Reaction Kinetics for the Covalent Functionalization of Two-Dimensional MoS2 by Aryl Diazonium Salts

Langmuir ◽  
2019 ◽  
Vol 35 (17) ◽  
pp. 5693-5701 ◽  
Author(s):  
Duo O. Li ◽  
Ximo S. Chu ◽  
Qing Hua Wang
Keyword(s):  
Reaction Kinetics ◽  
Diazonium Salts ◽  
Two Dimensional ◽  
Covalent Functionalization

Versatile Graphene Oxide Nanosheets via Covalent Functionalization and Their Applications

2021 ◽  
Author(s):  
Minju Park ◽  
Namhee Kim ◽  
Jiyoung Lee ◽  
Minsu Gu ◽  
Byeong-Su Kim
Keyword(s):  
Graphene Oxide ◽  
Two Dimensional ◽  
Graphene Oxide Nanosheets ◽  
Covalent Functionalization ◽  
Graphene Derivatives

Even though many graphene derivatives that are atomically thin two-dimensional structures, such as graphene oxide (GO), have triggered enormous interest in the scientific and industrial communities owing to their easy...

scholarly journals Covalent Functionalization of Nickel Phosphide Nanocrystals with Aryl-Diazonium Salts

2021 ◽  
Author(s):  
Ian Murphy ◽  
Peter Rice ◽  
Madison Monahan ◽  
Leo Zasada ◽  
Elisa Miller ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Photoelectron Spectroscopy ◽  
Density Functional ◽  
Binding Energies ◽  
Diazonium Salts ◽  
Surface Functional Group ◽  
Covalent Functionalization ◽  
Substitution Pattern ◽  
Core Electron ◽  
Functional Theory

Covalent functionalization of Ni2P nanocrystals was demonstrated using aryl-diazonium salts. Spontaneous adsorption of aryl functional groups was observed, with surface coverages ranging from 20-96% depending on the native reactivity of the salt as determined by the aryl substitution pattern. Increased coverage was possible for low reactivity species using a sacrificial reductant. Functionalization was confirmed using thermogravimetric analysis, FTIR and X-ray photoelectron spectroscopy. The structure and energetics of this nanocrystal electrocatalyst system, as a function of ligand coverage, was explored with density functional theory calculations. The Hammett parameter of the surface functional group was found to linearly correlate with the change in Ni and P core-electron binding energies and the nanocrystal’s experimentally and computationally determined work-function. The electrocatalytic activity and stability of the functionalized nanocrystals for hydrogen evolution were also improved when compared to the unfunctionalized material, but a simple trend based on electrostatics was not evident. We used density functional theory to understand this discrepancy and found that H adsorption energies on the covalently functionalized Ni2P also do not follow the electrostatic trend and are predictive descriptors of the experimental results.

Gram Scale and Room Temperature Functionalization of Boron Nitride Nanosheets for Water Treatment

NANO ◽  
2019 ◽  
Vol 14 (08) ◽  
pp. 1950107
Author(s):  
Shirin Daneshnia ◽  
Mohsen Adeli ◽  
Yaghoub Mansourpanah
Keyword(s):  
Water Treatment ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Two Dimensional ◽  
Covalent Functionalization ◽  
Bet Analysis ◽  
Potential Applications ◽  
Short Time ◽  
Further Development ◽  
Straightforward Approach

Two-dimensional hexagonal boron nitride is a fascinating nanomaterial with a broad range of potential applications. However, further development of this nanomaterial is hampered because of its poor functionality and low processability. One of the efficient strategies for improving the processability of two-dimensional hexagonal boron nitride is the covalent functionalization of this nanomaterial. In this study, we report on a straightforward approach for functionalization of two-dimensional hexagonal boron nitride by lithium cyclopentadienyl and its application for water treatment. Cyclopentadienyl-functionalized boron nitride was characterized by different spectroscopy and microscopy methods as well as thermal and BET analysis. The synthesized nanomaterial was able to efficiently remove methylene blue from water in a short time. Adsorption capacity of this nanomaterial was as high as 476.3[Formula: see text]mg/g, which was superior to the nonfunctionalized boron nitride. Our results showed that cyclopentadienyl-functionalized boron nitride is a promising candidate for the removal of cationic pollutants from water.

