Growing In‐Plane Multiplex Plasmonic Arrays for Synergistic Enhanced Photocurrent Response

Liang, Wenkai; Li, Dong; Sun, Yinghui; Zhao, Liang; Zhong, Liubiao; Liang, Zhiqiang; Abdulhalim, Ibrahim; Jiang, Lin

doi:10.1002/admi.201900966

Cited by 5 publications

(3 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Two kinds of bottom‐up self‐assembly methods were utilized to prepare SERS substrates with different PD, including electrostatic interaction and LLISA technique. [ 60,61 ] First, the assembly of R‐Au NRs sub‐monolayer film was realized by keeping the positively charged Si wafer into negatively charged colloidal solutions for different time, 0.25, 0.5, 1, 3, 6, and 12 h, respectively. In this system, negatively charged Au NRs and positively charged Si wafer are bound tightly via electrostatic interaction, and the density of R‐Au NRs sub‐monolayer film can be controlled by varying immersion time.…”

Section: Resultsmentioning

confidence: 99%

From Dilute to Multiple Layers: Bottom‐Up Self‐Assembly of Rough Gold Nanorods as SERS Platform for Quantitative Detection of Thiram in Soil

Lin

et al. 2021

Adv Materials Inter

View full text Add to dashboard Cite

The nanoparticle density (PD) of the substrates is crucial for surface‐enhanced Raman scattering (SERS) performance. Here, bottom‐up SERS substrates based on rough gold nanorods (R‐Au NRs) with different PD are fabricated and their SERS property are investigated. In particular, R‐Au NRs are deposited on the Si wafer from sparse to dense through electrostatic interaction and from monolayer to multiple layers by interface self‐assembly technique. It is found that the SERS intensity increases dramatically with increasing PD and remains almost unchanged when the PD increases to 241.22 counts µm−2, and the limited penetration depth of laser is the reason for the intensity saturation. Additionally, similar results are observed in the smooth Au NRs substrates, re‐confirming the PD‐dependent SERS performance. Importantly, the SERS activity of R‐Au NRs substrates is higher than smooth Au NRs substrates in each PD, indicating that R‐Au NRs can produce stronger electromagnetic field enhancement, which is supported by the theoretical simulation results. Finally, it is demonstrated that the optimal SERS substrates can be effectively utilized for the quantitative measurement of thiram in soil. Briefly, the PD of substrates has a great impact on SERS activity, which offers an idea for the design of highly efficient SERS substrates.

show abstract

Section: Resultsmentioning

confidence: 99%

From Dilute to Multiple Layers: Bottom‐Up Self‐Assembly of Rough Gold Nanorods as SERS Platform for Quantitative Detection of Thiram in Soil

Lin

et al. 2021

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…Therefore, combining Au and Ag into one system has been considered as a useful method to acquire stronger LSPR effect and expand their application fields [94][95][96] . Furthermore, multiplex plasmonic nanoparticle arrays were fabricated for synergistic enhanced photocurrent response by Liang et al 97 . Through self-assembly and in-situ growth techniques, Au NPs arrays and Au@Ag NPs arrays were located simultaneously on one platform.…”

Section: Multi-component Metal Nanostructuresmentioning

confidence: 99%

Rational Design of Plasmonic Metal Nanostructures for Solar Energy Conversion

et al. 2022

Self Cite

View full text Add to dashboard Cite

Plasmonic metal nanostructures, possessing unique surface plasmon resonance properties, show excellent capabilities for light trapping and coupling. On this basis, various plasmonic metal nanostructures offer extraordinary opportunities to promote the conversion efficiency of solar energy to electric energy, hydrogen energy or thermal energy, etc. In this review article, we highlight a number of recent research achievements on the rational design of plasmonic metal nanostructures so as to maximize the utilization of the entire solar spectrum. Compared with single metal nanoparticle, multiplex (such as multi-compositions, sizes, or shapes) nanoparticle structures emphasize advantages in broadening absorption range and improving light-utilization efficiency. This review is ended up with discussions about the challenges in this research field and proposals of some prospects for future directions.

