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Yang LT, Wang WJ, Huang WT, Wang LC, Hsu MC, Kan CD, Huang CY, Wong TW, Li WP. Photo-Responsive Ascorbic Acid-Modified Ag 2S-ZnS Heteronanostructure Dropping pH to Trigger Synergistic Antibacterial and Bohr Effects for Accelerating Infected Wound Healing. ACS APPLIED MATERIALS & INTERFACES 2024; 16:12018-12032. [PMID: 38394675 PMCID: PMC10921379 DOI: 10.1021/acsami.3c17424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 02/05/2024] [Accepted: 02/08/2024] [Indexed: 02/25/2024]
Abstract
Nonantibiotic approaches must be developed to kill pathogenic bacteria and ensure that clinicians have a means to treat wounds that are infected by multidrug-resistant bacteria. This study prepared matchstick-like Ag2S-ZnS heteronanostructures (HNSs). Their hydrophobic surfactants were then replaced with hydrophilic poly(ethylene glycol) (PEG) and thioglycolic acid (TGA) through the ligand exchange method, and this was followed by ascorbic acid (AA) conjugation with TGA through esterification, yielding well-dispersed PEGylated Ag2S-ZnS@TGA-AA HNSs. The ZnS component of the HNSs has innate semiconductivity, enabling the generation of electron-hole pairs upon irradiation with a light of wavelength 320 nm. These separate charges can react with oxygen and water around the HNSs to produce reactive oxygen species. Moreover, some holes can oxidize the surface-grafted AA to produce protons, decreasing the local pH and resulting in the corrosion of Ag2S, which releases silver ions. In evaluation tests, the PEGylated Ag2S-ZnS@TGA-AA had synergistic antibacterial ability and inhibited Gram-negative Escherichia coli and Gram-positive methicillin-resistant Staphylococcus aureus (MRSA). Additionally, MRSA-infected wounds treated with a single dose of PEGylated Ag2S-ZnS@TGA-AA HNSs under light exposure healed significantly more quickly than those not treated, a result attributable to the HNSs' excellent antibacterial and Bohr effects.
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Affiliation(s)
- Li-Ting Yang
- Department
of Medicinal and Applied Chemistry, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
| | - Wen-Jyun Wang
- Department
of Medicinal and Applied Chemistry, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
| | - Wan-Ting Huang
- Department
of Dermatology, National Cheng Kung University Hospital, College of
Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Liu-Chun Wang
- Department
of Chemistry, National Cheng Kung University, Tainan 701, Taiwan
| | - Ming-Chien Hsu
- Department
of Medicinal and Applied Chemistry, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
| | - Chung-Dann Kan
- Division
of Cardiovascular Surgery, Department of Surgery, National Cheng Kung
University Hospital, College of Medicine, National Cheng Kung University, Tainan 704, Taiwan
| | - Chun-Yung Huang
- Department
of Seafood Science, National Kaohsiung University
of Science and Technology, Kaohsiung 807, Taiwan
| | - Tak-Wah Wong
- Department
of Dermatology, National Cheng Kung University Hospital, College of
Medicine, National Cheng Kung University, Tainan 704, Taiwan
- Department
of Biochemistry & Molecular Biology, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan
- Center
of Applied Nanomedicine, National Cheng
Kung University, Tainan 701, Taiwan
| | - Wei-Peng Li
- Department
of Medicinal and Applied Chemistry, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
- Center
of Applied Nanomedicine, National Cheng
Kung University, Tainan 701, Taiwan
- Department
of Medical Research, Kaohsiung Medical University
Hospital, Kaohsiung 807, Taiwan
- Drug
Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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Cai J, Liu P, Lei J, Zhang Y, Xiang Y, Wang X, Wu Q, Hu Z. Solution-Processed 1D Wurtzite ZnS Nanostructures with Controlled Crystallographic Orientation and Tunable Band-Edge Emission. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2303560. [PMID: 37726249 DOI: 10.1002/smll.202303560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 09/04/2023] [Indexed: 09/21/2023]
Abstract
1D compound semiconductor nanomaterials possess unique physicochemical properties that strongly depend on their size, composition, and structures. ZnS has been widely investigated as one of the most important semiconductors, and the control of crystallographic orientation of 1D ZnS nanostructures is still challenging and crucial to exploring their anisotropic properties. Herein, a solution-processed strategy is developed to synthesize 1D wurtzite (w-)ZnS nanostructures with the specific <002> and <210> orientations by co-decomposing the copper dibutyldithiocarbamate {[(C4 H9 )2 NCS2 ]2 Cu, i.e., R2 Cu} and zinc dibutyldithiocarbamate (R2 Zn) precursors in the mixed solvents of oleylamine and 1-dodecanethoil. A solution-solid-solid (SSS)-Oriented growth mechanism is proposed, which includes oriented nucleation dominated and SSS growth dominated stages. The crystallographic orientation mainly depends on the interfacial energy and ligand effect. The 1D w-ZnS nanostructures with controlled crystallographic orientation display unique morphologies, i.e., <002>-oriented w-ZnS nanorod enclosed with {110} facets while <210>-oriented w-ZnS nanobelt enclosed with wide (002) and narrow (110) facets. The bandgap of 1D w-ZnS nanostructures can be tuned from 3.94 to 3.82 eV with the crystallographic growth direction varied from <002> to <210>, thus leading to the tunable band-edge emission from ≈338 to ≈345 nm.
