Double emulsion droplets as microreactors for synthesis of mesoporous hydroxyapatite

Ho Cheung Shum; Amit Bandyopadhyay; Susmita Bose; David A. Weitz

doi:10.1021/cm9028935

Double emulsion droplets as microreactors for synthesis of mesoporous hydroxyapatite

Ho Cheung Shum
, Amit Bandyopadhyay
, Susmita Bose
, David A. Weitz

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

165 Citations (Scopus)

Abstract

We introduce a novel approach for synthesizing mesoporous hydroxyapatite (HAp, (Ca)₁₀, (PO₄)₆(OH)₂) using double emulsion droplets as microreactors. By using capillary microfluidic techniques, the size and the geometry of the droplet microreactors can be tuned easily. Double emulsion droplets offer the combined advantages of both shielding the reactants and on-demand addition of reactants; this makes them highly versatile microreactors. Such droplet microreactors also enable simple visualization of the HAp formation process as well as control over the porosity in the HAp that is synthesized. Powder formed with our technique demonstrates a remarkable microstructure, as well as significantly enhanced BET specific average surface area and nanoscale porosity. Our results present a novel synthesis approach for controlling the nanoscale porosity and the morphology of inorganic particles using double emulsion droplets. © 2009 American Chemical Society.

Original language	English
Pages (from-to)	5548-5555
Journal	Chemistry of Materials
Volume	21
Issue number	22
DOIs	https://doi.org/10.1021/cm9028935
Publication status	Published - 24 Nov 2009
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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title = "Double emulsion droplets as microreactors for synthesis of mesoporous hydroxyapatite",

abstract = "We introduce a novel approach for synthesizing mesoporous hydroxyapatite (HAp, (Ca)10, (PO4)6(OH)2) using double emulsion droplets as microreactors. By using capillary microfluidic techniques, the size and the geometry of the droplet microreactors can be tuned easily. Double emulsion droplets offer the combined advantages of both shielding the reactants and on-demand addition of reactants; this makes them highly versatile microreactors. Such droplet microreactors also enable simple visualization of the HAp formation process as well as control over the porosity in the HAp that is synthesized. Powder formed with our technique demonstrates a remarkable microstructure, as well as significantly enhanced BET specific average surface area and nanoscale porosity. Our results present a novel synthesis approach for controlling the nanoscale porosity and the morphology of inorganic particles using double emulsion droplets. {\textcopyright} 2009 American Chemical Society.",

author = "Shum, \{Ho Cheung\} and Amit Bandyopadhyay and Susmita Bose and Weitz, \{David A.\}",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

year = "2009",

month = nov,

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doi = "10.1021/cm9028935",

language = "English",

volume = "21",

pages = "5548--5555",

journal = "Chemistry of Materials",

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TY - JOUR

T1 - Double emulsion droplets as microreactors for synthesis of mesoporous hydroxyapatite

AU - Shum, Ho Cheung

AU - Bandyopadhyay, Amit

AU - Bose, Susmita

AU - Weitz, David A.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2009/11/24

Y1 - 2009/11/24

N2 - We introduce a novel approach for synthesizing mesoporous hydroxyapatite (HAp, (Ca)10, (PO4)6(OH)2) using double emulsion droplets as microreactors. By using capillary microfluidic techniques, the size and the geometry of the droplet microreactors can be tuned easily. Double emulsion droplets offer the combined advantages of both shielding the reactants and on-demand addition of reactants; this makes them highly versatile microreactors. Such droplet microreactors also enable simple visualization of the HAp formation process as well as control over the porosity in the HAp that is synthesized. Powder formed with our technique demonstrates a remarkable microstructure, as well as significantly enhanced BET specific average surface area and nanoscale porosity. Our results present a novel synthesis approach for controlling the nanoscale porosity and the morphology of inorganic particles using double emulsion droplets. © 2009 American Chemical Society.

AB - We introduce a novel approach for synthesizing mesoporous hydroxyapatite (HAp, (Ca)10, (PO4)6(OH)2) using double emulsion droplets as microreactors. By using capillary microfluidic techniques, the size and the geometry of the droplet microreactors can be tuned easily. Double emulsion droplets offer the combined advantages of both shielding the reactants and on-demand addition of reactants; this makes them highly versatile microreactors. Such droplet microreactors also enable simple visualization of the HAp formation process as well as control over the porosity in the HAp that is synthesized. Powder formed with our technique demonstrates a remarkable microstructure, as well as significantly enhanced BET specific average surface area and nanoscale porosity. Our results present a novel synthesis approach for controlling the nanoscale porosity and the morphology of inorganic particles using double emulsion droplets. © 2009 American Chemical Society.

UR - https://www.scopus.com/pages/publications/72149102452

UR - https://www.scopus.com/pages/publications/72149102452#tab=impact

U2 - 10.1021/cm9028935

DO - 10.1021/cm9028935

M3 - RGC 21 - Publication in refereed journal

SN - 0897-4756

VL - 21

SP - 5548

EP - 5555

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 22

ER -

Double emulsion droplets as microreactors for synthesis of mesoporous hydroxyapatite

Abstract

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