Effects of ultrasonic irradiation on crystallization and structural properties of EMT-type zeolite nanocrystals

Eng Poh Ng; Hussein Awala; Jia Pei Ghoy; Aurélie Vicente; Tau Chuan Ling; Yun Hau Ng; Svetlana Mintova; Farook Adam

doi:10.1016/j.matchemphys.2015.03.047

Effects of ultrasonic irradiation on crystallization and structural properties of EMT-type zeolite nanocrystals

Eng Poh Ng^*, Hussein Awala, Jia Pei Ghoy, Aurélie Vicente, Tau Chuan Ling, Yun Hau Ng, Svetlana Mintova, Farook Adam

^*Corresponding author for this work

Chemical Engineering

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

46 Scopus citations

Abstract

Synthesis of EMT zeolite nanocrystals from rice husk ash biomass (RHA) under continuous ultrasonic irradiation is reported. The aging, nucleation and crystallization stages of EMT zeolite in the system were monitored at ambient temperature, and compared with the conventional hydrothermal method. It was found that ultrasonic wave induced rapid crystal growth of the nanosized EMT zeolite. Complete crystallization of EMT nanocrystals was achieved within 24 h which was much faster than conventional hydrothermal synthesis (36 h). Furthermore, XRD and TEM analyses revealed that more nuclei were formed during the nucleation stage, allowing the preparation of smaller zeolite nanocrystals with high crystallinity. The results also showed that sonocrystallization produced EMT zeolite with high yield (ca. 80%). The ultrasound-prepared EMT nanocrystals were also found to have high porosity and high hydrophilicity, making the material promising for water sorption applications including vapor sensing, heat pump and adsorption technologies.

Original language	English (US)
Pages (from-to)	38-45
Number of pages	8
Journal	Materials Chemistry and Physics
Volume	159
DOIs	https://doi.org/10.1016/j.matchemphys.2015.03.047
State	Published - Jun 1 2015

Keywords

Crystal growth
Crystallization
Microporous materials
Ultrasonic techniques

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

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10.1016/j.matchemphys.2015.03.047

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title = "Effects of ultrasonic irradiation on crystallization and structural properties of EMT-type zeolite nanocrystals",

abstract = "Synthesis of EMT zeolite nanocrystals from rice husk ash biomass (RHA) under continuous ultrasonic irradiation is reported. The aging, nucleation and crystallization stages of EMT zeolite in the system were monitored at ambient temperature, and compared with the conventional hydrothermal method. It was found that ultrasonic wave induced rapid crystal growth of the nanosized EMT zeolite. Complete crystallization of EMT nanocrystals was achieved within 24 h which was much faster than conventional hydrothermal synthesis (36 h). Furthermore, XRD and TEM analyses revealed that more nuclei were formed during the nucleation stage, allowing the preparation of smaller zeolite nanocrystals with high crystallinity. The results also showed that sonocrystallization produced EMT zeolite with high yield (ca. 80%). The ultrasound-prepared EMT nanocrystals were also found to have high porosity and high hydrophilicity, making the material promising for water sorption applications including vapor sensing, heat pump and adsorption technologies.",

keywords = "Crystal growth, Crystallization, Microporous materials, Ultrasonic techniques",

author = "Ng, {Eng Poh} and Hussein Awala and Ghoy, {Jia Pei} and Aur{\'e}lie Vicente and Ling, {Tau Chuan} and Ng, {Yun Hau} and Svetlana Mintova and Farook Adam",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

month = jun,

day = "1",

doi = "10.1016/j.matchemphys.2015.03.047",

language = "English (US)",

volume = "159",

pages = "38--45",

journal = "Materials Chemistry and Physics",

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T1 - Effects of ultrasonic irradiation on crystallization and structural properties of EMT-type zeolite nanocrystals

AU - Ng, Eng Poh

AU - Awala, Hussein

AU - Ghoy, Jia Pei

AU - Vicente, Aurélie

AU - Ling, Tau Chuan

AU - Ng, Yun Hau

AU - Mintova, Svetlana

AU - Adam, Farook

PY - 2015/6/1

Y1 - 2015/6/1

N2 - Synthesis of EMT zeolite nanocrystals from rice husk ash biomass (RHA) under continuous ultrasonic irradiation is reported. The aging, nucleation and crystallization stages of EMT zeolite in the system were monitored at ambient temperature, and compared with the conventional hydrothermal method. It was found that ultrasonic wave induced rapid crystal growth of the nanosized EMT zeolite. Complete crystallization of EMT nanocrystals was achieved within 24 h which was much faster than conventional hydrothermal synthesis (36 h). Furthermore, XRD and TEM analyses revealed that more nuclei were formed during the nucleation stage, allowing the preparation of smaller zeolite nanocrystals with high crystallinity. The results also showed that sonocrystallization produced EMT zeolite with high yield (ca. 80%). The ultrasound-prepared EMT nanocrystals were also found to have high porosity and high hydrophilicity, making the material promising for water sorption applications including vapor sensing, heat pump and adsorption technologies.

AB - Synthesis of EMT zeolite nanocrystals from rice husk ash biomass (RHA) under continuous ultrasonic irradiation is reported. The aging, nucleation and crystallization stages of EMT zeolite in the system were monitored at ambient temperature, and compared with the conventional hydrothermal method. It was found that ultrasonic wave induced rapid crystal growth of the nanosized EMT zeolite. Complete crystallization of EMT nanocrystals was achieved within 24 h which was much faster than conventional hydrothermal synthesis (36 h). Furthermore, XRD and TEM analyses revealed that more nuclei were formed during the nucleation stage, allowing the preparation of smaller zeolite nanocrystals with high crystallinity. The results also showed that sonocrystallization produced EMT zeolite with high yield (ca. 80%). The ultrasound-prepared EMT nanocrystals were also found to have high porosity and high hydrophilicity, making the material promising for water sorption applications including vapor sensing, heat pump and adsorption technologies.

KW - Crystal growth

KW - Crystallization

KW - Microporous materials

KW - Ultrasonic techniques

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U2 - 10.1016/j.matchemphys.2015.03.047

DO - 10.1016/j.matchemphys.2015.03.047

M3 - Article

AN - SCOPUS:84929281245

SN - 0254-0584

VL - 159

SP - 38

EP - 45

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

ER -

Effects of ultrasonic irradiation on crystallization and structural properties of EMT-type zeolite nanocrystals

Abstract

Keywords

ASJC Scopus subject areas

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