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Lasemi N, Wicht T, Bernardi J, Liedl G, Rupprechter G. Defect-Rich CuZn Nanoparticles for Model Catalysis Produced by Femtosecond Laser Ablation. ACS APPLIED MATERIALS & INTERFACES 2024; 16:38163-38176. [PMID: 38934369 DOI: 10.1021/acsami.4c07766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
Femtosecond laser ablation of Cu0.70Zn0.30 targets in ethanol led to the formation of periodic surface nanostructures and crystalline CuZn alloy nanoparticles with defects, low-coordinated surface sites, and, controlled by the applied laser fluence, different sizes and elemental composition. The Cu/Zn ratio of the nanoparticles was determined by energy dispersive X-ray spectroscopy, X-ray photoelectron spectroscopy, and selected area electron diffraction. The CuZn nanoparticles were about 2-3 nm in size, and Cu-rich, varying between 70 and 95%. Increasing the laser fluence from 1.6 to 3.2 J cm-2 yielded larger particles, more stacking fault defects, and repeated nanotwinning, as evident from high-resolution transmission electron microscopy, aided by (inverse) fast Fourier transform analysis. This is due to the higher plasma temperature, leading to increased random collisions/diffusion of primary nanoparticles and their incomplete ordering due to immediate solidification typical of ultrashort pulses. The femtosecond laser-synthesized often nanotwinned CuZn nanoparticles were supported on highly oriented pyrolytic graphite and applied for ethylene hydrogenation, demonstrating their promising potential as model catalysts. Nanoparticles produced at 3.2 J cm-2 exhibited lower catalytic activity than those made at 2.7 J cm-2. Presumably, agglomeration/aggregation of especially 2-3 nm sized nanoparticles, as observed by postreaction analysis, resulted in a decrease in the surface area to volume ratio and thus in the number of low-coordinated active sites.
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Affiliation(s)
- Niusha Lasemi
- Institute of Materials Chemistry, TU Wien, 1060 Wien, Austria
| | - Thomas Wicht
- Institute of Materials Chemistry, TU Wien, 1060 Wien, Austria
| | - Johannes Bernardi
- University Service Center for Transmission Electron Microscopy, TU Wien, 1020 Wien, Austria
| | - Gerhard Liedl
- Institute of Production Engineering and Photonic Technologies, TU Wien, 1060 Wien, Austria
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2
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Mosaferi M, Céolin D, Rueff JP, Selles P, Odelius M, Björneholm O, Öhrwall G, Carniato S. Fingerprint of Dipole Moment Orientation of Water Molecules in Cu 2+ Aqueous Solution Probed by X-ray Photoelectron Spectroscopy. J Am Chem Soc 2024; 146:9836-9850. [PMID: 38545903 DOI: 10.1021/jacs.3c14570] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
The electronic structure and geometrical organization of aqueous Cu2+ have been investigated by using X-ray photoelectron spectroscopy (XPS) at the Cu L-edge combined with state-of-the-art ab initio molecular dynamics and a quantum molecular approach designed to simulate the Cu 2p X-ray photoelectron spectrum. The calculations offer a comprehensive insight into the origin of the main peak and satellite features. It is illustrated how the energy drop of the Cu 3d levels (≈7 eV) following the creation of the Cu 2p core hole switches the nature of the highest singly occupied molecular orbitals (MOs) from the dominant metal to the dominant MO nature of water. It is particularly revealed how the repositioning of the Cu 3d levels induces the formation of new bonding (B) and antibonding (AB) orbitals, from which shakeup mechanisms toward the relaxed H-SOMO operate. As highlighted in this study, the appearance of the shoulder near the main peak corresponds to the characteristic signature of shakeup intraligand (1a1 → H-SOMO(1b1)) excitations in water, providing insights into the average dipole moment distribution (≈36°) of the first-shell water molecules surrounding the metal ion and its direct impact on the broadening of the satellite. It is also revealed that the main satellite at 8 eV from the main peak corresponds to (metal/1b2 → H-SOMO(1b1) of water) excitations due to a bonding/antibonding (B/AB) interaction of Cu 3d levels with the deepest valence O2p/H1s 1b2 orbitals of water. This finding underscores the sensitivity of XPS to the electronic structure and orientation of the nearest water molecules around the central ion.
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Affiliation(s)
- Mohammadreza Mosaferi
- Laboratoire de Chimie Physique, Matière et Rayonnement, UMR 7614, Sorbonne Université, 4 Place Jussieu, 75231 Paris Cedex 05, France
| | - Denis Céolin
- Synchrotron SOLEIL, L'Orme des Merisiers, BP 48, St Aubin, 91192 Gif sur Yvette, France
| | - Jean-Pascal Rueff
- Synchrotron SOLEIL, L'Orme des Merisiers, BP 48, St Aubin, 91192 Gif sur Yvette, France
| | - Patricia Selles
- Laboratoire de Chimie Physique, Matière et Rayonnement, UMR 7614, Sorbonne Université, 4 Place Jussieu, 75231 Paris Cedex 05, France
| | - Michael Odelius
- Department of Physics, Stockholm University, AlbaNova University Center, 106 91 Stockholm, Sweden
| | - Olle Björneholm
- Department of Physics and Astronomy, Uppsala University, Box 516, SE-75120 Uppsala, Sweden
| | - Gunnar Öhrwall
- MAX IV Laboratory, Lund University, Box 118, SE-22100 Lund, Sweden
| | - Stéphane Carniato
- Laboratoire de Chimie Physique, Matière et Rayonnement, UMR 7614, Sorbonne Université, 4 Place Jussieu, 75231 Paris Cedex 05, France
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3
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Sabbouh M, Nikitina A, Rogacheva E, Nebalueva A, Shilovskikh V, Sadovnichii R, Koroleva A, Nikolaev K, Kraeva L, Ulasevich S, Skorb E. Sonochemical fabrication of gradient antibacterial materials based on Cu-Zn alloy. ULTRASONICS SONOCHEMISTRY 2023; 92:106247. [PMID: 36508894 PMCID: PMC9763737 DOI: 10.1016/j.ultsonch.2022.106247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 11/20/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
At present research, we highlight ultrasonic treatment as a new way to create materials with a gradient change of chemical or physical properties. We demonstrate the possibility to fabricate novel materials with biocide activity based on simple and cheap Cu-Zn alloy. In this research, we propose a green preparative technique for the sonication of an alloy in an alkali solution. The method leads to a significant visual change and differentiation of particles into three different fractions. Due to the chemical micro gradients in media near the solid surface under intensive sonication, fast formation of specific functional groups occurs on the particles' surface. The particles were studied X-ray diffraction analysis (XRD) analysis, the field-emission scanning electron microscope (SEM) as well as electron backscatter diffraction (EBSD) mode, X-ray Photoelectron Spectroscopy (XPS), the differential pulse anodic stripping voltammetry (DPASV) technique. A strong correlation of both methods proves a redistribution of copper ions from Fraction I to Fraction III that influence for the antibacterial properties of the prepared material. The different biocidal activity was demonstrated for each separated Fraction that could be related to their different phase content and ability to release the different types of ions.
