1
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Bashir MS, Ramzan N, Najam T, Abbas G, Gu X, Arif M, Qasim M, Bashir H, Shah SSA, Sillanpää M. Metallic nanoparticles for catalytic reduction of toxic hexavalent chromium from aqueous medium: A state-of-the-art review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 829:154475. [PMID: 35278543 DOI: 10.1016/j.scitotenv.2022.154475] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 03/03/2022] [Accepted: 03/07/2022] [Indexed: 06/14/2023]
Abstract
The ever increasing concentration of toxic and carcinogenic hexavalent chromium (Cr (VI)) in various environmental mediums including water-bodies due to anthropogenic activities with rapid civilization and industrialization have become the major issue throughout the globe during last few decades. Therefore, developing new strategies for the treatment of Cr(VI) contaminated wastewaters are in great demand and have become a topical issue in academia and industry. To date, various techniques have been used for the remediation of Cr(VI) contaminated wastewaters including solvent extraction, adsorption, catalytic reduction, membrane filtration, biological treatment, coagulation, ion exchange and photo-catalytic reduction. Among these methods, the transformation of highly toxic Cr(VI) to benign Cr(III) catalyzed by metallic nanoparticles (M-NPs) with reductant has gained increasing attention in the past few years, and is considered to be an effective approach due to the superior catalytic performance of M-NPs. Thus, it is a timely topic to review this emerging technique for Cr(VI) reduction. Herein, recent development in synthesis of M-NPs based non-supported, supported, mono-, bi- and ternary M-NPs catalysts, their characterization and performance for the reduction of Cr(VI) to Cr(III) are reviewed. The role of supporting host to stabilize the M-NPs and leading to enhance the reduction of Cr(VI) are discussed. The Cr(VI) reduction mechanism, kinetics, and factors affecting the kinetics are overviewed to collect the wealthy kinetics data. Finally, the challenges and perspective in Cr(VI) reduction catalyzed by M-NPs are proposed. We believe that this review will assist the researchers who are working to develop novel M-NPs catalysts for the reduction of Cr(VI).
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Affiliation(s)
- Muhammad Sohail Bashir
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Naveed Ramzan
- Department of Chemical Engineering, University of Engineering and Technology, Lahore 54890, Pakistan
| | - Tayyaba Najam
- Institute for Advanced Study and Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
| | - Ghulam Abbas
- Department of Chemical Engineering, University of Gujrat, Gujrat 50700, Pakistan
| | - Xiangling Gu
- Shandong Provincial Engineering Laboratory of Novel Pharmaceutical Excipients, Sustained and Controlled Release Preparations, College of Medicine and Nursing, Dezhou University, Dezhou 253023, China
| | - Muhammad Arif
- Department of Chemical Engineering, University of Engineering & Information Technology Abu Dhabi Road, Rahim Yar Khan, 64200 Pakistan
| | - Muhammad Qasim
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Humaira Bashir
- Department of Botany, University of the Punjab, Quaid-e-Azam Campus, 54590 Lahore, Pakistan
| | - Syed Shoaib Ahmad Shah
- Hefei National Laboratory for Physical Sciences at the Microscale, CAS Key Laboratory of Soft Matter Chemistry, Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China.
| | - Mika Sillanpää
- Department of Chemical Engineering, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, P. O. Box 17011, Doornfontein 2028, South Africa; Department of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia; International Research Centre of Nanotechnology for Himalayan Sustainability (IRCNHS), Shoolini University, Solan 173212, Himachal Pradesh, India; Zhejiang Rongsheng Environmental Protection Paper Co. LTD, NO.588 East Zhennan Road, Pinghu Economic Development Zone, Zhejiang 314213, China.
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2
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Prabakaran E, Pillay K. Self-Assembled Silver Nanoparticles Decorated on Exfoliated Graphitic Carbon Nitride/Carbon Sphere Nanocomposites as a Novel Catalyst for Catalytic Reduction of Cr(VI) to Cr(III) from Wastewater and Reuse for Photocatalytic Applications. ACS OMEGA 2021; 6:35221-35243. [PMID: 34984255 PMCID: PMC8717378 DOI: 10.1021/acsomega.1c00866] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Accepted: 04/16/2021] [Indexed: 06/14/2023]
Abstract
Silver nanoparticles decorated on an exfoliated graphitic carbon nitride/carbon sphere (AgNP/Eg-C3N4/CS) nanocomposites were synthesized by an adsorption method with a self-assembled process. These nanoparticles were characterized by different techniques like UV-visible (UV-vis) spectroscopy, photoluminescence (PL) spectroscopy, Fourier transform infrared (FT-IR) spectroscopy, X-ray diffraction (XRD), thermal gravimetric analysis (TGA), Raman spectroscopy, scanning electron spectroscopy (SEM), transmission electron spectroscopy (TEM), electrochemical impedance spectroscopy (EIS), and ζ potential. AgNP/Eg-C3N4/CS nanocomposites showed a higher catalytic reduction activity for the conversion of Cr(VI) into Cr(III) with formic acid (FA) at 45 °C when compared to bulk graphitic carbon nitride (Bg-C3N4, Eg-C3N4, CS, and Eg-C3N4/CS). The kinetic rate constants were determined as a function of catalyst dosage, concentration of Cr(VI), pH, and temperature for the AgNP/Eg-C3N4/CS nanocomposite. This material showed higher reduction efficiency (98.5%, k = 0.0621 min-1) with turnover frequency (0.0158 min-1) for the reduction of Cr(VI) to Cr(III). It also showed great selectivity and high stability after six repeated cycles (98.5%). Further, the reusability of the Cr(III)-AgNP/Eg-C3N4/CS nanocomposite was also investigated for the photocatalytic degradation of methylene blue (MB) under visible light irradiation with various time intervals and it showed good degradation efficiency (α = 97.95%). From these results, the AgNP/Eg-C3N4/CS nanocomposite demonstrated higher catalytic activity, improved environmental friendliness, lower cost for the conversion of toxic Cr(VI) to Cr(III) in solutions, and also good reusability.