show abstract

“…The measured photocurrent density of ZnO thin film with Au/Ag bimetallic NPs under simulated solar light was increased from 4.0 μA cm À2 (pristine ZnO) to 7.3 μA cm À2 , and was also better than ZnO with Au or Ag monometallic NPs. [42] Furthermore, multiplex plasmonic NP arrays with different element compositions were fabricated for synergistically enhanced photocurrent response by Liang et al [43] Through self-assembly and in situ growth techniques, Au NPs arrays and Au@Ag NPs arrays were located simultaneously on one platform. Broadened extinction spectra and enhanced intensity were observed for complex Au NPs and Au@Ag NPs arrays.…”

Section: Photoelectrochemical Water Splittingmentioning

confidence: 99%

Plasmonic Metal Nanostructures as Efficient Light Absorbers for Solar Water Splitting

Wang

Liang

Qin

et al. 2021

Adv Energy and Sustain Res

Self Cite

View full text Add to dashboard Cite

The increasing use of traditional fossil fuels has led to serious environmental concerns, such as air pollution, global warming, and possible climate anomalies. For the purpose of sustaining economic growth, solar energy has become a considerably promising energy alternative to alleviate the energy crisis and environmental stress. [1] During the past few decades, photo-driven catalytic reactions have received widespread attention because of the ability of converting inexhaustible solar energy into available chemical energy, especially the clean hydrogen energy source. [2] However, the current photocatalyst materials are far from satisfactory and the actual catalytic performance is still insufficient for large-scale practical applications.Plasmonic metal (typically Au, Ag, Cu, and Al) nanoparticles (NPs) exhibit fantastic localized surface plasmon resonance (LSPR) property, which refers to the collective oscillation of free electrons around particles' surface when the incident light matches the resonant frequency of the collective electrons. [3] Through engineering the size, morphology, composition, and dielectric environment of NPs, LSPR properties can be customized to achieve optimized performances. Surface plasmon decays quickly, so the energy stored in the plasma can be released through far-field light scattering, nearfield electromagnetic field enhancement, and hot carrier generation. The strong interaction of plasmonic metal nanostructures with light makes them become commendable light absorber materials, and the absorbed energy can be efficiently transferred into the adjacent semiconductors or adsorbates. [4] Therefore, the introduction of plasmonic metal nanostructures into catalytic reactions provides a promising avenue to maximize the utilization of sunlight and facilitate the conversion from the inexhaustible solar energy into usable chemical energy. [5] In this review, we focus on the LSPR properties of plasmonic metal nanostructures and highlight recent research progress on the applications of plasmonic metal nanostructures in photocatalytic, photoelectrochemical (PEC) (electro-assisted photocatalytic), and photo-assisted electrocatalytic water splitting technologies, including the hydrogen evolution reaction (HER) and the oxygen evolution reaction (OER). In addition, the relevant structure design, mechanism exploration, and performance promotion are summarized and discussed. Finally, we put forward the perspectives and challenges in plasmon-enhanced catalysis, especially photo-assisted electrocatalysis, which has not been extensively studied at present but has significant research value. Overall, plasmonic photocatalysts hold great promises in the future and there is plenty of room to achieve the theoretically optimal catalytic performances.

show abstract

Growing In‐Plane Multiplex Plasmonic Arrays for Synergistic Enhanced Photocurrent Response

Cited by 5 publications

References 51 publications

From Dilute to Multiple Layers: Bottom‐Up Self‐Assembly of Rough Gold Nanorods as SERS Platform for Quantitative Detection of Thiram in Soil

From Dilute to Multiple Layers: Bottom‐Up Self‐Assembly of Rough Gold Nanorods as SERS Platform for Quantitative Detection of Thiram in Soil

Rational Design of Plasmonic Metal Nanostructures for Solar Energy Conversion

Plasmonic Metal Nanostructures as Efficient Light Absorbers for Solar Water Splitting

Contact Info

Product

Resources

About