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Affiliation(s)
- Jing Cai
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Peifeng Liu
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Junyu Lei
- School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Yongliang Zhang
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Yu Xiang
- Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering, School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Xizhang Wang
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Qiang Wu
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Zheng Hu
- Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
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Yang SJ, Lin YK, Pu YC, Hsu YJ. Crystal Facet Dependent Energy Band Structures of Polyhedral Cu 2O Nanocrystals and Their Application in Solar Fuel Production. J Phys Chem Lett 2022; 13:6298-6305. [PMID: 35786932 DOI: 10.1021/acs.jpclett.2c01632] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
We demonstrated a facile hydrothermal method to synthesize the (100)-, (110)- and (111)-oriented Cu2O nanocrystals (NCs) by controlling the concentration of the incorporated anions (CO32- and SO32-). The crystal facet dependent activity of the orientation controlled Cu2O NCs in the rhodamine B (RhB) photodegradation and photocatalytic hydrogen (H2) evolution was found to follow the trend: (111) > (110) > (100). The mechanism was investigated by characterizing the optical property, energy band structure, interfacial charge carrier dynamics and reducing ability. The results indicated that the (111)-oriented Cu2O NCs exhibit the higher conduction band (CB) potential as compared with the (110)-oriented and (100)-oriented Cu2O NCs, which resulted in the largest driving force of interfacial electron transfer for (111)-oriented Cu2O NCs to carry out solar fuel generation. The current study offers an easy strategy for crystal facet engineering of semiconductors and provides important physical insights into their electronic properties for the desired solar energy conversions.
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Affiliation(s)
- Shan-Jen Yang
- Department of Materials Science, National University of Tainan, Tainan 70005, Taiwan
| | - Yin-Kai Lin
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan 30010, Taiwan
| | - Ying-Chih Pu
- Department of Materials Science, National University of Tainan, Tainan 70005, Taiwan
| | - Yung-Jung Hsu
- Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan 30010, Taiwan
- Center for Emergent Functional Matter Science, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan
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Sen S, Shyamal S, Mehetor SK, Sahu P, Pradhan N. Au-Cu 2-xTe Plasmonic Heteronanostructure Photoelectrocatalysts. J Phys Chem Lett 2021; 12:11585-11590. [PMID: 34808046 DOI: 10.1021/acs.jpclett.1c03222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Semiconductor nanocrystals coupled with plasmonic Au nanoparticles have been widely studied as photoelectrocatalysts for solar water splitting. Among these, heterostructures of copper chalcogenides with Au remained a unique category for their dual plasmon character. However, while sulfides and selenides of copper have been extensively reported, heterostructures of copper tellurides with Au have not been explored. Herein, the plasmonic semiconductor Cu2-xTe disks grown on Au nanoparticles (disk-on-dot) were explored as efficient photoelectrocatalysts for hydrogen evolution reactions (HER). This has been successfully designed by growing Cu2-xTe disks on presynthesized Au nanoparticles under optimized reaction conditions. The resulting heterostructured nanocrystals acted as efficient photoelectrocatalysts for the H2 evolution reaction with a low Tafel slope and less cathodic overpotential in the presence of light. Details of their synthesis, characterization, optical properties, and electrocatalytic activities are studied and reported in this letter.
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Affiliation(s)
- Suvodeep Sen
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata, West Bengal 700032, India
| | - Sanjib Shyamal
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata, West Bengal 700032, India
| | - Shyamal Kumar Mehetor
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata, West Bengal 700032, India
| | - Puspanjali Sahu
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata, West Bengal 700032, India
| | - Narayan Pradhan
- School of Materials Sciences, Indian Association for the Cultivation of Science, Kolkata, West Bengal 700032, India
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Chang AM, Chen YH, Lai CC, Pu YC. Synergistic Effects of Surface Passivation and Charge Separation to Improve Photo-electrochemical Performance of BiOI Nanoflakes by Au Nanoparticle Decoration. ACS APPLIED MATERIALS & INTERFACES 2021; 13:5721-5730. [PMID: 33464818 DOI: 10.1021/acsami.0c18430] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
We demonstrate that the photoactivity of bismuth oxyiodide (BiOI) nanoflake (NF) photocathodes in photo-electrochemical (PEC) water splitting can be significantly enhanced by about 24-fold by thermal calcination under an air atmosphere and then surficial decoration of Au nanoparticles (NPs). To understand the key factors affecting the PEC efficiency in Au NP-decorated BiOI NF photoelectrodes, incident photon-to-current conversion efficiency, electrochemical impedance spectroscopy, photovoltage, and electrochemically active surface area measurements were performed. The analytic results presented that thermal calcining could produce mesopores, increasing active sites on the surface of BiOI NFs. In addition, the synergistic effects of surface-state passivation and charge separation were observed for the surficial Au NP decoration on BiOI NFs. Transient absorption spectroscopy coupled with PEC measurements confirmed that the lifetime of photogenerated electrons on the conduction band of BiOI NFs can be prolonged by Au NP decoration, resulting in higher probability to carry out water reduction. The current investigation presents important insights into the mechanism of charge carrier dynamics in metal-semiconductor nano-heterostructures, which is contributive to develop photoelectrode materials in solar fuel production.
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Affiliation(s)
- An-Mi Chang
- Department of Materials Science, National University of Tainan, Tainan 70005, Taiwan
| | - Yu-Hung Chen
- Department of Medicine, College of Medicine, National Cheng Kung University, Tainan 70101, Taiwan
| | - Chien-Chih Lai
- Department of Materials Science, National University of Tainan, Tainan 70005, Taiwan
| | - Ying-Chih Pu
- Department of Materials Science, National University of Tainan, Tainan 70005, Taiwan
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