Electron beam induced rapid crystallization of water splitting nanostructures

Nitul S. Rajput; Sang Gook Kim; Jeffrey B. Chou; Jehad Abed; Jaime Viegas; Mustapha Jouiad

doi:10.1557/adv.2015.20

Electron beam induced rapid crystallization of water splitting nanostructures

Nitul S. Rajput, Sang Gook Kim, Jeffrey B. Chou, Jehad Abed, Jaime Viegas, Mustapha Jouiad

Electrical Engineering

Massachusetts Institute of Technology

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

13 Scopus citations

Abstract

Titanium dioxide (TiO₂) loaded with gold (Au) as noble metal, acts as an efficient photocatalyst that has been extensively investigated for water splitting processes. In this paper, we report on the microstructure of atomic layer deposited titanium dioxide and the crystallinity modification of the material using energetic electron beam irradiation. A rapid high-energy electron beam induced crystallization of the nanostructures has been observed in-situ inside a High-Resolution Transmission Electron Microscope (HRTEM). The systematic crystallization of the nanomaterial occurring under the electron beam irradiation (300 KV) indicates the transformation of the near amorphous material into a mixture of two nuances of TiO₂ polymorphs, namely rutile and anatase. We believe that this transformation will enhance the efficiency of water splitting process, as the mixed phases of rutile and anatase are known to possess better optical properties than the individual polymorphs of TiO₂. This finding may be of particular interest in developing appropriate heat treatment methods for these nanostructures dedicated to water splitting to increase their efficiency.

Original language	British English
Pages (from-to)	825-830
Number of pages	6
Journal	MRS Advances
Volume	1
Issue number	13
DOIs	https://doi.org/10.1557/adv.2015.20
State	Published - 2016

Keywords

atomic layer deposition
nanostructure
optical properties

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10.1557/adv.2015.20

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title = "Electron beam induced rapid crystallization of water splitting nanostructures",

abstract = "Titanium dioxide (TiO2) loaded with gold (Au) as noble metal, acts as an efficient photocatalyst that has been extensively investigated for water splitting processes. In this paper, we report on the microstructure of atomic layer deposited titanium dioxide and the crystallinity modification of the material using energetic electron beam irradiation. A rapid high-energy electron beam induced crystallization of the nanostructures has been observed in-situ inside a High-Resolution Transmission Electron Microscope (HRTEM). The systematic crystallization of the nanomaterial occurring under the electron beam irradiation (300 KV) indicates the transformation of the near amorphous material into a mixture of two nuances of TiO2 polymorphs, namely rutile and anatase. We believe that this transformation will enhance the efficiency of water splitting process, as the mixed phases of rutile and anatase are known to possess better optical properties than the individual polymorphs of TiO2. This finding may be of particular interest in developing appropriate heat treatment methods for these nanostructures dedicated to water splitting to increase their efficiency.",

keywords = "atomic layer deposition, nanostructure, optical properties",

author = "Rajput, {Nitul S.} and Kim, {Sang Gook} and Chou, {Jeffrey B.} and Jehad Abed and Jaime Viegas and Mustapha Jouiad",

note = "Funding Information: This work was supported in part under the Cooperative Agreement between Masdar Institute of Science and Technology, Abu Dhabi, UAE and Massachusetts Institute of Technology, Cambridge, MA, USA, Reference Number 02/MI/MIT/CP/11/07633/GEN/G/00. Publisher Copyright: {\textcopyright} Copyright Materials Research Society 2015.",

year = "2016",

doi = "10.1557/adv.2015.20",

language = "British English",

volume = "1",

pages = "825--830",

journal = "MRS Advances",

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TY - JOUR

T1 - Electron beam induced rapid crystallization of water splitting nanostructures

AU - Rajput, Nitul S.

AU - Kim, Sang Gook

AU - Chou, Jeffrey B.

AU - Abed, Jehad

AU - Viegas, Jaime

AU - Jouiad, Mustapha

N1 - Funding Information: This work was supported in part under the Cooperative Agreement between Masdar Institute of Science and Technology, Abu Dhabi, UAE and Massachusetts Institute of Technology, Cambridge, MA, USA, Reference Number 02/MI/MIT/CP/11/07633/GEN/G/00. Publisher Copyright: © Copyright Materials Research Society 2015.

PY - 2016

Y1 - 2016

N2 - Titanium dioxide (TiO2) loaded with gold (Au) as noble metal, acts as an efficient photocatalyst that has been extensively investigated for water splitting processes. In this paper, we report on the microstructure of atomic layer deposited titanium dioxide and the crystallinity modification of the material using energetic electron beam irradiation. A rapid high-energy electron beam induced crystallization of the nanostructures has been observed in-situ inside a High-Resolution Transmission Electron Microscope (HRTEM). The systematic crystallization of the nanomaterial occurring under the electron beam irradiation (300 KV) indicates the transformation of the near amorphous material into a mixture of two nuances of TiO2 polymorphs, namely rutile and anatase. We believe that this transformation will enhance the efficiency of water splitting process, as the mixed phases of rutile and anatase are known to possess better optical properties than the individual polymorphs of TiO2. This finding may be of particular interest in developing appropriate heat treatment methods for these nanostructures dedicated to water splitting to increase their efficiency.

AB - Titanium dioxide (TiO2) loaded with gold (Au) as noble metal, acts as an efficient photocatalyst that has been extensively investigated for water splitting processes. In this paper, we report on the microstructure of atomic layer deposited titanium dioxide and the crystallinity modification of the material using energetic electron beam irradiation. A rapid high-energy electron beam induced crystallization of the nanostructures has been observed in-situ inside a High-Resolution Transmission Electron Microscope (HRTEM). The systematic crystallization of the nanomaterial occurring under the electron beam irradiation (300 KV) indicates the transformation of the near amorphous material into a mixture of two nuances of TiO2 polymorphs, namely rutile and anatase. We believe that this transformation will enhance the efficiency of water splitting process, as the mixed phases of rutile and anatase are known to possess better optical properties than the individual polymorphs of TiO2. This finding may be of particular interest in developing appropriate heat treatment methods for these nanostructures dedicated to water splitting to increase their efficiency.

KW - atomic layer deposition

KW - nanostructure

KW - optical properties

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DO - 10.1557/adv.2015.20

M3 - Article

AN - SCOPUS:85016986584

SN - 2059-8521

VL - 1

SP - 825

EP - 830

JO - MRS Advances

JF - MRS Advances

IS - 13

ER -

Electron beam induced rapid crystallization of water splitting nanostructures

Abstract

Keywords

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