1
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Akbar H, Ali A, Mohammad S, Anjum F, Ahmad A, Afzal AM, Albaqami MD, Mohammad S, Choi JR. Exploring the Potential of Nitrogen-Doped Graphene in ZnSe-TiO 2 Composite Materials for Supercapacitor Electrode. Molecules 2024; 29:2103. [PMID: 38731594 PMCID: PMC11085058 DOI: 10.3390/molecules29092103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 04/23/2024] [Accepted: 04/26/2024] [Indexed: 05/13/2024] Open
Abstract
The current study explores the prospective of a nitrogen-doped graphene (NG) incorporated into ZnSe-TiO2 composites via hydrothermal method for supercapacitor electrodes. Structural, morphological, and electronic characterizations are conducted using XRD, SEM, Raman, and UV analyses. The electrochemical study is performed and galvanostatic charge-discharge (GCD) and cyclic voltammetry (CV) are evaluated for the supercapacitor electrode material. Results demonstrate improved performance in the ZnSe-NG-TiO2 composite, indicating its potential for advanced supercapacitors with enhanced efficiency, stability, and power density. Specific capacity calculations and galvanic charge-discharge experiments confirmed the promising electrochemical activity of ZnSe-NG-TiO2, which has a specific capacity of 222 C/g. The negative link among specific capacity and current density demonstrated the composite's potential for high energy density and high-power density electrochemical devices. Overall, the study shows that composite materials derived from multiple families can synergistically improve electrode characteristics for advanced energy storage applications.
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Affiliation(s)
- Hassan Akbar
- Department of Physics, Abbottabad University of Science and Technology (AUST), Havelian Havelian, Abbottabad 22500, Pakistan;
| | - Asghar Ali
- Pakistan Department of Physics, The University of Lahore, 1-km, Defense Road, Lahore 54000, Pakistan;
| | - Shoaib Mohammad
- Department of Mechanical Engineering, University of Engineering and Applied Sciences, Swat 19201, Pakistan;
| | - Faiza Anjum
- Pakistan Department of Physics, The University of Lahore, 1-km, Defense Road, Lahore 54000, Pakistan;
| | - Ashfaq Ahmad
- School of Material Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China
| | - Amir Muhammad Afzal
- Pakistan Department of Physics, Riphah International University, Lahore 54000, Pakistan;
| | - Munirah D. Albaqami
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.D.A.); (S.M.)
| | - Saikh Mohammad
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia; (M.D.A.); (S.M.)
| | - Jeong Ryeol Choi
- School of Electronic Engineering, Kyonggi University, Yeongtong-gu, Suwon 16227, Gyeonggi-do, Republic of Korea
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2
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Luo S, Zhang Z, Yu L, Wei S, Ji Z, Liang J, Wei Z, Song W, Zheng S. Achieving High Thermoelectric Performance in ZnSe-Doped CuGaTe 2 by Optimizing the Carrier Concentration and Reducing Thermal Conductivity. ACS Appl Mater Interfaces 2024; 16:16253-16260. [PMID: 38514257 DOI: 10.1021/acsami.4c00455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
The CuGaTe2 thermoelectric material has garnered widespread attention as an inexpensive and nontoxic material for mid-temperature thermoelectric applications. However, its development has been hindered by its low intrinsic carrier concentration and high thermal conductivity. This study investigates the band structure and thermoelectric properties of (CuGaTe2)1-x (ZnSe)x (x = 0, 0.25%, 0.5%, 1%, 1.5%, and 2%). The research revealed that the incorporation of Zn and Se atoms enhanced the level of band degeneracy and electron density of states near Fermi level, significantly raising carrier concentration through the formation of Zn Ga - point defects. Simultaneously, when the doping content reached 1.5%, the ZnTe second phase emerged, collaborating with point defects and high-density dislocations, effectively scattering phonons and substantially reducing lattice thermal conductivity. Therefore, introducing ZnSe can simultaneously optimize the material's electrical and thermal transport properties. The (CuGaTe2)0.985(ZnSe)0.015 sample reaches peak ZT of 1.32 at 823 K, representing a 159% increase compared to pure CuGaTe2.
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Affiliation(s)
- Sitong Luo
- College of New Energy and Materials, China University of Petroleum, Beijing 102249, PR China
| | - Zipei Zhang
- College of New Energy and Materials, China University of Petroleum, Beijing 102249, PR China
| | - Lu Yu
- College of New Energy and Materials, China University of Petroleum, Beijing 102249, PR China
| | - Sitong Wei
- College of New Energy and Materials, China University of Petroleum, Beijing 102249, PR China
| | - Zhen Ji
- College of New Energy and Materials, China University of Petroleum, Beijing 102249, PR China
| | - Jingxuan Liang
- College of New Energy and Materials, China University of Petroleum, Beijing 102249, PR China
| | - Zhibo Wei
- College of New Energy and Materials, China University of Petroleum, Beijing 102249, PR China
| | - Weiyu Song
- College of Science, China University of Petroleum, Beijing 102249, PR China
| | - Shuqi Zheng
- College of New Energy and Materials, China University of Petroleum, Beijing 102249, PR China
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3
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Liu Y, Lüttjohann S, Vianello A, Lorenz C, Liu F, Vollertsen J. Detecting small microplastics down to 1.3 μm using large area ATR-FTIR. Mar Pollut Bull 2024; 198:115795. [PMID: 38006870 DOI: 10.1016/j.marpolbul.2023.115795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 10/18/2023] [Accepted: 11/12/2023] [Indexed: 11/27/2023]
Abstract
Large area attenuated total reflectance-Fourier transform infrared spectroscopy (LAATR-FTIR) is introduced as a novel technique for detecting small microplastics (MPs) down to 1.3 μm. Two different LAATR units, one with a zinc selenide (ZnSe) and one with a germanium (Ge) crystal, were used to detect reference MPs < 20 μm, and MPs in marine water samples, and compared with μ-FTIR in transmission mode. The LAATR units performed well in identifying small MPs down to 1.3 μm. However, they were poorly suited for large MPs as uneven particle thickness resulted in uneven contact between crystal and particle, misinterpreting large MPs as many small MPs. However, for more homogeneous matrices, the technique was promising. Further assessment indicated that there was little difference in spectra quality between transmission mode and LAATR mode. All in all, while LAATR units struggle to substitute transmission mode, it provides additional information and valuable information on small MPs.
