TY - JOUR
T1 - 3D visible-light-driven plasmonic oxide frameworks deviated from liquid metal nanodroplets
AU - Alsaif, Manal M. Y. A.
AU - Haque, Farjana
AU - Alkathiri, Turki
AU - Krishnamurthi, Vaishnavi
AU - Walia, Sumeet
AU - Hu, Yihong
AU - Jannat, Azmira
AU - Mohiuddin, Md
AU - Xu, Kai
AU - Khan, Muhammad Waqas
AU - Ma, Qijie
AU - Wang, Yichao
AU - Pillai, Naresh
AU - Murdoch, Billy J.
AU - Dickey, Michael D.
AU - Zhang, Bao Yue
AU - Ou, Jian Zhen
PY - 2021
Y1 - 2021
N2 - Eutectic gallium-indium (EGaIn) liquid metal droplets have been considered as a suitable platform for producing customized 3D composites with functional nanomaterials owing to their soft and highly reductive surface. Herein, the synthesis of a 3D plasmonic oxide framework (POF) is reported by incorporating the ultra-thin angstrom-scale-porous hexagonal molybdenum oxide (h-MoO3) onto the spherical EGaIn nanodroplets through ultrasonication. Simultaneously, a large number of oxygen vacancies form in h-MoO3, boosting its free charge carrier concentration and therefore generating a broad surface plasmon resonance across the whole visible light spectrum. The plasmonic chemical sensing properties of the POF is investigated by the surface-enhanced Raman scattering detection of rhodamine 6G (R6G) at 532 nm, in which the minimum detectable concentration is 10(-8) m and the enhancement factor reached up to 6.14 x 10(6). The extended optical absorption of the POF also allowed the efficient degradation of the R6G dye under the excitation of ultraviolet-filtered simulated solar light. Furthermore, the POF exhibits remarkable photocurrent responses towards the entire visible light region with the maximum response of approximate to 1588 A W-1 at 455 nm. This work demonstrates the great potential of the liquid metal-based POFs for high-performance sensing, catalytic, and optoelectronic devices.
AB - Eutectic gallium-indium (EGaIn) liquid metal droplets have been considered as a suitable platform for producing customized 3D composites with functional nanomaterials owing to their soft and highly reductive surface. Herein, the synthesis of a 3D plasmonic oxide framework (POF) is reported by incorporating the ultra-thin angstrom-scale-porous hexagonal molybdenum oxide (h-MoO3) onto the spherical EGaIn nanodroplets through ultrasonication. Simultaneously, a large number of oxygen vacancies form in h-MoO3, boosting its free charge carrier concentration and therefore generating a broad surface plasmon resonance across the whole visible light spectrum. The plasmonic chemical sensing properties of the POF is investigated by the surface-enhanced Raman scattering detection of rhodamine 6G (R6G) at 532 nm, in which the minimum detectable concentration is 10(-8) m and the enhancement factor reached up to 6.14 x 10(6). The extended optical absorption of the POF also allowed the efficient degradation of the R6G dye under the excitation of ultraviolet-filtered simulated solar light. Furthermore, the POF exhibits remarkable photocurrent responses towards the entire visible light region with the maximum response of approximate to 1588 A W-1 at 455 nm. This work demonstrates the great potential of the liquid metal-based POFs for high-performance sensing, catalytic, and optoelectronic devices.
UR - https://hdl.handle.net/1959.7/uws:71256
U2 - 10.1002/adfm.202106397
DO - 10.1002/adfm.202106397
M3 - Article
SN - 1616-301X
VL - 31
JO - Advanced Functional Materials
JF - Advanced Functional Materials
IS - 52
M1 - 2106397
ER -