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Применить Всего найдено 10. Отображено 10.
27-02-2018 дата публикации

Mitigating leaks in membranes

Номер: US0009901879B2
Автор: Rohit N. Karnik, Suman Bose, Michael S. H. Boutilier, Nicolas G. Hadjiconstantinou, Tarun Kumar Jain, Sean C. O'Hern, Tahar Laoui, Muataz A. Atieh, Doojoon Jang, KARNIK ROHIT N, BOSE SUMAN, BOUTILIER MICHAEL S H, HADJICONSTANTINOU NICOLAS G, JAIN TARUN KUMAR, OHERN SEAN C, LAOUI TAHAR, ATIEH MUATAZ A, JANG DOOJOON, Karnik Rohit N., Bose Suman, Boutilier Michael S. H., Hadjiconstantinou Nicolas G., Jain Tarun Kumar, O'Hern Sean C., Laoui Tahar, Atieh Muataz A., Jang Doojoon
Принадлежит: Massachusetts Institute of Technology, King Fahd University of Petroleum & Minerals, MASSACHUSETTS INST TECHNOLOGY, UNIV KING FAHD PET & MINERALS

Two-dimensional material based filters, their method of manufacture, and their use are disclosed. In one embodiment, a membrane may include an active layer including a plurality of defects and a deposited material associated with the plurality of defects may reduce flow therethrough. Additionally, a majority of the active layer may be free from the material. In another embodiment, a membrane may include a porous substrate and an atomic layer deposited material disposed on a surface of the porous substrate. The atomic layer deposited material may be less hydrophilic than the porous substrate and an atomically thin active layer may be disposed on the atomic layer deposited material.

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Номер записи: 1
02-01-2020 дата публикации

COATINGS TO IMPROVE THE SELECTIVITY OF ATOMICALLY THIN MEMBRANES

Номер: US20200001245A1
Автор: Jang Doojoon, Karnik Rohit N.
Принадлежит: Massachusetts Institute of Technology

Disclosed embodiments are related to mitigating leaks in membranes and/or improving the selectivity of membranes. 1. A membrane comprising:a substrate;an active layer comprising a first surface, a second surface, and a plurality of channels passing through the active layer, wherein the first surface is directly opposite the second surface and the active layer is disposed on the substrate;a first material at least partially in contact with the first surface; anda second material at least partially in contact with the second surface, wherein the first material and the second material are configured such that there is at least one interaction between the first material and the second material through at least one channel, thus affecting the through-size of the at least one channel.2. The membrane of claim 1 , wherein the active layer comprises graphene claim 1 , hexagonal boron nitride claim 1 , molybdenum disulfide claim 1 , vanadium pentoxide claim 1 , silicon claim 1 , doped-graphene claim 1 , graphene oxide claim 1 , hydrogenated graphene claim 1 , fluorinated graphene claim 1 , a covalent organic framework claim 1 , a metal-organic framework claim 1 , a layered transition metal dichalcogenide claim 1 , a layered Group-IV and Group-III metal chalcogenide claim 1 , silicene claim 1 , germanene claim 1 , and/or a layered binary compound of a Group IV element and a Group III-V element.3. The membrane of claim 1 , wherein the active layer is an atomically thin layer.4. The membrane of claim 1 , wherein the at least one interaction between the first material and the second material is a non-covalent interaction.5. The membrane of claim 4 , wherein the non-covalent interaction is an electrostatic interaction claim 4 , a hydrophobic interaction claim 4 , a solvation interaction claim 4 , and/or a van der Waals interaction.6. The membrane of claim 1 , wherein the at least one interaction between the first material and the second material is a covalent interaction.7. The ...

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Номер записи: 2
07-03-2019 дата публикации

TECHNIQUES FOR PERFORMING DIFFUSION-BASED FILTRATION USING NANOPOROUS MEMBRANES AND RELATED SYSTEMS AND METHODS

Номер: US20190070566A1
Автор: Boutilier Michael S.H., Jang Doojoon, Karmik Rohit N., Kidambi Piran, Zhang Sui
Принадлежит: Massachusetts Institute of Technology