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Affiliation(s)
- Yuanli Liu
- Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Denmark; College of Environmental and Biological Engineering, Putian University, Putian 351100, China; Fujian Provincial Key Laboratory of Ecology-Toxicological Effects and Control for Emerging Contaminants, Putian University, Putian 351100, China; Key Laboratory of Ecological Environment and Information Atlas, Fujian Provincial University, Putian 351100, Fujian, China.
| | - Stephan Lüttjohann
- Bruker Optics GmbH & Co. KG, Rudolf-Plank-Straße 27, 76275 Ettlingen, Germany
| | - Alvise Vianello
- Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Denmark
| | - Claudia Lorenz
- Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Denmark
| | - Fan Liu
- Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Denmark
| | - Jes Vollertsen
- Department of the Built Environment, Aalborg University, Thomas Manns Vej 23, 9220 Aalborg, Denmark
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4
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Hou Z, Ma H, Tao H, Yang XL. Inorganic Hybrid Interfacial Layer for a Stable Zinc Metal Anode. ACS Appl Mater Interfaces 2023. [PMID: 38037832 DOI: 10.1021/acsami.3c13822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
In aqueous zinc-ion batteries (AZIBs), the zinc metal anode faces serious problems such as dendrite growth, interface corrosion, and byproduct accumulation, which hinder the commercialization process of AZIBs. Herein, an inorganic hybrid interfacial layer ZnF2/ZnSe (ZnFS) including the insulating interfacial phase (ZnF2) and conductive interfacial phase (ZnSe) has been manufactured. ZnF2 provides excellent corrosion resistance, inhibiting the corrosion and passivation of the zinc metal anode to enhance interfacial stability. The conductive ZnSe can reduce the interfacial resistance and induce the rapid migration of Zn2+, leading to the uniform deposition of Zn to inhibit the dendrite growth. Consequently, the Zn/ZnFS//Zn/ZnFS symmetrical batteries can run stably for more than 2200 h at 1 mA cm-2/1 mAh cm-2 and over 700 h at 5 mA cm-2/5 mAh cm-2. At the same time, the average Coulombic efficiency of the Zn/ZnFS//Ti half batteries reaches 98.3% after 600 cycles (1 mA cm-2/1 h), indicating that the reversibility of zinc was greatly improved. The full batteries based on the Zn/ZnFS anode and (NH4)2V10O25·8H2O cathode perform a high capacity ratio of 73.4% after 620 cycles at 1 A g-1. The concept of hybrid interface layer design can provide inspiration for the modification of metal anode.
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Affiliation(s)
- Zhenhua Hou
- College of Materials and Chemical Engineering, Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, China Three Gorges University, Yichang 443002, Hubei, China
| | - Hui Ma
- Hubei Three Gorges Polytechnic, Yichang 443000, Hubei, China
| | - Huachao Tao
- College of Materials and Chemical Engineering, Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, China Three Gorges University, Yichang 443002, Hubei, China
| | - Xue-Lin Yang
- College of Materials and Chemical Engineering, Hubei Provincial Collaborative Innovation Center for New Energy Microgrid, China Three Gorges University, Yichang 443002, Hubei, China
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5
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Wang Q, Wang Q, Yuan R, Zhang Z, Long J, Lin H. Facile Preparation of the ZnSe/Ag 2Se Binary Heterojunction for Photocatalytic Antibacterial Efficiency. ACS Appl Mater Interfaces 2023; 15:50155-50165. [PMID: 37852272 DOI: 10.1021/acsami.3c09534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2023]
Abstract
In a novel approach that capitalized on the differential solubility product (Ksp) of ZnSe and Ag2Se, a unique ZnSe/Ag2Se binary heterostructure was efficiently synthesized in situ. ZnSe/Ag2Se exhibited excellent antimicrobial efficiency under visible light. Incorporating Ag2Se into ZnSe significantly enhanced the photoelectric performance of the catalyst, greatly accelerating the separation of the photogenerated electrons in the system. Active species removal experiments determined that ·O2- and H2O2 played crucial roles in photocatalytic antibacterial efficiency. Further investigation into the levels of cellular membrane peroxidation, bacterial morphology, and intracellular contents concentration revealed that during the photocatalytic antimicrobial process, reactive oxygen species initially oxidize phospholipids in the cell membrane, leading to damage to the external structure of the cell and leakage of the intracellular contents, ultimately resulting in bacteria inactivation. The photocatalytic antimicrobial process of ZnSe/Ag2Se fundamentally deviates from conventional methods, offering new insights into efficient disinfection and photocatalytic antimicrobial mechanisms.
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Affiliation(s)
- Qian Wang
- College of Chemistry of Fuzhou University, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, China
| | - Qin Wang
- College of Chemistry of Fuzhou University, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, China
| | - Rusheng Yuan
- College of Chemistry of Fuzhou University, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, China
| | - Zizhong Zhang
- College of Chemistry of Fuzhou University, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, China
| | - Jinlin Long
- College of Chemistry of Fuzhou University, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, China
| | - Huaxiang Lin
- College of Chemistry of Fuzhou University, State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou 350116, China
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6
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Joshi N, Maurya V, Joshi KB. Optical properties of ZnSe using linear response theory. J Phys Condens Matter 2023; 35:215901. [PMID: 36898155 DOI: 10.1088/1361-648x/acc378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Accepted: 03/10/2023] [Indexed: 06/18/2023]
Abstract
The electronic structure and optical response of ZnSe are studied in this work. The studies are carried out using first-principles full-potential linearized augmented plane wave method. After settling the crystal structure, the electronic band structure of the ground state of ZnSe is calculated. Linear response theory is applied to study optical response considering bootstrap (BS) and the long range contribution (LRC) kernels for the first time. We also use the random phase and adiabatic local density approximations for comparison. A procedure based on empirical pseudopotential method is developed to find material dependent parameterαrequired in the LRC kernel. The results are assessed by calculating the real and imaginary parts of linear dielectric function, refractive index, reflectivity, and the absorption coefficient. Results are compared with other calculations and available experimental data. The results of LRC kernel findingαfrom the proposed scheme are encouraging and at par with the BS kernel.
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Affiliation(s)
- Nikhil Joshi
- Department of Physics, ML Sukhadia University, Udaipur 313001, India
| | - Vijay Maurya
- Department of Physics, ML Sukhadia University, Udaipur 313001, India
| | - K B Joshi
- Department of Physics, ML Sukhadia University, Udaipur 313001, India
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7
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Pettit RM, Karasahin A, von den Driesch N, Jansen MM, Pawlis A, Waks E. Correlations between Cascaded Photons from Spatially Localized Biexcitons in ZnSe. Nano Lett 2022; 22:9457-9461. [PMID: 36441911 DOI: 10.1021/acs.nanolett.2c03527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Radiative cascades emit correlated photon pairs, providing a pathway for the generation of entangled photons. The realization of a radiative cascade with impurity atoms in semiconductors, a leading platform for the generation of quantum light, would therefore provide a new avenue for the development of entangled photon pair sources. Here we demonstrate a radiative cascade from the decay of a biexciton at an impurity-atom complex in a ZnSe quantum well. The emitted photons show clear temporal correlations revealing the time-ordering of the cascade. Our result establishes impurity atoms in ZnSe as a potential platform for photonic quantum technologies using radiative cascades.
