Molecular Cocatalyst-Induced Enhancement of the Plasmon-Mediated Coupling of <i>p</i>-Nitrothiophenols at the Silver Nanoparticle–Graphene Oxide Interface

Guan, Mengdan; Zhu, Yameng; Yue, Xiang-an; Yan, Liang; Sheng, Huixiang; Wang, Jin; Zhang, Chengyu; Peng, Qiming; Lü, Gang

doi:10.1021/acsanm.1c02430

Cited by 10 publications

(17 citation statements)

References 47 publications

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“…Under light illumination, localized electromagnetic field, local thermal heating, and excited hot carriers can be generated in the vicinity of plasmonic nanostructures [11][12][13] . Because of these extraordinary properties, plasmonic nanoparticles have been used to trigger and accelerate many reactions, such as the reduction of p-nitrophenol, reduction of carbon dioxide, and photocatalytic water splitting [14][15][16] . However, plasmon-generated hot carriers cannot be separated effectively in single-component plasmonic nanostructures, limiting their utilization in chemical reactions 17 .…”

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confidence: 99%

Strong synergy between gold nanoparticles and cobalt porphyrin induces highly efficient photocatalytic hydrogen evolution

et al. 2023

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The reaction efficiency of reactants near plasmonic nanostructures can be enhanced significantly because of plasmonic effects. Herein, we propose that the catalytic activity of molecular catalysts near plasmonic nanostructures may also be enhanced dramatically. Based on this proposal, we develop a highly efficient and stable photocatalytic system for the hydrogen evolution reaction (HER) by compositing a molecular catalyst of cobalt porphyrin together with plasmonic gold nanoparticles, around which plasmonic effects of localized electromagnetic field, local heating, and enhanced hot carrier excitation exist. After optimization, the HER rate and turn-over frequency (TOF) reach 3.21 mol g−1 h−1 and 4650 h−1, respectively. In addition, the catalytic system remains stable after 45-hour catalytic cycles, and the system is catalytically stable after being illuminated for two weeks. The enhanced reaction efficiency is attributed to the excitation of localized surface plasmon resonance, particularly plasmon-generated hot carriers. These findings may pave a new and convenient way for developing plasmon-based photocatalysts with high efficiency and stability.

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confidence: 99%

Strong synergy between gold nanoparticles and cobalt porphyrin induces highly efficient photocatalytic hydrogen evolution

et al. 2023

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“…As is known, hot electrons are involved in the plasmon-mediated reduction of PNTP to DMAB. 52,53 Usually, the lifetime of plasmon-generated hot electrons is very short, limiting their utilization in chemical reactions. 8,54 Therefore, the PMPBA-induced acceleration of PNTP reduction may be attributed to the lifetime prolonging of hot electrons.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…As is known, hot electrons are involved in the plasmon-mediated reduction of PNTP to DMAB. , Usually, the lifetime of plasmon-generated hot electrons is very short, limiting their utilization in chemical reactions. , Therefore, the PMPBA-induced acceleration of PNTP reduction may be attributed to the lifetime prolonging of hot electrons. To check the validity of this proposal, EIS and X-ray photoelectron spectroscopy (XPS) were employed to investigate the charge transfer at the plasmon-molecules interfaces.…”

Section: Resultsmentioning

confidence: 99%

Molecular Cocatalyst of p-Mercaptophenylboronic Acid Boosts the Plasmon-Mediated Reduction of p-Nitrothiophenol

Zhang

Sheng

et al. 2022

ACS Appl. Mater. Interfaces

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Localized surface plasmon resonance (LSPR) has been demonstrated to be highly effective in the initialization or acceleration of chemical reactions because of its unique optical properties. However, because of the ultrashort lifetime (fs to ps) of plasmon-generated hot carriers, the potential of LSPR in photochemical reactions has not been fully exploited. Herein, we demonstrate an acceleration of the plasmon-mediated reduction of p-nitrothiophenol (PNTP) molecules on the surface of silver nanoparticles (AgNPs) with in situ Raman spectroscopy. p-Mercaptophenylboronic acid (PMPBA) molecules coadsorbed on AgNP surfaces act as a molecular cocatalyst in the plasmon-mediated reaction, resulting in a boosting of the PNTP reduction. This boosting is attributed to the improved transfer and separation of the plasmon-generated hot carriers at the interface of the AgNPs and coadsorbed PMPBA molecules. Our finding provides a highly simple, cost-effective, and highly effective strategy to promote plasmonic photochemistry by introducing a molecular cocatalyst, and this strategy can be extended to promote various plasmon-mediated reactions.

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“…For spectroscopic measurements, the samples were prepared on quartz substrates via drop-casting. The vibrational spectra of samples were acquired on an FTIR spectrometer (FT/IR-6700, Jasco) and a home-assembled Raman spectrometer. − The absorption spectra of samples were acquired on a UV–vis–NIR spectrometer (UV-3600, Shimadzu). The samples for XRD were prepared on glass slide, and the spectra were acquired on a powder X-ray diffraction spectrometer (Smartlab 3KW, Rigaku, Japan).…”

Section: Methodsmentioning

confidence: 99%

High-Performance Organic Electrochemical Transistor Based on Photo-annealed Plasmonic Gold Nanoparticle-Doped PEDOT:PSS

Zhang

Wang

et al. 2023

ACS Appl. Mater. Interfaces

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Organic electrochemical transistors (OECTs), particularly the ones based on PEDOT:PSS, are excellent candidates for chemical and biological sensing because of their unique advantages. Improving the sensitivity and stability of OECTs is crucially important for practical applications. Herein, the transconductance of OECT is improved by 8-fold to 14.9 mS by doping the PEDOT:PSS channel with plasmonic gold nanoparticles (AuNPs) using a solution-based process followed by photo annealing. In addition, the OECT also possesses high flexibility and cyclic stability. It is revealed that the doping of AuNPs increases the conductivity of PEDOT:PSS and the photo annealing improves the crystallinity of the PEDOT:PSS channel and the interaction between AuNPs and PEDOT:PSS. These changes lead to the increase in transconductance and cyclic stability. The prepared OECTs are also demonstrated to be effective in sensitive detection of glucose within a wide concentration range of 10 nM−1 mM. Our OECTs based on photo-annealed plasmonic AuNP-doped PEDOT:PSS may find great applications in chemical and biological sensing, and this strategy may be extended to prepare many other high-performance OECT-based devices.

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Molecular Cocatalyst-Induced Enhancement of the Plasmon-Mediated Coupling of p-Nitrothiophenols at the Silver Nanoparticle–Graphene Oxide Interface

Cited by 10 publications

References 47 publications

Strong synergy between gold nanoparticles and cobalt porphyrin induces highly efficient photocatalytic hydrogen evolution

Strong synergy between gold nanoparticles and cobalt porphyrin induces highly efficient photocatalytic hydrogen evolution

Molecular Cocatalyst of p-Mercaptophenylboronic Acid Boosts the Plasmon-Mediated Reduction of p-Nitrothiophenol

High-Performance Organic Electrochemical Transistor Based on Photo-annealed Plasmonic Gold Nanoparticle-Doped PEDOT:PSS

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