1
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Alhajj M, Salim A, Ghoshal S, Huyop F, Safwan Abd Aziz M, Sharma S. Physicochemical robustness of pulse laser ablated silver-copper nanocomposoites against varied bacterial strains. OPTICS & LASER TECHNOLOGY 2023; 165:109610. [DOI: 10.1016/j.optlastec.2023.109610] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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2
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Alhajj M, Aziz MSA, Huyop F, Salim AA, Sharma S, Ghoshal SK. Prominent bactericidal characteristics of silver-copper nanocomposites produced via pulse laser ablation. BIOMATERIALS ADVANCES 2022; 142:213136. [PMID: 36206587 DOI: 10.1016/j.bioadv.2022.213136] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/17/2022] [Accepted: 09/27/2022] [Indexed: 06/16/2023]
Abstract
This paper reports the characterization and antibacterial performance evaluation of some spherical and stable crystalline silver (Ag)/copper (Cu) nanocomposites (Ag-CuNCs) prepared in deionized water (DIW) using pulse laser ablation in liquid (PLAL) method. The influence of various laser fluences (LFs) on the structural, morphological, optical and antibacterial properties of these NCs were determined. The UV-Vis absorbance of these NCs at 403 nm and 595 nm was gradually increased accompanied by a blue shift. XRD patterns disclosed the nucleation of highly crystalline Ag-CuNCs with their face centered cubic lattice structure. TEM images showed the existence of spherical NCs with size range of 3-20 nm and lattice fringe spacing of approximately 0.145 nm. EDX profiles of Ag-CuNCs indicated their high purity. The antibacterial effectiveness of the Ag-CuNCs was evaluated by the inhibition zone diameter (IZD) and optical density (OD600) tests against Gram-negative (Escherichia coli) and Gram-positive (Staphylococcus aureus) bacteria. The proposed NCs revealed the IZD values in the range of 22-26 mm and 20-25 mm when tested against E. coli and S. aureus bacteria, respectively. The Ag-CuNCs prepared at LF of 14.15 J/cm2 revealed the best bactericidal activity. It is established that by controlling the laser fluence the bactericidal effectiveness of the Ag-CuNCs can be tuned.
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Affiliation(s)
- Mahmood Alhajj
- Physics Department & Laser Center, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor, Malaysia.
| | - Md Safwan Abd Aziz
- Physics Department & Laser Center, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor, Malaysia.
| | - Fahrul Huyop
- Biosciences Department, Faculty of Science, Universiti Teknologi Malaysia, 81310 Johor, Malaysia.
| | - A A Salim
- Physics Department & Laser Center, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor, Malaysia.
| | - Sunita Sharma
- Department of Applied Sciences, The NorthCap University, Gurugram 122017, Haryana, India.
| | - S K Ghoshal
- Physics Department & Laser Center, Faculty of Science, Universiti Teknologi Malaysia, 81310, Johor, Malaysia.
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3
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Givalou L, Tsichlis D, Zhang F, Karagianni CS, Terrones M, Kordatos K, Falaras P. Transition metal – Graphene oxide nanohybrid materials as counter electrodes for high efficiency quantum dot solar cells. Catal Today 2020. [DOI: 10.1016/j.cattod.2019.03.035] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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4
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Lee HK, Koh CS, Lo WS, Liu Y, Phang IY, Sim HY, Lee YH, Phan-Quang GC, Han X, Tsung CK, Ling XY. Applying a Nanoparticle@MOF Interface To Activate an Unconventional Regioselectivity of an Inert Reaction at Ambient Conditions. J Am Chem Soc 2020; 142:11521-11527. [PMID: 32508093 DOI: 10.1021/jacs.0c04144] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Here we design an interface between a metal nanoparticle (NP) and a metal-organic framework (MOF) to activate an inert CO2 carboxylation reaction and in situ monitor its unconventional regioselectivity at the molecular level. Using a Kolbe-Schmitt reaction as model, our strategy exploits the NP@MOF interface to create a pseudo high-pressure CO2 microenvironment over the phenolic substrate to drive its direct C-H carboxylation at ambient conditions. Conversely, Kolbe-Schmitt reactions usually demand high reaction temperature (>125 °C) and pressure (>80 atm). Notably, we observe an unprecedented CO2 meta-carboxylation of an arene that was previously deemed impossible in traditional Kolbe-Schmitt reactions. While the phenolic substrate in this study is fixed at the NP@MOF interface to facilitate spectroscopic investigations, free reactants could be activated the same way by the local pressurized CO2 microenvironment. These valuable insights create enormous opportunities in diverse applications including synthetic chemistry, gas valorization, and greenhouse gas remediation.