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3
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Lei H, Zhang Q. In situ electrochemical redox tuning of Pd-Co hybrid electrocatalysts for high-performance methanol oxidation: Strong metal-support interaction. J Colloid Interface Sci 2020; 588:476-484. [PMID: 33429344 DOI: 10.1016/j.jcis.2020.12.091] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/06/2020] [Accepted: 12/23/2020] [Indexed: 10/22/2022]
Abstract
Construction of strong metal-support interaction (SMSI) is of fundamental interest in the preparation of supported metal nanoparticle catalysts with enhanced catalytic activity. Herein, we report a facile in situ electrochemical redox tuning approach to build strong interactions between metals and supports. As for a typical example, a composite electrocatalyst of Pd-Co hybrid nanoparticles directly developed on Ni substrate is found to follow a distinct surface self-reconstruction process in alkaline media via an in situ electrochemical redox procedure, which results in structural transition from the original nanoparticles (NPs) to nanosheets (NSs) coupled with a phase transformation of the Co component, Co → CoO/Co(OH)2. The SMSI is observed in the electrochemically tuned Pd-Co hybrid system and leads to significantly enhanced catalytic activity for methanol oxidation reaction (MOR) due to the modified atomic/electronic structure, increased surface area, and more exposed electroactive sites. Compared with commercial Pd/C catalyst, the electrochemically tuned Pd-Co hybrid catalyst with SMSI exhibits superior catalytic activity (2330 mA∙mgPd-1) and much better stability (remains 503 mA∙mgPd-1 after 1000 cycles and 172 mA∙mgPd-1 after 5000 s), and therefore has great potential in practical applications.
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Affiliation(s)
- Hao Lei
- Key Laboratory of Ionic Liquids Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, PR China
| | - Qibo Zhang
- Key Laboratory of Ionic Liquids Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming 650093, PR China; State Key Laboratory of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province, Kunming 650093, PR China.
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4
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Abstract
Nanomaterials are widely used in electrocatalysts due to their quantum size effect and high utilization efficiency. There are two ways to improve the activity of nanoelectrocatalysts: increasing the number of active sites and improving the inherent activity of each catalytic site. The structure of the catalyst itself can be improved by increasing the number of exposed active sites per unit mass. The high porosity and three-dimensional network structure enable aerogels to have the characteristics of a large specific surface area, exposing many active sites and bringing structural stability through the self-supporting nature of aerogels. Thus, by adjusting the compositions of aerogels, the synergetic effect introduced by alloy elements can be utilized to further improve the single-site activity. In this review, we summarized the basic preparation strategy of aerogels and extended it to the preparation of alloys and special structure aerogels. Moreover, through the eight electrocatalysis cases, the outstanding catalytic performances and broad applicability of aerogel electrocatalysts are emphasized. Finally, we predict the future development of pure metallic aerogel electrocatalysts from the perspective of preparation to application.
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5
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Khan IA, Khan L, Khan SI, Badshah A. Shape-control synthesis of PdCu nanoparticles with excellent catalytic activities for direct alcohol fuel cells application. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136381] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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6
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Luo S, Xu D, Li J, Huang Y, Li L, Li X, Wu X, Gao M, Yang D, Zhang H. Au-Doped intermetallic Pd3Pb wavy nanowires as highly efficient electrocatalysts toward the oxygen reduction reaction. CrystEngComm 2020. [DOI: 10.1039/d0ce00944j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Au-Doped intermetallic Pd3Pb wavy nanowires were synthesized and exhibited substantially enhanced properties for the oxygen reduction reaction relative to commercial Pt/C.
