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Lyu P, Hoffman L, Cahua DV, Nguyen SC. From Precious to Earth-Abundant Metallic Nanoparticles: A Trend of Interband Transitions in Photocatalyzed Nitrobenzene Reduction. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2024; 128:14674-14682. [PMID: 39257549 PMCID: PMC11382268 DOI: 10.1021/acs.jpcc.4c03940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2024] [Revised: 08/13/2024] [Accepted: 08/14/2024] [Indexed: 09/12/2024]
Abstract
Metallic nanoparticles have been demonstrated to be versatile photocatalysts, as exemplified by those made from noble and precious metals. Transitioning from precious to earth-abundant metals for sustainable photocatalysis requires benchmarking their catalytic performance. In this work, we attempt to compare the photocatalytic activities of Au, Pd, and Co-B nanoparticles in the reduction of nitrobenzene by hydrazine. Despite their different morphologies and surface structures, Co-B nanoparticles offer the highest catalytic enhancement when comparing their reaction rates under irradiation to those under nonirradiation conditions. The trend of improved photocatalytic performance when transitioning from Au to Pd, and then to Co-B, can be explained by the nature of their d-band positions and corresponding hot carriers photogenerated from interband transitions.
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Affiliation(s)
- Pin Lyu
- Department of Chemistry and Biochemistry, University of California, Merced, 5200 North Lake Road, Merced, California 95343, United States
- Department of Chemistry and Biochemistry, University of North Carolina, Asheville, 1 University Heights, Asheville, North Carolina 28804, United States
| | - Lauren Hoffman
- Department of Chemistry and Biochemistry, University of North Carolina, Asheville, 1 University Heights, Asheville, North Carolina 28804, United States
| | - Daniel Valenzuela Cahua
- Department of Chemistry and Biochemistry, University of California, Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Son C Nguyen
- Department of Chemistry and Biochemistry, University of California, Merced, 5200 North Lake Road, Merced, California 95343, United States
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2
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Li Z, Xu T, Chen H, Wang X. Microglial activation and pyroptosis induced by nano-TiO 2 in marine medaka brain. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2024; 274:107034. [PMID: 39163698 DOI: 10.1016/j.aquatox.2024.107034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 07/29/2024] [Accepted: 07/30/2024] [Indexed: 08/22/2024]
Abstract
Recently, nano-titanium dioxide (nano-TiO2) has been widely distributed over surface water. However, there are few reports on its effects on the central nervous system of fish. In this study, we investigated whether nano-TiO2 enters the medaka brain after exposure and its effect on the brain. Marine medaka brains were examined after exposure to 0.01 g/L nano-TiO2 for 3, 10, and 20 d. Nano-TiO2-like particles were found in the telencephalon of treated fish. There was no obvious brain histopathological injury. The number of irregular mitochondria with absent cristae increased. Gene expression of the apoptosis-related genes, casp8, bcl2b, and bax, decreased significantly in the nano-TiO2 group at 3 d. In contrast, the pyroptosis-related genes, gsdmeb and casp1, and inflammation-related factor, il18, increased significantly. As an activated microglia marker, mRNA expression of cd68 increased significantly in the nano-TiO2 treated group. Moreover, CD68 protein expression also increased significantly at 10 d. Altogether, we show that nano-TiO2 can alter mitochondrial morphology in the telencephalon of medaka, leading to microglial activation and pyroptosis.
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Affiliation(s)
- Zirun Li
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Tao Xu
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Haijin Chen
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China
| | - Xiaojie Wang
- National Demonstration Center for Experimental Fisheries Science Education, Shanghai Ocean University, Shanghai, China; Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Ministry of Education, Shanghai Ocean University, Shanghai, China; International Research Center for Marine Biosciences, Ministry of Science and Technology, Shanghai Ocean University, Shanghai, China.
