Loading…
Heterostructure formation from hydrothermal annealing of preformed nanocrystals
One of the primary challenges in obtaining heterostructures is control of the morphology and surface features of the components that are suitable for a specific application. In this sense, the use of preformed nanoparticles as building blocks is interesting. However, to create heterojunctions betwee...
Saved in:
Published in: | Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2015-01, Vol.3 (5), p.2216-2225 |
---|---|
Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
cited_by | cdi_FETCH-LOGICAL-c345t-bf69dfd0a66d7499c2b3eee945d07174c8f1b826ff23793d4344b26d46a995113 |
---|---|
cites | cdi_FETCH-LOGICAL-c345t-bf69dfd0a66d7499c2b3eee945d07174c8f1b826ff23793d4344b26d46a995113 |
container_end_page | 2225 |
container_issue | 5 |
container_start_page | 2216 |
container_title | Journal of materials chemistry. A, Materials for energy and sustainability |
container_volume | 3 |
creator | de Mendonça, Vagner R Dalmaschio, Cleocir J Leite, Edson R Niederberger, Markus Ribeiro, Caue |
description | One of the primary challenges in obtaining heterostructures is control of the morphology and surface features of the components that are suitable for a specific application. In this sense, the use of preformed nanoparticles as building blocks is interesting. However, to create heterojunctions between preformed nanoparticles, a further calcination step is usually needed that can result in changes in nanoparticle morphology and surface chemistry. Therefore, the main goal of this study was to explore collision-induced heteroaggregation and oriented attachment under hydrothermal conditions to obtain heterostructures from preformed nanoparticles without further thermal treatment or addition of capping agents. We use anatase TiO
2
and rutile SnO
2
nanoparticles as a model system. A kinetic model based on a diffusion-controlled reaction is adapted to describe the process. For tracking charge migration across the interface and, consequently, heterojunction formation, we employ an indirect method based on the detection of hydroxyl radicals formed over a semiconductor during UV radiation. The rate of hydroxyl radical formation is directly proportional to the photogenerated charge lifetime, which, in turn, depends on the number of heterojunctions formed. The insights presented here suggest the possibility of obtaining the benefits of heterostructures by using nanoparticles with controlled morphology and surface characteristics.
The collision-induced heteroaggregation is a versatile way to obtain the benefits of heterostructures by using nanoparticles with controlled morphology and surface characteristics. |
doi_str_mv | 10.1039/c4ta05926c |
format | article |
fullrecord | <record><control><sourceid>proquest_rsc_p</sourceid><recordid>TN_cdi_rsc_primary_c4ta05926c</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>1660398815</sourcerecordid><originalsourceid>FETCH-LOGICAL-c345t-bf69dfd0a66d7499c2b3eee945d07174c8f1b826ff23793d4344b26d46a995113</originalsourceid><addsrcrecordid>eNqNkU1LxDAQhoMouKx78S7UmwjVpEnT5LgUdYWFvaznkObDrbRNTdLD_nuzrqw3cS7vMPMwzLwDwDWCDwhi_qhIlLDkBVVnYFbAEuYV4fT8lDN2CRYhfMAUDELK-QxsViYa70L0k4qTN5l1vpexdUNmveuz3V57F3cmFbtMDoORXTu8Z85mozcH1uhskINTfh-i7MIVuLBJzOJH5-Dt-Wlbr_L15uW1Xq5zhUkZ88ZSrq2GklKdluSqaLAxhpNSwwpVRDGLGlZQawtccawJJqQpqCZUcl4ihOfg7jh39O5zMiGKvg3KdJ0cjJuCQJRyRggn5D9oco8xVCb0_oiqZElIB4rRt730e4GgOHgsarJdfntcJ_jmCPugTtzvD1L_9q--GLXFX30zhLk</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>1660398815</pqid></control><display><type>article</type><title>Heterostructure formation from hydrothermal annealing of preformed nanocrystals</title><source>Royal Society of Chemistry</source><creator>de Mendonça, Vagner R ; Dalmaschio, Cleocir J ; Leite, Edson R ; Niederberger, Markus ; Ribeiro, Caue</creator><creatorcontrib>de Mendonça, Vagner R ; Dalmaschio, Cleocir J ; Leite, Edson R ; Niederberger, Markus ; Ribeiro, Caue</creatorcontrib><description>One of the primary challenges in obtaining heterostructures is control of the morphology and surface features of the components that are suitable for a specific application. In this sense, the use of preformed nanoparticles as building blocks is interesting. However, to create heterojunctions between preformed nanoparticles, a further calcination step is usually needed that can result in changes in nanoparticle morphology and surface chemistry. Therefore, the main goal of this study was to explore collision-induced heteroaggregation and oriented attachment under hydrothermal conditions to obtain heterostructures from preformed nanoparticles without further thermal treatment or addition of capping agents. We use anatase TiO
2
and rutile SnO
2
nanoparticles as a model system. A kinetic model based on a diffusion-controlled reaction is adapted to describe the process. For tracking charge migration across the interface and, consequently, heterojunction formation, we employ an indirect method based on the detection of hydroxyl radicals formed over a semiconductor during UV radiation. The rate of hydroxyl radical formation is directly proportional to the photogenerated charge lifetime, which, in turn, depends on the number of heterojunctions formed. The insights presented here suggest the possibility of obtaining the benefits of heterostructures by using nanoparticles with controlled morphology and surface characteristics.
