Mechanism of supported gold nanoparticles as photocatalysts under ultraviolet and visible light irradiation

Zhu, Hua; Chen, Xi; Zheng, Zhanfeng; Ke, Xuebin; Jaatinen, Esa; Zhao, Jincai; Guo, Cheng; Xie, Tengfeng; Wang, Dejun

doi:10.1039/b917052a

Cited by 275 publications

(202 citation statements)

References 25 publications

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“…Chen et al showed that Au NPs are active for HCHO oxidation to CO 2 under 600-700 nm red light irradiation [13,33,127,128]. Hot electrons can drive also H 2 dissociation on plasmonic Au NPs at room temperature and laser intensity of~2 W cm −2 [129,130].…”

Section: Direct Plasmonic Photocatalysismentioning

confidence: 99%

Solar-Powered Plasmon-Enhanced Heterogeneous Catalysis

et al. 2016

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Photocatalysis uses semiconductors to convert sunlight into chemical energy. Recent reports have shown that plasmonic nanostructures can be used to extend semiconductor light absorption or to drive direct photocatalysis with visible light at their surface. In this review, we discuss the fundamental decay pathway of localized surface plasmons in the context of driving solar-powered chemical reactions. We also review different nanophotonic approaches demonstrated for increasing solar-tohydrogen conversion in photoelectrochemical water splitting, including experimental observations of enhanced reaction selectivity for reactions occurring at the metalsemiconductor interface. The enhanced reaction selectivity is highly dependent on the morphology, electronic properties, and spatial arrangement of composite nanostructures and their elements. In addition, we report on the particular features of photocatalytic reactions evolving at plasmonic metal surfaces and discuss the possibility of manipulating the reaction selectivity through the activation of targeted molecular bonds. Finally, using solar-tohydrogen conversion techniques as an example, we quantify the efficacy metrics achievable in plasmon-driven photoelectrochemical systems and highlight some of the new directions that could lead to the practical implementation of solar-powered plasmon-based catalytic devices.

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Section: Direct Plasmonic Photocatalysismentioning

confidence: 99%

Solar-Powered Plasmon-Enhanced Heterogeneous Catalysis

et al. 2016

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“…[147～151] ; 最后, SPR 非辐射弛豫最终会转化为热, 这种光热效应会导致纳米结构局域快速升温 , 从而为表面化学反应提供必要的活化能 [21,152,153] . 这些独特的性质使得金属纳米结构成为一类极具潜力的光能转化材料 [20] , 现有研究表明金属纳米结构通过激发 SPR 可以对许多重要的反应都表现出良好的催化活性, 如光解水反应 [139～143] , 光催化 CO 2 还原 [154,155] …”

Section: 反应机理unclassified

Surface-enhanced Raman Spectroscopy and Plasmon-Assisted Photocatalysis ofp-Aminothiophenol

Zhao¹,

Wu²,

Ren³

2014

Acta Chim. Sinica

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“…41 It is also apparent that interband transitions dominate the absorption of the metal nanoparticles for wavelengths shorter than 475 nm, 41 a fact that has been recognized in very few cases in the reports on plasmonic photocatalysis. [42][43][44] Thus, quantitative experiments were performed to evaluate the amount of TEMPOL regenerated as a function of the irradiation time by exciting the samples at 450 ± 12 and 530 ± 12 nm. Results are shown in Fig.…”

Section: Tempol ↔ Tempol-h Interconversionmentioning

confidence: 99%

Modulation of the electron transfer processes in Au–ZnO nanostructures

et al. 2015

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Plasmonic nanostructures comprising Au and ZnO nanoparticles synthesized by the spontaneous reduction of HAuCl 4 in ethylene glycol were used to assess the possibility of modulating the direction of the electron transfer processes at the interface. One electron UV reduction and visible oxidation of the reversible couple TEMPOL/TEMPOL-H was confirmed by EPR spectroscopy. The apparent quantum yield for TEMPOL-H conversion under continuous wave visible excitation depends on the irradiation wavelength, being 0.57% and 0.27% at 450 ± 12 and 530 ± 12 nm, respectively. These results indicate that both the surface plasmon resonance and the interband transition from the 5d to the 6s level of Au nanoparticles contribute to the visible activity of the nanostructure. In addition, by detecting free electron conduction band electrons in ZnO, after the visible excitation of Au/ZnO nanostructures, we provide direct evidence of the photoexcited electron transfer from gold nanoparticles to ZnO.

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Mechanism of supported gold nanoparticles as photocatalysts under ultraviolet and visible light irradiation

Abstract: Gold nanoparticles strongly absorb both visible light and ultraviolet light to drive an oxidation reaction for a synthetic dye, as well as phenol degradation and selective oxidation of benzyl alcohol under UV light.

Cited by 275 publications

References 25 publications

Solar-Powered Plasmon-Enhanced Heterogeneous Catalysis

Solar-Powered Plasmon-Enhanced Heterogeneous Catalysis

Surface-enhanced Raman Spectroscopy and Plasmon-Assisted Photocatalysis ofp-Aminothiophenol

Modulation of the electron transfer processes in Au–ZnO nanostructures

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