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3
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Henrotte O, Kment Š, Naldoni A. Mass Transport Limitations in Plasmonic Photocatalysis. NANO LETTERS 2024; 24:8851-8858. [PMID: 38991547 PMCID: PMC11273613 DOI: 10.1021/acs.nanolett.4c01386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 06/04/2024] [Accepted: 06/05/2024] [Indexed: 07/13/2024]
Abstract
The interpretation of mechanisms governing hot carrier reactivity on metallic nanostructures is critical, yet elusive, for advancing plasmonic photocatalysis. In this work, we explored the influence of the diffusion of molecules on the hot carrier extraction rate at the solid-liquid interface, which is of fundamental interest for increasing the efficiency of photodevices. Through a spatially defined scanning photoelectrochemical microscopy investigation, we identified a diffusion-controlled regime hindering the plasmon-driven photochemical activity of metallic nanostructures. Using low-power monochromatic illumination (<2 W cm-2), we unveiled the hidden influence of mass transport on the quantum efficiency of plasmonic photocatalysts. The availability of molecules at the solid-liquid interface directly limits the extraction of hot holes, according to their nature and energy, at the reactive spots in Au nanoislands on an ultrathin TiO2 substrate. An intriguing question arises: does the mass transport enhancement caused by thermal effects unlock the reactivity of nonthermal carriers under steady state?
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Affiliation(s)
- Olivier Henrotte
- Czech
Advanced Technology and Research Institute, Regional Centre of Advanced
Technologies and Materials Department, Palacký
University Olomouc, Šlechtitelů 27, Olomouc 78371, Czech Republic
| | - Štěpán Kment
- Czech
Advanced Technology and Research Institute, Regional Centre of Advanced
Technologies and Materials Department, Palacký
University Olomouc, Šlechtitelů 27, Olomouc 78371, Czech Republic
- CEET,
Nanotechnology Centre, VŠB-Technical
University of Ostrava, 17. Listopadu 2172/15, Ostrava-Poruba 708 00, Czech Republic
| | - Alberto Naldoni
- Czech
Advanced Technology and Research Institute, Regional Centre of Advanced
Technologies and Materials Department, Palacký
University Olomouc, Šlechtitelů 27, Olomouc 78371, Czech Republic
- Department
of Chemistry and NIS Centre, University
of Turin, Turin 10125, Italy
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4
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Chen L, Jin Y, Guo S, Park E, Xie Y, Jung YM. Ag decoration on Na 2Ti 3O 7 nanowires for improved SERS and PHE performance. NANOSCALE 2023; 15:16287-16298. [PMID: 37721019 DOI: 10.1039/d3nr03994c] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
Na2Ti3O7 (NTO) is recognized as an authenticated promising photocatalyst and surface-enhanced Raman scattering (SERS) active material, although its performance is limited by its high carrier recombination rate, wide band gap and inadequate utilization of visible light. In this study, to solve these issues, sea urchin-shaped NTO nanowires directly grown on a substrate were fabricated, and then Ag nanoparticles were decorated on NTO nanowires using sputtering equipment. The as-prepared Ag-NTO substrates exhibited different morphologies and high SERS activity, which was confirmed by finite-difference time-domain (FDTD) simulations, showing that appropriate Ag decoration can bring more nanogaps and thus enhance the electromagnetic field (EM) contribution. We visualized the charge transfer (CT) mechanism in SERS and further investigated the catalytic hydrogen production process similarly induced by photogenerated CT. The optimal SERS substrate (Ag-NTO-3) was adopted to verify the photocatalytic hydrogen evolution (PHE) activity, and the hydrogen evolution rate of Ag-NTO-3 was 106.7 μmol h-1 (twice that of pristine NTO). Photoelectrochemical measurements and photoluminescence (PL) analysis were used to elucidate the potential enhancement mechanisms for the photocatalytic performance and CT process. This study can provide a valuable reference for performance and mechanism studies of SERS substrates and photocatalysts.
