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Wang W, Cao Q, He J, Xie Y, Zhang Y, Yang L, Duan MH, Wang J, Li W. Palladium/Platinum/Ruthenium Trimetallic Dendritic Nanozymes Exhibiting Enhanced Peroxidase-like Activity for Signal Amplification of Lateral Flow Immunoassays. NANO LETTERS 2024; 24:8311-8319. [PMID: 38935481 DOI: 10.1021/acs.nanolett.4c01568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/29/2024]
Abstract
Developing ultrasensitive lateral flow immunoassays (LFIAs) has garnered significant attention in the field of point-of-care testing. In this study, a trimetallic dendritic nanozyme (Pd@Pt-Ru) was synthesized through Ru deposition on a Pd@Pt core and utilized to enhancing the sensitivity of LFIAs. Pd@Pt-Ru exhibited a Km value of 5.23 mM for detecting H2O2, which indicates an H2O2 affinity comparable with that of horseradish peroxidase. The Ru surface layer reduces the activation energy barrier, which increases the maximum reaction rate. As a proof of concept, the proposed Pd@Pt-Ru nanozyme was incorporated into LFIAs (A-Pd@Pt-Ru-LFIAs) for detecting human chorionic gonadotropin (hCG). Compared with conventional gold nanoparticle (AuNP)-LFIAs, A-Pd@Pt-Ru-LFIAs demonstrated 250-fold increased sensitivity, thereby enabling a visible detection limit as low as 0.1 IU/L. True positive and negative rates both reached 100%, which renders the proposed Pd@Pt-Ru nanozyme suitable for detecting hCG in clinical samples.
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Affiliation(s)
- Weiguo Wang
- Hengyang Medical School, Institute of Pharmacy and Pharmacology, The Affiliated Nanhua Hospital, Department of Hepatobiliary Surgery, University of South China, Hengyang 421000, Hunan, China
| | - Qianqian Cao
- Hengyang Medical School, Institute of Pharmacy and Pharmacology, The Affiliated Nanhua Hospital, Department of Hepatobiliary Surgery, University of South China, Hengyang 421000, Hunan, China
| | - Jian He
- Hengyang Medical School, Institute of Pharmacy and Pharmacology, The Affiliated Nanhua Hospital, Department of Hepatobiliary Surgery, University of South China, Hengyang 421000, Hunan, China
| | - Yafeng Xie
- Department of Clinical Laboratory, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang 421000, Hunan, China
| | - Ying Zhang
- School of Biomedical and Chemical Engineering, Liaoning Institute of Science and Technology, Benxi 117004, China
| | - Lin Yang
- Hengyang Medical School, Institute of Pharmacy and Pharmacology, The Affiliated Nanhua Hospital, Department of Hepatobiliary Surgery, University of South China, Hengyang 421000, Hunan, China
| | - Ming-Hui Duan
- Institute of Pathogenic Biology, Hengyang Medical School, University of South China, Hengyang 421000, Hunan, China
| | - Jikai Wang
- Hengyang Medical School, Institute of Pharmacy and Pharmacology, The Affiliated Nanhua Hospital, Department of Hepatobiliary Surgery, University of South China, Hengyang 421000, Hunan, China
| | - Wei Li
- Hengyang Medical School, Institute of Pharmacy and Pharmacology, The Affiliated Nanhua Hospital, Department of Hepatobiliary Surgery, University of South China, Hengyang 421000, Hunan, China
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Ni Q, Zhu Z, Wang Y, Jiang C, Wang M, Zhang X. A pillar-layered Ni 2P-Ni 5P 4-CoP array derived from a metal-organic framework as a bifunctional catalyst for efficient overall water splitting. Dalton Trans 2024; 53:8732-8739. [PMID: 38712507 DOI: 10.1039/d4dt00839a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Interfacial engineering emerges as a potent strategy for regulating the catalytic reactivity of metal phosphides. Developing a facile and cost-effective method to construct bifunctional metal phosphides for highly efficient electrochemical overall water splitting remains an essential and challenging issue. Here, a multiphase transition metal phosphide is constructed through the direct phosphorization of a Ni-Co metal-organic framework grown on nickel foam (Ni-Co-MOF/NF), which is prepared by utilizing nickel foam as conductive substrate and nickel source. The resulting transition metal phosphide manifests a pillar-layered morphology, wherein CoP, Ni2P, and Ni5P4 nanoparticles are embedded within each carbon sheet and these carbon sheets assemble into a pillar-shaped structure on the nickel foam (Ni2P-Ni5P4-CoP-C/NF). The heterogeneous Ni2P-Ni5P4-CoP-C/NF with multiple interfaces serves as a highly efficient bifunctional electrocatalyst with overpotentials of -100 mV and 293 mV in the hydrogen evolution reaction and oxygen evolution reaction, respectively, at 50 mA cm-2 in alkaline media. This superior catalytic performance should mainly be ascribed to its enriched active centers and multiphase synergy. When directly applied for alkaline overall water splitting, the Ni2P-Ni5P4-CoP-C/NF couple demonstrates satisfactory activity (1.55 V @10 mA cm-2) along with sustained durability over 18 hours. This method brings fresh enlightenment to the economical and controllable preparation of multi-metal phosphides for energy conversion.
