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- W2165850262 abstract "Abstract The ability to control the charge-potential landscape at solid-liquid interfaces is pivotal to engineer novel devices for applications in sensing, catalysis and energy conversion. The isoelectric point (pI)/point of zero charge (pzc) of graphene plays a key role in a number of physico-chemical phenomena occurring at the graphene-liquid interface. Supported by theory, we present here a methodology to identify the pI/pzc of (functionalized) graphene, which also allows for estimating the nature and extent of ion adsorption. The pI of bare graphene (as-prepared, chemical vapor deposition (CVD)-grown) is found to be less than 3.3, which we can continuously modify up to 7.5 by non-covalent electrochemical attachment of aromatic amino groups, preserving the favorable electronic properties of graphene throughout. Modelling all the observed results with detailed theory, we also show that specific adsorption of ions and the substrate play only an ancillary role in our capability to tune the pI of graphene." @default.
- W2165850262 created "2016-06-24" @default.
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- W2165850262 date "2015-07-02" @default.
- W2165850262 modified "2023-10-13" @default.
- W2165850262 title "Tuning the isoelectric point of graphene by electrochemical functionalization" @default.
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- W2165850262 doi "https://doi.org/10.1038/srep11794" @default.
- W2165850262 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4488746" @default.
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