The collision-induced heteroaggregation is a versatile way to obtain the benefits of heterostructures by using nanoparticles with controlled morphology and surface characteristics.</description><identifier>ISSN: 2050-7488</identifier><identifier>EISSN: 2050-7496</identifier><identifier>DOI: 10.1039/c4ta05926c</identifier><language>eng</language><subject>Formations ; Heterojunctions ; Heterostructures ; Hydroxyl radicals ; Mathematical models ; Morphology ; Nanoparticles ; Semiconductors</subject><ispartof>Journal of materials chemistry. A, Materials for energy and sustainability, 2015-01, Vol.3 (5), p.2216-2225</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c345t-bf69dfd0a66d7499c2b3eee945d07174c8f1b826ff23793d4344b26d46a995113</citedby><cites>FETCH-LOGICAL-c345t-bf69dfd0a66d7499c2b3eee945d07174c8f1b826ff23793d4344b26d46a995113</cites><orcidid>0000-0002-8908-6343</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>de Mendonça, Vagner R</creatorcontrib><creatorcontrib>Dalmaschio, Cleocir J</creatorcontrib><creatorcontrib>Leite, Edson R</creatorcontrib><creatorcontrib>Niederberger, Markus</creatorcontrib><creatorcontrib>Ribeiro, Caue</creatorcontrib><title>Heterostructure formation from hydrothermal annealing of preformed nanocrystals</title><title>Journal of materials chemistry. A, Materials for energy and sustainability</title><description>One of the primary challenges in obtaining heterostructures is control of the morphology and surface features of the components that are suitable for a specific application. In this sense, the use of preformed nanoparticles as building blocks is interesting. However, to create heterojunctions between preformed nanoparticles, a further calcination step is usually needed that can result in changes in nanoparticle morphology and surface chemistry. Therefore, the main goal of this study was to explore collision-induced heteroaggregation and oriented attachment under hydrothermal conditions to obtain heterostructures from preformed nanoparticles without further thermal treatment or addition of capping agents. We use anatase TiO
2
and rutile SnO
2
nanoparticles as a model system. A kinetic model based on a diffusion-controlled reaction is adapted to describe the process. For tracking charge migration across the interface and, consequently, heterojunction formation, we employ an indirect method based on the detection of hydroxyl radicals formed over a semiconductor during UV radiation. The rate of hydroxyl radical formation is directly proportional to the photogenerated charge lifetime, which, in turn, depends on the number of heterojunctions formed. The insights presented here suggest the possibility of obtaining the benefits of heterostructures by using nanoparticles with controlled morphology and surface characteristics.
The collision-induced heteroaggregation is a versatile way to obtain the benefits of heterostructures by using nanoparticles with controlled morphology and surface characteristics.</description><subject>Formations</subject><subject>Heterojunctions</subject><subject>Heterostructures</subject><subject>Hydroxyl radicals</subject><subject>Mathematical models</subject><subject>Morphology</subject><subject>Nanoparticles</subject><subject>Semiconductors</subject><issn>2050-7488</issn><issn>2050-7496</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqNkU1LxDAQhoMouKx78S7UmwjVpEnT5LgUdYWFvaznkObDrbRNTdLD_nuzrqw3cS7vMPMwzLwDwDWCDwhi_qhIlLDkBVVnYFbAEuYV4fT8lDN2CRYhfMAUDELK-QxsViYa70L0k4qTN5l1vpexdUNmveuz3V57F3cmFbtMDoORXTu8Z85mozcH1uhskINTfh-i7MIVuLBJzOJH5-Dt-Wlbr_L15uW1Xq5zhUkZ88ZSrq2GklKdluSqaLAxhpNSwwpVRDGLGlZQawtccawJJqQpqCZUcl4ihOfg7jh39O5zMiGKvg3KdJ0cjJuCQJRyRggn5D9oco8xVCb0_oiqZElIB4rRt730e4GgOHgsarJdfntcJ_jmCPugTtzvD1L_9q--GLXFX30zhLk</recordid><startdate>20150101</startdate><enddate>20150101</enddate><creator>de Mendonça, Vagner R</creator><creator>Dalmaschio, Cleocir J</creator><creator>Leite, Edson R</creator><creator>Niederberger, Markus</creator><creator>Ribeiro, Caue</creator><scope>AAYXX</scope><scope>CITATION</scope><scope>7ST</scope><scope>7U6</scope><scope>C1K</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-8908-6343</orcidid></search><sort><creationdate>20150101</creationdate><title>Heterostructure formation from hydrothermal annealing of preformed nanocrystals</title><author>de Mendonça, Vagner R ; Dalmaschio, Cleocir J ; Leite, Edson R ; Niederberger, Markus ; Ribeiro, Caue</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c345t-bf69dfd0a66d7499c2b3eee945d07174c8f1b826ff23793d4344b26d46a995113</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Formations</topic><topic>Heterojunctions</topic><topic>Heterostructures</topic><topic>Hydroxyl