Plasmonically-assisted nanoarchitectures for solar water splitting: Obstacles and breakthroughs

Lee, Joong Bum; Choi, Shinyoung; Kim, Jeong‐A; Nam, Yoon Sung

doi:10.1016/j.nantod.2017.08.008

Cited by 59 publications

(39 citation statements)

References 191 publications

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“…As displayed in fig. S6 (C and D), we observed a localized surface plasmon resonance (LSPR) band of the AgNPs, which shows the resonant harmonic oscillation of surface electrons in AgNPs upon incident electromagnetic radiation on AgNPs ( 20 ). In contrast, a negligible LSPR band was detected in the absence of NAD + or light (fig.…”

Section: Resultsmentioning

confidence: 99%

Nicotinamide adenine dinucleotide as a photocatalyst

et al. 2019

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Nicotinamide adenine dinucleotide (NAD+) is a key redox compound in all living cells responsible for energy transduction, genomic integrity, life-span extension, and neuromodulation. Here, we report a new function of NAD+ as a molecular photocatalyst in addition to the biological roles. Our spectroscopic and electrochemical analyses reveal light absorption and electronic properties of two π-conjugated systems of NAD+. Furthermore, NAD+ exhibits a robust photostability under UV-Vis-NIR irradiation. We demonstrate photocatalytic redox reactions driven by NAD+, such as O2 reduction, H2O oxidation, and the formation of metallic nanoparticles. Beyond the traditional role of NAD+ as a cofactor in redox biocatalysis, NAD+ executes direct photoactivation of oxidoreductases through the reduction of enzyme prosthetic groups. Consequently, the synergetic integration of biocatalysis and photocatalysis using NAD+ enables solar-to-chemical conversion with the highest-ever-recorded turnover frequency and total turnover number of 1263.4 hour−1 and 1692.3, respectively, for light-driven biocatalytic trans-hydrogenation.

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Section: Resultsmentioning

confidence: 99%

Nicotinamide adenine dinucleotide as a photocatalyst

et al. 2019

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“…Therefore, plasmonic nanostructures strengthen the light‐matter interaction by strong plasmon‐exciton coupling that strictly confine the excitons in‐plane, bound, resonate with large strength . Upon the optical illumination, the excited plasmons possess two decay routes, including radiative re‐emission of resonant photons or nonradiative decay transferring the accumulated energy to electrons . The nonradiative energetic electrons are hot electrons that can inject into the conduction band of semiconductor via the Schottky contact of metal/semiconductor .…”

Section: Introductionmentioning

confidence: 99%

“…However, it diminishes the carrier mobility in semiconductors. Compared to the doping method, the Schottky contact has no side effects for semiconductors . Moreover, the optical properties can be well tuned across the visible spectrum to the near‐infrared region via precisely controlling the size and topography.…”

Section: Introductionmentioning

confidence: 99%

A Critical Review on Enhancement of Photocatalytic Hydrogen Production by Molybdenum Disulfide: From Growth to Interfacial Activities

Zhang

Tong

et al. 2019

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Ultrathin 2D molybdenum disulfide (MoS2), which is the flagship of 2D transition‐metal dichalcogenide nanomaterials, has drawn much attention in the last few years. 2D MoS2 has been banked as an alternative to platinum for highly active hydrogen evolution reaction because of its low cost, high surface‐to‐volume ratio, and abundant active sites. However, when MoS2 is used directly as a photocatalyst, contrary to public expectation, it still performs poorly due to lateral size, high recombination ratio of excitons, and low optical cross section. Besides, simply compositing MoS2 as a cocatalyst with other semiconductors cannot satisfy the practical application, which stimulates the pursual of a comprehensive insight into recent advances in synthesis, properties, and enhanced hydrogen production of MoS2. Therefore, in this Review, emphasis is given to synthetic methods, phase transitions, tunable optical properties, and interfacial engineering of 2D MoS2. Abundant ways of band edge tuning, structural modification, and phase transition are addressed, which can generate the neoteric photocatalytic systems. Finally, the main challenges and opportunities with respect to MoS2 being a cocatalyst and coherent light–matter interaction of MoS2 in photocatalytic systems are proposed.

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“…Recently, plasmonic metals have attracted increasing attention as a light-harvesting material for PEC and photocatalytic applications because they are stable and strongly respond to visible light via localized surface plasmon resonance (LSPR) with excellent absorption cross-section 22 . After excitation, the LSPR energy decays non-radiatively via Landau damping, creating highly energetic charge carriers, which are energetic electron-hole pairs, denoted as ‘hot carriers’ 23 .…”

Section: Introductionmentioning

confidence: 99%

“…After excitation, the LSPR energy decays non-radiatively via Landau damping, creating highly energetic charge carriers, which are energetic electron-hole pairs, denoted as ‘hot carriers’ 23 . Plasmon-induced hot carriers decay through electron-electron (10–100 fs) and electron-phonon (100 fs–1 ps) relaxations to cause thermal dissipation of the LSPR energy 22 , 24 , 25 . This ultrafast relaxation makes it crucial for the plasmon-induced hot carriers to be rapidly separated and transferred to drive a chemical reaction 26 .…”

Section: Introductionmentioning

confidence: 99%

Multilayered Plasmonic Heterostructure of Gold and Titania Nanoparticles for Solar Fuel Production

Kim

Son

Nam

2018

Sci Rep

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Solar fuel production via photoelectrochemical (PEC) water splitting has attracted great attention as an approach to storing solar energy. However, a wide range of light-harvesting materials is unstable when exposed to light and oxidative conditions. Here we report a robust, multilayered plasmonic heterostructure for water oxidation using gold nanoparticles (AuNPs) as light-harvesting materials via localized surface plasmon resonance (LSPR). The multilayered heterostructure is fabricated using layer-by-layer self-assembly of AuNPs and TiO2 nanoparticles (TNPs). Plasmon-induced hot electrons are transferred from AuNPs to TNPs over the Au/TiO2 Schottky barrier, resulting in charge separation of hot carriers. Plasmonic photoanodes for water oxidation are completed by incorporating a Co-based oxygen-evolving catalyst on the multilayered heterostructure to scavenge hot holes. Light absorption capability and PEC properties of the photoanodes are investigated as a function of the number of AuNP/TNP bilayers. The PEC properties exhibits dependence on the number of the bilayers, which is affected by charge transport within the multilayered heterostructures. Photocurrent density and decrease in impedance by irradiation indicates significant photoactivity by LSPR excitation.

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Plasmonically-assisted nanoarchitectures for solar water splitting: Obstacles and breakthroughs

Cited by 59 publications

References 191 publications

Nicotinamide adenine dinucleotide as a photocatalyst

Nicotinamide adenine dinucleotide as a photocatalyst

A Critical Review on Enhancement of Photocatalytic Hydrogen Production by Molybdenum Disulfide: From Growth to Interfacial Activities

Multilayered Plasmonic Heterostructure of Gold and Titania Nanoparticles for Solar Fuel Production

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