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Affiliation(s)
- Robert M Pettit
- Institute for Research in Electronics and Applied Physics and Joint Quantum Institute, University of Maryland, College Park, Maryland 20742, United States
- Intelligence Community Postdoctoral Research Fellowship Program, University of Maryland, College Park, Maryland 20742, United States
| | - Aziz Karasahin
- Institute for Research in Electronics and Applied Physics and Joint Quantum Institute, University of Maryland, College Park, Maryland 20742, United States
| | - Nils von den Driesch
- Peter-Grünberg-Institute (PGI-9), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
- JARA-FIT (Fundamentals of Future Information Technology), Jülich-Aachen Research Alliance, 52062 Aechen, Germany
| | - Marvin Marco Jansen
- Peter-Grünberg-Institute (PGI-9), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
- JARA-FIT (Fundamentals of Future Information Technology), Jülich-Aachen Research Alliance, 52062 Aechen, Germany
| | - Alexander Pawlis
- Peter-Grünberg-Institute (PGI-9), Forschungszentrum Jülich GmbH, 52425 Jülich, Germany
- JARA-FIT (Fundamentals of Future Information Technology), Jülich-Aachen Research Alliance, 52062 Aechen, Germany
| | - Edo Waks
- Institute for Research in Electronics and Applied Physics and Joint Quantum Institute, University of Maryland, College Park, Maryland 20742, United States
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8
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Rothman A, Bukvišová K, Itzhak NR, Kaplan-Ashiri I, Kossoy AE, Sui X, Novák L, Šikola T, Kolíbal M, Joselevich E. Real-Time Study of Surface-Guided Nanowire Growth by In Situ Scanning Electron Microscopy. ACS Nano 2022; 16:18757-18766. [PMID: 36305551 PMCID: PMC9706663 DOI: 10.1021/acsnano.2c07480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 10/24/2022] [Indexed: 06/16/2023]
Abstract
Surface-guided growth has proven to be an efficient approach for the production of nanowire arrays with controlled orientations and their large-scale integration into electronic and optoelectronic devices. Much has been learned about the different mechanisms of guided nanowire growth by epitaxy, graphoepitaxy, and artificial epitaxy. A model describing the kinetics of surface-guided nanowire growth has been recently reported. Yet, many aspects of the surface-guided growth process remain unclear due to a lack of its observation in real time. Here we observe how surface-guided nanowires grow in real time by in situ scanning electron microscopy (SEM). Movies of ZnSe surface-guided nanowires growing on periodically faceted substrates of annealed M-plane sapphire clearly show how the nanowires elongate along the substrate nanogrooves while pushing the catalytic Au nanodroplet forward at the tip of the nanowire. The movies reveal the timing between competing processes, such as planar vs nonplanar growth, catalyst-selective vapor-liquid-solid elongation vs nonselective vapor-solid thickening, and the effect of topographic discontinuities of the substrate on the growth direction, leading to the formation of kinks and loops. Contrary to some observations for nonplanar nanowire growth, planar nanowires are shown to elongate at a constant rate and not by jumps. A decrease in precursor concentration as it is consumed after long reaction time causes the nanowires to shrink back instead of growing, thus indicating that the process is reversible and takes place near equilibrium. This real-time study of surface-guided growth, enabled by in situ SEM, enables a better understanding of the formation of nanostructures on surfaces.
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Affiliation(s)
- Amnon Rothman
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot76100, Israel
| | - Kristýna Bukvišová
- Institute
of Physical Engineering, Brno University
of Technology, Technická 2, 616 69Brno, Czech Republic
- CEITEC
BUT, Brno University of Technology, Purkyňova 123, 612 00Brno, Czech
Republic
| | - Noya Ruth Itzhak
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot76100, Israel
| | - Ifat Kaplan-Ashiri
- Department
of Chemical Research Support, Weizmann Institute
of Science, Rehovot76100, Israel
| | - Anna Eden Kossoy
- Department
of Chemical Research Support, Weizmann Institute
of Science, Rehovot76100, Israel
| | - Xiaomeng Sui
- Department
of Chemical Research Support, Weizmann Institute
of Science, Rehovot76100, Israel
| | - Libor Novák
- Thermo
Fisher Scientific, Vlastimila
Pecha 12, 627 00Brno, Czech Republic
| | - Tomáš Šikola
- Institute
of Physical Engineering, Brno University
of Technology, Technická 2, 616 69Brno, Czech Republic
- CEITEC
BUT, Brno University of Technology, Purkyňova 123, 612 00Brno, Czech
Republic
| | - Miroslav Kolíbal
- Institute
of Physical Engineering, Brno University
of Technology, Technická 2, 616 69Brno, Czech Republic
- CEITEC
BUT, Brno University of Technology, Purkyňova 123, 612 00Brno, Czech
Republic
| | - Ernesto Joselevich
- Department
of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot76100, Israel
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9
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Sanchirico R, Lisi L, Di Sarli V. The Combined Effect of Ambient Conditions and Diluting Salt on the Degradation of Picric Acid: An In Situ DRIFT Study. Materials (Basel) 2022; 15:6029. [PMID: 36079410 PMCID: PMC9457245 DOI: 10.3390/ma15176029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/24/2022] [Accepted: 08/27/2022] [Indexed: 06/15/2023]
Abstract
An unexpected promoting effect of KBr, used as a diluting salt, on the degradation of picric acid (PA) was observed during in situ diffuse reflectance infrared Fourier-transform (DRIFT) spectroscopy experiments performed here under accelerated ageing conditions-at 80 °C and under an inert or oxidative atmosphere. While the formation of potassium picrate was excluded, this promoting effect-which is undesired as it masks the possible effects of test conditions on the ageing process of the material-was assumed to favor a first step of the decomposition mechanism of PA, which involves the inter- or intramolecular transfer of hydrogen to the nitro group, and possibly proceeds up to the formation of an amino group. An alternative diluting salt, ZnSe, which is much less commonly used in infrared spectroscopy than KBr, was then proposed in order to avoid misleading interpretation of the results. ZnSe was found to act as a truly inert diluting salt, preventing the promoting effect of KBr. The much more chemically inert nature (towards PA) of ZnSe compared to KBr was also confirmed, at much higher temperatures than DRIFT experiments, by dynamic differential scanning calorimetry (DSC) runs carried out on pure PA (i.e., PA without salt) and PA/salt (ZnSe or KBr) solid mixtures.
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10
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Alsheheri SZ, Shawky A, Alsaggaf WT, Zaki ZI. Visible-light responsive ZnSe-anchored mesoporous TiO 2heterostructures for boosted photocatalytic reduction of Cr(VI). Nanotechnology 2022; 33:305701. [PMID: 35439748 DOI: 10.1088/1361-6528/ac6816] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 04/18/2022] [Indexed: 06/14/2023]
Abstract
The accumulation of Cr(VI) ions in water can cause serious influences on the environment and human health. This work reports a humble synthesis of ZnSe nanoparticles anchored to the sol-gel prepared TiO2for visible-light-driven photocatalytic reduction of Cr(VI) ions. The 7.9 nm ZnSe nanoparticles were attached to TiO2surfaces at a content of 1.0-4.0 wt% as experiential by TEM investigation. The designed nanocomposite unveiled mesostructured surfaces exhibiting surface areas of 176-210 m2g-1. The impregnation of ZnSe amended the visible-light absorption of TiO2due to the bandgap decrease from 3.14 to 2.90 eV. The photocatalytic reduction of Cr(VI) applying the optimized portion of 3.0 wt% ZnSe/TiO2was achieved at 177μmol min-1. This photocatalytic activity is higher than the common Degussa P25 and pristine TiO2by 20 and 30 times, respectively. The improved performance is signified by the efficient interfacial separation of charge carriers by the introduction of ZnSe. This innovative ZnSe/TiO2has also shown photocatalytic stability for five consecutive runs.
