen sind in der Vergangenheit durch photochemische Reaktionen in Einkristallen hergestellt worden, die aus Monomeren mit spezifisch entworfenen Strukturen bestehen. Einzelne Schichten wurden später durch Exfolierung isoliert. Diese milden Bedingungen ermöglichen zwar exzellente Kontrolle über die gebildete Struktur, allerdings ist die Ausdehnung der erhaltenen 2D‐Polymere durch die Kristallausdehnung limitiert. Dieser Aufsatz befasst sich mit Ansätzen zur Herstellung von 2D‐Polymeren mit makroskopischen lateralen Abmessungen. Solche Abmessungen sind zugänglich, wenn Polymerisationsreaktionen an Grenzflächen zwischen zwei Flüssigkeiten bzw. zwischen einer Flüssigkeit und einem Gas (besonders der Wasser/Luft‐Grenzfläche) durchgeführt werden. Damit lassen sich zwar prinzipiell 2D‐Polymere makroskopischer Größe erzeugen, allerdings eröffnen sich neue analytische Probleme. Einige dieser Herausforderungen werden besprochen und die vielversprechendsten Lösungsansätze hervorgehoben. Anhand dreier repräsentativer Strukturen demonstriert dieser Aufsatz den gegenwärtigen Stand der Technik im noch jungen Feld der 2D‐Polymeranalytik. Zuletzt werden mögliche Anwendungen für neue organische 2D‐Materialien beschrieben, z. B. als Nanomembranen, organische (opto)elektronische Komponenten oder Katalysatoren für die Wasserspaltung.

show abstract

“…[118] This method uses inexpensive equipment involving a graphite electrode as an anode or cathode, a counter electrode, an electrolyte, and an external power source. [118] This method uses inexpensive equipment involving a graphite electrode as an anode or cathode, a counter electrode, an electrolyte, and an external power source.…”

Section: Electrochemical Exfoliation Of Graphitementioning

confidence: 99%

Green Processing of Carbon Nanomaterials

Kawamoto

2016

Advanced Materials

View full text Add to dashboard Cite

Carbon nanomaterials (CNMs) from fullerenes, carbon nanotubes, and graphene are promising carbon allotropes for various applications such as energy-conversion devices and biosensors. Because pristine CNMs show substantial van der Waals interactions and a hydrophobic nature, precipitation is observed immediately in most organic solvents and water. This inevitable aggregation leads to poor processability and diminishes the intrinsic properties of the CNMs. Highly toxic and hazardous chemicals are used for chemical and physical modification of CNMs, even though efficient dispersed solutions are obtained. The development of an environmentally friendly dispersion method for both safe and practical processing is a great challenge. Recent green processing approaches for the manipulation of CNMs using chemical and physical modification are highlighted. A summary of the current research progress on: i) energy-efficient and less-toxic chemical modification of CNMs using covalent-bonding functionality and ii) non-covalent-bonding methodologies through physical modification using green solvents and dispersants, and chemical-free mechanical stimuli is provided. Based on these experimental studies, recent advances and challenges for the potential application of green-processable energy-conversion and biological devices are provided. Finally, a conclusion section is provided summarizing the insights from the present studies as well as some future perspectives.

show abstract

New‐Generation Graphene from Electrochemical Approaches: Production and Applications

Cited by 277 publications

References 72 publications

Nanopolyaniline Coupled with an Anticorrosive Graphene as a 3D Film Electrocatalyst for Efficient Oxidation of Toluene Methyl C−H Bonds and Hydrogen Production at Low Voltage

Nanopolyaniline Coupled with an Anticorrosive Graphene as a 3D Film Electrocatalyst for Efficient Oxidation of Toluene Methyl C−H Bonds and Hydrogen Production at Low Voltage

Makroskopische kristalline 2D‐Polymere

Green Processing of Carbon Nanomaterials

Contact Info

Product

Resources

About