Functional Protection of Exfoliated Black Phosphorus by Noncovalent Modification with Anthraquinone

Rui Gusmão; Zdeněk Sofer; Martin Pumera

doi:10.1021/acsnano.8b01474

Functional Protection of Exfoliated Black Phosphorus by Noncovalent Modification with Anthraquinone

Rui Gusmão, Zdeněk Sofer, Martin Pumera

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

69 Citations (Scopus)

Abstract

Few and monolayer black phosphorus (phosphorene) is currently an intensively researched material. Shear exfoliated black phosphorus (BP_SE) nanosheets were functionalized with the redox active antraquinone (AQ) that can provide additional charge storage capacity. The noncovalent interaction of BP with AQ occurs due to van der Waals interactions. X-ray photoelectron spectroscopy results show that AQ coverage of BP_SE nanosheets led to a stabilization against BP_SE degradation. Electrochemistry of the BP_SE-AQ shows that AQ is stably anchored onto BP_SE and exhibits redox peaks stable for more than 100 cycles. The surface coverage by AQ on BP_SE is estimated to be 1.25 nmol AQ/mg BP and electron-transfer rate constant (k_ET) of 33 s^-1. Furthermore, the proposed modification greatly increases the gravimetric capacitance of BP_SE-AQ with respect to the starting BP_bulk. Such coating of BP not only protects BP from degradation but also brings electroactive functionality to this two-dimensionally layered material.

Original language	English
Pages (from-to)	5666-5673
Number of pages	8
Journal	ACS Nano
Volume	12
Issue number	6
DOIs	https://doi.org/10.1021/acsnano.8b01474
Publication status	Published - 2018 Jun 26

Bibliographical note

Funding Information:
Z.S. is supported by Czech Science Foundation (GACR No. 17-11456S). This work was created with the financial support of the Neuron Foundation for science support and the Advanced Functional Nanorobots project (reg. no. CZ.02.1.01/0.0/0.0/15_003/0000444 financed by the EFRR). The authors would like to thank F. Novotný for his assistance with the optical profilometer initial experiments.

Publisher Copyright:
© 2018 American Chemical Society.

All Science Journal Classification (ASJC) codes

Materials Science(all)
Engineering(all)
Physics and Astronomy(all)

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10.1021/acsnano.8b01474

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title = "Functional Protection of Exfoliated Black Phosphorus by Noncovalent Modification with Anthraquinone",

abstract = "Few and monolayer black phosphorus (phosphorene) is currently an intensively researched material. Shear exfoliated black phosphorus (BPSE) nanosheets were functionalized with the redox active antraquinone (AQ) that can provide additional charge storage capacity. The noncovalent interaction of BP with AQ occurs due to van der Waals interactions. X-ray photoelectron spectroscopy results show that AQ coverage of BPSE nanosheets led to a stabilization against BPSE degradation. Electrochemistry of the BPSE-AQ shows that AQ is stably anchored onto BPSE and exhibits redox peaks stable for more than 100 cycles. The surface coverage by AQ on BPSE is estimated to be 1.25 nmol AQ/mg BP and electron-transfer rate constant (kET) of 33 s-1. Furthermore, the proposed modification greatly increases the gravimetric capacitance of BPSE-AQ with respect to the starting BPbulk. Such coating of BP not only protects BP from degradation but also brings electroactive functionality to this two-dimensionally layered material.",

author = "Rui Gusm{\~a}o and Zden{\v e}k Sofer and Martin Pumera",

note = "Funding Information: Z.S. is supported by Czech Science Foundation (GACR No. 17-11456S). This work was created with the financial support of the Neuron Foundation for science support and the Advanced Functional Nanorobots project (reg. no. CZ.02.1.01/0.0/0.0/15_003/0000444 financed by the EFRR). The authors would like to thank F. Novotn{\'y} for his assistance with the optical profilometer initial experiments. Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",

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AU - Pumera, Martin

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PY - 2018/6/26

Y1 - 2018/6/26

N2 - Few and monolayer black phosphorus (phosphorene) is currently an intensively researched material. Shear exfoliated black phosphorus (BPSE) nanosheets were functionalized with the redox active antraquinone (AQ) that can provide additional charge storage capacity. The noncovalent interaction of BP with AQ occurs due to van der Waals interactions. X-ray photoelectron spectroscopy results show that AQ coverage of BPSE nanosheets led to a stabilization against BPSE degradation. Electrochemistry of the BPSE-AQ shows that AQ is stably anchored onto BPSE and exhibits redox peaks stable for more than 100 cycles. The surface coverage by AQ on BPSE is estimated to be 1.25 nmol AQ/mg BP and electron-transfer rate constant (kET) of 33 s-1. Furthermore, the proposed modification greatly increases the gravimetric capacitance of BPSE-AQ with respect to the starting BPbulk. Such coating of BP not only protects BP from degradation but also brings electroactive functionality to this two-dimensionally layered material.

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Functional Protection of Exfoliated Black Phosphorus by Noncovalent Modification with Anthraquinone

Abstract

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