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Affiliation(s)
- Sai Luo
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Dazhe Xu
- Center for High Pressure Science and Technology Advanced Research
- China
| | - Junjie Li
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Yuxuan Huang
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Lei Li
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Xiao Li
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Xingqiao Wu
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Mingxi Gao
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Deren Yang
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
| | - Hui Zhang
- State Key Laboratory of Silicon Materials & School of Materials Science and Engineering
- Zhejiang University
- Hangzhou
- P. R. China
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7
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Xue D, Li C, Wei P, Zhao S, Yu F, Yang Y. Optimization of Catalytic Sites in Cobalt‐Modified Nitrogen‐Doped Carbon towards High‐Performance Oxygen Reduction Electrocatalysts for Zinc‐Air Batteries. ChemElectroChem 2019. [DOI: 10.1002/celc.201901754] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Daxiang Xue
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech University Nanjing 211816 China
| | - Chenxue Li
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech University Nanjing 211816 China
| | - Penghui Wei
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech University Nanjing 211816 China
| | - Shulin Zhao
- School of Energy Science and EngineeringNanjing Tech University Nanjing 211816 China
| | - Fengjiao Yu
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech University Nanjing 211816 China
| | - Yang Yang
- State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech University Nanjing 211816 China
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8
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Arulmani S, Kumar PV, Landi G, Anandan S. Palladium/Copper Nanoalloy Supported on Carbon Nanotubes for the Electrooxidation of Methanol and Ethylene Glycol. ChemistrySelect 2019. [DOI: 10.1002/slct.201901234] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Subramanian Arulmani
- Department of ChemistryNational Institute of Technology Tiruchirappalli India- 620 015
- Department of Medicinal and Applied ChemistryKaohsiung Medical University Kaohsiung City- 807 Taiwan
- Research Center for Environmental MedicineKaohsiung Medical University Kaohsiung City- 807 Taiwan
| | - Ponnusamy Vinoth Kumar
- Department of Medicinal and Applied ChemistryKaohsiung Medical University Kaohsiung City- 807 Taiwan
- Research Center for Environmental MedicineKaohsiung Medical University Kaohsiung City- 807 Taiwan
| | - Giovanni Landi
- Institute for Polymers, Composites and Biomaterials (IPCB-CNR) Via Previati 1/C 23900 Lecco (LC) Italy
| | - Sambandam Anandan
- Department of ChemistryNational Institute of Technology Tiruchirappalli India- 620 015
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9
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Lei H, Li X, Sun C, Zeng J, Siwal SS, Zhang Q. Galvanic Replacement-Mediated Synthesis of Ni-Supported Pd Nanoparticles with Strong Metal-Support Interaction for Methanol Electro-oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1804722. [PMID: 30735296 DOI: 10.1002/smll.201804722] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 01/18/2019] [Indexed: 06/09/2023]
Abstract
Herein, well-defined Pd nanoparticles (NPs) developed on Ni substrate (Pd NPs/Ni) are synthesized via a facile galvanic replacement reaction (GRR) route performed in ethaline-based deep eutectic solvent (DES). For comparison, a Pd NPs/Ni composite is also prepared by the GRR method conducted in an aqueous solution. The Pd NPs/Ni obtained from the ethaline-DES is catalytically more active and durable for the methanol electro-oxidation reaction (MOR) than those of the counterpart derived from conventional aqueous solution and commercial Pd/C under alkaline media. Detailed kinetic analysis indicates that the unique solvent environment offered by ethaline plays vital roles in adjusting the reactivity of the active species and their mass transport properties to control over the genesis of the Pd NPs/Ni nanocomposite. The resulting Pd NPs/Ni catalyst possesses a homogeneous dispersion of Pd NPs with a strong Pd (metal)-Ni (support) interaction. This structure enhances the charge transfer between the support and the active phases, and optimizes the adsorption energy of OH- and CO on the surface, leading to superior electrocatalytic performance. This work provides a novel GRR strategy performed in ethaline-DES to the rational design and construction of advanced metal/support catalysts with strong interaction for improving the activity and durability for MOR.
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Affiliation(s)
- Hao Lei
- Department of Metallurgy, Key Laboratory of Ionic Liquids Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, P.R. China
| | - Xiaotong Li
- Department of Metallurgy, Key Laboratory of Ionic Liquids Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, P.R. China
| | - Changbin Sun
- Department of Metallurgy, Key Laboratory of Ionic Liquids Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, P.R. China
| | - Junrong Zeng
- Department of Metallurgy, Key Laboratory of Ionic Liquids Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, P.R. China
| | - Samarjeet Singh Siwal
- Department of Metallurgy, Key Laboratory of Ionic Liquids Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, P.R. China
| | - Qibo Zhang
- Department of Metallurgy, Key Laboratory of Ionic Liquids Metallurgy, Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, 650093, P.R. China
- State Key Laboratory of Complex Nonferrous Metal Resources Cleaning Utilization in Yunnan Province, Kunming University of Science and Technology, Kunming, 650093, P.R. China
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10
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Liu S, Li Y, Ta N, Zhou Y, Wu Y, Li M, Miao S, Shen W. Fabrication of palladium-copper nanoparticles with controllable size and chemical composition. J Colloid Interface Sci 2018; 526:201-206. [PMID: 29734087 DOI: 10.1016/j.jcis.2018.04.109] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 04/24/2018] [Accepted: 04/28/2018] [Indexed: 01/05/2023]
Abstract
A series of PdxCu100-x (x = 20, 40, 60, 80) particles with the sizes of 7-9 nm were fabricated by a two-step polyol reduction process, which differentiated the nucleation and growth steps of the nanoparticles. The primary reduction of Pd2+ by ethylene glycol at 393 K formed appreciable amounts of Pd0 nuclei, while the subsequent reduction at 473 K fully reduced the Pd2+ and Cu2+ species with the aid of the initially formed Pd nuclei seeds. Meanwhile, the releasing oleylamine, previously coordinated with metal cations, acted as the capping agent to segregate the nanoparticles. Both parameters simultaneously controlled the assembly kinetics of the bimetallic nanoparticles and resulted in uniform sizes and designed chemical compositions. Among them, the Pd80Cu20 nanoparticles showed quite promising activity and selectivity for the hydrogenation of nitrobenzene under mild conditions.