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Affiliation(s)
- Soad Z Alsheheri
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80200, Jeddah 21589, Saudi Arabia
| | - Ahmed Shawky
- Nanomaterials and Nanotechnology Department, Advanced Materials Institute, Central Metallurgical R&D Institute (CMRDI) PO Box 87 Helwan 11421, Cairo, Egypt
| | - Wejdan T Alsaggaf
- Chemistry Department, Faculty of Science, King Abdulaziz University, PO Box 80200, Jeddah 21589, Saudi Arabia
| | - Z I Zaki
- Department of Chemistry, College of Science, Taif University, PO Box 11099, Taif 21944, Saudi Arabia
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11
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Ruan J, Zang J, Hu J, Che R, Fang F, Wang F, Song Y, Sun D. Respective Roles of Inner and Outer Carbon in Boosting the K + Storage Performance of Dual-Carbon-Confined ZnSe. Adv Sci (Weinh) 2022; 9:e2104822. [PMID: 34927387 PMCID: PMC8844574 DOI: 10.1002/advs.202104822] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Indexed: 05/07/2023]
Abstract
Potassium-ion batteries (PIBs) have been considered as potential alternatives for lithium-ion batteries since there is a demand for better anode with superior energy, excellent rate capability, and long cyclability. The high-capacity zinc selenide (ZnSe) anode, which combines the merits of conversion and alloying reactions, is promising for PIBs but suffers from poor cyclability and low electronic conductivity. To effectively boost electrochemical performance of ZnSe, a "dual-carbon-confined" structure is constructed, in which an inner N-doped microporous carbon (NMC)-coated ZnSe wrapped by outer-rGO (ZnSe@i-NMC@o-rGO) is synthesized. Combining finite element simulation, dynamic analysis, and density functional theory calculations, the respective roles of inner- and outer-carbon in boosting performance are revealed. The inner-NMC increased the reactivity of ZnSe with K+ and alleviated the volume expansion of ZnSe, while outer-rGO further stabilized the structure and promoted the reaction kinetics. Benefiting from the synergistic effect of dual-carbon, ZnSe@i-NMC@o-rGO exhibited a high specific capacity 233.4 mAh g-1 after 1500 cycles at 2.0 A g-1 . Coupled with activated carbon, a potassium-ion hybrid capacitor displayed a high energy density of 176.6 Wh kg-1 at 1800 W kg-1 and a superior capacity retention of 82.51% at 2.0 A g-1 after 11000 cycles.
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Affiliation(s)
- Jiafeng Ruan
- Department of Materials ScienceFudan UniversityShanghai200433P. R. China
| | - Jiahe Zang
- Department of Materials ScienceFudan UniversityShanghai200433P. R. China
| | - Jiaming Hu
- Department of Materials ScienceFudan UniversityShanghai200433P. R. China
| | - Renchao Che
- Department of Materials ScienceFudan UniversityShanghai200433P. R. China
| | - Fang Fang
- Department of Materials ScienceFudan UniversityShanghai200433P. R. China
| | - Fei Wang
- Department of Materials ScienceFudan UniversityShanghai200433P. R. China
| | - Yun Song
- Department of Materials ScienceFudan UniversityShanghai200433P. R. China
| | - Dalin Sun
- Department of Materials ScienceFudan UniversityShanghai200433P. R. China
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12
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Yang X, Li C, Sun Z, Yang S, Shi Z, Huang R, Liu B, Li S, Wu Y, Wang M, Su Y, Dou S, Sun J. Interfacial Manipulation via In Situ Grown ZnSe Cultivator toward Highly Reversible Zn Metal Anodes. Adv Mater 2021; 33:e2105951. [PMID: 34617348 DOI: 10.1002/adma.202105951] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/20/2021] [Indexed: 06/13/2023]
Abstract
Zn metal anode has garnered growing scientific and industrial interest owing to its appropriate redox potential, low cost, and high safety. Nevertheless, the instability of Zn anode caused by dendrite formation, hydrogen evolution, and side reactions has greatly hampered its commercialization. Herein, an in situ grown ZnSe overlayer is crafted over one side of commercial Zn foil via chemical vapor deposition in a scalable manner, aiming to achieve optimized electrolyte/Zn interfaces with large-scale viability. Impressively, thus-derived ZnSe coating functions as a cultivator to guide oriented growth of Zn (002) plane at the infancy stage of stripping/plating cycles, thereby inhibiting the formation of Zn dendrites and the occurrence of side reactions. As a result, high cyclic stability (1530 h at 1.0 mA cm-2 /1.0 mAh cm-2 ; 172 h at 30.0 mA cm-2 /10.0 mAh cm-2 ) in symmetric cells is harvested. Meanwhile, when paired with V2 O5 based cathode, assembled full cell achieves an outstanding capacity (194.5 mAh g-1 ) and elongated lifespan (a capacity retention of 84% after 1000 cycles) at 5.0 A g-1 . The reversible Zn anode enabled by the interfacial manipulation strategy via ZnSe cultivator is anticipated to satisfy the demand of commercial use.
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Affiliation(s)
- Xianzhong Yang
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Chao Li
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Zhongti Sun
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Shuai Yang
- Beijing Academy of Quantum Information Sciences, Beijing, 100193, P. R. China
| | - Zixiong Shi
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Rong Huang
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Bingzhi Liu
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
- Beijing Graphene Institute (BGI), Beijing, 100095, P. R. China
| | - Shuo Li
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Yuhan Wu
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Menglei Wang
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Yiwen Su
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Shixue Dou
- Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, New South Wales, 2522, Australia
| | - Jingyu Sun
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
- Beijing Graphene Institute (BGI), Beijing, 100095, P. R. China
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Yang X, Li C, Sun Z, Yang S, Shi Z, Huang R, Liu B, Li S, Wu Y, Wang M, Su Y, Dou S, Sun J. Interfacial Manipulation via In Situ Grown ZnSe Cultivator toward Highly Reversible Zn Metal Anodes. Adv Mater 2021; 33:e2105951. [PMID: 34617348 DOI: 10.21203/rs.3.rs-400312/v1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/20/2021] [Indexed: 05/21/2023]
Abstract
Zn metal anode has garnered growing scientific and industrial interest owing to its appropriate redox potential, low cost, and high safety. Nevertheless, the instability of Zn anode caused by dendrite formation, hydrogen evolution, and side reactions has greatly hampered its commercialization. Herein, an in situ grown ZnSe overlayer is crafted over one side of commercial Zn foil via chemical vapor deposition in a scalable manner, aiming to achieve optimized electrolyte/Zn interfaces with large-scale viability. Impressively, thus-derived ZnSe coating functions as a cultivator to guide oriented growth of Zn (002) plane at the infancy stage of stripping/plating cycles, thereby inhibiting the formation of Zn dendrites and the occurrence of side reactions. As a result, high cyclic stability (1530 h at 1.0 mA cm-2 /1.0 mAh cm-2 ; 172 h at 30.0 mA cm-2 /10.0 mAh cm-2 ) in symmetric cells is harvested. Meanwhile, when paired with V2 O5 based cathode, assembled full cell achieves an outstanding capacity (194.5 mAh g-1 ) and elongated lifespan (a capacity retention of 84% after 1000 cycles) at 5.0 A g-1 . The reversible Zn anode enabled by the interfacial manipulation strategy via ZnSe cultivator is anticipated to satisfy the demand of commercial use.