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Affiliation(s)
- Mirna Sabbouh
- ITMO University, 9 Lomonosova Street, 191002 St. Petersburg, Russia
| | - Anna Nikitina
- ITMO University, 9 Lomonosova Street, 191002 St. Petersburg, Russia
| | - Elizaveta Rogacheva
- Pasteur Institute of Epidemiology and Microbiology, 14 Mira Street, Saint Petersburg 197101, Russia
| | - Anna Nebalueva
- ITMO University, 9 Lomonosova Street, 191002 St. Petersburg, Russia
| | - Vladimir Shilovskikh
- ITMO University, 9 Lomonosova Street, 191002 St. Petersburg, Russia; Saint-Petersburg State University, Russia
| | | | | | | | - Lyudmila Kraeva
- Pasteur Institute of Epidemiology and Microbiology, 14 Mira Street, Saint Petersburg 197101, Russia
| | | | - Ekaterina Skorb
- ITMO University, 9 Lomonosova Street, 191002 St. Petersburg, Russia
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4
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Room-temperature fabrication of a heterostructure Cu2O@CuO nanosheet electrocatalyst for non-enzymatic detection of glucose and H2O2. J Electroanal Chem (Lausanne) 2022. [DOI: 10.1016/j.jelechem.2022.116874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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5
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Mosaferi M, Selles P, Miteva T, Ferté A, Carniato S. Interpretation of Shakeup Mechanisms in Copper L-Shell Photoelectron Spectra. J Phys Chem A 2022; 126:4902-4914. [PMID: 35861575 DOI: 10.1021/acs.jpca.2c01870] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report on an original full ab initio quantum molecular approach designed to simulate Cu 2p X-ray photoelectron spectra. The description includes electronic relaxation/correlation and spin-orbit coupling effects and is implemented within nonorthogonal sets of molecular orbitals for the initial and final states. The underlying mechanism structuring the Cu 2p photoelectron spectra is clarified thanks to a correlation diagram applied to the CuO4C6H6 paradigm. This diagram illustrates how the energy drop of the Cu 3d levels following the creation of the Cu 2p core hole switches the nature of the highest singly occupied molecular orbital (H-SOMO) from dominant metal to dominant ligand character. It also reveals how the repositioning of the Cu 3d levels induces the formation of new bonding and antibonding orbitals from which shakeup mechanisms toward the relaxed H-SOMO operate. The specific nature, ligand → ligand and metal → ligand, of these excitations building the satellite lines is exposed. Our approach finally applied to the real Cu(acac)2 system clearly demonstrates how a definite interpretation of the XPS spectra can be obtained when a correct evaluation of binding energies, intensities, and relative widths of the spectral lines is achieved.
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Affiliation(s)
- M Mosaferi
- Laboratoire de Chimie Physique-Matière et Rayonnement (LCPMR), UMR 7614, CNRS, Sorbonne Université, 75005 Paris, France
| | - P Selles
- Laboratoire de Chimie Physique-Matière et Rayonnement (LCPMR), UMR 7614, CNRS, Sorbonne Université, 75005 Paris, France
| | - T Miteva
- Laboratoire de Chimie Physique-Matière et Rayonnement (LCPMR), UMR 7614, CNRS, Sorbonne Université, 75005 Paris, France
| | - A Ferté
- Laboratoire de Chimie Physique-Matière et Rayonnement (LCPMR), UMR 7614, CNRS, Sorbonne Université, 75005 Paris, France
| | - S Carniato
- Laboratoire de Chimie Physique-Matière et Rayonnement (LCPMR), UMR 7614, CNRS, Sorbonne Université, 75005 Paris, France
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Proniewicz E, Starowicz M, Ozaki Y. Determination of the Influence of Various Factors on the Character of Surface Functionalization of Copper(I) and Copper(II) Oxide Nanosensors with Phenylboronic Acid Derivatives. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:557-568. [PMID: 34933549 PMCID: PMC8757468 DOI: 10.1021/acs.langmuir.1c02990] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 12/08/2021] [Indexed: 06/14/2023]
Abstract
In this work, we attempt to determine the influence of the oxidation state of copper [Cu(I) vs Cu(II)], the nature of the interface (solid/aqueous vs solid/air), the incubation time, and the structure of N-substituted phenylboronic acids (PBAs) functionalizing the surface of copper oxide nanostructures (NSs) on the mode of adsorption. For this purpose, 4-[(N-anilino)(phosphono)-S-methyl]phenylboronic acid (1-PBA) and its two analogues (2-PBA and bis{1-PBA}) and the copper oxide NSs were synthesized in a surfactant-/ion-free solution via a synthetic route that allows controlling the size and morphology of NSs. The NSs were characterized by scanning electron microscopy, ultraviolet-visible spectroscopy, Raman spectroscopy, and X-ray diffraction, which confirmed the formation of spherical Cu2O nanoparticles (Cu2ONPs) with a size of 1.5 μm to 600 nm crystallized in a cubic cuprite structure and leaf-like CuO nanostructures (CuONSs) with dimensions of 80-180 nm in width and 400-700 nm in length and crystallized in a monoclinic structure. PBA analogues were deposited on the surface of the copper oxide NSs, and adsorption was investigated using surface-enhanced Raman spectroscopy (SERS). The changes in the orientation of the molecule relative to the substrate surface caused by the abovementioned factors were described, and the signal enhancement on the copper oxide NSs was determined. This is the first study using vibrational spectroscopy for these compounds.