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Affiliation(s)
- Shuang Liu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yong Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
| | - Na Ta
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yan Zhou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Yongbin Wu
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mingrun Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Shu Miao
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Wenjie Shen
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.
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11
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Machado T, Macedo NG, Assis M, Doñate-Buendia C, Mínguez-Vega G, Teixeira MM, Foggi CC, Vergani CE, Beltrán-Mir H, Andrés J, Cordoncillo E, Longo E. From Complex Inorganic Oxides to Ag-Bi Nanoalloy: Synthesis by Femtosecond Laser Irradiation. ACS OMEGA 2018; 3:9880-9887. [PMID: 31459116 PMCID: PMC6644639 DOI: 10.1021/acsomega.8b01264] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Accepted: 08/13/2018] [Indexed: 05/17/2023]
Abstract
Bimetallic nanoalloys with a wide variety of structures and compositions have been fabricated through many diverse techniques. Generally, various steps and chemicals are involved in their fabrication. In this study, the synthesis of Ag-Bi nanoalloys by femtosecond laser irradiation of an inorganic oxide Ag2WO4/NaBiO3 target without any chemicals like reducing agents or solvent is presented. The interaction between these materials and the ultrashort pulse of light allows the migration of Ag and Bi atoms from the crystal lattice to the particles surfaces and then to the plasma plume, where the reduction of the positively charged Ag and Bi species in their respective metallic species takes place. Subsequently, the controlled nucleation and growth of the Ag-Bi alloyed nanoparticles occurs in situ during the irradiation process in air. Although at the bulk level, these elements are highly immiscible, it was experimentally demonstrated that at nanoscale, the Ag-Bi nanoalloy can assume a randomly mixed structure with up to 6 ± 1 atom % of Bi solubilized into the face-centered cubic structure of Ag. Furthermore, the Ag-Bi binary system possesses high antibacterial activity against Staphylococcus aureus (methicillin-resistant and methicilin-susceptible), which is interesting for potential antimicrobial applications, consequently increasing their range of applicability. The present results provide potential insights into the structures formed by the Ag-Bi systems at the nanoscale and reveal a new processing method where complex inorganic oxides can be used as precursors for the controlled synthesis of alloyed bimetallic nanoparticles.
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Affiliation(s)
- Thales
R. Machado
- Departamento
de Química, CDMF, Universidade Federal
de São Carlos (UFSCar), São Carlos 13565-905, São Paulo, Brazil
| | - Nadia G. Macedo
- Departamento
de Química, CDMF, Universidade Federal
de São Carlos (UFSCar), São Carlos 13565-905, São Paulo, Brazil
| | - Marcelo Assis
- Departamento
de Química, CDMF, Universidade Federal
de São Carlos (UFSCar), São Carlos 13565-905, São Paulo, Brazil
| | - Carlos Doñate-Buendia
- Institut de Noves Tecnologies de la Imatge (INIT),
GROC, Departament
de Química
Inorgànica i Orgànica, and Departament de Química Física
i Analítica, Universitat Jaume I
(UJI), Castellón de la Plana 12071, Castelló, Spain
| | - Gladys Mínguez-Vega
- Institut de Noves Tecnologies de la Imatge (INIT),
GROC, Departament
de Química
Inorgànica i Orgànica, and Departament de Química Física
i Analítica, Universitat Jaume I
(UJI), Castellón de la Plana 12071, Castelló, Spain
| | - Mayara M. Teixeira
- Departamento
de Química, CDMF, Universidade Federal
de São Carlos (UFSCar), São Carlos 13565-905, São Paulo, Brazil
| | - Camila C. Foggi
- Departamento
de Química, CDMF, Universidade Federal
de São Carlos (UFSCar), São Carlos 13565-905, São Paulo, Brazil
| | - Carlos E. Vergani
- Faculdade
de Odontologia, Universidade Estadual Paulista
(UNESP), Araraquara 14801-385, São Paulo, Brazil
| | - Héctor Beltrán-Mir
- Institut de Noves Tecnologies de la Imatge (INIT),
GROC, Departament
de Química
Inorgànica i Orgànica, and Departament de Química Física
i Analítica, Universitat Jaume I
(UJI), Castellón de la Plana 12071, Castelló, Spain
| | - Juan Andrés
- Institut de Noves Tecnologies de la Imatge (INIT),
GROC, Departament
de Química
Inorgànica i Orgànica, and Departament de Química Física
i Analítica, Universitat Jaume I
(UJI), Castellón de la Plana 12071, Castelló, Spain
| | - Eloisa Cordoncillo
- Institut de Noves Tecnologies de la Imatge (INIT),
GROC, Departament
de Química
Inorgànica i Orgànica, and Departament de Química Física
i Analítica, Universitat Jaume I
(UJI), Castellón de la Plana 12071, Castelló, Spain
| | - Elson Longo
- Departamento
de Química, CDMF, Universidade Federal
de São Carlos (UFSCar), São Carlos 13565-905, São Paulo, Brazil
- E-mail:
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12
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Bhat SA, Rashid N, Rather MA, Pandit SA, Rather GM, Ingole PP, Bhat MA. PdAg Bimetallic Nanoalloy-Decorated Graphene: A Nanohybrid with Unprecedented Electrocatalytic, Catalytic, and Sensing Activities. ACS APPLIED MATERIALS & INTERFACES 2018; 10:16376-16389. [PMID: 29658695 DOI: 10.1021/acsami.8b00510] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Recent reports about the promising and tunable electrocatalytic activity and stability of nanoalloys have stimulated an intense research activity toward the design and synthesis of homogeneously alloyed novel bimetallic nanoelectrocatalysts. We herein present a simple one-pot facile wet-chemical approach for the deposition of high-quality bimetallic palladium-silver (PdAg) homogeneous nanoalloy crystals on reduced graphene (Gr) oxide sheets. Morphological, structural, and chemical characterizations of the so-crafted nanohybrids establish a homogeneous distribution of 1:1 PdAg nanoalloy crystals supported over reduced graphene oxide (PdAg-Gr). The PdAg-Gr nanohybrids exhibit outstanding electrocatalytic, catalytic, and electroanalytical performances. The PdAg-Gr samples were found to exhibit exceptional durability when subjected to repeated potential cycles or long-term electrolysis. In the CVs recorded for fuel cell reactions, viz. methanol oxidation reaction and oxygen reduction reaction, and for detoxification of environmental pollutants, viz. electroreduction of methyl iodide and chloroacetonitrile over PdAg-Gr with potential sweep rate of 25 mVs-1, the peak potentials were observed to be just -0.221, -0.297, (vs Ag/AgCl, 3 M KCl) -1.508, and -1.189 V (vs Fc+/Fc), respectively. The potential of PdAg-Gr nanohybrid for simultaneous and sensitive electrochemical sensing and estimation of hydroxybenzene isomers with very low detection limits (0.05 μM for hydroquinone, 0.06 μM for catechol, 6.7 nM for 4-aminophenol, and 13.7 nM for 2-aminophenol) is demonstrated. Additionally, PdAg-Gr was observed to offer excellent solution-phase catalytic performance in bringing about the reduction of notorious environmental pollutant 4-nitrophenol to pharmaceutically important 4-aminophenol with an apparent rate constant ( kapp) of 3.106 × 10-2 s-1 and a normalized rate constant ( knor) of 6.21 × 102 s-1 g-1. The presented synthetic scheme besides being high yielding, low cost, and easy to carry out results in the production of PdAg-Gr nanohybrids with stability and activity significantly better than most of the nanomaterials purposefully designed and testified so far by various groups.
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Affiliation(s)
- Sajad Ahmad Bhat
- Department of Chemistry , University of Kashmir , Srinagar 190006 , J&K , India
| | - Nusrat Rashid
- Department of Chemistry , Indian Institute of Technology Delhi , New Delhi 110016 , India
| | | | - Sarwar Ahmad Pandit
- Department of Chemistry , University of Kashmir , Srinagar 190006 , J&K , India
| | | | - Pravin P Ingole
- Department of Chemistry , Indian Institute of Technology Delhi , New Delhi 110016 , India
| | - Mohsin Ahmad Bhat
- Department of Chemistry , University of Kashmir , Srinagar 190006 , J&K , India
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13
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Begum H, Ahmed MS, Jeon S. Highly Efficient Dual Active Palladium Nanonetwork Electrocatalyst for Ethanol Oxidation and Hydrogen Evolution. ACS APPLIED MATERIALS & INTERFACES 2017; 9:39303-39311. [PMID: 29068660 DOI: 10.1021/acsami.7b09855] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Tunable palladium nanonetwork (PdNN) has been developed for catalyzing ethanol oxidation reaction (EOR) and hydrogen evolution reaction (HER) in alkaline electrolyte. 3D PdNN is regarded as a dual active electrocatalyst for both EOR and HER for energy conversion application. The PdNN has been synthesized by the simple chemical route with the assistance of zinc precursor and a surfactant (i.e., cetyltrimethylammonium bromide, CTAB). The thickness of the network can be tuned by simply adjusting the concentration of CTAB. Both EOR and HER have been performed in an alkaline electrolyte, and characterized by different voltammetric methods. The 3D PdNN has shown 2.2-fold higher electrochemical surface area than the commercially available Pt/C including other tested catalysts with minimal Pd loading. As a result, it provides a higher density of EOR and HER active sites and facilitated the electron transport. For example, it shows 2.6-fold higher mass activity with significantly lower CO2 production for EOR and the similar overpotential (110 mV @ 10 mA cm-2) for HER compared to Pt/C with better reaction kinetics for both reactions. Thus, the PdNN is proved as an efficient electrocatalyst with better electrocatalytic activity and stability than state-of-the-art Pt/C for both EOR and HER because of the crystalline, monodispersed, and support-free porous nanonetwork.