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Affiliation(s)
- Lei Chen
- School of Materials Science and Engineering, Jilin Jianzhu University, Changchun 130118, China
| | - Yang Jin
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China.
| | - Shuang Guo
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chunchon 24341, Korea.
| | - Eungyeong Park
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chunchon 24341, Korea.
| | - Yunfei Xie
- School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu 214122, China.
| | - Young Mee Jung
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chunchon 24341, Korea.
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5
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Lyu P, Espinoza R, Nguyen SC. Photocatalysis of Metallic Nanoparticles: Interband vs Intraband Induced Mechanisms. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:15685-15698. [PMID: 37609384 PMCID: PMC10440817 DOI: 10.1021/acs.jpcc.3c04436] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 07/22/2023] [Indexed: 08/24/2023]
Abstract
Photocatalysis induced by localized surface plasmon resonance of metallic nanoparticles has been studied for more than a decade, but photocatalysis originating from direct interband excitations is still under-explored. The spectral overlap and the coupling of these two optical regimes also complicate the determination of hot carriers' energy states and eventually hinder the accurate assignment of their catalytic role in studied reactions. In this Featured Article, after reviewing previous studies, we suggest classifying the photoexcitation via intra- and interband transitions where the physical states of hot carriers are well-defined. Intraband transitions are featured by creating hot electrons above the Fermi level and suitable for reductive catalytic pathways, whereas interband transitions are featured by generating hot d-band holes below the Fermi level and better for oxidative catalytic pathways. Since the contribution of intra- and interband transitions are different in the spectral regions of localized surface plasmon resonance and direct interband excitations, the wavelength dependence of the photocatalytic activities is very helpful in assigning which transitions and carriers contribute to the observed catalysis.
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Affiliation(s)
- Pin Lyu
- Department
of Chemistry and Biochemistry, University
of California, Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Randy Espinoza
- Department
of Chemistry and Biochemistry, University
of California, Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Son C. Nguyen
- Department
of Chemistry and Biochemistry, University
of California, Merced, 5200 North Lake Road, Merced, California 95343, United States
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6
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Guo ZY, Zhang C, Chen LM, Zeng MH, Yao QH, Ye TX, Luo HZ, Chen XM, Chen X. Design of competition nanoreactor with shell-isolated colloidal plasmonic nanomaterials for quantitative sensor platform. Talanta 2023; 265:124861. [PMID: 37429252 DOI: 10.1016/j.talanta.2023.124861] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 06/05/2023] [Accepted: 06/20/2023] [Indexed: 07/12/2023]
Abstract
Shell-isolated colloid plasmonic nanomaterials-based nanoreactor is a well-established platform widely applied in catalyst or Surface Enhanced Raman Scattering (SERS) sensors. The potentials versatility of nanoreactor platform is mainly implemented by the well-defined and tailorable structure of colloid plasmonic nanomaterials. Currently, a competitive conjugative-mediated nanoreactor is introduced to determine glucose with SERS. Glucose-conjugating nanoreactor, as convertors of the sensors, are constructed by coordinated deposition colloidal gold nanoparticles with sodium nitroprusside framework (Au@SNF) and covalently bonded 4-mercaptopyridine (4-Mpy) with self-assembly strategy. The nanoreactor contained the signal-amplifier Au@SNF NPs, conjugative-mediated signal receiver 4-Mpy, and signal internal standard molecular CN-. In addition to well-defined morphology and functionality, conjugative-mediated and internal standards method are also employed to benefit the nanoreactor. The two-parameter strategy significantly improves the signal indication and correction. Using this proposed platform, the competitive-mediated nanoreactor provides a quantitative SERS detection of glucose, and extends the applicability of SERS in more complicated and reproducibility analysis. Meanwhile, the nanoreactor based sensors also exhibited better properties to detect glucose in various food samples and bio-samples which provided strongly appliance for glucose sensors.