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Affiliation(s)
- Edyta Proniewicz
- Faculty
of Foundry Engineering, AGH University of
Science and Technology, ul. Reymonta 23, 30-059 Krakow, Poland
- School
of Biological and Environmental Sciences, Kwansei Gakuin University, 2-1, Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Maria Starowicz
- Faculty
of Foundry Engineering, AGH University of
Science and Technology, ul. Reymonta 23, 30-059 Krakow, Poland
| | - Yukihiro Ozaki
- School
of Biological and Environmental Sciences, Kwansei Gakuin University, 2-1, Gakuen, Sanda, Hyogo 669-1337, Japan
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7
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Wang X, Brunson K, Xie H, Colliard I, Wasson MC, Gong X, Ma K, Wu Y, Son FA, Idrees KB, Zhang X, Notestein JM, Nyman M, Farha OK. Heterometallic Ce IV/ V V Oxo Clusters with Adjustable Catalytic Reactivities. J Am Chem Soc 2021; 143:21056-21065. [PMID: 34873904 DOI: 10.1021/jacs.1c11208] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Heterometallic CeIV/M oxo clusters are underexplored yet and can benefit from synergistic properties from combining cerium and other metal cations to produce efficient redox catalysts. Herein, we designed and synthesized a series of new Ce12V6 oxo clusters with different capping ligands: Ce12V6-SO4, Ce12V6-OTs (OTs: toluenesulfonic acid), and Ce12V6-NBSA (NBSA: nitrobenzenesulfonic acid). Single crystal X-ray diffraction (SCXRD) for all three structures reveals a Ce12V6 cubane core formulated [Ce12(VO)6O24]18+ with cerium on the edges of the cube, vanadyl capping the faces, and sulfate on the corners. While infrared spectroscopy (IR), ultraviolet-visible spectroscopy (UV-vis), electrospray ionization mass spectrometry (ESI-MS), and proton nuclear magnetic resonance (1H NMR) proved the successful coordination of the organic ligands to the Ce12V6 core, liquid phase 51V NMR and small-angle X-ray scattering (SAXS) confirmed the integrity of the clusters in the organic solutions. Furthermore, functionalization of the Ce12V6 core with organic ligands both provides increased solubility in term of homogeneous application and introduces porosity to the assemblies of Ce12V6-OTs and Ce12V6-NBSA in term of heterogeneous application, thus allowing more catalytic sites to be accessible and improving reactivity as compared to the nonporous and less soluble Ce12V6-SO4. Meanwhile, the coordinated ligands also influenced the electronic environment of the catalytic sites, in turn affecting the reactivity of the cluster, which we probed by the selective oxidation of 2-chloroethyl ethyl sulfide (CEES). This work provides a strategy to make full use of the catalytic sites within a class of inorganic sulfate capped clusters via organic ligand introduction.
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Affiliation(s)
- Xingjie Wang
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Kieran Brunson
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Haomiao Xie
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Ian Colliard
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Megan C Wasson
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Xinyi Gong
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Kaikai Ma
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Yufang Wu
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Florencia A Son
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Karam B Idrees
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Xuan Zhang
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Justin M Notestein
- Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - May Nyman
- Department of Chemistry, Oregon State University, Corvallis, Oregon 97331, United States
| | - Omar K Farha
- International Institute for Nanotechnology and Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States.,Department of Chemical and Biological Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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8
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Fellenberg AK, Addad A, Hong J, Simon P, Kosto Y, Šmíd B, Ji G, Khodakov AY. Iron and copper nanoparticles inside and outside carbon nanotubes: Nanoconfinement, migration, interaction and catalytic performance in Fischer-Tropsch synthesis. J Catal 2021. [DOI: 10.1016/j.jcat.2021.09.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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9
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Mojtahedi S, Serrapede M, Lamberti A, Pirri CF, Heydari-Bafrooei E, Molaei M, Karimipour M. A facile, safe and controllable morphology synthesis of rGO_Cu2O nanocomposite as a binder-free electrode for electrochemical capacitors. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138856] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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10
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Deerattrakul V, Chukchuan A, Thepphankulngarm N, Pornjaturawit J, Vacharameteevoranun N, Chaisuwan T, Kongkachuichay P. Carbon dioxide hydrogenation to methanol over polybenzoxazine-based mesocarbon supported Cu–Zn catalyst. NEW J CHEM 2021. [DOI: 10.1039/d1nj01475g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Direct methanol production over Cu–Zn/polybenzoxazine-based mesocarbon catalyst.
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Affiliation(s)
- Varisara Deerattrakul
- Department of Chemical Engineering
- Faculty of Engineering
- and Research Network of NANOTEC-KU on NanoCatalysts and NanoMaterials Sustainable Energy and Environment
- Kasetsart University
- Bangkok 10900
| | - Anurak Chukchuan
- Department of Chemical Engineering
- Faculty of Engineering
- and Research Network of NANOTEC-KU on NanoCatalysts and NanoMaterials Sustainable Energy and Environment
- Kasetsart University
- Bangkok 10900
| | - Nattanida Thepphankulngarm
- Department of Chemical Engineering
- Faculty of Engineering
- and Research Network of NANOTEC-KU on NanoCatalysts and NanoMaterials Sustainable Energy and Environment
- Kasetsart University
- Bangkok 10900
| | - Jirayu Pornjaturawit
- Department of Chemical Engineering
- Faculty of Engineering
- and Research Network of NANOTEC-KU on NanoCatalysts and NanoMaterials Sustainable Energy and Environment
- Kasetsart University
- Bangkok 10900
| | - Napas Vacharameteevoranun
- Department of Chemical Engineering
- Faculty of Engineering
- and Research Network of NANOTEC-KU on NanoCatalysts and NanoMaterials Sustainable Energy and Environment
- Kasetsart University
- Bangkok 10900
| | - Thanyalak Chaisuwan
- The Petroleum and Petrochemical College
- Chulalongkorn University
- Bangkok 10330
- Thailand
- Center of Excellence on Petrochemical and Materials Technology
| | - Paisan Kongkachuichay
- Department of Chemical Engineering
- Faculty of Engineering
- and Research Network of NANOTEC-KU on NanoCatalysts and NanoMaterials Sustainable Energy and Environment
- Kasetsart University
- Bangkok 10900
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Abstract
CoFe2O4 prepared by sol-gel has been examined with respect to its catalytic performance for preferential CO oxidation in a H2-rich stream. In turn, the promoting effects of incorporation of Ce, Co, Cu, and Zr by impregnation on the surface of CoFe2O4 on the process are examined as well. The catalysts have been characterized by N2 adsorption, X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), temperature programmed reduction (TPR), and X-ray photoelectron spectra (XPS), as well as diffuse reflectance infrared DRIFTS under reaction conditions with the aim of establishing structure/activity relationships for the mentioned catalyst/process. It is shown that while the presence of the various metals on CoFe2O4 hinders a low temperature CO oxidation process, it appreciably enhances the activity above 125 °C. This is basically attributed to the surface modifications, i.e. cobalt oxidation, induced in CoFe2O4 upon introduction of the metals. In turn, no methanation activity is observed in any case except for the copper-containing catalyst, in which achievement of reduced states of cobalt appears most favored.