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Affiliation(s)
- Xianzhong Yang
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Chao Li
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Zhongti Sun
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Shuai Yang
- Beijing Academy of Quantum Information Sciences, Beijing, 100193, P. R. China
| | - Zixiong Shi
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Rong Huang
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Bingzhi Liu
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
- Beijing Graphene Institute (BGI), Beijing, 100095, P. R. China
| | - Shuo Li
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Yuhan Wu
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Menglei Wang
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Yiwen Su
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
| | - Shixue Dou
- Institute for Superconducting and Electronic Materials, University of Wollongong, Wollongong, New South Wales, 2522, Australia
| | - Jingyu Sun
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Jiangsu Provincial Key Laboratory for Advanced Carbon Materials and Wearable Energy Technologies, Soochow University, Suzhou, 215006, P. R. China
- Beijing Graphene Institute (BGI), Beijing, 100095, P. R. China
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14
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Zhang F, Yang Q, Bian H, Hou X, Chen F. Rapid Fabrication of Large-Area Concave Microlens Array on ZnSe. Micromachines (Basel) 2021; 12:mi12040458. [PMID: 33921624 PMCID: PMC8072650 DOI: 10.3390/mi12040458] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 03/30/2021] [Accepted: 04/12/2021] [Indexed: 12/13/2022]
Abstract
A rapid and single-step method for the fabrication of a zinc selenide (ZnSe) concave microlens array through the high-speed line-scanning of a femtosecond laser pulse is presented. Approximately 1.1 million microlenses, with minimized volume and high transparency at wavelengths between approximately 0.76–20 μm were fabricated within 36 min. More importantly, the size of the microlenses can be controlled by adjusting the laser power. Their high-quality infrared optical performance was also demonstrated. This method holds great promise for the development of ZnSe-based micro-optical devices.
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Affiliation(s)
- Fan Zhang
- State Key Laboratory for Manufacturing System Engineering, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (F.Z.); (X.H.)
| | - Qing Yang
- School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049, China;
| | - Hao Bian
- State Key Laboratory for Manufacturing System Engineering, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (F.Z.); (X.H.)
- Correspondence: (H.B.); (F.C.); Tel.: +86-029-8266-8420 (F.C.)
| | - Xun Hou
- State Key Laboratory for Manufacturing System Engineering, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (F.Z.); (X.H.)
| | - Feng Chen
- State Key Laboratory for Manufacturing System Engineering, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China; (F.Z.); (X.H.)
- Correspondence: (H.B.); (F.C.); Tel.: +86-029-8266-8420 (F.C.)
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15
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Khurram R, Wang Z, Ehsan MF. α-Fe 2O 3-based nanocomposites: synthesis, characterization, and photocatalytic response towards wastewater treatment. Environ Sci Pollut Res Int 2021; 28:17697-17711. [PMID: 33403627 DOI: 10.1007/s11356-020-11778-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 11/19/2020] [Indexed: 06/12/2023]
Abstract
Recently, rising distress over ecological pollution owing to water contamination by coloring effluents primarily due to dyes is of growing concern. The development of semiconductor/magnetic oxide-based nanomaterials has verified to be a potent remediation means for water pollution. In the present article, the fabrication of nanocomposites was carried out by the facile hydrothermal method. The ZnO and ZnSe nanoparticles were in situ formed on the α-Fe2O3 layer, thereby forming a heterojunction. The prepared α-Fe2O3/ZnSe nanocomposite possessed a degradation of 98.9% for a Congo red aqueous solution of 100 ppm. The α-Fe2O3/ZnO nanocomposite showed only 26% degradation of 100 ppm dye solution depicting a poor photocatalytic performance. This is attributed to the formation of recombination-enhanced configuration (type-I heterostructure) in the α-Fe2O3/ZnO nanocomposite (NC). In contrast, α-Fe2O3/ZnSe NC accomplished a higher and enhanced photocatalytic response. The key rationale for elevated photocatalytic response is the establishment of a recombination-free configuration (type-II heterostructure). Thus, α-Fe2O3/ZnSe NC known as one of outstanding nanoparticle-nanocomposite photocatalysts was synthesized under mild conditions exclusive of some multifaceted post-treatment, for dye abatement process.
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Affiliation(s)
- Rooha Khurram
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Zhan Wang
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China.
| | - Muhammad Fahad Ehsan
- Department of Chemistry, School of Natural Sciences (SNS), National University Of Sciences And Technology (NUST), H-12, Islamabad, 44000, Pakistan.
- Department of Chemistry, Cape Breton University, 1250 Grand Lake Road, Sydney, NS, B1P 6L2, Canada.
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16
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Assadullah I, Zaman MB, Malik KA, Malik JH, Bhat AA, Tomar R. Growth and properties of hydrothermally derived crystalline ZnSe quantum dots. Environ Sci Pollut Res Int 2021; 28:3953-3959. [PMID: 33025437 DOI: 10.1007/s11356-020-11026-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Accepted: 09/27/2020] [Indexed: 06/11/2023]
Abstract
Chalcogenide nanostructures are the materials with diverse applications. Here, we report rapid hydrothermal synthesis of crystalline ZnSe quantum dots (QDs), avoiding the use of toxic chemicals. To the best of our knowledge, this is the first report on very rapid (5 h) hydrothermal synthesis of pristine ZnSe QDs. Elemental selenium is used as a source for selenium. Structural, morphological, compositional, and optical properties of the semiconductor were studied. Structural properties (X-ray diffraction) demonstrate that the particles have grown in a single cubic phase. Morphological studies show formation of agglomerated QDs (4 nm). The material possess stoichiometric ratio of the constituent elements that are uniformly distributed. Selected area electron diffraction (SAED) study indicated the material is polycrystalline in nature. Optical properties demonstrated that the QDs are suitable for optoelectronic devices exhibiting room temperature photoluminescence. Commission Internationale de l'Éclairage (CIE) chromaticity diagram shows the material exhibits violet emission and hence suitable for violet LEDs that have potential ability in clinical applications.