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Affiliation(s)
- Halima Begum
- Department of Chemistry and Institute of Basic Science, Chonnam National University , Gwangju 500-757, Republic of Korea
| | - Mohammad Shamsuddin Ahmed
- Department of Chemistry and Institute of Basic Science, Chonnam National University , Gwangju 500-757, Republic of Korea
| | - Seungwon Jeon
- Department of Chemistry and Institute of Basic Science, Chonnam National University , Gwangju 500-757, Republic of Korea
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14
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Hurtado RB, Cortez-Valadez M, Arizpe-Chávez H, Flores-Lopez NS, Álvarez RAB, Flores-Acosta M. Nanowire networks and hollow nanospheres of Ag-Au bimetallic alloys at room temperature. NANOTECHNOLOGY 2017; 28:115606. [PMID: 28211363 DOI: 10.1088/1361-6528/aa5c7a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Due to their physicochemical properties, metallic nanoalloys have potential applications in biomedicine, electrocatalysis and electrochemical sensors, among many other fields. New alternative procedures have emerged in order to reduce production costs and the use of toxic substances. In this study we present a novel low-toxicity synthesis method for the fabrication of nanowire networks (NWNs) and Ag-Au hollow nanospheres. The synthesis process is performed at room temperature without any sophisticated equipment, such as special cameras or furnaces, etc. Transmission electron microscopy showed that the NWNs contain random alloys with a diameter of between 10-13 nm. The radius for the hollow nanospheres is approximately located between 70-130 nm. The absorption bands in the UV-vis spectrum associated with the surface plasmon in Ag-Au bimetallic nanoparticles are highlighted at 385 nm for the NWNs and 643 nm for the hollow nanospheres. The study was performed with low-toxicity substances, such as rongalite, ascorbic acid and sucrose, and showed high efficiency for the fabrication of these types of nanostructures, as well as good stability for long periods of time.
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Affiliation(s)
- R Britto Hurtado
- Departamento de Investigación en Física, Universidad de Sonora, Apdo. Postal 5-88, 83190, Hermosillo, Sonora, Mexico
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15
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Chang X, Liu AF, Cai B, Luo JY, Pan H, Huang YB. Catalytic Transfer Hydrogenation of Furfural to 2-Methylfuran and 2-Methyltetrahydrofuran over Bimetallic Copper-Palladium Catalysts. CHEMSUSCHEM 2016; 9:3330-3337. [PMID: 27863073 DOI: 10.1002/cssc.201601122] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 09/20/2016] [Indexed: 06/06/2023]
Abstract
The catalytic transfer hydrogenation of furfural to the fuel additives 2-methylfuran (2-MF) and 2-methyltetrahydrofuran (2-MTHF) was investigated over various bimetallic catalysts in the presence of the hydrogen donor 2-propanol. Of all the as-prepared catalysts, bimetallic Cu-Pd catalysts showed the highest catalytic activities towards the formation of 2-MF and 2-MTHF with a total yield of up to 83.9 % yield at 220 °C in 4 h. By modifying the Pd ratios in the Cu-Pd catalyst, 2-MF or 2-MTHF could be obtained selectively as the prevailing product. The other reaction conditions also had a great influence on the product distribution. Mechanistic studies by reaction monitoring and intermediate conversion revealed that the reaction proceeded mainly through the hydrogenation of furfural to furfuryl alcohol, which was followed by deoxygenation to 2-MF in parallel to deoxygenation/ring hydrogenation to 2-MTHF. Finally, the catalyst showed a high reactivity and stability in five catalyst recycling runs, which represents a significant step forward toward the catalytic transfer hydrogenation of furfural.
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Affiliation(s)
- Xin Chang
- Department of Chemical Engineering, Nanjing Forestry University, Longpan Road, Nanjing, China
| | - An-Feng Liu
- Department of Chemical Engineering, Nanjing Forestry University, Longpan Road, Nanjing, China
| | - Bo Cai
- Department of Chemical Engineering, Nanjing Forestry University, Longpan Road, Nanjing, China
| | - Jin-Yue Luo
- Department of Chemical Engineering, Nanjing Forestry University, Longpan Road, Nanjing, China
| | - Hui Pan
- Department of Chemical Engineering, Nanjing Forestry University, Longpan Road, Nanjing, China
| | - Yao-Bing Huang
- Department of Chemical Engineering, Nanjing Forestry University, Longpan Road, Nanjing, China
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16
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Hoseini SJ, Habib Agahi B, Samadi Fard Z, Hashemi Fath R, Bahrami M. Modification of palladium-copper thin film by reduced graphene oxide or platinum as catalyst for Suzuki-Miyaura reactions. Appl Organomet Chem 2016. [DOI: 10.1002/aoc.3607] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- S. Jafar Hoseini
- Department of Chemistry, Faculty of Sciences; Yasouj University; Yasouj 7591874831 Iran
| | - Behnaz Habib Agahi
- Department of Chemistry, Faculty of Sciences; Yasouj University; Yasouj 7591874831 Iran
| | - Zahra Samadi Fard
- Department of Chemistry, Faculty of Sciences; Yasouj University; Yasouj 7591874831 Iran
| | - Roghayeh Hashemi Fath
- Department of Chemistry, Faculty of Sciences; Yasouj University; Yasouj 7591874831 Iran
| | - Mehrangiz Bahrami
- Department of Chemistry, Faculty of Sciences; Yasouj University; Yasouj 7591874831 Iran
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17
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Arulmani S, Krishnamoorthy S, Wu JJ, Anandan S. High-Performance Electrocatalytic Activity of Palladium-Copper Nanoalloy towards Methanol Electro-oxidation in an Alkaline Medium. ELECTROANAL 2016. [DOI: 10.1002/elan.201600164] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Subramanian Arulmani
- Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry; National Institute of Technology; Tiruchirappalli- 620 015 India
| | - Sathiyan Krishnamoorthy
- Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry; National Institute of Technology; Tiruchirappalli- 620 015 India
| | - Jerry J. Wu
- Department of Environmental Engineering and Science; Feng Chia University; Taichung 407 Taiwan
| | - Sambandam Anandan
- Nanomaterials and Solar Energy Conversion Lab, Department of Chemistry; National Institute of Technology; Tiruchirappalli- 620 015 India
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18
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Fan Y, Zhang Y, Cui Y, Wang J, Wei M, Zhang X, Li W. A porous ternary PtPdCu alloy with a spherical network structure for electrocatalytic methanol oxidation. RSC Adv 2016. [DOI: 10.1039/c6ra18720j] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
A porous ternary alloy Pt5PdCu5 was prepared, which exhibits a unique spherical network structure with a high specific surface area of 86.9 m2 g−1 and enhanced electrocatalytic activity towards methanol oxidation.