radicals</topic><topic>Mathematical models</topic><topic>Morphology</topic><topic>Nanoparticles</topic><topic>Semiconductors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>de Mendonça, Vagner R</creatorcontrib><creatorcontrib>Dalmaschio, Cleocir J</creatorcontrib><creatorcontrib>Leite, Edson R</creatorcontrib><creatorcontrib>Niederberger, Markus</creatorcontrib><creatorcontrib>Ribeiro, Caue</creatorcontrib><collection>CrossRef</collection><collection>Environment Abstracts</collection><collection>Sustainability Science Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of materials chemistry. A, Materials for energy and sustainability</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>de Mendonça, Vagner R</au><au>Dalmaschio, Cleocir J</au><au>Leite, Edson R</au><au>Niederberger, Markus</au><au>Ribeiro, Caue</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Heterostructure formation from hydrothermal annealing of preformed nanocrystals</atitle><jtitle>Journal of materials chemistry. A, Materials for energy and sustainability</jtitle><date>2015-01-01</date><risdate>2015</risdate><volume>3</volume><issue>5</issue><spage>2216</spage><epage>2225</epage><pages>2216-2225</pages><issn>2050-7488</issn><eissn>2050-7496</eissn><abstract>One of the primary challenges in obtaining heterostructures is control of the morphology and surface features of the components that are suitable for a specific application. In this sense, the use of preformed nanoparticles as building blocks is interesting. However, to create heterojunctions between preformed nanoparticles, a further calcination step is usually needed that can result in changes in nanoparticle morphology and surface chemistry. Therefore, the main goal of this study was to explore collision-induced heteroaggregation and oriented attachment under hydrothermal conditions to obtain heterostructures from preformed nanoparticles without further thermal treatment or addition of capping agents. We use anatase TiO
2
and rutile SnO
2
nanoparticles as a model system. A kinetic model based on a diffusion-controlled reaction is adapted to describe the process. For tracking charge migration across the interface and, consequently, heterojunction formation, we employ an indirect method based on the detection of hydroxyl radicals formed over a semiconductor during UV radiation. The rate of hydroxyl radical formation is directly proportional to the photogenerated charge lifetime, which, in turn, depends on the number of heterojunctions formed. The insights presented here suggest the possibility of obtaining the benefits of heterostructures by using nanoparticles with controlled morphology and surface characteristics.
The collision-induced heteroaggregation is a versatile way to obtain the benefits of heterostructures by using nanoparticles with controlled morphology and surface characteristics.</abstract><doi>10.1039/c4ta05926c</doi><tpages>1</tpages><orcidid>https://orcid.org/0000-0002-8908-6343</orcidid></addata></record> |
fulltext | fulltext |
identifier | ISSN: 2050-7488 |
ispartof | Journal of materials chemistry. A, Materials for energy and sustainability, 2015-01, Vol.3 (5), p.2216-2225 |
issn | 2050-7488 2050-7496 |
language | eng |
recordid | cdi_rsc_primary_c4ta05926c |
source | Royal Society of Chemistry |
subjects | Formations Heterojunctions Heterostructures Hydroxyl radicals Mathematical models Morphology Nanoparticles Semiconductors |
title | Heterostructure formation from hydrothermal annealing of preformed nanocrystals |
url | http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-24T13%3A51%3A58IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_rsc_p&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Heterostructure%20formation%20from%20hydrothermal%20annealing%20of%20preformed%20nanocrystals&rft.jtitle=Journal%20of%20materials%20chemistry.%20A,%20Materials%20for%20energy%20and%20sustainability&rft.au=de%20Mendon%C3%A7a,%20Vagner%20R&rft.date=2015-01-01&rft.volume=3&rft.issue=5&rft.spage=2216&rft.epage=2225&rft.pages=2216-2225&rft.issn=2050-7488&rft.eissn=2050-7496&rft_id=info:doi/10.1039/c4ta05926c&rft_dat=%3Cproquest_rsc_p%3E1660398815%3C/proquest_rsc_p%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-c345t-bf69dfd0a66d7499c2b3eee945d07174c8f1b826ff23793d4344b26d46a995113%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=1660398815&rft_id=info:pmid/&rfr_iscdi=true |