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Continuous flow hydrothermal synthesis of phase pure rutile TiO2 nanoparticles with a rod-like morphology

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Continuous flow hydrothermal synthesis of phase pure rutile TiO2 nanoparticles with a rod-like morphology. / Beyer, Jonas; Mamakhel, Aref; Søndergaard-Pedersen, Frederik; Yu, Jinlong; Iversen, Bo Brummerstedt.

I: Nanoscale, Bind 12, Nr. 4, 01.2020, s. 2695-2702.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

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@article{00f3e1aaaf3d42cc8525779fae6519af,
title = "Continuous flow hydrothermal synthesis of phase pure rutile TiO2 nanoparticles with a rod-like morphology",
abstract = "Titania nanocrystals are used in numerous applications but specific polymorphs (anatase, rutile, brookite) are typically required in specific applications making synthesis control over the crystal phase essential. Supercritical continuous flow reactors constitute fast, scalable alternatives to conventional autoclave hydrothermal synthesis. They provide outstanding control over nanoparticle characteristics such as size, crystallinity, and morphology but previous studies have always resulted in anatase products. Here we report, for the first time, a continuous hydrothermal flow method for obtaining phase pure rutile nanoparticles thereby significantly broadening the crystal design space for large scale titania applications. Through variation of the reactor temperature, the dimensions of the rod-like rutile crystallites are tunable in a range of 35 to 60 nm in length and 10 to 35 nm in width (maximum aspect ratio of ∼3.5) leading to a tunable band gap (3.2-3.5 eV) and high specific surface areas exceeding 200 m2 g-1.",
author = "Jonas Beyer and Aref Mamakhel and Frederik S{\o}ndergaard-Pedersen and Jinlong Yu and Iversen, {Bo Brummerstedt}",
year = "2020",
month = jan,
doi = "10.1039/c9nr09069j",
language = "English",
volume = "12",
pages = "2695--2702",
journal = "Nanoscale",
issn = "2040-3364",
publisher = "ROYAL SOC CHEMISTRY",
number = "4",

}

RIS

TY - JOUR

T1 - Continuous flow hydrothermal synthesis of phase pure rutile TiO2 nanoparticles with a rod-like morphology

AU - Beyer, Jonas

AU - Mamakhel, Aref

AU - Søndergaard-Pedersen, Frederik

AU - Yu, Jinlong

AU - Iversen, Bo Brummerstedt

PY - 2020/1

Y1 - 2020/1

N2 - Titania nanocrystals are used in numerous applications but specific polymorphs (anatase, rutile, brookite) are typically required in specific applications making synthesis control over the crystal phase essential. Supercritical continuous flow reactors constitute fast, scalable alternatives to conventional autoclave hydrothermal synthesis. They provide outstanding control over nanoparticle characteristics such as size, crystallinity, and morphology but previous studies have always resulted in anatase products. Here we report, for the first time, a continuous hydrothermal flow method for obtaining phase pure rutile nanoparticles thereby significantly broadening the crystal design space for large scale titania applications. Through variation of the reactor temperature, the dimensions of the rod-like rutile crystallites are tunable in a range of 35 to 60 nm in length and 10 to 35 nm in width (maximum aspect ratio of ∼3.5) leading to a tunable band gap (3.2-3.5 eV) and high specific surface areas exceeding 200 m2 g-1.

AB - Titania nanocrystals are used in numerous applications but specific polymorphs (anatase, rutile, brookite) are typically required in specific applications making synthesis control over the crystal phase essential. Supercritical continuous flow reactors constitute fast, scalable alternatives to conventional autoclave hydrothermal synthesis. They provide outstanding control over nanoparticle characteristics such as size, crystallinity, and morphology but previous studies have always resulted in anatase products. Here we report, for the first time, a continuous hydrothermal flow method for obtaining phase pure rutile nanoparticles thereby significantly broadening the crystal design space for large scale titania applications. Through variation of the reactor temperature, the dimensions of the rod-like rutile crystallites are tunable in a range of 35 to 60 nm in length and 10 to 35 nm in width (maximum aspect ratio of ∼3.5) leading to a tunable band gap (3.2-3.5 eV) and high specific surface areas exceeding 200 m2 g-1.

UR - http://www.scopus.com/inward/record.url?scp=85078692981&partnerID=8YFLogxK

U2 - 10.1039/c9nr09069j

DO - 10.1039/c9nr09069j

M3 - Journal article

C2 - 31942897

AN - SCOPUS:85078692981

VL - 12

SP - 2695

EP - 2702

JO - Nanoscale

JF - Nanoscale

SN - 2040-3364

IS - 4

ER -