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One-step hydrothermal synthesis of Cu2O/CuO hollow microspheres/reduced graphene oxide hybrid with enhanced sensitivity for non-enzymatic glucose sensing. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125076] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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13
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Jurković DL, Prašnikar A, Pohar A, Likozar B. Surface structure-based CO2 reduction reaction modelling over supported copper catalysts. J CO2 UTIL 2020. [DOI: 10.1016/j.jcou.2020.101234] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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14
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Jiang A, Shao H, Zhu L, Ma S, Xiao J. Preparation of Copper Nitride Films with Superior Photocatalytic Activity through Magnetron Sputtering. MATERIALS 2020; 13:ma13194325. [PMID: 32998445 PMCID: PMC7579649 DOI: 10.3390/ma13194325] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 09/19/2020] [Accepted: 09/25/2020] [Indexed: 11/16/2022]
Abstract
TiO2 possesses a wide forbidden band of about 3.2 eV, which severely limits its visible light absorption efficiency. In this work, copper nitride (Cu3N) films were prepared by magnetron sputtering at different gas flow ratios. The structure of the films was tested by scanning electron microscope, X-ray diffractometer, and X-ray photoelectron spectroscope. Optical properties were investigated by UV-vis spectrophotometer and fluorescence spectrometer. Results show that the Cu3N crystal possesses a typical anti-ReO3 crystal structure, and the ratio of nitrogen and Cu atoms of the Cu3N films was adjusted by changing the gas flow ratio. The Cu3N films possess an optical band gap of about 2.0 eV and energy gap of about 2.5 eV and exhibit excellent photocatalytic activity for degrading methyl orange (degradation ratio of 99.5% in 30 min). The photocatalytic activity of Cu3N mainly originates from vacancies in the crystal and Cu self-doping. This work provides a route to broaden the forbidden band width of photocatalytic materials and increase their photoresponse range.
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Affiliation(s)
- Aihua Jiang
- College of Science, Guilin University of Technology, Guilin 541004, China; (A.J.); (H.S.); (L.Z.)
| | - Hongjuan Shao
- College of Science, Guilin University of Technology, Guilin 541004, China; (A.J.); (H.S.); (L.Z.)
| | - Liwen Zhu
- College of Science, Guilin University of Technology, Guilin 541004, China; (A.J.); (H.S.); (L.Z.)
| | - Songshan Ma
- School of Physics and Electronics, Central South University, Changsha 410083, China;
| | - Jianrong Xiao
- College of Science, Guilin University of Technology, Guilin 541004, China; (A.J.); (H.S.); (L.Z.)
- School of Physics and Electronics, Central South University, Changsha 410083, China;
- Correspondence:
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15
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Electrochemical immunosensor with Cu(I)/Cu(II)-chitosan-graphene nanocomposite-based signal amplification for the detection of newcastle disease virus. Sci Rep 2020; 10:13869. [PMID: 32807824 PMCID: PMC7431565 DOI: 10.1038/s41598-020-70877-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 05/12/2020] [Indexed: 12/20/2022] Open
Abstract
An electrochemical immunoassay for the ultrasensitive detection of Newcastle disease virus (NDV) was developed using graphene and chitosan-conjugated Cu(I)/Cu(II) (Cu(I)/Cu(II)-Chi-Gra) for signal amplification. Graphene (Gra) was used for both the conjugation of an anti-Newcastle disease virus monoclonal antibody (MAb/NDV) and the immobilization of anti-Newcastle disease virus polyclonal antibodies (PAb/NDV). Cu(I)/Cu(II) was selected as an electroactive probe, immobilized on a chitosan-graphene (Chi-Gra) hybrid material, and detected by differential pulse voltammetry (DPV) after a sandwich-type immune response. Because Gra had a large surface area, many antibodies were loaded onto the electrochemical immunosensor to effectively increase the electrical signal. Additionally, the introduction of Gra significantly increased the loading amount of electroactive probes (Cu(I)/Cu(II)), and the electrical signal was further amplified. Cu(I)/Cu(II) and Cu(I)/Cu(II)-Chi-Gra were compared in detail to characterize the signal amplification ability of this platform. The results showed that this immunosensor exhibited excellent analytical performance in the detection of NDV in the concentration range of 100.13 to 105.13 EID50/0.1 mL, and it had a detection limit of 100.68 EID50/0.1 mL, which was calculated based on a signal-to-noise (S/N) ratio of 3. The resulting immunosensor also exhibited high sensitivity, good reproducibility and acceptable stability.
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16
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X-ray absorption spectroscopy principles and practical use in materials analysis. PHYSICAL SCIENCES REVIEWS 2020. [DOI: 10.1515/psr-2017-0181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractThe X-ray Absorption Fine Structure (XAFS) with its subregions X-ray Absorption Near-edge Structure (XANES) and Extended X-ray Absorption Fine Structure (EXAFS) is a powerful tool for the structural analysis of materials, which is nowadays a standard component of research strategies in many fields. This review covers a wide range of topics related to its measurement and use: the origin of the fine structure, its analytical potential, derived from the physical basis, the environment for measuring XAFS at synchrotrons, including different measurement geometries, detection modes, and sample environments, e. g. for in-situ and operando work, the principles of data reduction, analysis, and interpretation, and a perspective on new methods for structure analysis combining X-ray absorption with X-ray emission. Examples for the application of XAFS have been selected from work with heterogeneous catalysts with the intention to demonstrate the strength of the method providing structural information about highly disperse and disordered systems, to illustrate pitfalls in the interpretation of results (e. g. by neglecting the averaged character of the information obtained) and to show how its merits can be further enhanced by combination with other methods of structural analysis and/or spectroscopy.