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Affiliation(s)
- Zhi-Yong Guo
- Institute of Analytical Technology and Smart Instruments and Colleague of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, 361024, China; Xiamen Environmental Monitoring Engineering Technology Research Center, China
| | - Chen Zhang
- Institute of Analytical Technology and Smart Instruments and Colleague of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, 361024, China; Xiamen Environmental Monitoring Engineering Technology Research Center, China
| | - Lin-Min Chen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Mei-Huang Zeng
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Qiu-Hong Yao
- Institute of Analytical Technology and Smart Instruments and Colleague of Environment and Public Healthy, Xiamen Huaxia University, Xiamen, 361024, China
| | - Ting-Xiu Ye
- College of Pharmacy, Xiamen Medicine College, Xiamen, 361005, China
| | - He-Zhou Luo
- SEPL Quality Inspection Technology Service Co., Ltd., Fujian, Fuzhou, 350000, China
| | - Xiao-Mei Chen
- College of Ocean Food and Biological Engineering, Jimei University, Xiamen, 361021, China
| | - Xi Chen
- State Key Laboratory of Marine Environmental Science, Xiamen University, Xiamen, 361005, China.
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7
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Al-Zubeidi A, Wang Y, Lin J, Flatebo C, Landes CF, Ren H, Link S. d-Band Holes React at the Tips of Gold Nanorods. J Phys Chem Lett 2023:5297-5304. [PMID: 37267074 DOI: 10.1021/acs.jpclett.3c00997] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Reactive hot spots on plasmonic nanoparticles have attracted attention for photocatalysis as they allow for efficient catalyst design. While sharp tips have been identified as optimal features for field enhancement and hot electron generation, the locations of catalytically promising d-band holes are less clear. Here we exploit d-band hole-enhanced dissolution of gold nanorods as a model reaction to locate reactive hot spots produced from direct interband transitions, while the role of the plasmon is to follow the reaction optically in real time. Using a combination of single-particle electrochemistry and single-particle spectroscopy, we determine that d-band holes increase the rate of gold nanorod electrodissolution at their tips. While nanorods dissolve isotropically in the dark, the same nanoparticles switch to tip-enhanced dissolution upon illimitation with 488 nm light. Electron microscopy confirms that dissolution enhancement is exclusively at the tips of the nanorods, consistent with previous theoretical work that predicts the location of d-band holes. We, therefore, conclude that d-band holes drive reactions selectively at the nanorod tips.
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Affiliation(s)
- Alexander Al-Zubeidi
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX 77005, United States
| | - Yufei Wang
- Department of Chemistry, The University of Texas at Austin, 105 East 24th Street, Austin, TX 78712, United States
| | - Jiamu Lin
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX 77005, United States
| | - Charlotte Flatebo
- Applied Physics Program, Rice University, 6100 Main Street, Houston, TX 77005, United States
| | - Christy F Landes
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX 77005, United States
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, TX 77005, United States
- Department of Chemical and Biomolecular Engineering, Rice University, 6100 Main Street, Houston, TX 77005, United States
| | - Hang Ren
- Department of Chemistry, The University of Texas at Austin, 105 East 24th Street, Austin, TX 78712, United States
| | - Stephan Link
- Department of Chemistry, Rice University, 6100 Main Street, Houston, TX 77005, United States
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, TX 77005, United States
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8
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Yu PY, Chen YS, Yu HH, Chen FI, Chen ZW, Liu CP. The photo-activated oxidase-like activity of gold nanoclusters: Implication for singlet oxygen generation. J Photochem Photobiol A Chem 2022. [DOI: 10.1016/j.jphotochem.2022.114063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Lyu P, Espinoza R, Khan MI, Spaller WC, Ghosh S, Nguyen SC. Mechanistic insight into deep holes from interband transitions in Palladium nanoparticle photocatalysts. iScience 2022; 25:103737. [PMID: 35118357 PMCID: PMC8792079 DOI: 10.1016/j.isci.2022.103737] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/17/2021] [Accepted: 12/30/2021] [Indexed: 11/23/2022] Open