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Affiliation(s)
- Hiang Kwee Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Charlynn Sher Koh
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Wei-Shang Lo
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Yejing Liu
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - In Yee Phang
- Institute of Materials Research and Engineering, Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis, #08-03, Singapore 138634
| | - Howard Yi Sim
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Yih Hong Lee
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Gia Chuong Phan-Quang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Xuemei Han
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
| | - Chia-Kuang Tsung
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Xing Yi Ling
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371
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5
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Sooraj M, Nair AS, Pillai SC, Hinder SJ, Mathew B. CuNPs decorated molecular imprinted polymer on MWCNT for the electrochemical detection of l-DOPA. ARAB J CHEM 2020. [DOI: 10.1016/j.arabjc.2018.06.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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6
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Li J, Xia W, Wang T, Zheng L, Lai Y, Pan J, Jiang C, Song L, Wang M, Zhang H, Chen N, Chen G, He J. A Facile Route for Constructing Effective Cu-N x Active Sites for Oxygen Reduction Reaction. Chemistry 2019; 26:4070-4079. [PMID: 31633249 DOI: 10.1002/chem.201903822] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 10/09/2019] [Indexed: 11/10/2022]
Abstract
The coordination number between copper and nitrogen in copper/nitrogen-based electrocatalysts is important for boosting the oxygen reduction reaction (ORR). However, it is difficult to control unsaturated copper/nitrogen constructions as well as to compare their ORR performances in similar carbon matrices in a simple yet efficient manner. In this study, we have easily attained two types of Cu+ -N2 and Cu2+ -N4 constructions simply by etching pyrolyzed Cu-doped zeolitic imidazolate framework nanoleaves (Cu-ZIF-L) with sulfuric acid or nitric acid, respectively. X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) spectra were recorded to further confirm the different copper/nitrogen constructions after the different acid treatments. Electrochemical studies have demonstrated that Cu+ -N2 sites are more active in boosting the ORR performance than Cu2+ -N4 sites. Furthermore, Cu-N/C-H2 SO4 , used as an air cathode in a zinc-air battery, exhibited excellent performance and stability.
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Affiliation(s)
- Jingjing Li
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Wei Xia
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Tao Wang
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Lirong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yue Lai
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Junjie Pan
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Cheng Jiang
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Li Song
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Mengyu Wang
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Huting Zhang
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Na Chen
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
| | - Guang Chen
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, P. R. China.,University of the Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Jianping He
- College of Materials Science and Technology, Jiangsu Key Laboratory of, Electrochemical Energy Storage Technologies, Nanjing University of, Aeronautics and Astronautics, 210016, Nanjing, P. R. China
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7
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Mukwevho N, Fosso-Kankeu E, Waanders F, Kumar N, Ray SS, Yangkou Mbianda X. Photocatalytic activity of Gd2O2CO3·ZnO·CuO nanocomposite used for the degradation of phenanthrene. SN APPLIED SCIENCES 2018. [DOI: 10.1007/s42452-018-0012-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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8
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Abacha I, Boukhrissa S. Free-Cyanide Synthesis and Characterization of Cu–Zn Alloy by an Electrodeposition-Annealing Route. SURFACE ENGINEERING AND APPLIED ELECTROCHEMISTRY 2018. [DOI: 10.3103/s1068375518050022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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9
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Sun W, Gao L, Sun X, Zheng G. A novel route with a Cu(ii)-MOF-derived structure to synthesize Cu/Cu2O NPs@graphene: the electron transfer leads to the synergistic effect of the Cu(0)–Cu(i) phase for an effective catalysis of the Sonogashira cross-coupling reactions. Dalton Trans 2018; 47:5538-5541. [DOI: 10.1039/c8dt00465j] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Cu(ii)-MOF-derived route for twophase Cu/Cu2O-graphene. The electron transfer leads to a synergistic catalysis in the Sonogashira cross-coupling reactions.