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Ni/cerium Molybdenum Oxide Hydrate Microflakes Composite Coatings Electrodeposited From Choline Chloride: Ethylene Glycol Deep Eutectic Solvent. MATERIALS 2020; 13:ma13040924. [PMID: 32092998 PMCID: PMC7078612 DOI: 10.3390/ma13040924] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2020] [Revised: 02/16/2020] [Accepted: 02/17/2020] [Indexed: 11/16/2022]
Abstract
Cerium molybdenum oxide hydrate microflakes are codeposited with nickel from a deep eutectic solvent-based bath. During seven days of exposure in 0.05 M NaCl solution, the corrosion resistance of composite coating (Ni/CeMoOxide) is slightly reduced, due to the existence of some microcracks caused by large microflakes. Multielemental analysis of the solution, in which coatings are exposed and the qualitative changes in the surface chemistry (XPS) show selective etching molybdenum from microflakes. The amount of various molybdenum species within the surface of coating nearly completely disappear, due to the corrosion process. Significant amounts of Ce3+ compounds are removed, however the corrosion process is less selective towards the cerium, and the overall cerium chemistry remains unchanged. Initially, blank Ni coatings are covered by NiO and Ni(OH)2 in an atomic ratio of 1:2. After exposure, the amount of Ni(OH)2 increases in relation to NiO (ratio 1:3). For the composite coating, the atomic ratios of both forms of nickel vary from 1:0.8 to 1:1.3. Despite achieving lower corrosion resistance of the composite coating, the applied concept of using micro-flakes, whose skeleton is a system of Ce(III) species and active form are molybdate ions, may be interesting for applications in materials with potential self-healing properties.
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18
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He S, Wang W, Shen Z, Li G, Kang J, Liu Z, Wang GC, Zhang Q, Wang Y. Carbon nanotube-supported bimetallic Cu-Fe catalysts for syngas conversion to higher alcohols. MOLECULAR CATALYSIS 2019. [DOI: 10.1016/j.mcat.2019.110610] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Hou C, Cao L, Li Y, Tang F, Song X. Hierarchical nanostructured W-Cu composite with outstanding hardness and wear resistance. NANOTECHNOLOGY 2019; 31:084003. [PMID: 31689689 DOI: 10.1088/1361-6528/ab548f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Hierarchical nanostructured W-Cu composite with an average W size below 200 nm and nanocrystalline structure inside the W phase was obtained by refining the inner structure of the initial ultrafine powders combined with high-pressure spark plasma sintering. It revealed that an atomic scale combination can be formed at both the W grain boundaries and W/Cu interfaces. Accordingly, the nanostructured W-Cu composite exhibits twofold hardness and greatly improved wear resistance with satisfactory electrical conductivity, as compared to those of their fine grain structured counterparts. The upgraded wear resistance is attributed to the restricted micro-plowing and the mechanically mixed layer, induced by a refined microstructure, intrinsic high hardness, and the composition modulation on the wear surface.
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Affiliation(s)
- Chao Hou
- College of Materials Science and Engineering, Key Laboratory of Advanced Functional Materials, Education Ministry of China, Beijing University of Technology, Beijing 100124, People's Republic of China
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20
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Influence of MoS2 on Activity and Stability of Carbon Nitride in Photocatalytic Hydrogen Production. Catalysts 2019. [DOI: 10.3390/catal9080695] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
MoS2/C3N4 (MS-CN) composite photocatalysts have been synthesized by three different methods, i.e., in situ-photodeposition, sonochemical, and thermal decomposition. The crystal structure, optical properties, chemical composition, microstructure, and electron transfer properties were investigated by X-ray diffraction, UV-vis diffuse reflectance spectroyscopy, X-ray photoelectron spectroscopy, electron microscopy, photoluminescence, and in situ electron paramagnetic resonance spectroscopy. During photodeposition, the 2H MoS2 phase was formed upon reduction of [MoS4]2− by photogenerated conduction band electrons and then deposited on the surface of CN. A thin crystalline layer of 2H MoS2 formed an intimate interfacial contact with CN that favors charge separation and enhances the photocatalytic activity. The 2H MS-CN phase showed the highest photocatalytic H2 evolution rate (2342 μmol h−1 g−1, 25 mg catalyst/reaction) under UV-vis light irradiation in the presence of lactic acid as sacrificial reagent and Pt as cocatalyst.
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21
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Proniewicz E, Tąta A, Starowicz M, Szkudlarek A, Pacek J, Molenda M, Kuśtrowski P. Ions-free electrochemically synthetized in aqueous media flake-like CuO nanostructures as SERS reproducible substrates for the detection of neurotransmitters. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 215:24-33. [PMID: 30825867 DOI: 10.1016/j.saa.2019.02.051] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 01/28/2019] [Accepted: 02/16/2019] [Indexed: 06/09/2023]
Abstract
The process of catalytic destruction of tumor cells can be strengthened by introducing copper(II) oxide nanostructures (CuONSs) with receptor's agonists/antagonists immobilized on their surface. Here we show a simple and reliable electrochemical method for the fabrication ions-free flake-like CuO nanostructures in a surfactant/ions free aqueous environment. For the determination of the metal surface plasmon, size, rheology, and structure of the fabricated nanostructures ultraviolet-visible (UV-Vis), Fourier-transform infrared (FT-IR), Raman, and X-ray photoelectron (XPS) spectroscopies as well as scanning electron microscope (SEM), high-resolution transmission electron microscopy with energy dispersive X-ray (HDTEM-EDS), X-ray powder diffraction (XRD), and dynamic light scattering (DLS) analysis were used. The fabricated nanostructures were used as highly sensitive, uniform, and reproducible sensors of a natural ligand (bombesin) of some types of metabotropic seven transmembrane G protein-coupled superfamily receptors (GPCRs), which are over-express on the surface of many malignant tumors. Surface-enhanced Raman scattering (SERS) was used to monitor the geometry of adsorbate, separate, enrich, and detect various bombesin C-terminal fragments. It has been shown that the type of used substrate, surface development, and ions present in the solution have little effect on the mode of adsorption.
