Long-hypothesized 'next generation wonder material' created for first time
May 2022, phys.org
Just when you thought you had enough graphene, now there's graphyne, next in line.
via University of Colorado at Boulder: Yiming Hu et al, Synthesis of γ-graphyne using dynamic covalent chemistry, Nature Synthesis (2022). DOI: 10.1038/s44160-022-00068-7
Image credit: Graphyne - Yiming Hu - 2022
Electric shock to petroleum coke generates sustainable graphene
Jun 2022, phys.org
Using a chemical process called electrochemical exfoliation, they have converted petroleum coke into graphene.
via Texas A&M University: Sanjit Saha et al, Sustainable production of graphene from petroleum coke using electrochemical exfoliation, npj 2D Materials and Applications (2021). DOI: 10.1038/s41699-021-00255-8
New method helps exfoliate hexagonal boron nitride nanosheets
Jun 2022, phys.org
It sounds like they're growing it like they did to ice back in the day before refrigeration compressors:
"Water-icing triggered exfoliation process" of hexagonal boron nitride nanosheets (h-BNNSs), similar to graphene.Based on molecular dynamics simulations, researchers suggested that -OH groups can cause local structural distortion in the defects or edges of h-BN flakes to form an "entrance" for water molecules coming into the h-BNNS interlayer, which can generate nuclei for ice nucleation that can slowly change in shape and size until they reach a stage that allows rapid expansion as the temperature drops sharply, resulting in efficient exfoliation of h-BNNSs.
via Chinese Academy of Sciences: Lulu An et al, Water-icing-triggered scalable and controllable exfoliation of hexagonal boron nitride nanosheets, Cell Reports Physical Science (2022). DOI: 10.1016/j.xcrp.2022.100941
New member added to carbon material family, a two-dimensional monolayer polymeric fullerene
Jun 2022, phys.org
Graphene by extension...
"The work is the first to synthesize a monolayer polymeric fullerene. It is of great significance, as it adds a new member to the carbon material family," Zheng said.
Well, what's it called? "Monolayer Polymeric C60" isn't cutting it.
via Chinese Academy of Sciences: Jian Zheng, Synthesis of a monolayer fullerene network, Nature (2022). DOI: 10.1038/s41586-022-04771-5.
Post Script:
Graphene synapses advance brain-like computers
Aug 2022, phys.org
Synaptic transistors for biocompatible, brain-like computers using graphene and nafion, a polymer membrane material.
via University of Texas at Austin: Dmitry Kireev et al, Metaplastic and energy-efficient biocompatible graphene artificial synaptic transistors for enhanced accuracy neuromorphic computing, Nature Communications (2022). DOI: 10.1038/s41467-022-32078-6
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