Tailor-engineered plasmonic single-lattices: harnessing localized surface plasmon resonances for visible-NIR light-enhanced photocatalysis,Catalysis Science & Technology

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Tailor-engineered plasmonic single-lattices: harnessing localized surface plasmon resonances for visible-NIR light-enhanced photocatalysis
Catalysis Science & Technology ( IF 4.4 ) Pub Date : 2020-03-27 , DOI: 10.1039/c9cy02561h
Siew Yee Lim _{1,

2,

3,

4,

5} , Cheryl Suwen Law _{1,

2,

3,

4,

5} , Francesc Bertó-Roselló _{6,

7,

8,

9} , Lina Liu _{1,

2,

3,

4,

10} , Marijana Markovic _{1,

2,

3,

4,

11} , Josep Ferré-Borrull _{6,

7,

8,

9} , Andrew D. Abell _{2,

3,

4,

5,

12} , Nicolas H. Voelcker _{4,

13,

14,

15,

16} , Lluís F. Marsal _{6,

7,

8,

9} , Abel Santos _{1,

2,

3,

4,

5}

Affiliation

School of Chemical Engineering and Advanced Materials
The University of Adelaide
Adelaide
Australia
Institute for Photonics and Advanced Sensing
Department of Electronic, Electric, and Automatics Engineering
University Rovira i Virgili
Tarragona 43007
Spain
State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering
School of Agriculture Food and Wine
ARC Centre of Excellence for Nanoscale BioPhotonics
Melbourne Centre for Nanofabrication
Victorian Node of the Australian National Fabrication Facility
Monash University
Monash Institute of Pharmaceutical Sciences

A platform material composed of 2D gold (Au) nanodot plasmonic single-lattices (Au-nD-PSLs) featuring tailor-engineered geometric features for visible-NIR light-driven enhanced photocatalysis is presented. Au-nD-PSLs efficiently harness incident visible-NIR electromagnetic waves to accelerate photo-chemical reactions by localized surface plasmon resonance (LSPR) effects. Au-nD-PSLs are fabricated by a straightforward, industrially scalable template-assisted approach, using nanopatterned aluminum substrates as templates. The method overcomes the constraints of direct writing lithography and allows Au-nD-PSLs to be transferred to arbitrary functional flexible substrates. Triangular lattice Au-nD-PSLs feature tunable and controllable characteristic LSPR bands across the visible spectrum. Strongly localized electromagnetic fields around Au-nD-PSLs are responsible for the outstanding photocatalytic performance of these plasmonic nanostructures, as demonstrated by finite-difference time-domain simulations and experimental observations. Our approach of rational engineering of LSPR effects in Au-nD-PSLs provides exciting opportunities to develop high-performing and reusable photocatalysts that harvest the visible-NIR spectrum for a broad range of optoelectronic and plasmonic applications.

中文翻译：

量身定制的等离激元单晶格：利用局部表面等离振子共振进行可见近红外光谱增强的光催化

提出了一种平台材料，该材料由2D金（Au）纳米点等离激元单晶格（Au-nD-PSLs）组成，具有可定制的几何特征，用于可见NIR光驱动的增强光催化作用。Au-nD-PSL通过局部表面等离振子共振（LSPR）效应有效地利用可见NIR入射电磁波来加速光化学反应。Au-nD-PSL通过一种直接的，可在工业上扩展的模板辅助方法制造，并使用纳米图案化的铝基板作为模板。该方法克服了直接写入光刻的限制，并允许将Au-nD-PSL转移到任意功能性柔性基板上。三角晶格Au-nD-PSL在整个可见光谱范围内具有可调和可控的特征LSPR带。Au-nD-PSL周围的强局部电磁场是这些等离激元纳米结构出色的光催化性能的原因，这在时域有限差分模拟和实验观察中得到了证明。我们对Au-nD-PSL中LSPR效应进行合理设计的方法为开发高性能且可重复使用的光催化剂提供了令人振奋的机会，这些光催化剂可收集可见的NIR光谱，用于各种光电和等离激元应用。

更新日期：2020-03-27

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