Abstract
Utilizing hot electrons generated from localized surface plasmon resonance is of widespread interest in the photocatalysis of metallic nanoparticles. However, hot holes, especially generated from interband transitions, have not been fully explored for photocatalysis yet. In this study, a photocatalyzed Suzuki-Miyaura reaction using mesoporous Pd nanoparticle photocatalyst served as a model to study the role of hot holes. Quantum yields of the photocatalysts increase under shorter wavelength excitations and correlate to “deeper” energy of the holes from the Fermi level. This work suggests that deeper holes in the d-band catalyze the oxidative addition of aryl halide R-X onto Pd0 at the nanoparticles' surface to form R-PdII-X complex, thus accelerating the rate-determining step of the catalytic cycle. The hot electrons do not play a decisive role. In the future, catalytic mechanisms induced by deep holes should deserve as much attention as the well-known hot electron transfer mechanism. Comparison of quantum yield across different wavelengths Interband transitions from shorter wavelength excitation offering deeper holes Deeper holes with stronger oxidizing power for higher quantum yield
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10
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Lyu P, Nguyen SC. Effect of Photocharging on Catalysis of Metallic Nanoparticles. J Phys Chem Lett 2021; 12:12173-12179. [PMID: 34914381 DOI: 10.1021/acs.jpclett.1c03671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The photocharging effect is widely known across different research fields, has rarely been quantified as a background contribution in photocatalysis, and has often been overlooked in mechanistic interpretation of nanoparticle photocatalysts. To address these issues, this work presents a two-step experiment: charging colloidal Pd nanoparticles with light and hole scavengers and using the charged particles to catalyze the reduction of 4-nitrophenol by NaBH4 under non-irradiation conditions. Experimental kinetics demonstrated a proportional correlation between accumulated electrons and catalytic improvement of Pd nanoparticles. This work reminds us that photocharged nanoparticles may still catalyze chemical reactions as a background phenomenon even when they are not undergoing photoexcitation.
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Affiliation(s)
- Pin Lyu
- Department of Chemistry and Biochemistry, University of California, Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Son C Nguyen
- Department of Chemistry and Biochemistry, University of California, Merced, 5200 North Lake Road, Merced, California 95343, United States
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11
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Garcia A, Wang K, Bedier F, Benavides M, Wan Z, Wang S, Wang Y. Plasmonic Imaging of Electrochemical Reactions at Individual Prussian Blue Nanoparticles. Front Chem 2021; 9:718666. [PMID: 34552911 PMCID: PMC8450507 DOI: 10.3389/fchem.2021.718666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 08/23/2021] [Indexed: 11/25/2022] Open
Abstract
Prussian blue is an iron-cyanide-based pigment steadily becoming a widely used electrochemical sensor in detecting hydrogen peroxide at low concentration levels. Prussian blue nanoparticles (PBNPs) have been extensively studied using traditional ensemble methods, which only provide averaged information. Investigating PBNPs at a single entity level is paramount for correlating the electrochemical activities to particle structures and will shed light on the major factors governing the catalyst activity of these nanoparticles. Here we report on using plasmonic electrochemical microscopy (PEM) to study the electrochemistry of PBNPs at the individual nanoparticle level. First, two types of PBNPs were synthesized; type I synthesized with double precursors method and type II synthesized with polyvinylpyrrolidone (PVP) assisted single precursor method. Second, both PBNPs types were compared on their electrochemical reduction to form Prussian white, and the effect from the different particle structures was investigated. Type I PBNPs provided better PEM sensitivity and were used to study the catalytic reduction of hydrogen peroxide. Progressively decreasing plasmonic signals with respect to increasing hydrogen peroxide concentration were observed, demonstrating the capability of sensing hydrogen peroxide at a single nanoparticle level utilizing this optical imaging technique.