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Affiliation(s)
- Yang Fan
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
- Institute for Conservation and Utilization of Agro-bioresources in Dabie Mountains
| | - Yan Zhang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Ying Cui
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Jiaoli Wang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Mengmeng Wei
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Xinkang Zhang
- College of Chemistry and Chemical Engineering
- Xinyang Normal University
- Xinyang 464000
- China
| | - Wei Li
- School of Physics
- Huazhong University of Science and Technology
- Wuhan 430074
- China
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19
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Jiang B, Li C, Malgras V, Bando Y, Yamauchi Y. Three-dimensional hyperbranched PdCu nanostructures with high electrocatalytic activity. Chem Commun (Camb) 2016; 52:1186-9. [DOI: 10.1039/c5cc08581k] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
In this study, three-dimensional (3D) PdCu alloyed nanostructures, consisting of one-dimensional (1D) branches, were successfully synthesized through a facile wet-chemical method without using any seeds or organic solvent.
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Affiliation(s)
- Bo Jiang
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
- Faculty of Science and Engineering
| | - Cuiling Li
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - Victor Malgras
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - Yoshio Bando
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
| | - Yusuke Yamauchi
- World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA)
- National Institute for Materials Science (NIMS)
- Tsukuba
- Japan
- Faculty of Science and Engineering
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20
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He LL, Song P, Feng JJ, Huang WH, Wang QL, Wang AJ. Simple wet-chemical synthesis of alloyed PdAu nanochain networks with improved electrocatalytic properties. Electrochim Acta 2015. [DOI: 10.1016/j.electacta.2015.06.137] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Electrocatalytic Properties of Carbon Nanotubes Decorated with Copper and Bimetallic CuPd Nanoparticles. Top Catal 2015. [DOI: 10.1007/s11244-015-0480-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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22
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Zhu C, Du D, Eychmüller A, Lin Y. Engineering Ordered and Nonordered Porous Noble Metal Nanostructures: Synthesis, Assembly, and Their Applications in Electrochemistry. Chem Rev 2015; 115:8896-943. [DOI: 10.1021/acs.chemrev.5b00255] [Citation(s) in RCA: 502] [Impact Index Per Article: 55.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Chengzhou Zhu
- School
of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920, United States
| | - Dan Du
- School
of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920, United States
- Key
Laboratory of Pesticide and Chemical Biology of the Ministry of Education,
College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | | | - Yuehe Lin
- School
of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164-2920, United States
- Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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23
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Fu S, Zhu C, Du D, Lin Y. Facile One-Step Synthesis of Three-Dimensional Pd-Ag Bimetallic Alloy Networks and Their Electrocatalytic Activity toward Ethanol Oxidation. ACS APPLIED MATERIALS & INTERFACES 2015; 7:13842-8. [PMID: 26053942 DOI: 10.1021/acsami.5b01963] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
The three-dimensional palladium networks and palladium-silver bimetallic alloy networks were synthesized at room temperature on a large scale using a rapid and simple strategy. The results revealed that the morphology of the networks is not affected by the composition. We demonstrated that the as-prepared unsupported networks exhibited excellent electrochemical activity and stability toward ethanol oxidation reaction in alkaline media due to the formation of palladium-silver alloys as well as the porous nanostructures. The results indicate that the well-defined three-dimensional palladium-silver bimetallic alloy networks are promising catalysts for fuel cells.