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Affiliation(s)
- Insaaf Assadullah
- School of Studies in Chemistry, Jiwaji University, Gwalior, 474011, India
| | - M Burhanuz Zaman
- School of Studies in Physics, Jiwaji University, Gwalior, 474011, India.
| | | | - Javied Hamid Malik
- School of Studies in Chemistry, Jiwaji University, Gwalior, 474011, India
| | - Aadil Ahmad Bhat
- School of Studies in Chemistry, Jiwaji University, Gwalior, 474011, India
| | - Radha Tomar
- School of Studies in Chemistry, Jiwaji University, Gwalior, 474011, India
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17
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Liu Y, Bai G, Lyu Y, Hua Y, Ye R, Zhang J, Chen L, Xu S, Hao J. Ultrabroadband Tuning and Fine Structure of Emission Spectra in Lanthanide Er-Doped ZnSe Nanosheets for Display and Temperature Sensing. ACS Nano 2020; 14:16003-16012. [PMID: 33185085 DOI: 10.1021/acsnano.0c07547] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Realizing multicolored luminescence in two-dimensional (2D) nanomaterials would afford potential for a range of next-generation nanoscale optoelectronic devices. Moreover, combining fine structured spectral line emission and detection may further enrich the studies and applications of functional nanomaterials. Herein, a lanthanide doping strategy has been utilized for the synthesis of 2D ZnSe:Er3+ nanosheets to achieve fine-structured, multicolor luminescence spectra. Simultaneous upconversion and downconversion emission is realized, which can cover an ultrabroadband optical range, from ultraviolet through visible to the near-infrared region. By investigating the low-temperature fine structure of emission spectra at 4 K, we have observed an abundance of sublevel electronic energy transitions, elucidating the electronic structure of Er3+ ions in the 2D ZnSe nanosheet. As the temperature is varied, these nanosheets exhibit tunable multicolored luminescence under 980 and 365 nm excitation. Utilizing the distinct sublevel transitions of Er3+ ions, the developed 2D ZnSe:Er3+ optical temperature sensor shows high absolute (15.23% K-1) and relative sensitivity (8.61% K-1), which is superior to conventional Er3+-activated upconversion luminescent nanothermometers. These findings imply that Er3+-doped ZnSe nanomaterials with direct and wide band gap have the potential for applications in future low-dimensional photonic and sensing devices at the 2D limit.
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Affiliation(s)
- Yuan Liu
- Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, People's Republic of China
| | - Gongxun Bai
- Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, People's Republic of China
| | - Yongxin Lyu
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, People's Republic of China
| | - Youjie Hua
- Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, People's Republic of China
- College of Optics and Electronic Technology, China Jiliang University, Hangzhou 310018, People's Republic of China
| | - Renguang Ye
- Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, People's Republic of China
| | - Junjie Zhang
- College of Optics and Electronic Technology, China Jiliang University, Hangzhou 310018, People's Republic of China
| | - Liang Chen
- College of Optics and Electronic Technology, China Jiliang University, Hangzhou 310018, People's Republic of China
| | - Shiqing Xu
- Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, People's Republic of China
| | - Jianhua Hao
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong, People's Republic of China
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18
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Dong C, Wu L, He Y, Zhou Y, Sun X, Du W, Sun X, Xu L, Jiang F. Willow-Leaf-Like ZnSe@N-Doped Carbon Nanoarchitecture as a Stable and High-Performance Anode Material for Sodium-Ion and Potassium-Ion Batteries. Small 2020; 16:e2004580. [PMID: 33136335 DOI: 10.1002/smll.202004580] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 09/08/2020] [Indexed: 06/11/2023]
Abstract
ZnSe is regarded as a promising anode material for energy storage due to its high theoretical capacity and environment friendliness. Nevertheless, it is still a significant challenge to obtain superior electrode materials with stable performance owing to the serious volume change and aggregation upon cycling. Herein, a willow-leaf-like nitrogen-doped carbon-coated ZnSe (ZnSe@NC) composite synthesized through facile solvothermal and subsequent selenization process is beneficial to expose more active sites and facilitate the fast electron/ion transmission. These merits significantly enhance the electrochemical performances of ZnSe@NC for sodium-ion batteries (SIBs) and potassium-ion batteries (PIBs). The obtained ZnSe@NC exhibits outstanding rate performance (440.3 mAh g-1 at 0.1 A g-1 and 144.4 mAh g-1 at 10 A g-1 ) and ultralong cycle stability (242.2 mAh g-1 at 8.0 A g-1 even after 3200 cycles) for SIBs. It is noted that 106.5 mAh g-1 can be retained after 550 cycles and 71.4 mAh g-1 is still remained after 1500 cycles at 200 mA g-1 when applied as anode for PIBs, indicating good cycle stability of the electrode. The possible electrochemical mechanism and the ionic diffusion kinetics of the ZnSe@NC are investigated using ex situ X-ray diffraction, high-resolution transmission electron microscopy, and a series of electrochemical analyses.
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Affiliation(s)
- Caifu Dong
- School of Environmental and Material Engineering, Yantai University, Yantai, 264005, P. R. China
| | - Leqiang Wu
- School of Environmental and Material Engineering, Yantai University, Yantai, 264005, P. R. China
| | - Yanyan He
- Key Laboratory of Fine Chemicals in Universities of Shandong, School of Chemistry and Pharmaceutical Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, P. R. China
| | - Yanli Zhou
- School of Environmental and Material Engineering, Yantai University, Yantai, 264005, P. R. China
| | - Xiuping Sun
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Wei Du
- School of Environmental and Material Engineering, Yantai University, Yantai, 264005, P. R. China
| | - Xueqin Sun
- School of Environmental and Material Engineering, Yantai University, Yantai, 264005, P. R. China
| | - Liqiang Xu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Fuyi Jiang
- School of Environmental and Material Engineering, Yantai University, Yantai, 264005, P. R. China
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19
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Sier D, Cousland GP, Trevorah RM, Ekanayake RSK, Tran CQ, Hester JR, Chantler CT. High accuracy determination of photoelectric cross sections, X-ray absorption fine structure and nanostructure analysis of zinc selenide using the X-ray extended range technique. J Synchrotron Radiat 2020; 27:1262-1277. [PMID: 32876602 DOI: 10.1107/s1600577520010097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 07/21/2020] [Indexed: 06/11/2023]
Abstract
Measurements of mass attenuation coefficients and X-ray absorption fine structure (XAFS) of zinc selenide (ZnSe) are reported to accuracies typically better than 0.13%. The high accuracy of the results presented here is due to our successful implementation of the X-ray extended range technique, a relatively new methodology, which can be set up on most synchrotron X-ray beamlines. 561 attenuation coefficients were recorded in the energy range 6.8-15 keV with measurements concentrated at the zinc and selenium pre-edge, near-edge and fine-structure absorption edge regions. This accuracy yielded detailed nanostructural analysis of room-temperature ZnSe with full uncertainty propagation. Bond lengths, accurate to 0.003 Å to 0.009 Å, or 0.1% to 0.3%, are plausible and physical. Small variation from a crystalline structure suggests local dynamic motion beyond that of a standard crystal lattice, noting that XAFS is sensitive to dynamic correlated motion. The results obtained in this work are the most accurate to date with comparisons with theoretically determined values of the attenuation showing discrepancies from literature theory of up to 4%, motivating further investigation into the origin of such discrepancies.