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Affiliation(s)
- Edyta Proniewicz
- Faculty of Foundry Engineering, AGH University of Science and Technology, 30-059 Krakow, Poland.
| | - Agnieszka Tąta
- Faculty of Foundry Engineering, AGH University of Science and Technology, 30-059 Krakow, Poland
| | - Maria Starowicz
- Faculty of Foundry Engineering, AGH University of Science and Technology, 30-059 Krakow, Poland
| | - Aleksandra Szkudlarek
- Academic Centre for Materials and Nanotechnology, AGH University of Science and Technology, 30-055 Krakow, Poland
| | - Joanna Pacek
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Marcin Molenda
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
| | - Piotr Kuśtrowski
- Faculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, Poland
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22
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Li W, Cui X, Junge K, Surkus AE, Kreyenschulte C, Bartling S, Beller M. General and Chemoselective Copper Oxide Catalysts for Hydrogenation Reactions. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04807] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Wu Li
- Leibniz−Institut für Katalyse e.V. an der Universität Rostock, Albert−Einstein Straße 29a, 18059 Rostock, Germany
| | - Xinjiang Cui
- Leibniz−Institut für Katalyse e.V. an der Universität Rostock, Albert−Einstein Straße 29a, 18059 Rostock, Germany
| | - Kathrin Junge
- Leibniz−Institut für Katalyse e.V. an der Universität Rostock, Albert−Einstein Straße 29a, 18059 Rostock, Germany
| | - Annette-Enrica Surkus
- Leibniz−Institut für Katalyse e.V. an der Universität Rostock, Albert−Einstein Straße 29a, 18059 Rostock, Germany
| | - Carsten Kreyenschulte
- Leibniz−Institut für Katalyse e.V. an der Universität Rostock, Albert−Einstein Straße 29a, 18059 Rostock, Germany
| | - Stephan Bartling
- Leibniz−Institut für Katalyse e.V. an der Universität Rostock, Albert−Einstein Straße 29a, 18059 Rostock, Germany
| | - Matthias Beller
- Leibniz−Institut für Katalyse e.V. an der Universität Rostock, Albert−Einstein Straße 29a, 18059 Rostock, Germany
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23
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Deerattrakul V, Puengampholsrisook P, Limphirat W, Kongkachuichay P. Characterization of supported Cu-Zn/graphene aerogel catalyst for direct CO2 hydrogenation to methanol: Effect of hydrothermal temperature on graphene aerogel synthesis. Catal Today 2018. [DOI: 10.1016/j.cattod.2017.12.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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24
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Proniewicz E, Vantasin S, Olszewski TK, Boduszek B, Ozaki Y. Biological application of water-based electrochemically synthesized CuO leaf-like arrays: SERS response modulated by the positional isomerism and interface type. Phys Chem Chem Phys 2018; 19:31842-31855. [PMID: 29171610 DOI: 10.1039/c7cp06001g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cupric oxide leaf-like nanostructures (CuONSs) (average dimensions: 80-180 nm in width and 400-750 nm in length) were synthesized via anodic electrochemical dissolution of copper in an ethanol solution containing LiCl electrolyte and water. Ultraviolet-visible (UV-Vis), Fourier-transform infrared (FT-IR), and Raman spectroscopies as well as scanning electron microscope (SEM), high-resolution transmission electron microscopy with energy dispersive X-ray (HD-TEM-EDS), X-ray photoelectron spectroscopy (XPS), and X-ray powder diffraction (XRD) were used to explore the metal surface plasmon, size, rheology, and structure of CuONSs. Then, pyridine α-aminophosphinic acid isomers (α-, β-, and γ-NHPy) were synthesized and assembled on the CuONS/air and CuONS/aqueous solution interfaces at the pH level of solution = 7. Differences in adsorption and thus in the spectral response resulting from positional isomerism were examined by surface-enhanced Raman scattering (SERS) with an excitation wavelength of 785 nm. The manner of interaction of the investigated isomers with CuONSs in an aqueous solution was discussed in detail and compared with that at the CuONS/air interface. For γ-NHPy, at the CuONS/water interface, the time-dependent changes in the spectral profile were observed and analyzed. For β-NHPy at the CuONS/air interface, tip-enhanced Raman scattering (TERS) measurements were performed. These measurements allowed observing single molecule behavior and avoiding interference from the molecule's surrounding environment.
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Affiliation(s)
- E Proniewicz
- Faculty of Foundry Engineering, AGH University of Science and Technology, ul. Reymonta 23, 30-059 Kraków, Poland.
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25
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He J, Feng H, Wang T, Wang T, Zeng H. Morphology-controlled Electrodeposition of Copper Nanospheres onto FTO for Enhanced Photocatalytic Hydrogen Production. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201700344] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jieyun He
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou Guangdong 510641 China
| | - Heshan Feng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou Guangdong 510641 China
| | - Ting Wang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou Guangdong 510641 China
| | - Tingting Wang
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou Guangdong 510641 China
| | - Heping Zeng
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering; South China University of Technology; Guangzhou Guangdong 510641 China
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26
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Polyakov M, Surkus AE, Maljusch A, Hoch S, Martin A. Impact of the Co : Cu Ratio in CoCu-Containing Oxidic Solids on their Activity for the Water-Splitting Reaction. ChemElectroChem 2017. [DOI: 10.1002/celc.201700124] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Mykola Polyakov
- Leibniz Institute for Catalysis; Albert-Einstein-Straße 29a 18059 Rostock Germany
| | | | - Artjom Maljusch
- Evonik Creavis GmbH; Paul-Baumann-Straße 1 45772 Marl Germany
| | - Sascha Hoch
- Evonik Creavis GmbH; Paul-Baumann-Straße 1 45772 Marl Germany
| | - Andreas Martin
- Leibniz Institute for Catalysis; Albert-Einstein-Straße 29a 18059 Rostock Germany
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27
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Concepción P, Boronat M, García-García S, Fernández E, Corma A. Enhanced Stability of Cu Clusters of Low Atomicity against Oxidation. Effect on the Catalytic Redox Process. ACS Catal 2017. [DOI: 10.1021/acscatal.7b00778] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Patricia Concepción
