Rational design of multifunctional Fe@γ-Fe2O3@H-TiO2 nanocomposites with enhanced magnetic and photoconversion effects for wide applications : from photocatalysis to imaging-guided photothermal cancer therapy
Titanium dioxide (TiO2 ) has been widely investigated and used in many areas due to its high refractive index and ultraviolet light absorption, but the lack of absorption in the visible-near infrared (Vis-NIR) region limits its application. Herein, multifunctional Fe@γ-Fe2 O3 @H-TiO2 nanocomposites...
| Main Authors: | , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Online Access: | https://hdl.handle.net/10356/143685 |
| _version_ | 1826122605642383360 |
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| author | Wang, Meifang Deng, Kerong Lü, Wei Deng, Xiaoran Li, Kai Shi, Yanshu Ding, Binbin Cheng, Ziyong Xing, Bengang Han, Gang Hou, Zhiyao Lin, Jun |
| author2 | School of Physical and Mathematical Sciences |
| author_facet | School of Physical and Mathematical Sciences Wang, Meifang Deng, Kerong Lü, Wei Deng, Xiaoran Li, Kai Shi, Yanshu Ding, Binbin Cheng, Ziyong Xing, Bengang Han, Gang Hou, Zhiyao Lin, Jun |
| author_sort | Wang, Meifang |
| collection | NTU |
| description | Titanium dioxide (TiO2 ) has been widely investigated and used in many areas due to its high refractive index and ultraviolet light absorption, but the lack of absorption in the visible-near infrared (Vis-NIR) region limits its application. Herein, multifunctional Fe@γ-Fe2 O3 @H-TiO2 nanocomposites (NCs) with multilayer-structure are synthesized by one-step hydrogen reduction, which show remarkably improved magnetic and photoconversion effects as a promising generalists for photocatalysis, bioimaging, and photothermal therapy (PTT). Hydrogenation is used to turn white TiO2 in to hydrogenated TiO2 (H-TiO2 ), thus improving the absorption in the Vis-NIR region. Based on the excellent solar-driven photocatalytic activities of the H-TiO2 shell, the Fe@γ-Fe2 O3 magnetic core is introduced to make it convenient for separating and recovering the catalytic agents. More importantly, Fe@γ-Fe2 O3 @H-TiO2 NCs show enhanced photothermal conversion efficiency due to more circuit loops for electron transitions between H-TiO2 and γ-Fe2 O3 , and the electronic structures of Fe@γ-Fe2 O3 @H-TiO2 NCs are calculated using the Vienna ab initio simulation package based on the density functional theory to account for the results. The reported core-shell NCs can serve as an NIR-responsive photothermal agent for magnetic-targeted photothermal therapy and as a multimodal imaging probe for cancer including infrared photothermal imaging, magnetic resonance imaging, and photoacoustic imaging. |
| first_indexed | 2024-10-01T05:51:13Z |
| format | Journal Article |
| id | ntu-10356/143685 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:51:13Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1436852020-09-16T09:02:56Z Rational design of multifunctional Fe@γ-Fe2O3@H-TiO2 nanocomposites with enhanced magnetic and photoconversion effects for wide applications : from photocatalysis to imaging-guided photothermal cancer therapy Wang, Meifang Deng, Kerong Lü, Wei Deng, Xiaoran Li, Kai Shi, Yanshu Ding, Binbin Cheng, Ziyong Xing, Bengang Han, Gang Hou, Zhiyao Lin, Jun School of Physical and Mathematical Sciences Science::Biological sciences::Biochemistry Fe@γ‐Fe2O3@H‐TiO2 Hydrogenated TiO2 Titanium dioxide (TiO2 ) has been widely investigated and used in many areas due to its high refractive index and ultraviolet light absorption, but the lack of absorption in the visible-near infrared (Vis-NIR) region limits its application. Herein, multifunctional Fe@γ-Fe2 O3 @H-TiO2 nanocomposites (NCs) with multilayer-structure are synthesized