According to some aspects, a semi-permeable membrane is provided for performing separation processes as well as its method of manufacture. In some instances, a membrane may include a porous substrate, and an active layer disposed upon the substrate. The active layer may include at least one atomically thin layer having a plurality of open pores that allow transport of some species through the membrane while restricting transport of other species through the membrane. The open pores may have a mean pore size between 0.5 nm and 10 nm and a number density between 10cmand 1014 cm. 1. A semi-permeable membrane for performing separation processes , the membrane comprising:a porous substrate; and{'sup': 9', '−2', '14', '−2, 'an active layer disposed upon the substrate, wherein the active layer includes at least one atomically thin layer, the active layer having a plurality of open pores that allow transport of some species through the membrane while restricting transport of other species through the membrane, wherein the open pores have a mean pore size between 0.5 nm and 10 nm, and wherein the open pores have a number density between 10cmand 10cm.'}2. The membrane of claim 1 , wherein the active layer comprises at least one of graphene claim 1 , hexagonal boron nitride claim 1 , molybdenum sulfide claim 1 , vanadium pentoxide claim 1 , silicon claim 1 , doped-graphene claim 1 , graphene oxide claim 1 , hydrogenated graphene claim 1 , fluorinated graphene claim 1 , a covalent organic framework claim 1 , a layered transition metal dichalcogenide claim 1 , a layered Group-IV and Group-III metal chalcogenide claim 1 , silicene claim 1 , germanene claim 1 , or a layered binary compound of a Group IV element and a Group III-V element.3. The membrane of claim 1 , wherein the active layer is substantially formed from graphene.4. The membrane of claim 1 , wherein the active layer has a plurality of defects claim 1 , and the membrane further comprises a deposited material ...

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Номер записи: 3
07-05-2015 дата публикации

MITIGATING LEAKS IN MEMBRANES

Номер: US20150122727A1
Автор: "OHern Sean C.", Atieh Muataz A., Bose Suman, Boutilier Michael S.H., Hadjiconstantinou Nicolas G., Jain Tarun Kumar, Jang Doojoon, Karnik Rohit N., Laoui Tahar
Принадлежит:

Two-dimensional material based filters, their method of manufacture, and their use are disclosed. In one embodiment, a membrane may include an active layer including a plurality of defects and a deposited material associated with the plurality of defects may reduce flow therethrough. Additionally, a majority of the active layer may be free from the material. In another embodiment, a membrane may include a porous substrate and an atomic layer deposited material disposed on a surface of the porous substrate. The atomic layer deposited material may be less hydrophilic than the porous substrate and an atomically thin active layer may be disposed on the atomic layer deposited material. 1. A membrane comprising:an active layer including a first plurality of defects; anda deposited material associated with the first plurality of defects, wherein the material reduces flow through the first plurality of defects, and wherein a majority of the active layer is free from the material.2. (canceled)3. The membrane of claim 2 , wherein the active layer is an atomically thin layer.4. (canceled)5. (canceled)6. The membrane of claim 1 , wherein the active layer includes a plurality of open pores.7. The membrane of claim 6 , wherein the plurality of open pores are functionalized.8. The membrane of claim 1 , wherein the material is disposed in the first plurality of defects.9. The membrane of claim 1 , wherein the active layer is disposed on a porous substrate.10. The membrane of claim 9 , wherein the material is disposed in one or more pores of the porous substrate to reduce flow through one or more of the plurality of defects.11. The membrane of claim 1 , wherein the active layer comprises a plurality of active layers.12. The membrane of claim 1 , wherein the active layer includes a second plurality of defects that are smaller than the first plurality of defects claim 1 , and wherein the second plurality of defects are unsealed.13. The membrane of claim 1 , wherein the deposited ...

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Номер записи: 4
05-07-2018 дата публикации

MITIGATING LEAKS IN MEMBRANES

Номер: US20180185791A1
Автор: "OHern Sean C.", Atieh Muataz A., Bose Suman, Boutilier Michael S.H., Hadjiconstantinou Nicolas G., Jain Tarun Kumar, Jang Doojoon, Karnik Rohit N., Laoui Tahar
Принадлежит:

Two-dimensional material based filters, their method of manufacture, and their use are disclosed. In one embodiment, a membrane may include an active layer including a plurality of defects and a deposited material associated with the plurality of defects may reduce flow therethrough. Additionally, a majority of the active layer may be free from the material. In another embodiment, a membrane may include a porous substrate and an atomic layer deposited material disposed on a surface of the porous substrate. The atomic layer deposited material may be less hydrophilic than the porous substrate and an atomically thin active layer may be disposed on the atomic layer deposited material. 1. A method of forming a membrane , the method comprising:depositing a material using atomic layer deposition onto a porous substrate, wherein the material is less hydrophilic than the porous substrate; andbonding an atomically thin active layer to the porous substrate.2. The method of claim 1 , wherein the atomically thin active layer comprises at least one of graphene claim 1 , hexagonal boron nitride claim 1 , molybdenum sulfide claim 1 , vanadium pentoxide claim 1 , silicon claim 1 , doped-graphene claim 1 , graphene oxide claim 1 , hydrogenated graphene claim 1 , fluorinated graphene claim 1 , a covalent organic framework claim 1 , a layered transition metal dichalcogenide claim 1 , a layered Group-IV and Group-III metal chalcogenide claim 1 , silicene claim 1 , germanene claim 1 , and a layered binary compound of a Group IV element and a Group III-V element.3. The method of claim 1 , wherein the atomic layer deposited material comprises at least one of alumina claim 1 , ruthenium oxide claim 1 , zinc oxide claim 1 , titania claim 1 , zirconia claim 1 , and hafnia.4. The method of claim 1 , wherein depositing the material comprises depositing the material onto a surface and in a plurality of pores of the porous substrate.5. The method of claim 4 , wherein the material deposited in the ...