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Affiliation(s)
- Wei Sun
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Lingfeng Gao
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Xu Sun
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
| | - Gengxiu Zheng
- School of Chemistry and Chemical Engineering
- University of Jinan
- Jinan 250022
- P. R. China
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10
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Sun SW, Liu HL, Zhou Y, Wang FB, Xia XH. Copper–Nitrogen-Doped Graphene Hybrid as an Electrochemical Sensing Platform for Distinguishing DNA Bases. Anal Chem 2017; 89:10858-10865. [DOI: 10.1021/acs.analchem.7b02520] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Shu-Wen Sun
- State
Key Laboratory of Analytical Chemistry for Life Science, School of
Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
- Department
of Applied Chemistry, Yuncheng University, Yuncheng, 044000, China
| | - Hai-Ling Liu
- State
Key Laboratory of Analytical Chemistry for Life Science, School of
Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Yue Zhou
- State
Key Laboratory of Analytical Chemistry for Life Science, School of
Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Feng-Bin Wang
- State
Key Laboratory of Analytical Chemistry for Life Science, School of
Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Xing-Hua Xia
- State
Key Laboratory of Analytical Chemistry for Life Science, School of
Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
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11
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Karthik N, Edison TNJI, Lee YR, Sethuraman MG. Fabrication of corrosion resistant mussel-yarn like superhydrophobic composite coating on aluminum surface. J Taiwan Inst Chem Eng 2017. [DOI: 10.1016/j.jtice.2017.05.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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12
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Marcos FC, Assaf JM, Assaf EM. Catalytic hydrogenation of CO 2 into methanol and dimethyl ether over Cu-X/V-Al PILC (X = Ce and Nb) catalysts. Catal Today 2017. [DOI: 10.1016/j.cattod.2016.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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13
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García-Trenco A, White ER, Regoutz A, Payne DJ, Shaffer MSP, Williams CK. Pd2Ga-Based Colloids as Highly Active Catalysts for the Hydrogenation of CO2 to Methanol. ACS Catal 2017. [DOI: 10.1021/acscatal.6b02928] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrés García-Trenco
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, U.K. OX1 3TA
| | | | | | | | | | - Charlotte K. Williams
- Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford, U.K. OX1 3TA
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14
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Pike SD, García-Trenco A, White ER, Leung AHM, Weiner J, Shaffer MSP, Williams CK. Colloidal Cu/ZnO catalysts for the hydrogenation of carbon dioxide to methanol: investigating catalyst preparation and ligand effects. Catal Sci Technol 2017. [DOI: 10.1039/c7cy01191a] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
This paper reports on the influences of the catalyst preparation method and ligand effects for a series of highly active Cu/ZnO colloidal catalysts for the hydrogenation of CO2 to methanol.
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Affiliation(s)
| | - Andrés García-Trenco
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
| | | | - Alice H. M. Leung
- Department of Chemistry
- University of Oxford
- Chemistry Research Laboratory
- Oxford
- UK
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15
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Abukabda AB, Stapleton PA, Nurkiewicz TR. Metal Nanomaterial Toxicity Variations Within the Vascular System. Curr Environ Health Rep 2016; 3:379-391. [PMID: 27686080 PMCID: PMC5112123 DOI: 10.1007/s40572-016-0112-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Engineered nanomaterials (ENM) are anthropogenic materials with at least one dimension less than 100 nm. Their ubiquitous employment in biomedical and industrial applications in the absence of full toxicological assessments raises significant concerns over their safety on human health. This is a significant concern, especially for metal and metal oxide ENM as they may possess the greatest potential to impair human health. A large body of literature has developed that reflects adverse systemic effects associated with exposure to these materials, but an integrated mechanistic framework for how ENM exposure influences morbidity remains elusive. This may be due in large part to the tremendous diversity of existing ENM and the rate at which novel ENM are produced. In this review, the influence of specific ENM physicochemical characteristics and hemodynamic factors on cardiovascular toxicity is discussed. Additionally, the toxicity of metallic and metal oxide ENM is presented in the context of the cardiovascular system and its discrete anatomical and functional components. Finally, future directions and understudied topics are presented. While it is clear that the nanotechnology boom has increased our interest in ENM toxicity, it is also evident that the field of cardiovascular nanotoxicology remains in its infancy and continued, expansive research is necessary in order to determine the mechanisms via which ENM exposure contributes to cardiovascular morbidity.