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Affiliation(s)
- Daniel Sier
- School of Physics, University of Melbourne, Australia
| | | | | | | | | | - James R Hester
- Australian Nuclear Science and Technology Organisation, Menai, Australia
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20
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Cunningham PD, Coropceanu I, Mulloy K, Cho W, Talapin DV. Quantized Reaction Pathways for Solution Synthesis of Colloidal ZnSe Nanostructures: A Connection between Clusters, Nanowires, and Two-Dimensional Nanoplatelets. ACS Nano 2020; 14:3847-3857. [PMID: 32105062 DOI: 10.1021/acsnano.9b09051] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The morphology of nanocrystals serves as a powerful handle to modulate their functional properties. For semiconducting nanostructures, the shape is no less important than the size and composition, in terms of determining the electronic structure. For example, in the case of nanoplatelets (NPLs), their two-dimensional (2D) electronic structure and atomic precision along the axis of quantum confinement makes them well-suited as pure color emitters and optical gain media. In this study, we describe synthetic efforts to develop ZnSe NPLs emitting in the ultraviolet part of the spectrum. We focus on two populations of NPLs, the first having a sharp absorption onset at 345 nm and a previously unreported species with an absorption onset at 380 nm. Interestingly, we observe that the nanoplatelets are one step in a quantized reaction pathway that starts with (zero-dimensional (0D)) magic-sized clusters, then proceeds through the formation of (one-dimensional (1D)) nanowires toward the (2D) "345 nm" species of NPLs, which finally interconvert into the "380 nm" NPL species. We seek to rationalize this evolution of the morphology, in terms of a general free-energy landscape, which, under reaction control, allows for the isolation of well-defined structures, while thermodynamic control leads to the formation of three-dimensional (3D) nanocrystals.
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Affiliation(s)
- Patrick D Cunningham
- Department of Chemistry and James Franck Institute, University of Chicago, Chicago, Illinois 60637, United States
| | - Igor Coropceanu
- Department of Chemistry and James Franck Institute, University of Chicago, Chicago, Illinois 60637, United States
| | - Kavan Mulloy
- Department of Chemistry and James Franck Institute, University of Chicago, Chicago, Illinois 60637, United States
| | - Wooje Cho
- Department of Chemistry and James Franck Institute, University of Chicago, Chicago, Illinois 60637, United States
| | - Dmitri V Talapin
- Department of Chemistry and James Franck Institute, University of Chicago, Chicago, Illinois 60637, United States
- Center for Nanoscale Materials, Argonne National Laboratory, Argonne, Illinois 60439, United States
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21
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Zhang K, Abbas Y, Jan SU, Gao L, Ma Y, Mi Z, Liu X, Xuan Y, Gong JR. Selective Growth of Stacking Fault Free ⟨100⟩ Nanowires on a Polycrystalline Substrate for Energy Conversion Application. ACS Appl Mater Interfaces 2020; 12:17676-17685. [PMID: 32212680 DOI: 10.1021/acsami.9b20952] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Cubic semiconductor nanowires grown along ⟨100⟩ directions have been reported to be promising for optoelectronics and energy conversion applications, owing to their pure zinc-blende structure without any stacking fault. But, until date, only limited success has been achieved in growing ⟨100⟩ oriented nanowires. Here we report the selective growth of stacking fault free ⟨100⟩ nanowires on a commercial transparent conductive polycrystalline fluorine-doped SnO2 (FTO) glass substrate via a simple and cost-effective chemical vapor deposition (CVD) method. By means of crystallographic analysis and density functional theory calculation, we prove that the orientation relationship between the Au catalyst and the FTO substrate play a vital role in inducing the selective growth of ⟨100⟩ nanowires, which opens a new pathway for controlling the growth directions of nanowires via the elaborate selection of the catalyst and substrate couples during the vapor-solid-liquid (VLS) growth process. The ZnSe nanowires grown on the FTO substrate are further applied as a photoanode in photoelectrochemical (PEC) water splitting. It exhibits a higher photocurrent than the ZnSe nanowires do without preferential orientations on a Sn-doped In2O3 (ITO) glass substrate, which we believe to be correlated with the smooth transport of charge carriers in ZnSe ⟨100⟩ nanowires with pure zinc-blende structures, in distinct contrast with the severe electron scattering happened at the stacking faults in ZnSe nanowires on the ITO substrate, as well as the efficient charge transfer across the intensively interacting nanowire-substrate interfaces.
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Affiliation(s)
- Kai Zhang
- School of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
| | - Yasir Abbas
- Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190, P. R. China
| | - Saad Ullah Jan
- Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190, P. R. China
| | - Lei Gao
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Yuan Ma
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Zhishan Mi
- Beijing Advanced Innovation Center for Materials Genome Engineering, Institute for Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, P. R. China
| | - Xianglei Liu
- School of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
| | - Yimin Xuan
- School of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P. R. China
| | - Jian Ru Gong
- Chinese Academy of Sciences (CAS) Center for Excellence in Nanoscience, CAS Key Laboratory of Nanosystem and Hierarchy Fabrication, National Center for Nanoscience and Technology, Beijing 100190, P. R. China
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22
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Bratskaya S, Sergeeva K, Konovalova M, Modin E, Svirshchevskaya E, Sergeev A, Mironenko A, Pestov A. Ligand-assisted synthesis and cytotoxicity of ZnSe quantum dots stabilized by N-(2-carboxyethyl)chitosans. Colloids Surf B Biointerfaces 2019; 182:110342. [PMID: 31299538 DOI: 10.1016/j.colsurfb.2019.06.071] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 05/31/2019] [Accepted: 06/29/2019] [Indexed: 12/18/2022]
Abstract
Here we report a green synthesis of ZnSe quantum dots (QDs) in aqueous solution of polyampholyte chitosan derivative - N-(2-carboxyethyl)chitosan (CEC) with substitution degrees (DS) from 0.7 to 1.3 and molecular weight (MW) of 40 kDa and 150 kDa. We have shown that the maximum intensity of photoluminescence (PL) is exhibited by ZnSe QDs synthesized in solutions of CEC with DS 1 at Se:Zn molar ratio 1:2.5. The defect-related band was predominant in the PL spectra of ZnSe QDs obtained at room temperature; however, hydrothermal treatment at 80-150 °C during 1-2 h significantly increased contribution of exciton emission to the spectra. Cytotoxicity of ZnSe QDs was investigated by MTT assay using cancer cell lines SKOV-3; SkBr-3; PANC-1; Colon-26 and human embryonic kidney cell line HEK293. Cytotoxicity of ZnSe QDs did not depend on MW or DS of CEC but significantly depended on the cell line, being the lowest for normal human cells HEK293 and breast cancer cell line SKOV-3. The hydrothermally treated ZnSe QDs showed higher toxicity toward both normal and cancer cell lines. Since ZnSe QDs were toxic for most of the investigated cancer cell lines, they cannot be used as inert tracers for bioimaging, but can be promising for further investigation for anticancer therapy.