- Instituto
de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Mercedes Boronat
- Instituto
de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Saray García-García
- Instituto
de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Estefanía Fernández
- Instituto
de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Av. de los Naranjos s/n, 46022 Valencia, Spain
| | - Avelino Corma
- Instituto
de Tecnología Química, Universitat Politècnica de València-Consejo Superior de Investigaciones Científicas (UPV-CSIC), Av. de los Naranjos s/n, 46022 Valencia, Spain
- King Fahd University of Petroleum and Minerals, P.O. Box 989, Dhahran 31261, Saudi Arabia
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28
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Photocatalytic Reduction of CO2 with Water into Methanol and Ethanol Using Graphene Derivative–TiO2 Composites: Effect of pH and Copper(I) Oxide. Top Catal 2016. [DOI: 10.1007/s11244-016-0655-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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29
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Xie F, Wang L, Wang K, Hua D, Li W. Preparation of CuO/SiO2 Hollow Spheres for Catalytic Oxidation of Phenol. CATALYSIS SURVEYS FROM ASIA 2016. [DOI: 10.1007/s10563-016-9208-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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30
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Stach S, Garczyk Ż, Ţălu Ş, Solaymani S, Ghaderi A, Moradian R, Nezafat NB, Elahi SM, Gholamali H. Stereometric Parameters of the Cu/Fe NPs Thin Films. THE JOURNAL OF PHYSICAL CHEMISTRY C 2015. [DOI: 10.1021/acs.jpcc.5b04676] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Sebastian Stach
- University of Silesia, Faculty of Computer Science
and Materials Science, Institute of Informatics, Department of Biomedical
Computer Systems, Będzińska
39, 41-205 Sosnowiec, Poland
| | - Żaneta Garczyk
- University of Silesia, Faculty of Computer Science
and Materials Science, Institute of Informatics, Department of Biomedical
Computer Systems, Będzińska
39, 41-205 Sosnowiec, Poland
| | - Ştefan Ţălu
- Technical University of Cluj-Napoca, Faculty of Mechanical
Engineering, Department of AET, Discipline of Descriptive Geometry
and Engineering Graphics, 103-105 B-dul Muncii Street, Cluj-Napoca 400641, Cluj, Romania
| | - Shahram Solaymani
- Young
Researchers and Elite Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
| | - Atefeh Ghaderi
- Physics
Department, Faculty of Science, Razi University, Kermanshah, Iran
| | - Rostam Moradian
- Physics
Department, Faculty of Science, Razi University, Kermanshah, Iran
- Nano
Science and Technology Research Center, Razi University, Kermanshah, Iran
| | - Negin Beryani Nezafat
- Young
Researchers and Elite Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran
| | - Seyed Mohammad Elahi
- Plasma Physics
Research Centre, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Hedieh Gholamali
- Plasma Physics
Research Centre, Science and Research Branch, Islamic Azad University, Tehran, Iran
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31
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Fernandes AE, Ye Q, Collard L, Le Duff C, d'Haese C, Deumer G, Haufroid V, Nysten B, Riant O, Jonas AM. Effects of Thickness and Grafting Density on the Activity of Polymer-Brush-Immobilized Tris(triazolyl) Copper(I) Catalysts. ChemCatChem 2015. [DOI: 10.1002/cctc.201402913] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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32
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Patil JD, Patil SA, Pore DM. A polymer supported ascorbate functionalized task specific ionic liquid: an efficient reusable catalyst for 1,3-dipolar cycloaddition. RSC Adv 2015. [DOI: 10.1039/c4ra16481d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In situ coalescence of copper on polymer supported ascorbate functionalized task specific ionic liquid, acts as an efficient catalyst for Huisgen 1,3 dipolar cycloaddition.
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33
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Rahman MM, Asiri AM. Fabrication of highly sensitive ethanol sensor based on doped nanostructure materials using tiny chips. RSC Adv 2015. [DOI: 10.1039/c5ra08224b] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Doped CuO–Fe2O3 nanocubes (NCs) are prepared via a facile wet-chemical process using active reactant precursors with reducing agents in high pH medium (pH > 10).
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Affiliation(s)
- Mohammed M. Rahman
- Center of Excellence for Advanced Material Research (CEAMR) and Chemistry Department
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
| | - Abdullah M. Asiri
- Center of Excellence for Advanced Material Research (CEAMR) and Chemistry Department
- Faculty of Science
- King Abdulaziz University
- Jeddah 21589
- Saudi Arabia
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34
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Zhao Y, Wang W, Li Y, Zhang Y, Yan Z, Huo Z. Hierarchical branched Cu2O nanowires with enhanced photocatalytic activity and stability for H2 production. NANOSCALE 2014; 6:195-198. [PMID: 24241480 DOI: 10.1039/c3nr04280d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Hierarchical branched Cu2O nanowires were synthesized under mild conditions and exhibit remarkable performance for photocatalytic H2 generation from water. The obtained results open appealing perspectives for converting solar energy into storable chemical energy.
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Affiliation(s)
- Yuxin Zhao
- State Key Laboratory for Heavy Oil Processing, PetroChina Key Laboratory of Catalysis, China University of Petroleum, Qingdao 266580, China.
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35
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Sinha B, Goswami T, Paul S, Misra A. The impact of surface structure and band gap on the optoelectronic properties of Cu2O nanoclusters of varying size and symmetry. RSC Adv 2014. [DOI: 10.1039/c3ra45387a] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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36
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Wang X, Li Y, Wang M, Li W, Chen M, Zhao Y. Synthesis of tunable ZnS–CuS microspheres and visible-light photoactivity for rhodamine B. NEW J CHEM 2014. [DOI: 10.1039/c4nj00264d] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The heterostructure of obtained ZnS–CuS can timely transfer and separate photogenerated electrons and holes, which enhances their photocatalytic abilities.