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Affiliation(s)
- Alaeddin B. Abukabda
- Center for Cardiovascular and Respiratory Sciences, West Virginia University School of Medicine, Morgantown, WV, USA
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Phoebe A. Stapleton
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Environmental and Occupational Health Sciences Institute, Rutgers University, Piscataway, NJ, USA
| | - Timothy R. Nurkiewicz
- Center for Cardiovascular and Respiratory Sciences, West Virginia University School of Medicine, Morgantown, WV, USA
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
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16
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Hoseini SJ, Aramesh N, Bahrami M. Effect of addition of iron on morphology and catalytic activity of PdCu nanoalloy thin film as catalyst in Sonogashira coupling reaction. Appl Organomet Chem 2016. [DOI: 10.1002/aoc.3675] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- S. Jafar Hoseini
- Department of Chemistry, Faculty of Sciences; Yasouj University; Yasouj 7591874831 Iran
| | - Nahal Aramesh
- 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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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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18
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Han YH, Won JY, Yoo HS, Kim JH, Choi R, Jeong JK. High Performance Metal Oxide Field-Effect Transistors with a Reverse Offset Printed Cu Source/Drain Electrode. ACS APPLIED MATERIALS & INTERFACES 2016; 8:1156-1163. [PMID: 26716349 DOI: 10.1021/acsami.5b08969] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Nonvacuum and photolithography-free copper (Cu) films were prepared by reverse offset printing. The mechanical, morphological, structural, and chemical properties of the Cu films annealed at different temperatures were examined in detail. The Ostwald ripening-induced coalescence and grain growth in the printing Cu films were enhanced with increasing annealing temperature in N2 ambient up to 400 °C. Simultaneously, unwanted chemical impurities such as oxygen, hydrogen, and carbon in the Cu films decreased as the annealing temperature increased. The high electrical conductivity (∼6.2 μΩ·cm) of the printing Cu films annealed at 400 °C is attributed to the enlargement of the grain size and reduction of the incorporation of impurities. A printing Cu film was adopted as a source/drain (S/D) electrode in solution processable zinc tin oxide (ZTO) field-effect transistors (FETs), where the ZTO film was prepared by simple spin-coating. The ZTO FETs fabricated at a contact annealing temperature of 250 °C exhibited a promising field-effect mobility of 2.6 cm(2)/(V s), a threshold voltage of 7.0 V, and an ION/OFF modulation ratio of 2 × 10(5).
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Affiliation(s)
- Young Hun Han
- Department of Materials Science and Engineering, Inha University , Incheon 402-751, South Korea
| | - Ju-Yeon Won
- Department of Materials Science and Engineering, Inha University , Incheon 402-751, South Korea
| | - Hyun-Seok Yoo
- Advanced Research Institute, Dongjin Semichem Co. Ltd., Gyeonggi 463-400, South Korea
| | - Jae-Hyun Kim
- Advanced Research Institute, Dongjin Semichem Co. Ltd., Gyeonggi 463-400, South Korea
| | - Rino Choi
- Department of Materials Science and Engineering, Inha University , Incheon 402-751, South Korea
| | - Jae Kyeong Jeong
- Department of Electronic Engineering, Hanyang University , Seoul 133-791, South Korea
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19
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Gentzen M, Habicht W, Doronkin DE, Grunwaldt JD, Sauer J, Behrens S. Bifunctional hybrid catalysts derived from Cu/Zn-based nanoparticles for single-step dimethyl ether synthesis. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01043h] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Model kit for bifunctional catalysts: colloidal Cu/Zn-based nanoparticles were synthesized and used as building blocks in syngas to dimethyl ether (STD) catalysts.
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Affiliation(s)
- M. Gentzen
- Institute of Catalysis Research and Technology
- Karlsruhe Institute of Technology (KIT)
- Germany
| | - W. Habicht
- Institute of Catalysis Research and Technology
- Karlsruhe Institute of Technology (KIT)
- Germany
| | - D. E. Doronkin
- Institute of Catalysis Research and Technology
- Karlsruhe Institute of Technology (KIT)
- Germany
- Institute for Chemical Technology and Polymer Chemistry
- Karlsruhe Institute of Technology (KIT)
| | - J.-D. Grunwaldt
- Institute of Catalysis Research and Technology
- Karlsruhe Institute of Technology (KIT)
- Germany
- Institute for Chemical Technology and Polymer Chemistry
- Karlsruhe Institute of Technology (KIT)
| | - J. Sauer
- Institute of Catalysis Research and Technology
- Karlsruhe Institute of Technology (KIT)
- Germany
| | - S. Behrens
- Institute of Catalysis Research and Technology
- Karlsruhe Institute of Technology (KIT)
- Germany
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20
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García-Trenco A, White ER, Shaffer MSP, Williams CK. A one-step Cu/ZnO quasi-homogeneous catalyst for DME production from syn-gas. Catal Sci Technol 2016. [DOI: 10.1039/c5cy01994j] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Colloidal Cu/ZnO nanoparticles combine with γ-Al2O3 to form promising hybrid catalysts for the direct synthesis of dimethyl ether (DME) in liquid phase, showing high activity, selectivity and stability.
