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Article: Interfacially Super‐Assembled Asymmetric and H2O2 Sensitive Multilayer‐Sandwich Magnetic Mesoporous Silica Nanomotors for Detecting and Removing Heavy Metal Ions

TitleInterfacially Super‐Assembled Asymmetric and H2O2 Sensitive Multilayer‐Sandwich Magnetic Mesoporous Silica Nanomotors for Detecting and Removing Heavy Metal Ions
Authors
Keywordsasymmetric
heavy metal ions
magnetic
mesoporous
nanomotors
Issue Date2021
PublisherWiley-VCH Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/home/afm
Citation
Advanced Functional Materials, 2021, v. 31 n. 21, p. article no. 2010694 How to Cite?
AbstractAsymmetric hollow and magnetic mesoporous silica nanocomposites have great potential applications due to their unique structural–functional properties. Here, asymmetric multilayer-sandwich magnetic mesoporous silica nanobottles (MMSNBs) are presented through an interfacial super-assembly strategy. Asymmetric hollow silica nanobottles (SNBs) are first prepared, and Fe3O4 nanoparticles monolayers and mesoporous silica layers are uniformly super-assembled on the surfaces of SNBs, respectively. The high Fe3O4 nanoparticles loading endows MMSNBs with a high magnetization (8.5 emu g−1), while the mesoporous silica layers exhibit high surface area (613.4 m2 g−1) and large pore size (3.6 nm). MMSNBs can be employed as a novel type of enzyme-powered nanomotors by integrating catalase (Cat-MMSNBs), which show an average speed of 7.59 µm s−1 (≈25 body lengths s−1) at 1.5 wt% H2O2. Accordingly, the water quality can be monitored by evaluating the movement speed of Cat-MMSNBs. Moreover, MMSNBs act as a good adsorbent for removing more than 90% of the heavy metal ions with the advantage of the mesoporous structure. In addition, the good magnetic response enables the MMSNBs with precise directional control and is conducive to recycling for repeated operation. This bottom-up interfacial super-assembly construction strategy allows for a new understanding of the rational design and synthesis of multi-functional nanomotors.
Persistent Identifierhttp://hdl.handle.net/10722/305269
ISSN
2023 Impact Factor: 18.5
2023 SCImago Journal Rankings: 5.496
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorQiu, B-
dc.contributor.authorXie, L-
dc.contributor.authorZeng, J-
dc.contributor.authorLiu, T-
dc.contributor.authorYan, M-
dc.contributor.authorZhou, S-
dc.contributor.authorLiang, Q-
dc.contributor.authorTang, J-
dc.contributor.authorLiang, K-
dc.contributor.authorKong, B-
dc.date.accessioned2021-10-20T10:07:02Z-
dc.date.available2021-10-20T10:07:02Z-
dc.date.issued2021-
dc.identifier.citationAdvanced Functional Materials, 2021, v. 31 n. 21, p. article no. 2010694-
dc.identifier.issn1616-301X-
dc.identifier.urihttp://hdl.handle.net/10722/305269-
dc.description.abstractAsymmetric hollow and magnetic mesoporous silica nanocomposites have great potential applications due to their unique structural–functional properties. Here, asymmetric multilayer-sandwich magnetic mesoporous silica nanobottles (MMSNBs) are presented through an interfacial super-assembly strategy. Asymmetric hollow silica nanobottles (SNBs) are first prepared, and Fe3O4 nanoparticles monolayers and mesoporous silica layers are uniformly super-assembled on the surfaces of SNBs, respectively. The high Fe3O4 nanoparticles loading endows MMSNBs with a high magnetization (8.5 emu g−1), while the mesoporous silica layers exhibit high surface area (613.4 m2 g−1) and large pore size (3.6 nm). MMSNBs can be employed as a novel type of enzyme-powered nanomotors by integrating catalase (Cat-MMSNBs), which show an average speed of 7.59 µm s−1 (≈25 body lengths s−1) at 1.5 wt% H2O2. Accordingly, the water quality can be monitored by evaluating the movement speed of Cat-MMSNBs. Moreover, MMSNBs act as a good adsorbent for removing more than 90% of the heavy metal ions with the advantage of the mesoporous structure. In addition, the good magnetic response enables the MMSNBs with precise directional control and is conducive to recycling for repeated operation. This bottom-up interfacial super-assembly construction strategy allows for a new understanding of the rational design and synthesis of multi-functional nanomotors.-
dc.languageeng-
dc.publisherWiley-VCH Verlag GmbH & Co KGaA. The Journal's web site is located at http://www.wiley-vch.de/home/afm-
dc.relation.ispartofAdvanced Functional Materials-
dc.rightsSubmitted (preprint) Version This is the pre-peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. Accepted (peer-reviewed) Version This is the peer reviewed version of the following article: [FULL CITE], which has been published in final form at [Link to final article using the DOI]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.-
dc.subjectasymmetric-
dc.subjectheavy metal ions-
dc.subjectmagnetic-
dc.subjectmesoporous-
dc.subjectnanomotors-
dc.titleInterfacially Super‐Assembled Asymmetric and H2O2 Sensitive Multilayer‐Sandwich Magnetic Mesoporous Silica Nanomotors for Detecting and Removing Heavy Metal Ions-
dc.typeArticle-
dc.identifier.emailTang, J: jinyao@hku.hk-
dc.identifier.authorityTang, J=rp01677-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1002/adfm.202010694-
dc.identifier.scopuseid_2-s2.0-85102622979-
dc.identifier.hkuros326673-
dc.identifier.volume31-
dc.identifier.issue21-
dc.identifier.spagearticle no. 2010694-
dc.identifier.epagearticle no. 2010694-
dc.identifier.isiWOS:000630067500001-
dc.publisher.placeGermany-

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