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Affiliation(s)
- Xuewu Wang
- Key Laboratory of Display Materials & Photoelectric Devices
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384, P. R. China
| | - Yanan Li
- Key Laboratory of Display Materials & Photoelectric Devices
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384, P. R. China
| | - Mingrui Wang
- Key Laboratory of Display Materials & Photoelectric Devices
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384, P. R. China
| | - Wenjiang Li
- Key Laboratory of Display Materials & Photoelectric Devices
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384, P. R. China
| | - Minfang Chen
- Key Laboratory of Display Materials & Photoelectric Devices
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384, P. R. China
| | - Yue Zhao
- Key Laboratory of Display Materials & Photoelectric Devices
- School of Materials Science and Engineering
- Tianjin University of Technology
- Tianjin 300384, P. R. China
- School of Mechanical
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37
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Active Sites for Selective Catalytic Reduction. UREA-SCR TECHNOLOGY FOR DENOX AFTER TREATMENT OF DIESEL EXHAUSTS 2014. [DOI: 10.1007/978-1-4899-8071-7_7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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38
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Yue Y, Liang Y, Wang H, Feng L, Feng S, Lu H. Photophysical Properties of Sol-gel derived Luminescent Silicone Hybrids SynthesizedviaFacile Amino-Ene Reaction. Photochem Photobiol 2012; 89:5-13. [PMID: 22774939 DOI: 10.1111/j.1751-1097.2012.01199.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuanzhi Yue
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, China
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39
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Mao Y, He J, Sun X, Li W, Lu X, Gan J, Liu Z, Gong L, Chen J, Liu P, Tong Y. Electrochemical synthesis of hierarchical Cu2O stars with enhanced photoelectrochemical properties. Electrochim Acta 2012. [DOI: 10.1016/j.electacta.2011.10.106] [Citation(s) in RCA: 141] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Shaikh JS, Pawar RC, Mali SS, Moholkar AV, Kim JH, Patil PS. Effect of annealing on the supercapacitor performance of CuO-PAA/CNT films. J Solid State Electrochem 2010. [DOI: 10.1007/s10008-010-1262-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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41
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Chen WL, Wang YH, Li YG, Wang EB, Li YW. Two new polyoxometalate-based organic-inorganic hybrids: synthesis, crystal structure and characterization. J COORD CHEM 2010. [DOI: 10.1080/00958970802401097] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Wei-Lin Chen
- a Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry , Institute of Polyoxometalate Chemistry, Northeast Normal University , Changchun , Jilin 130024 , P.R. China
| | - Yong-Hui Wang
- a Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry , Institute of Polyoxometalate Chemistry, Northeast Normal University , Changchun , Jilin 130024 , P.R. China
| | - Yang-Guang Li
- a Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry , Institute of Polyoxometalate Chemistry, Northeast Normal University , Changchun , Jilin 130024 , P.R. China
| | - En-Bo Wang
- a Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry , Institute of Polyoxometalate Chemistry, Northeast Normal University , Changchun , Jilin 130024 , P.R. China
| | - Yun-Wu Li
- a Key Laboratory of Polyoxometalate Science of Ministry of Education, Department of Chemistry , Institute of Polyoxometalate Chemistry, Northeast Normal University , Changchun , Jilin 130024 , P.R. China
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A general strategy for the preparation of carbon nanotubes and graphene oxide decorated with PdO nanoparticles in water. Molecules 2010; 15:4679-94. [PMID: 20657385 PMCID: PMC6257560 DOI: 10.3390/molecules15074679] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2010] [Revised: 06/11/2010] [Accepted: 07/02/2010] [Indexed: 11/17/2022] Open
Abstract
The preparation of carbon nanotube (CNT)/PdO nanoparticles and graphene oxide (GO)/PdO nanoparticle hybrids via a general aqueous solution strategy is reported. The PdO nanoparticles are generated in situ on the CNTs and GO by a one-step “green” synthetic approach in aqueous Pd(NO3)2 solution under ambient conditions without adding any additional chemicals. The production of PdO is confirmed by energy dispersive X-ray spectroscopy, X-ray diffraction, X-ray photoelectron spectroscopy, Raman spectroscopy, and thermal gravimetric analysis. The morphologies of the resulting CNT/PdO and GO/PdO nanohybrids are characterized by transmission and/or scanning transmission electron microscopy. PdO nanoparticles with an average size of 2–3 nm in diameter are decorated evenly along the surfaces of CNTs and GO. This synthesis strategy is demonstrated to be compatible for 1) CNTs with different modifications, including pristine, oxidized, and polymer-functionalized CNTs; 2) different types of CNTs, including single-walled carbon nanotubes (SWCNTs), double-walled carbon nanotubes (DWCNTs), and multiwalled carbon nanotubes (MWCNTs); and 3) different shapes of carbon materials, including tubular CNTs and planar GO. The as-prepared CNT/PdO and GO/PdO nanohybrids can be transformed into CNT/Pd and GO/Pd nanohybrids by reduction with NaBH4, and can then be used as a heterogeneous catalyst in the catalytic reduction of 4-nitrophenol.
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Nadesalingam MP, Mukherjee S, Somasundaram S, Chenthamarakshan CR, de Tacconi NR, Rajeshwar K, Weiss AH. Effect of vacuum annealing on the surface chemistry of electrodeposited copper(I) oxide layers as probed by positron annihilation induced auger electron spectroscopy. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2007; 23:1830-4. [PMID: 17279663 DOI: 10.1021/la062709a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Vacuum anneal induced changes in the surface layers of electrodeposited copper(I) oxide (Cu2O) were probed by time-of-flight positron annihilation induced Auger electron spectroscopy (TOF-PAES) and by electron induced Auger electron spectroscopy (EAES). Large changes in the intensity of the Cu PAES intensity resulting from isochronal in situ vacuum anneals made at increasing temperatures indicated that, before thermal treatment, the surface was completely covered by a carbonaceous overlayer and that this layer was removed, starting at a temperature between 100 and 200 degrees C, to expose an increasing amount of Cu in the top layer as the anneal temperature was increased. The thickness of this overlayer was estimated to be approximately 4 A based on analysis of the EAES data, and its variation with the thermal anneal temperature was mapped. This study demonstrated the order-of-magnitude enhancement in the sensitivity of PAES to the topmost surface layer in Cu2O relative to the EAES counterpart; factors underlying this contrast are discussed. Finally, the implications of ultrathin carbon layers on semiconductor surfaces are discussed.
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Affiliation(s)
- M P Nadesalingam
- Department of Physics and Center for Renewable Energy Science and Technology, The University of Texas at Arlington, Arlington, Texas 76019, USA
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Pedersen H, Ojamäe L. Towards biocompatibility of RE2O3 nanocrystals - water and organic molecules chemisorbed on Gd2O3 and Y2O3 nanocrystals studied by quantum-chemical computations. NANO LETTERS 2006; 6:2004-8. [PMID: 16968016 DOI: 10.1021/nl061185w] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Nanocrystals of Gd2O3/Y2O3 and their interaction with water, formic acid, diethylene glycol (DEG), and tetramethoxy silane (TMOS) have been studied by quantum-chemical calculations at the B3LYP level using solvent-coated clusters of gadolinia and yttria. Adsorption energies, surface geometries, electronic structures, and excitation spectra were calculated. The results concerning adsorption strengths and superparamagnetic high-spin states can provide insight into the design of molecular-capped RE2O3 nanocrystals to be used in vivo.
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Affiliation(s)
- Henrik Pedersen
- Department of Chemistry, IFM, Linköping University, SE-581 83 Linköping, Sweden
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Huang L, Chu W, Long Y, Ci Z, Luo S. Influence of Zirconia Promoter on Catalytic Properties of Cu–Cr–Si Catalysts for Methanol Synthesis at High CO Conversion in Slurry Phase. Catal Letters 2006. [DOI: 10.1007/s10562-006-0027-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Correlation between optical properties and electronic parameters for mixed oxide thin films. SURF INTERFACE ANAL 2006. [DOI: 10.1002/sia.2273] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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