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Affiliation(s)
| | - E. R. White
- Department of Chemistry
- Imperial College London
- London
- UK
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21
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Hoseini SJ, Fath RH. Formation of nanoneedle Cu(0)/CuS nanohybrid thin film by the disproportionation of a copper(i) complex at an oil–water interface and its application for dye degradation. RSC Adv 2016. [DOI: 10.1039/c6ra14995b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
A toluene–water planar interface has been used as an ideal template for the self-assembly of a nanoneedle Cu(0)/CuS nanohybrid thin film and Cu(0)/CuS nanoneedles as efficient catalysts for dye degradation.
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Affiliation(s)
- S. Jafar Hoseini
- Department of Chemistry
- Faculty of Sciences
- Yasouj University
- Yasouj 7591874831
- Iran
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22
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Brown NJ, García-Trenco A, Weiner J, White ER, Allinson M, Chen Y, Wells PP, Gibson EK, Hellgardt K, Shaffer MSP, Williams CK. From Organometallic Zinc and Copper Complexes to Highly Active Colloidal Catalysts for the Conversion of CO2 to Methanol. ACS Catal 2015. [DOI: 10.1021/cs502038y] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Neil J. Brown
- Department
of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom
| | - Andrés García-Trenco
- Department
of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom
| | - Jonathan Weiner
- Department
of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom
| | - Edward R. White
- Department
of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom
| | - Matthew Allinson
- Department
of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom
| | - Yuxin Chen
- Department
of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom
| | - Peter P. Wells
- The UK Catalysis
Hub, Research Complex at Harwell, Harwell, Oxon OX11 0FA, United Kingdom
- Kathleen Lonsdale Building,
Department of Chemistry, University College London, Gordon Street, London WC1H 0AJ, United Kingdom
| | - Emma K. Gibson
- The UK Catalysis
Hub, Research Complex at Harwell, Harwell, Oxon OX11 0FA, United Kingdom
- Kathleen Lonsdale Building,
Department of Chemistry, University College London, Gordon Street, London WC1H 0AJ, United Kingdom
| | - Klaus Hellgardt
- Department
of Chemical Engineering, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom
| | - Milo S. P. Shaffer
- Department
of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom
| | - Charlotte K. Williams
- Department
of Chemistry, Imperial College London, South Kensington, London SW7 2AZ, United Kingdom
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23
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Aslan E, Patir IH, Ersoz M. Cu Nanoparticles Electrodeposited at Liquid-Liquid Interfaces: A Highly Efficient Catalyst for the Hydrogen Evolution Reaction. Chemistry 2015; 21:4585-9. [DOI: 10.1002/chem.201406615] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2014] [Indexed: 11/10/2022]
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24
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25
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Wang J, Wang K, Wang FB, Xia XH. Bioinspired copper catalyst effective for both reduction and evolution of oxygen. Nat Commun 2014; 5:5285. [PMID: 25335848 DOI: 10.1038/ncomms6285] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2014] [Accepted: 09/15/2014] [Indexed: 12/27/2022] Open
Abstract
In many green electrochemical energy devices, the conversion between oxygen and water suffers from high potential loss due to the difficulty in decreasing activation energy. Overcoming this issue requires full understanding of global reactions and development of strategies in efficient catalyst design. Here we report an active copper nanocomposite, inspired by natural coordination environments of catalytic sites in an enzyme, which catalyzes oxygen reduction/evolution at potentials closely approaching standard potential. Such performances are related to the imperfect coordination configuration of the copper(II) active site whose electron density is tuned by neighbouring copper(0) and nitrogen ligands incorporated in graphene. The electron transfer number of oxygen reduction is estimated by monitoring the redox of hydrogen peroxide, which is determined by the overpotential and electrolyte pH. An in situ fluorescence spectroelectrochemistry reveals that hydroxyl radical is the common intermediate for the electrochemical conversion between oxygen and water.