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Affiliation(s)
- Adaly Garcia
- Department of Chemistry and Biochemistry, California State University, Los Angeles, Los Angeles, CA, United States
| | - Kinsley Wang
- Department of Chemistry and Biochemistry, California State University, Los Angeles, Los Angeles, CA, United States
| | - Fatima Bedier
- Department of Chemistry and Biochemistry, California State University, Los Angeles, Los Angeles, CA, United States
| | - Miriam Benavides
- Department of Chemistry and Biochemistry, California State University, Los Angeles, Los Angeles, CA, United States
| | - Zijian Wan
- Biodesign Center for Biosensors and Bioelectronics, Arizona State University, Tempe, AZ, United States.,School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, AZ, United States
| | - Shaopeng Wang
- Biodesign Center for Biosensors and Bioelectronics, Arizona State University, Tempe, AZ, United States.,School of Biological and Health Systems Engineering, Arizona State University, Tempe, AZ, United States
| | - Yixian Wang
- Department of Chemistry and Biochemistry, California State University, Los Angeles, Los Angeles, CA, United States
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12
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Guo Y, Thérien-Aubin H. Nanofibrous Photocatalytic Membranes Based on Tailored Anisotropic Gold/Ceria Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2021; 13:37578-37588. [PMID: 34328306 PMCID: PMC8365598 DOI: 10.1021/acsami.1c11954] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 07/20/2021] [Indexed: 06/13/2023]
Abstract
The combination of plasmonic nanoparticles with semiconductor photocatalysts is a good strategy for synthesizing highly efficient photocatalysts. Such binary nanoparticles have demonstrated enhanced catalytic activity in comparison to either plasmonic catalysts or semiconductor catalysts. However, problematic recovery and limited long-term colloidal stability of those nanoparticles in suspension limit their wide use in catalysis. To palliate to such limitations, we embedded binary nanoparticles in polymer fibers to design photocatalytic membranes. First, we used the selective over-growth of crystalline cerium oxide on the gold nanoparticle template with distinct shapes. Gold nanospheres, gold nanorods, and gold nanotriangles were used as the template for the growth of the cerium oxide domains. Then, the resulting nanoparticles were used to catalyze model reactions in suspensions. The gold nanoparticles covered with patches of cerium oxide outperformed the fully covered and naked nanoparticles in terms of catalytic efficiency. Finally, the most efficient binary nanostructures were successfully embedded in nanofibrous membranes by colloidal electrospinning and used in water remediation experiments in a flow-through reactor.
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Affiliation(s)
- Yinzhou Guo
- Max
Planck Institute for Polymer Research, Mainz 55128, Germany
| | - Héloïse Thérien-Aubin
- Max
Planck Institute for Polymer Research, Mainz 55128, Germany
- Department
of Chemistry, Memorial University of Newfoundland, St. John’s, Newfoundland
and Labrador A1B 3X7, Canada
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13
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Liu JL, Zhang BB, Jia AQ, Xin ZF, Zhang QF. Functionalized resorcinarene as organic template for preparation of gold nanoparticles. J INCL PHENOM MACRO 2020. [DOI: 10.1007/s10847-020-01030-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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14
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Abstract
TiO2 probably plays the most important role in photocatalysis due to its excellent chemical and physical properties. However, the band gap of TiO2 corresponds to the Ultraviolet (UV) region, which is inactive under visible irradiation. At present, TiO2 has become activated in the visible light region by metal and nonmetal doping and the fabrication of composites. Recently, nano-TiO2 has attracted much attention due to its characteristics of larger specific surface area and more exposed surface active sites. nano-TiO2 has been obtained in many morphologies such as ultrathin nanosheets, nanotubes, and hollow nanospheres. This work focuses on the application of nano-TiO2 in efficient environmental photocatalysis such as hydrogen production, dye degradation, CO2 degradation, and nitrogen fixation, and discusses the methods to improve the activity of nano-TiO2 in the future.