by one-step hydrogen reduction, which show remarkably improved magnetic and photoconversion effects as a promising generalists for photocatalysis, bioimaging, and photothermal therapy (PTT). Hydrogenation is used to turn white TiO2 in to hydrogenated TiO2 (H-TiO2 ), thus improving the absorption in the Vis-NIR region. Based on the excellent solar-driven photocatalytic activities of the H-TiO2 shell, the Fe@γ-Fe2 O3 magnetic core is introduced to make it convenient for separating and recovering the catalytic agents. More importantly, Fe@γ-Fe2 O3 @H-TiO2 NCs show enhanced photothermal conversion efficiency due to more circuit loops for electron transitions between H-TiO2 and γ-Fe2 O3 , and the electronic structures of Fe@γ-Fe2 O3 @H-TiO2 NCs are calculated using the Vienna ab initio simulation package based on the density functional theory to account for the results. The reported core-shell NCs can serve as an NIR-responsive photothermal agent for magnetic-targeted photothermal therapy and as a multimodal imaging probe for cancer including infrared photothermal imaging, magnetic resonance imaging, and photoacoustic imaging. 2020-09-16T09:02:56Z 2020-09-16T09:02:56Z 2018 Journal Article Wang, M., Deng, K., Lü, W., Deng, X., Li, K., Shi, Y., ... Lin, J. (2018). Rational design of multifunctional Fe@γ-Fe2O3@H-TiO2 nanocomposites with enhanced magnetic and photoconversion effects for wide applications : from photocatalysis to imaging-guided photothermal cancer therapy. Advanced Materials, 30(13), 1706747-. doi:10.1002/adma.201706747 1521-4095 https://hdl.handle.net/10356/143685 10.1002/adma.201706747 29441613 13 30 1706747 en Advanced Materials © 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. All rights reserved. |
| spellingShingle | Science::Biological sciences::Biochemistry Fe@γ‐Fe2O3@H‐TiO2 Hydrogenated TiO2 Wang, Meifang Deng, Kerong Lü, Wei Deng, Xiaoran Li, Kai Shi, Yanshu Ding, Binbin Cheng, Ziyong Xing, Bengang Han, Gang Hou, Zhiyao Lin, Jun Rational design of multifunctional Fe@γ-Fe2O3@H-TiO2 nanocomposites with enhanced magnetic and photoconversion effects for wide applications : from photocatalysis to imaging-guided photothermal cancer therapy |
| title | Rational design of multifunctional Fe@γ-Fe2O3@H-TiO2 nanocomposites with enhanced magnetic and photoconversion effects for wide applications : from photocatalysis to imaging-guided photothermal cancer therapy |
| title_full | Rational design of multifunctional Fe@γ-Fe2O3@H-TiO2 nanocomposites with enhanced magnetic and photoconversion effects for wide applications : from photocatalysis to imaging-guided photothermal cancer therapy |
| title_fullStr | Rational design of multifunctional Fe@γ-Fe2O3@H-TiO2 nanocomposites with enhanced magnetic and photoconversion effects for wide applications : from photocatalysis to imaging-guided photothermal cancer therapy |
| title_full_unstemmed | Rational design of multifunctional Fe@γ-Fe2O3@H-TiO2 nanocomposites with enhanced magnetic and photoconversion effects for wide applications : from photocatalysis to imaging-guided photothermal cancer therapy |
| title_short | Rational design of multifunctional Fe@γ-Fe2O3@H-TiO2 nanocomposites with enhanced magnetic and photoconversion effects for wide applications : from photocatalysis to imaging-guided photothermal cancer therapy |
| title_sort | rational design of multifunctional fe γ fe2o3 h tio2 nanocomposites with enhanced magnetic and photoconversion effects for wide applications from photocatalysis to imaging guided photothermal cancer therapy |
| topic | Science::Biological sciences::Biochemistry Fe@γ‐Fe2O3@H‐TiO2 Hydrogenated TiO2 |
| url | https://hdl.handle.net/10356/143685 |
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