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Affiliation(s)
- Jiong Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, 22 Hankou Road, Nanjing 210093, China
| | - Kang Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, 22 Hankou Road, Nanjing 210093, China
| | - Feng-Bin Wang
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, 22 Hankou Road, Nanjing 210093, China
| | - Xing-Hua Xia
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, 22 Hankou Road, Nanjing 210093, China
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26
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Silverwood IP, Keyworth CW, Brown NJ, Shaffer MSP, Williams CK, Hellgardt K, Kelsall GH, Kazarian SG. An attenuated total reflection Fourier transform infrared (ATR FT-IR) spectroscopic study of gas adsorption on colloidal stearate-capped ZnO catalyst substrate. APPLIED SPECTROSCOPY 2014; 68:88-94. [PMID: 24405958 DOI: 10.1366/13-07174] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Attenuated total reflection Fourier transform infrared (ATR FT-IR) spectroscopy has been applied in situ to study gas adsorption on a colloidal stearate-capped zinc oxide (ZnO) surface. Infrared spectra of a colloidal stearate-capped ZnO catalyst substrate were assigned at room temperature using zinc stearate as a reference compound. Heating was shown to create a monodentate species that allowed conformational change to occur, leading to altered binding geometry of the stearate ligands upon cooling. CO2 and H2 adsorption measurements demonstrated that the ligand shell was permeable and did not cover the entire surface, allowing adsorption and reaction with at least some portion of the ZnO surface. It has been demonstrated that stearate ligands did not prevent the usual chemisorption processes involved in catalytic reactions on a model ZnO catalyst system, yet the ligand-support system is dynamic under representative reaction conditions.
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Affiliation(s)
- Ian P Silverwood
- Department of Chemical Engineering, Imperial College London, South Kensington Campus, London SW7 2AZ, UK
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27
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Lignier P, Bellabarba R, Tooze RP. Scalable strategies for the synthesis of well-defined copper metal and oxidenanocrystals. Chem Soc Rev 2012; 41:1708-20. [DOI: 10.1039/c1cs15223h] [Citation(s) in RCA: 134] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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28
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Sliem MA, Turner S, Heeskens D, Kalidindi SB, Tendeloo GV, Muhler M, Fischer RA. Preparation, microstructure characterization and catalytic performance of Cu/ZnO and ZnO/Cu composite nanoparticles for liquid phase methanol synthesis. Phys Chem Chem Phys 2012; 14:8170-8. [DOI: 10.1039/c2cp40482f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Liu Z, Rittermeier A, Becker M, Kähler K, Löffler E, Muhler M. High-pressure CO adsorption on Cu-based catalysts: Zn-induced formation of strongly bound CO monitored by ATR-IR spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:4728-4733. [PMID: 21438509 DOI: 10.1021/la2000766] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
CO adsorption at 1 MPa on Cu-Zn stearate colloids and supported Cu catalysts was studied in situ by attenuated total reflection infrared (ATR-IR) spectroscopy. Subsequent to thorough reduction by H(2), the IR band at 2110-2070 cm(-1) due to linearly adsorbed CO on clean metallic Cu was always observed initially on all Cu catalysts. During the exposure of Zn-containing samples to CO at high pressure, a new IR band at ca. 1975 cm(-1) appeared in addition and increased in intensity even at room temperature. The detailed analysis of the IR spectra showed that the new IR band at ca. 1975 cm(-1) was not related to coadsorbed carbonate/formate-like species, but to the content of Zn in the samples. This IR band was found to be more stable than that at 2110-2070 cm(-1) during purging with inert gas. It disappeared quickly in synthetic air, pointing to a strongly reduced state of the Zn-containing Cu catalysts achieved during high-pressure CO exposure. It is suggested that CO can reduce ZnO to Zn in the presence of Cu, resulting in the formation of a CuZn(x) surface alloy. As the CO species with the characteristic IR band at ca. 1975 cm(-1) binds more strongly to this CuZn(x) alloy than the linearly adsorbed CO to pure Cu, it is suggested to be adsorbed on a bridge site.
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Affiliation(s)
- Zhimin Liu
- Laboratory of Industrial Chemistry, Ruhr-University Bochum, Universitätsstr. 150, D-44780 Bochum, Germany
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30
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Schimpf S, Rittermeier A, Zhang X, Li ZA, Spasova M, van den Berg M, Farle M, Wang Y, Fischer R, Muhler M. Stearate-Based Cu Colloids in Methanol Synthesis: Structural Changes Driven by Strong Metal-Support Interactions. ChemCatChem 2010. [DOI: 10.1002/cctc.200900252] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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