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15
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Mao Z, Espinoza R, Garcia A, Enwright A, Vang H, Nguyen SC. Tuning Redox Potential of Gold Nanoparticle Photocatalysts by Light. ACS NANO 2020; 14:7038-7045. [PMID: 32441918 DOI: 10.1021/acsnano.0c01704] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Metallic nanoparticle-based photocatalysts have gained a lot of interest in catalyzing oxidation-reduction reactions. In previous studies, the poor performance of these catalysts is partly due to their operation that relies on picosecond-lifetime hot carriers. In this work, electrons that accumulate at a photostationary state, generated by photocharging the catalysts, have a much longer lifetime for catalysis. This approach makes it possible to determine and tune the photoredox potentials of the catalysts. As demonstrated in a model reaction, the photostationary state of the photocatalyzed oxidative etching of colloidal gold nanoparticles using FeCl3 was established under continuous irradiation of different wavelengths. The photoredox potentials of the nanoparticles were then calculated using the Nernst equation. The potentials can be tuned to a range of 1.28 to 1.40 V (vs SHE) under irradiation of different wavelengths in the range of 450 to 517 nm. The effects of particle size or optical power on the photoredox potentials are small compared to the wavelength effect. Control over the photoredox potential of the particles using different excitation wavelengths can potentially be used to tune the activities and selectivities of metallic nanoparticle photocatalysts.
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Affiliation(s)
- Ziliang Mao
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Randy Espinoza
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Anthony Garcia
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Adrian Enwright
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Hnubci Vang
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
| | - Son C Nguyen
- Department of Chemistry and Chemical Biology, University of California Merced, 5200 North Lake Road, Merced, California 95343, United States
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16
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Lu W, Ju F, Yao K, Wei X. Photoelectrocatalytic Reduction of CO2 for Efficient Methanol Production: Au Nanoparticles as Electrocatalysts and Light Supports. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b06600] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Weiwei Lu
- School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang, Henan 471003, P. R. China
| | - Fengyang Ju
- School of Food and Drug, Luoyang Normal University, Luoyang, Henan 471934, P. R. China
| | - Kaisheng Yao
- School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang, Henan 471003, P. R. China
| | - Xuefeng Wei
- School of Chemical Engineering and Pharmaceutics, Henan University of Science and Technology, Luoyang, Henan 471003, P. R. China
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17
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Rodio M, Graf M, Schulz F, Mueller NS, Eich M, Lange H. Experimental Evidence for Nonthermal Contributions to Plasmon-Enhanced Electrochemical Oxidation Reactions. ACS Catal 2020. [DOI: 10.1021/acscatal.9b05401] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Marina Rodio
- Hamburg Centre for Advanced Imaging of Matter, Luruper Chaussee 149, Hamburg 22761, Germany
- Institute of Physical Chemistry, University of Hamburg, Martin-Luther-King Platz 6, Hamburg 20146, Germany
| | - Matthias Graf
- Institute of Materials Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Strasse 1, Geesthacht D-21502, Germany
- Institute of Optical and Electronic Materials, Hamburg University of Technology, Eissendorfer Strasse 38, Hamburg D-21073, Germany
| | - Florian Schulz
- Institute of Physical Chemistry, University of Hamburg, Martin-Luther-King Platz 6, Hamburg 20146, Germany
| | - Niclas S. Mueller
- Department of Physics, Freie Universitat Berlin, Arnimallee 14, Berlin D-14195, Germany
| | - Manfred Eich
- Institute of Materials Research, Helmholtz-Zentrum Geesthacht, Max-Planck-Strasse 1, Geesthacht D-21502, Germany
- Institute of Optical and Electronic Materials, Hamburg University of Technology, Eissendorfer Strasse 38, Hamburg D-21073, Germany
| | - Holger Lange
- Hamburg Centre for Advanced Imaging of Matter, Luruper Chaussee 149, Hamburg 22761, Germany
- Institute of Physical Chemistry, University of Hamburg, Martin-Luther-King Platz 6, Hamburg 20146, Germany
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