Plasmonic nanoparticle-film-assisted photoelectrochemical catalysis across the entire visible-NIR region
Source abstract
Abstract
Low solar light absorption and high electron-hole pair recombination are still the main challenges for solar energy conversion. Here, we design a plasmonic nanoparticle (NP)-film with a unique structure combining the advantages of a Au NP and film, which exhibits strong broadband absorption from the visible to near-infrared (NIR) wavelength range. In addition, the high density of sub-1 nm inter-particle gaps in the Au NP-film supports electromagnetic field enhancement of several orders of magnitude that greatly promotes the generation and separation of electron-hole pairs. Accordingly, the plasmonic NP-film-assisted photocatalyst (TiO2/90Au/TiO2) leads to an 88-fold increase in the photocurrent density at 0.75 V vs. RHE in 25% methanol solution under visible-NIR light irradiation (λ > 420 nm) compared to a TiO2 film, which is higher than those of the ever reported Au/TiO2 photocatalysts in the entire visible-NIR range. Our finding indicates a promising way to explore full solar spectrum photocatalysts, which can be easily extended to other energy conversion applications.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Photocatalysis Techniques · Quantum Dots Synthesis And Properties · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Functional Nano & Soft Materials Laboratory (FUNSOM)
Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices
Joint International Research Laboratory of Carbon-Based Functional Materials and Devices
Suzhou 215123
China
College of Energy
Soochow Institute for Energy and Materials Innovations & Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province
Soochow University
Suzhou 215006
Department of Electrical and Computer Engineering
National University of Singapore
Singapore 117583
Singapore
Department of physics
Department of Electrooptics and Photonics Engineering and the Ilse-Katz Center for Nanoscale Science and Technology
School of Electrical and Computer Engineering
Ben Gurion University of the Negev
Beer Sheva 84105
Israel
School of Environment and Civil Engineering
Dongguan University of Technology
Dongguan
Funding
National Natural Science Foundation of China · Ministry of Science and Technology of the People's Republic of China · Ministry of Science, Technology and Space · Higher Education Discipline Innovation Project · Collaborative Innovation Center of Suzhou Nano Science and Technology · Priority Academic Program Development of Jiangsu Higher Education Institutions
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