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Affiliation(s)
- Shaofang Fu
- †Department of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Chengzhou Zhu
- †Department of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Dan Du
- †Department of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
| | - Yuehe Lin
- †Department of Mechanical and Materials Engineering, Washington State University, Pullman, Washington 99164, United States
- ‡Pacific Northwest National Laboratory, Richland, Washington 99352, United States
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24
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Yu F, Liu Z, Zhou W. Facile Synthesis of (110)‐Plane‐Exposed Au Microflowers as High Sensitive Hydrogen Peroxide Sensors. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500164] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Fengjiao Yu
- School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, United Kingdom, http://www.st‐andrews.ac.uk/chemistry/
| | - Zhong Liu
- School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, United Kingdom, http://www.st‐andrews.ac.uk/chemistry/
- Key Laboratory of Salt Lake Resources and Chemistry, Qinghai Institute of Salt Lakes, Chinese Academy of Sciences, Xining 810008, China
| | - Wuzong Zhou
- School of Chemistry, University of St Andrews, St Andrews, KY16 9ST, United Kingdom, http://www.st‐andrews.ac.uk/chemistry/
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25
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Zhang ZQ, Huang J, Zhang L, Sun M, Wang YC, Lin Y, Zeng J. Facile synthesis of Cu-Pd bimetallic multipods for application in cyclohexane oxidation. NANOTECHNOLOGY 2014; 25:435602. [PMID: 25297725 DOI: 10.1088/0957-4484/25/43/435602] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The synergy between Cu and Pd makes Cu-Pd bimetallic nanocrystals interesting materials for investigation. The scarcity of shapes of Cu-Pd bimetallic nanocrystals motivated us to explore highly branched structures, which may promote a wide range of applications. In this communication, we report a facile synthesis of Cu-Pd bimetallic multipods (19.2 ± 1.2 nm), on branches of which some high-index facets were exposed. Modification of reaction parameters concerning capping agents and reductant led to the formation of other shapes, including sphere-like nanocrystals (SNCs). When loaded onto TiO2, the as-prepared Cu-Pd bimetallic multipods exhibited excellent catalytic activity for the oxidation of cyclohexane by hydrogen peroxide and higher selectivity towards cyclohexanone than monometallic catalysts and SNCs/TiO2.
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Affiliation(s)
- Zhuo-Qun Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, Collaborative Innovation Center of Suzhou Nano Science and Technology, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China. Center of Advanced Nanocatalysis (CAN-USTC), Department of Chemical Physics, University of Science and Technology of China, Hefei, Anhui 230026, People's Republic of China
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26
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Yoo J, Lee S, Lee CK, Kim C, Fujigaya T, Park HJ, Nakashima N, Shim JK. Homogeneous decoration of zeolitic imidazolate framework-8 (ZIF-8) with core–shell structures on carbon nanotubes. RSC Adv 2014. [DOI: 10.1039/c4ra06792d] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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27
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Zhao J, Han Q, Zhu J, Wu X, Wang X. Synthesis of Bi nanowire networks and their superior photocatalytic activity for Cr(vi) reduction. NANOSCALE 2014; 6:10062-10070. [PMID: 25032997 DOI: 10.1039/c4nr01660b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Interconnected Bi nanowire networks were synthesized for the first time via a solvothermal route by using ethylene glycol (EG) as both a solvent and a reducing agent, and citric acid (CA) as a stabilizing agent at a molar ratio of CA/Bi(3+) = 5. Among various reaction conditions including the temperature, reaction time and precursor concentration, the molar ratio of CA/Bi(3+) was the dominant experimental parameter to influence the morphology and structures of the Bi crystals. Highly dispersed Bi microspheres and network-like Bi thick wires were obtained if the molar ratio of CA/Bi(3+) was changed to 2.5 and 10, respectively. As compared to other additives including trisodium citrate, cetyltrimethylammonium bromide (CTAB) and oxalic acid, good solubility of CA in EG together with its coordination effect played a crucial role in the formation of network-like Bi nanowires. The Bi nanowire networks exhibited excellent photocatalytic performance for Cr(vi) reduction. Cr(vi) was completely reduced to less toxic Cr(iii) after 8 min and 55 min of UV and visible-light irradiation, respectively.
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Affiliation(s)
- Jin Zhao
- Key Laboratory for Soft Chemistry and Functional Materials, Ministry of Education, Nanjing University of Science and Technology, Nanjing 210094, China.
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28
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Xu S, Li H, Wang L, Yue Q, Sixiu S, Liu J. One-pot synthesis of Ag@Cu yolk–shell nanostructures and their application as non-enzymatic glucose biosensors. CrystEngComm 2014. [DOI: 10.1039/c4ce01074d] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
In this report, Ag@Cu yolk–shell nanostructures have been synthesized through a facile one-pot hydrothermal method.
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Affiliation(s)
- Shuling Xu
- Department of Chemistry
- Liaocheng University
- Liaocheng, PR China
| | - Haibo Li
- Department of Chemistry
- Liaocheng University
- Liaocheng, PR China
| | - Lei Wang
- Department of Chemistry
- Liaocheng University
- Liaocheng, PR China
| | - Qiaoli Yue
- Department of Chemistry
- Liaocheng University
- Liaocheng, PR China
| | - Sun Sixiu
- Department of Chemistry
- Shandong University
- Jinan, PR China
| | - Jifeng Liu
- Department of Chemistry
- Liaocheng University
- Liaocheng, PR China
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29
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Odedairo T, Zhou W, Chen J, Zhu Z. Flower-like perovskite LaCr0.9Ni0.1O3−δ–NiO nanostructures: a new candidate for CO2 reforming of methane. RSC Adv 2014. [DOI: 10.1039/c4ra00398e] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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