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Affiliation(s)
- Qihang Ni
- Shandong Province Key Laboratory of Detection Technology for Tumor Makers, School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, Shandong, P. R. China.
| | - Zixian Zhu
- Shandong Province Key Laboratory of Detection Technology for Tumor Makers, School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, Shandong, P. R. China.
| | - Yan Wang
- Shandong Province Key Laboratory of Detection Technology for Tumor Makers, School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, Shandong, P. R. China.
| | - Chengyu Jiang
- Shandong Province Key Laboratory of Detection Technology for Tumor Makers, School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, Shandong, P. R. China.
| | - Min Wang
- Shandong Province Key Laboratory of Detection Technology for Tumor Makers, School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, Shandong, P. R. China.
| | - Xiang Zhang
- Shandong Province Key Laboratory of Detection Technology for Tumor Makers, School of Chemistry and Chemical Engineering, Linyi University, Linyi 276000, Shandong, P. R. China.
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Zhang W, Dai L. Mesoporous Metal Nanomaterials: Developments and Electrocatalytic Applications. Chemistry 2024; 30:e202400402. [PMID: 38362815 DOI: 10.1002/chem.202400402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 02/15/2024] [Accepted: 02/16/2024] [Indexed: 02/17/2024]
Abstract
Mesoporous metal nanomaterials (MPMNs) are pivotal in nanotechnology, especially in electrochemical applications, due to their unique structure. Unlike traditional nanomaterials, MPMNs possess hierarchical and mesoporous characteristics, providing more active sites for improved mass and electron transfer. This distinctive composition offers dual benefits, enhancing activity, stability, and selectivity for specific reactions. The intricate architecture, featuring interconnected pores, amplifies surface area, ensuring efficient use of active sites and boosting reactivity in electrocatalytic processes. Additionally, the mesoporous nature promotes superior diffusion kinetics, facilitating better transport of reactants and products. This intricate interplay of structural elements contributes not only to the increased efficiency of electrochemical reactions but also to the extended durability of MPMNs during prolonged usage. This concept focus on the synthesis and design strategies of MPMNs, aligning with the dynamic requirements of diverse electrocatalytic applications. The synergy resulting from these advancements not only accentuates the intrinsic properties of MPMNs but also broadens their scope for practical implementation in emerging fields of electrochemistry.
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Affiliation(s)
- Wuyong Zhang
- Key Laboratory of Advanced Fuel Cells and Electrolyzers Technology of Zhejiang Province, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, 315201, Ningbo, Zhejiang, China
| | - Lei Dai
- Key Laboratory for Special Functional Materials of Ministry of Education, School of Materials Science and Engineering, Academy for Advanced Interdisciplinary Studies, Henan University, 475004, Kaifeng, Henan, China
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Yang X, Yuan Q, Sheng T, Wang X. Mesoporous Mo-doped PtBi intermetallic metallene superstructures to enable the complete electrooxidation of ethylene glycol. Chem Sci 2024; 15:4349-4357. [PMID: 38516075 PMCID: PMC10952108 DOI: 10.1039/d4sc00323c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2024] [Accepted: 02/12/2024] [Indexed: 03/23/2024] Open
Abstract
Metallenes, intermetallic compounds, and porous nanocrystals are the three types of most promising advanced nanomaterials for practical fuel cell devices, but how to integrate the three structural features into a single nanocrystal remains a huge challenge. Herein, we report an efficient one-step method to construct freestanding mesoporous Mo-doped PtBi intermetallic metallene superstructures (denoted M-PtBiMo IMSs) as highly active and stable ethylene glycol oxidation reaction (EGOR) catalysts. The materials retained their catalytic performance, even in complex direct ethylene glycol fuel cells (DEGFCs). The M-PtBiMo IMSs showed EGOR mass and specific activities of 24.0 A mgPt-1 and 61.1 mA cm-2, respectively, which were both dramatically higher than those of benchmark Pt black and Pt/C. In situ infrared spectra showed that ethylene glycol underwent complete oxidation via a 10-electron CO-free pathway over the M-PtBiMo IMSs. Impressively, M-PtBiMo IMSs demonstrated a much higher power density (173.6 mW cm-2) and stability than Pt/C in DEGFCs. Density functional theory calculations revealed that oxophilic Mo species promoted the EGOR kinetics. This work provides new possibilities for designing advanced Pt-based nanomaterials to improve DEGFC performance.
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Affiliation(s)
- Xiaotong Yang
- State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, College of Chemistry and Chemical Engineering, Guizhou University Guiyang Guizhou province 550025 P. R. China
| | - Qiang Yuan
- State-Local Joint Laboratory for Comprehensive Utilization of Biomass, Center for R&D of Fine Chemicals, College of Chemistry and Chemical Engineering, Guizhou University Guiyang Guizhou province 550025 P. R. China
| | - Tian Sheng
- College of Chemistry and Materials Science, Anhui Normal University Wuhu 241000 P. R. China
| | - Xun Wang
- Key Lab of Organic Optoelectronics & Molecular Engineering, Tsinghua University Beijing 100084 P. R. China
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