Plasmonic photocatalysis: an extraordinary way to harvest visible light

Manchala, Saikumar; Elayappan, Vijayakumar; Lee, Hai-Gun

doi:10.1016/b978-0-12-820532-7.00015-1

Cited by 4 publications

(4 citation statements)

References 103 publications

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“…The plasmonic effects depend on various factors, such as free carrier concentrations, morphologies, particle sizes, and distances [84,85]. According to the desired properties and intended application, metal-based plasmonic materials can be readily synthesized using a range of techniques, such as hydrothermal, chemical vapor deposition (CVD), physical vapor deposition (PVD), and biogenic synthesis [75,86]. It is worth noting that the distinction between plasmonic photocatalysts and metal doped/(metal-doped) photocatalysts is not mutually exclusive.…”

Section: Nobel Metal Deposition (Plasmonic Photocatalysts)mentioning

confidence: 99%

Photodegradation of microplastics through nanomaterials: Insights into photocatalysts modification and detailed mechanisms

Xiao,

TIAN,

et al. 2024

Preprint

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Microplastics (MPs) are a critical environmental issue, with impacts ranging from ecosystem contamination to health risks through bioaccumulation. This review addresses the inefficacy of traditional water treatments in removing MPs and proposes photodegradation, particularly via nanomaterial-enhanced photocatalysts, as a solution. Utilizing their unique properties like large surface area and tunable bandgap, nanomaterials significantly improve degradation efficiency. Different strategies for photocatalysts modification to improve photocatalytic performance are thoroughly summarized, with the particular emphasis on element doping and heterojunction construction. Furthermore, this review thoroughly summarizes the possible fundamental mechanisms driving photodegradation of microplastics facilitated by nanomaterials, with a focus on processes like free radical formation and singlet oxygen oxidation. By clearly elucidating these strategies and mechanisms, this review aims to provide valuable insights and inspire further progress in microplastic photodegradation.

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Section: Nobel Metal Deposition (Plasmonic Photocatalysts)mentioning

confidence: 99%

Photodegradation of microplastics through nanomaterials: Insights into photocatalysts modification and detailed mechanisms

Xiao,

TIAN,

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…The plasmonic effects depend on various factors, such as free carrier concentrations, morphologies, particle sizes, and distances [ 104 , 105 ]. According to desired properties and intended application, metal-based plasmonic materials can be readily synthesized using a range of techniques, such as hydrothermal, chemical vapor deposition (CVD), physical vapor deposition (PVD), and biogenic synthesis [ 106 , 107 ]. It is worth noting that the distinction between plasmonic photocatalysts and metal-doped photocatalysts is not mutually exclusive.…”

Section: Enhancement Of Photocatalytic Efficiencymentioning

confidence: 99%

Photodegradation of Microplastics through Nanomaterials: Insights into Photocatalysts Modification and Detailed Mechanisms

Xiao,

Tian,

et al. 2024

Materials

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Microplastics (MPs) pose a profound environmental challenge, impacting ecosystems and human health through mechanisms such as bioaccumulation and ecosystem contamination. While traditional water treatment methods can partially remove microplastics, their limitations highlight the need for innovative green approaches like photodegradation to ensure more effective and sustainable removal. This review explores the potential of nanomaterial-enhanced photocatalysts in addressing this issue. Utilizing their unique properties like large surface area and tunable bandgap, nanomaterials significantly improve degradation efficiency. Different strategies for photocatalyst modification to improve photocatalytic performance are thoroughly summarized, with a particular emphasis on element doping and heterojunction construction. Furthermore, this review thoroughly summarizes the possible fundamental mechanisms driving the photodegradation of microplastics facilitated by nanomaterials, with a focus on processes like free radical formation and singlet oxygen oxidation. This review not only synthesizes critical findings from existing studies but also identifies gaps in the current research landscape, suggesting that further development of these photocatalytic techniques could lead to substantial advancements in environmental remediation practices. By delineating these novel approaches and their mechanisms, this work underscores the significant environmental implications and contributes to the ongoing development of sustainable solutions to mitigate microplastic pollution.

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“…The deposited metal NPs in plasmonic photocatalysts exhibit a robust collective oscillation of surface electrons under light, known as LSPR, which then decays into high-energy hot electrons. Contrary to semiconductor photocatalysts, the hot electrons produced by LSPR in the case of plasmonic photocatalysts can multiply the photocatalyst rate several times with light intensity [ 53 ]. Generation of hot electrons and injection into the semiconductor either indirectly or directly.…”

Section: Plasmonic Effect For Photocatalytic Degradationmentioning

confidence: 99%

A review on plasmonic-based heterojunction photocatalysts for degradation of organic pollutants in wastewater

et al. 2023

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Organic pollutants in wastewater are the biggest problem facing the world today due to population growth, rapid increase in industrialization, urbanization, and technological advancement. There have been numerous attempts to use conventional wastewater treatment techniques to address the issue of worldwide water contamination. However, conventional wastewater treatment has a number of shortcomings, including high operating costs, low efficiency, difficult preparation, fast recombination of charge carriers, generation of secondary waste, and limited light absorption. Therefore, plasmonic-based heterojunction photocatalysts have attracted much attention as a promising method to reduce organic pollutant problems in water due to their excellent efficiency, low operating cost, ease of fabrication, and environmental friendliness. In addition, plasmonic-based heterojunction photocatalysts contain a local surface plasmon resonance that enhances the performance of photocatalysts by improving light absorption and separation of photoexcited charge carriers. This review summarizes the major plasmonic effects in photocatalysts, including hot electron, local field effect, and photothermal effect, and explains the plasmonic-based heterojunction photocatalysts with five junction systems for the degradation of pollutants. Recent work on the development of plasmonic-based heterojunction photocatalysts for the degradation of various organic pollutants in wastewater is also discussed. Lastly, the conclusions and challenges are briefly described and the direction of future development of heterojunction photocatalysts with plasmonic materials is explored. This review could serve as a guide for the understanding, investigation, and construction of plasmonic-based heterojunction photocatalysts for various organic pollutants degradation. Graphical abstract Herein, the plasmonic effects in photocatalysts, such as hot electrons, local field effect, and photothermal effect, as well as the plasmonic-based heterojunction photocatalysts with five junction systems for the degradation of pollutants are explained. Recent work on plasmonic-based heterojunction photocatalysts for the degradation of various organic pollutants in wastewater such as dyes, pesticides, phenols, and antibiotics is discussed. Challenges and future developments are also described.

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Plasmonic photocatalysis: an extraordinary way to harvest visible light

Cited by 4 publications

References 103 publications

Photodegradation of microplastics through nanomaterials: Insights into photocatalysts modification and detailed mechanisms

Photodegradation of microplastics through nanomaterials: Insights into photocatalysts modification and detailed mechanisms

Photodegradation of Microplastics through Nanomaterials: Insights into Photocatalysts Modification and Detailed Mechanisms

A review on plasmonic-based heterojunction photocatalysts for degradation of organic pollutants in wastewater

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