Two-dimensional matrices confining metal single atoms with enhanced electrochemical reaction kinetics for energy storage applications

2020 ◽  
Author(s):  
Peng Wang ◽  
Danyang Zhao ◽  
Long-Wei Yin
Keyword(s):  
Energy Storage ◽  
Reaction Kinetics ◽  
Electrode Material ◽  
Storage Systems ◽  
Electrochemical Reaction ◽  
Electrochemical Energy Storage ◽  
Single Atom ◽  
Two Dimensional ◽  
Single Atoms ◽  
Energy Storage Applications

Diversified electrochemical energy storage systems highly depend on electrode material construction. In response, single atom catalysts intentionally incorporated within two-dimensional (2D) matrices (SAs@2D) can offer desirable advantages derived from the...

scholarly journals Interface amorphization of two‐dimensional black phosphorus upon the treatment with diazonium salts

2020 ◽  
Author(s):  
Aleksandra Mitrović ◽  
Stefan Wild ◽  
Vicent Lloret ◽  
Michael Fickert ◽  
Mhamed Assebban ◽  
...  
Keyword(s):  
Black Phosphorus ◽  
Diazonium Salts ◽  
Two Dimensional

scholarly journals A versatile strategy towards non-covalent functionalization of graphene by surface-confined supramolecular self-assembly of Janus tectons

2015 ◽  
Vol 6 ◽  
pp. 632-639 ◽  
Author(s):  
Ping Du ◽  
David Bléger ◽  
Fabrice Charra ◽  
Vincent Bouchiat ◽  
David Kreher ◽  
...  
Keyword(s):  
Self Assembly ◽  
Three Dimensional ◽  
Building Blocks ◽  
The Other ◽  
Two Dimensional ◽  
Covalent Functionalization ◽  
Flat Surfaces ◽  
Carbon Based

Two-dimensional (2D), supramolecular self-assembly at surfaces is now well-mastered with several existing examples. However, one remaining challenge to enable future applications in nanoscience is to provide potential functionalities to the physisorbed adlayer. This work reviews a recently developed strategy that addresses this key issue by taking advantage of a new concept, Janus tecton materials. This is a versatile, molecular platform based on the design of three-dimensional (3D) building blocks consisting of two faces linked by a cyclophane-type pillar. One face is designed to steer 2D self-assembly onto C(sp2)-carbon-based flat surfaces, the other allowing for the desired functionality above the substrate with a well-controlled lateral order. In this way, it is possible to simultaneously obtain a regular, non-covalent paving as well as supramolecular functionalization of graphene, thus opening interesting perspectives for nanoscience applications.

scholarly journals Covalent Functionalization of Nickel Phosphide Nanocrystals with Aryl-Diazonium Salts

2021 ◽  
Author(s):  
Ian A. Murphy ◽  
Peter S. Rice ◽  
Madison Monahan ◽  
Leo P. Zasada ◽  
Elisa M. Miller ◽  
...  
Keyword(s):  
Diazonium Salts ◽  
Nickel Phosphide ◽  
Covalent Functionalization

scholarly journals Iodide mediated reductive decomposition of diazonium salts: towards mild and efficient covalent functionalization of surface-supported graphene

Nanoscale ◽  
2020 ◽  
Vol 12 (22) ◽  
pp. 11916-11926 ◽  
Author(s):  
Yuanzhi Xia ◽  
Cristina Martin ◽  
Johannes Seibel ◽  
Samuel Eyley ◽  
Wim Thielemans ◽  
...  
Keyword(s):  
Diazonium Salts ◽  
Covalent Functionalization ◽  
Reductive Decomposition

We present an efficient and straightforward covalent functionalization protocol for modification of surface supported graphene and graphite using aqueous reagents.

scholarly journals Functionalization of graphene: does the organic chemistry matter?

2018 ◽  
Vol 14 ◽  
pp. 2018-2026 ◽  
Author(s):  
Artur Kasprzak ◽  
Agnieszka Zuchowska ◽  
Magdalena Poplawska
Keyword(s):  
Organic Chemistry ◽  
Reaction Mechanisms ◽  
Recent Literature ◽  
Critical Assessment ◽  
Diazonium Salts ◽  
Direct Link ◽  
Covalent Functionalization ◽  
Basic Principles ◽  
Synthetic Approaches ◽  
Graphene Family Materials

Reactions applying amidation- or esterification-type processes and diazonium salts chemistry constitute the most commonly applied synthetic approaches for the modification of graphene-family materials. This work presents a critical assessment of the amidation and esterification methodologies reported in the recent literature, as well as a discussion of the reactions that apply diazonium salts. Common misunderstandings from the reported covalent functionalization methods are discussed, and a direct link between the reaction mechanisms and the basic principles of organic chemistry is taken into special consideration.

Core@Shell and Lateral Heterostructures Composing of SnS and NbS2

Nanoscale ◽  
2021 ◽  
Author(s):  
Zhiwei Wang ◽  
Xiang Wang ◽  
Qian Chen ◽  
Xiaoshan Wang ◽  
Xiao Huang ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Spatial Arrangement ◽  
Layered Materials ◽  
Optoelectronic Properties ◽  
Core Shell ◽  
Two Dimensional

The spatial arrangement of heterostructures based on two-dimensional layered materials is important in controlling their electronic and optoelectronic properties. In this contribution, by controlling the reaction kinetics and thus the...

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