Partially oxidised boron nitride as a 2D nanomaterial for nanofiltration applications

Natalia García Doménech; Áine Coogan; Finn Purcell-Milton; María Luisa Casasín García; Adrián Sanz Arjona; Marc Brunet Cabré; Aran Rafferty; Kim McKelvey; Peter Dunne; Yurii K. Gun'ko

doi:10.1039/d2na00472k

Partially oxidised boron nitride as a 2D nanomaterial for nanofiltration applications

Natalia García Doménech, Áine Coogan, Finn Purcell-Milton, María Luisa Casasín García, Adrián Sanz Arjona, Marc Brunet Cabré, Aran Rafferty, Kim McKelvey, Peter Dunne, Yurii K. Gun'ko

Technological University Dublin

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

Abstract

Boron nitride (BN) based 2D nanomaterials are an emerging class of materials for the development of new membranes for nanofiltration applications. Here, we report the preparation, characterisation and testing of highly promising nanofiltration membranes produced from partially oxidised BN (BNOx) 2D nanosheets. In our work, the partial oxidation of BN was successfully achieved by heating the bulk h-BN powder in air at 1000 °C, resulting in BNOx product. The characterisation of the sample showed the presence of B-OH groups corresponding to the partial oxidisation of the BN. The BNOx material was then exfoliated in water and used to produce membranes, using vacuum filtration. These membranes were characterised using electron microscopy, BET and mercury porosimetry techniques. The membranes have also been tested in water purification and removal of several typical water-soluble dyes, demonstrating outstanding retention values close to 100%. We believe that this research opens up new opportunities for further production, as well as chemical functionalisation and modification of membranes for nanofiltration and separation technologies.

Original language	English
Pages (from-to)	4895-4904
Number of pages	10
Journal	Nanoscale Advances
Volume	4
Issue number	22
DOIs	https://doi.org/10.1039/d2na00472k
Publication status	Published - 25 Oct 2022

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title = "Partially oxidised boron nitride as a 2D nanomaterial for nanofiltration applications",

abstract = "Boron nitride (BN) based 2D nanomaterials are an emerging class of materials for the development of new membranes for nanofiltration applications. Here, we report the preparation, characterisation and testing of highly promising nanofiltration membranes produced from partially oxidised BN (BNOx) 2D nanosheets. In our work, the partial oxidation of BN was successfully achieved by heating the bulk h-BN powder in air at 1000 °C, resulting in BNOx product. The characterisation of the sample showed the presence of B-OH groups corresponding to the partial oxidisation of the BN. The BNOx material was then exfoliated in water and used to produce membranes, using vacuum filtration. These membranes were characterised using electron microscopy, BET and mercury porosimetry techniques. The membranes have also been tested in water purification and removal of several typical water-soluble dyes, demonstrating outstanding retention values close to 100%. We believe that this research opens up new opportunities for further production, as well as chemical functionalisation and modification of membranes for nanofiltration and separation technologies.",

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doi = "10.1039/d2na00472k",

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AU - Doménech, Natalia García

AU - Coogan, Áine

AU - Purcell-Milton, Finn

AU - Casasín García, María Luisa

AU - Arjona, Adrián Sanz

AU - Cabré, Marc Brunet

AU - Rafferty, Aran

AU - McKelvey, Kim

AU - Dunne, Peter

AU - Gun'ko, Yurii K.

PY - 2022/10/25

Y1 - 2022/10/25

N2 - Boron nitride (BN) based 2D nanomaterials are an emerging class of materials for the development of new membranes for nanofiltration applications. Here, we report the preparation, characterisation and testing of highly promising nanofiltration membranes produced from partially oxidised BN (BNOx) 2D nanosheets. In our work, the partial oxidation of BN was successfully achieved by heating the bulk h-BN powder in air at 1000 °C, resulting in BNOx product. The characterisation of the sample showed the presence of B-OH groups corresponding to the partial oxidisation of the BN. The BNOx material was then exfoliated in water and used to produce membranes, using vacuum filtration. These membranes were characterised using electron microscopy, BET and mercury porosimetry techniques. The membranes have also been tested in water purification and removal of several typical water-soluble dyes, demonstrating outstanding retention values close to 100%. We believe that this research opens up new opportunities for further production, as well as chemical functionalisation and modification of membranes for nanofiltration and separation technologies.

AB - Boron nitride (BN) based 2D nanomaterials are an emerging class of materials for the development of new membranes for nanofiltration applications. Here, we report the preparation, characterisation and testing of highly promising nanofiltration membranes produced from partially oxidised BN (BNOx) 2D nanosheets. In our work, the partial oxidation of BN was successfully achieved by heating the bulk h-BN powder in air at 1000 °C, resulting in BNOx product. The characterisation of the sample showed the presence of B-OH groups corresponding to the partial oxidisation of the BN. The BNOx material was then exfoliated in water and used to produce membranes, using vacuum filtration. These membranes were characterised using electron microscopy, BET and mercury porosimetry techniques. The membranes have also been tested in water purification and removal of several typical water-soluble dyes, demonstrating outstanding retention values close to 100%. We believe that this research opens up new opportunities for further production, as well as chemical functionalisation and modification of membranes for nanofiltration and separation technologies.

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JF - Nanoscale Advances

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Partially oxidised boron nitride as a 2D nanomaterial for nanofiltration applications

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