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Catalysts
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Plasmon-Assisted Photocatalysis in Hybrid Nanoparticles
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Plasmon-Assisted Photocatalysis in Hybrid Nanoparticles

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Photocatalysis".

Deadline for manuscript submissions: closed (30 September 2022) | Viewed by 5279

Special Issue Editor

Dr. Li Zhou

E-Mail Website
Guest Editor
School of Physics and Technology, Wuhan University, Wuhan 430072, China
Interests: nanophotonics; plasmonics; functional materials and devices at nanoscale as well as their applications in optical; optoelectronic; energy-related; and biomedical fields

Special Issue Information

Dear Colleagues,

Surface plasmon resonance strongly enhances local electromagnetic fields and various light–matter interactions, which attracts intense attention in photocatalysis. Plasmonic hybrids (e.g., metal and alloyed nanoparticles, metal-semiconductor hetero-nanocrystals) have exhibited strong potential in photocatalytic applications due to various plasmonic enhancement effects, such as plasmon-enhanced absorption and scattering, plasmon resonance energy transfer, hot-electron generation, and the photothermal effect. The aim of this Special Issue is to cover promising recent research in photocatalysis using plasmonic hybrids. Contributions on photocatalyst preparation, reaction mechanism, theoretical modeling and applications are all welcome.

Dr. Li Zhou
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • surface plasmon resonances
  • metal nanoparticles
  • alloyed nanoparticles
  • semiconductor nanocrystals
  • metal-semiconductor nanostructures
  • photocatalysis

Published Papers (2 papers)

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Research

13 pages, 2839 KiB  
Article
Controlled Synthesis and Photoelectrochemical Performance Enhancement of Cu2−xSe Decorated Porous Au/Bi2Se3 Z-Scheme Plasmonic Photoelectrocatalyst
by Linyu Hu, Yuqi Li, Wenbo Chen, Xiaogang Liu, Shan Liang, Ziqiang Cheng, Jianbo Li and Li Zhou
Catalysts 2022, 12(4), 359; https://doi.org/10.3390/catal12040359 - 23 Mar 2022
Cited by 9 | Viewed by 2455
Abstract
In this paper, uniform Cu2−xSe-modified Au/Bi2Se3 hybrid nanoparticles with porous shells have been prepared through a cation exchange method. Bi2Se3/Cu2−xSe Z-scheme heterojunction is introduced onto Au nanocube by replacing Bi3+ with [...] Read more.
In this paper, uniform Cu2−xSe-modified Au/Bi2Se3 hybrid nanoparticles with porous shells have been prepared through a cation exchange method. Bi2Se3/Cu2−xSe Z-scheme heterojunction is introduced onto Au nanocube by replacing Bi3+ with Cu2+. Owing to the effective coupling between Au core and semiconductor shells, Au/Bi2Se3/Cu2−xSe hybrids present a broad and strong plasmon resonance absorption in the visible band. More intriguingly, the carrier lifetime of Au/Bi2Se3/Cu2−xSe hybrid photoelectrodes can be further tailored with corresponding Cu2−xSe content. Through parameter optimization, 0.1-Au/Bi2Se3/Cu2−xSe electrode exhibits the longest electron lifetime (86.03 ms) among all the parallel samples, and corresponding photoelectrochemical performance enhancement is also observed in the tests. Compared with that of pure Bi2Se3 (0.016% at 0.90 V vs. RHE) and Au/Bi2Se3 (0.02% at 0.90 V vs. RHE) nanoparticles, the maximum photoconversion efficiency of porous Au/Bi2Se3/Cu2−xSe hybrid photoanodes increased by 5.87 and 4.50 times under simulated sunlight illumination, attributing to the cooperation of Z-scheme heterojunction and plasmon resonance enhancement effects. All the results indicate that Au/Bi2Se3/Cu2−xSe porous hybrids combine eco-friendliness with excellent sunlight harvesting capability and effectively inhibiting the charge recombination, which provide a new idea for efficient solar-driven water splitting. Full article
(This article belongs to the Special Issue Plasmon-Assisted Photocatalysis in Hybrid Nanoparticles)
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11 pages, 3834 KiB  
Article
In Situ Partial Sulfidation for Preparing Cu/Cu2−xS Core/Shell Nanorods with Enhanced Photocatalytic Degradation
by Li Cheng, Yu-Ting Zhong, Qu-Quan Wang and Li Zhou
Catalysts 2022, 12(2), 147; https://doi.org/10.3390/catal12020147 - 25 Jan 2022
Cited by 1 | Viewed by 2435
Abstract
Herein, we report an approach to prepare Cu/Cu2−xS core/shell nanorods by in situ sulfidation of copper nanorods. Firstly, copper nanorods with tunable longitudinal surface plasmon resonances were synthesized by a seed-mediated method using Au nanoparticles as seeds. A convenient in situ [...] Read more.
Herein, we report an approach to prepare Cu/Cu2−xS core/shell nanorods by in situ sulfidation of copper nanorods. Firstly, copper nanorods with tunable longitudinal surface plasmon resonances were synthesized by a seed-mediated method using Au nanoparticles as seeds. A convenient in situ sulfidation method was then applied to convert the outermost layer of Cu nanorods into Cu2−xS, to increase their stability and surface activity in photocatalytic applications. The thickness of Cu2−xS layer can be adjusted by controlling the amount of S source. The Cu/Cu2−xS core/shell nanorods exhibits two characteristic surface plasmon resonances located in visible and near-infrared regions, respectively. The photocatalytic performances of Cu nanorods and their derivatives were evaluated by measuring the degradation rate of methyl orange dyes. Compared with Cu nanorods, the Cu/Cu2−xS core/shell nanorods demonstrate more than a 13.6-fold enhancement in the degradation rate at 40 min. This work suggests a new direction for constructing derivative nanostructures of copper nanorods and exploring their applications. Full article
(This article belongs to the Special Issue Plasmon-Assisted Photocatalysis in Hybrid Nanoparticles)
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