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Номер записи: 5
08-10-2020 дата публикации

MITIGATING LEAKS IN MEMBRANES

Номер: US20200316528A1
Автор: "OHern Sean C.", Atieh Muataz A., Bose Suman, Boutilier Michael S.H., Hadjiconstantinou Nicolas G., Jain Tarun Kumar, Jang Doojoon, Karnik Rohit N., Laoui Tahar
Принадлежит:

Two-dimensional material based filters, their method of manufacture, and their use are disclosed. In one embodiment, a membrane may include an active layer including a plurality of defects and a deposited material associated with the plurality of defects may reduce flow therethrough. Additionally, a majority of the active layer may be free from the material. In another embodiment, a membrane may include a porous substrate and an atomic layer deposited material disposed on a surface of the porous substrate. The atomic layer deposited material may be less hydrophilic than the porous substrate and an atomically thin active layer may be disposed on the atomic layer deposited material. 1. An article comprising:an atomically thin layer including a plurality of defects; anda material deposited on the plurality of defects, wherein a majority of a surface of the atomically thin layer is free from the material, and wherein the material is retained in the article during use.2. The article of claim 1 , wherein the atomically thin layer comprises a plurality of atomically thin layers.3. The article of claim 1 , wherein the deposited material comprises a molecule claim 1 , wherein a size of the molecule is less than a size of the plurality of defects.4. The article of claim 1 , wherein the deposited material is a stoichiometric material.5. The article of claim 1 , wherein the deposited material comprises at least two molecules bound together claim 1 , each of which comprises a first portion that is too large to pass through at least a portion of the plurality of defects and a second portion which is capable of passing through at least the portion of the plurality of defects.6. The article of claim 1 , wherein the deposited material comprises at least one of a polyamide claim 1 , calcium sulfate claim 1 , calcium carbonate claim 1 , zinc carbonate claim 1 , polyaniline claim 1 , polypyrrole claim 1 , and poly(lactic acid).7. The article of claim 1 , wherein the atomically thin ...

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Номер записи: 6
08-08-2023 дата публикации

Mitigating leaks in membranes

Номер: US11717791B2
Автор: Doojoon Jang, Michael S. H. Boutilier, Muataz A. Atieh, Nicolas G. Hadjiconstantinou, Rohit N. Karnik, Sean C. O'Hern, Suman Bose, Tahar Laoui, Tarun Kumar Jain
Принадлежит: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Massachusetts Institute of Technology

Two-dimensional material based filters, their method of manufacture, and their use are disclosed. In one embodiment, a membrane may include an active layer including a plurality of defects and a deposited material associated with the plurality of defects may reduce flow therethrough. Additionally, a majority of the active layer may be free from the material. In another embodiment, a membrane may include a porous substrate and an atomic layer deposited material disposed on a surface of the porous substrate. The atomic layer deposited material may be less hydrophilic than the porous substrate and an atomically thin active layer may be disposed on the atomic layer deposited material.

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Номер записи: 7
07-09-2016 дата публикации

Mitigating leaks in membranes

Номер: EP3062914A1
Автор: Doojoon Jang, Michael S.h. BOUTILIER, Muataz A. Atieh, Nicolas G. Hadjiconstantinou, Rohit N. Karnik, Sean C. O'Hern, Suman Bose, Tahar Laoui, Tarun Kumar Jain
Принадлежит: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Massachusetts Institute of Technology

Two-dimensional material based filters, their method of manufacture, and their use are disclosed. In one embodiment, a membrane may include an active layer including a plurality of defects and a deposited material associated with the plurality of defects may reduce flow therethrough. Additionally, a majority of the active layer may be free from the material. In another embodiment, a membrane may include a porous substrate and an atomic layer deposited material disposed on a surface of the porous substrate. The atomic layer deposited material may be less hydrophilic than the porous substrate and an atomically thin active layer may be disposed on the atomic layer deposited material.

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Номер записи: 8
10-09-2024 дата публикации

Coatings to improve the selectivity of atomically thin membranes

Номер: US12083483B2
Автор: Doojoon Jang, Rohit N. Karnik
Принадлежит: Massachusetts Institute of Technology

Disclosed embodiments are related to mitigating leaks in membranes and/or improving the selectivity of membranes.

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Номер записи: 9
06-02-2020 дата публикации

Coatings to improve the selectivity of atomically thin membranes

Номер: WO2020006484A9
Автор: Doojoon Jang, Rohit N. Karnik
Принадлежит: Massachusetts Institute of Technology

Disclosed embodiments are related to mitigating leaks in membranes and/or improving the selectivity of membranes.

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Номер записи: 10