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Affiliation(s)
- Svetlana Bratskaya
- Institute of Chemistry, Far Eastern Branch of RAS, 159, prosp.100-letiya Vladivostoka, Vladivostok, 690022, Russia.
| | - Kseniya Sergeeva
- Institute of Automation and Control Processes, Far Eastern Branch of RAS, 5, Radio Str., Vladivostok, 690041, Russia
| | - Mariya Konovalova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, RAS, 16/10, Miklukho-Maklaya Str., Moscow, 117997, Russia
| | - Evgeny Modin
- CIC nanoGUNE, Donostia - San Sebastian, 20018, Spain
| | - Elena Svirshchevskaya
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, RAS, 16/10, Miklukho-Maklaya Str., Moscow, 117997, Russia
| | - Alexander Sergeev
- Institute of Automation and Control Processes, Far Eastern Branch of RAS, 5, Radio Str., Vladivostok, 690041, Russia
| | - Aleksandr Mironenko
- Institute of Chemistry, Far Eastern Branch of RAS, 159, prosp.100-letiya Vladivostoka, Vladivostok, 690022, Russia
| | - Alexandr Pestov
- I. Ya. Postovsky Institute of Organic Synthesis, Ural Branch of RAS, 20, S. Kovalevskoy Str., Yekaterinburg, 620990, Russia
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23
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Jeong SY, Cho JS. Porous Hybrid Nanofibers Comprising ZnSe/CoSe₂/Carbon with Uniformly Distributed Pores as Anodes for High-Performance Sodium-Ion Batteries. Nanomaterials (Basel) 2019; 9:E1362. [PMID: 31547558 PMCID: PMC6835312 DOI: 10.3390/nano9101362] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 09/16/2019] [Accepted: 09/18/2019] [Indexed: 11/24/2022]
Abstract
Well-designed porous structured bimetallic ZnSe/CoSe₂/carbon composite nanofibers with uniformly distributed pores were prepared as anodes for sodium-ion batteries by electrospinning and subsequent simple heat-treatment processes. Size-controlled polystyrene (PS) nanobeads in the electrospinning solution played a key role in the formation and uniform distribution of pores in the nanofiber structure, after the removal of selected PS nanobeads during the heat-treatment process. The porous ZnSe/CoSe₂/C composite nanofibers were able to release severe mechanical stress/strain during discharge-charge cycles, introduce larger contact area between the active materials and the electrolyte, and provide more active sites during cycling. The discharge capacity of porous ZnSe/CoSe2/C composite nanofibers at the 10,000th cycle was 297 mA h g-1, and the capacity retention measured from the second cycle was 81%. The final rate capacities of porous ZnSe/CoSe2/C composite nanofibers were 438, 377, 367, 348, 335, 323, and 303 mA h g-1 at current densities of 0.1, 0.5, 1, 3, 5, 7, and 10 A g-1, respectively. At the higher current densities of 10, 20, and 30 A g-1, the final rate capacities were 310, 222, and 141 mA h g-1, respectively.
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Affiliation(s)
- Sun Young Jeong
- Department of Engineering Chemistry, Chungbuk National University, Chungbuk 361-763, Korea.
| | - Jung Sang Cho
- Department of Engineering Chemistry, Chungbuk National University, Chungbuk 361-763, Korea.
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24
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Zhou P, Zhang M, Wang L, Huang Q, Su Z, Li L, Wang X, Li Y, Zeng C, Guo Z. Synthesis and Electrochemical Performance of ZnSe Electrospinning Nanofibers as an Anode Material for Lithium Ion and Sodium Ion Batteries. Front Chem 2019; 7:569. [PMID: 31475135 PMCID: PMC6702676 DOI: 10.3389/fchem.2019.00569] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2019] [Accepted: 07/26/2019] [Indexed: 11/13/2022] Open
Abstract
ZnSe nitrogen-doped carbon composite nanofibers (ZnSe@N-CNFs) were derived as anode materials from selenization of electrospinning nanofibers. Electron microscopy shows that ZnSe nanoparticles are distributed in electrospinning nanofibers after selenization. Electrochemistry tests were carried out and the results show the one-dimensional carbon composite nanofibers reveal a great structural stability and electrochemistry performance by the enhanced synergistic effect with ZnSe. Even at a current density of 2 A g-1, the as-prepared electrodes can still reach up to 701.7 mA h g-1 after 600 cycles in lithium-ion batteries and 368.9 mA h g-1 after 200 cycles in sodium-ion batteries, respectively. ZnSe@N-CNFs with long cycle life and high capacity at high current density implies its promising future for the next generation application of energy storage.
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Affiliation(s)
- Peng Zhou
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China
| | - Mingyu Zhang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China
| | - Liping Wang
- Department of Biological and Environmental Engineering, Changsha University, Changsha, China
| | - Qizhong Huang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China
| | - Zhean Su
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China
| | - Liewu Li
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China
| | - Xiaodong Wang
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China
| | - Yuhao Li
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China
| | - Chen Zeng
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China
| | - Zhenghao Guo
- State Key Laboratory of Powder Metallurgy, Central South University, Changsha, China
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25
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Ben-Zvi R, Burrows H, Schvartzman M, Bitton O, Pinkas I, Kaplan-Ashiri I, Brontvein O, Joselevich E. In-Plane Nanowires with Arbitrary Shapes on Amorphous Substrates by Artificial Epitaxy. ACS Nano 2019; 13:5572-5582. [PMID: 30995393 PMCID: PMC6994061 DOI: 10.1021/acsnano.9b00538] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 04/17/2019] [Indexed: 06/09/2023]
Abstract
The challenge of nanowire assembly is still one of the major obstacles toward their efficient integration into functional systems. One strategy to overcome this obstacle is the guided growth approach, in which the growth of in-plane nanowires is guided by epitaxial and graphoepitaxial relations with the substrate to yield dense arrays of aligned nanowires. This method relies on crystalline substrates which are generally expensive and incompatible with silicon-based technologies. In this work, we expand the guided growth approach into noncrystalline substrates and demonstrate the guided growth of horizontal nanowires along straight and arbitrarily shaped amorphous nanolithographic open guides on silicon wafers. Nanoimprint lithography is used as a high-throughput method for the fabrication of the high-resolution guiding features. We first grow five different semiconductor materials (GaN, ZnSe, CdS, ZnTe, and ZnO) along straight ridges and trenches, demonstrating the generality of this method. Through crystallographic analysis we find that despite the absence of any epitaxial relations with the substrate, the nanowires grow as single crystals in preferred crystallographic orientations. To further expand the guided growth approach beyond straight nanowires, GaN and ZnSe were grown also along curved and kinked configurations to form different shapes, including sinusoidal and zigzag-shaped nanowires. Photoluminescence and cathodoluminescence were used as noninvasive tools to characterize the sine wave-shaped nanowires. We discuss the similarities and differences between in-plane nanowires grown by epitaxy/graphoepitaxy and artificial epitaxy in terms of generality, morphology, crystallinity, and optical properties.
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Affiliation(s)
- Regev Ben-Zvi
- Departments
of Materials and Interfaces and Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Hadassah Burrows
- Departments
of Materials and Interfaces and Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Mark Schvartzman
- Departments
of Materials and Interfaces and Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Ora Bitton
- Departments
of Materials and Interfaces and Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Iddo Pinkas
- Departments
of Materials and Interfaces and Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Ifat Kaplan-Ashiri
- Departments
of Materials and Interfaces and Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Olga Brontvein
- Departments
of Materials and Interfaces and Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Ernesto Joselevich
- Departments
of Materials and Interfaces and Department of Chemical Research Support, Weizmann Institute of Science, Rehovot 7610001, Israel
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26
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Li X, Yang J, Jiang Q, Lai H, Li S, Xin J, Chu W, Hou J. Low-Temperature Solution-Processed ZnSe Electron Transport Layer for Efficient Planar Perovskite Solar Cells with Negligible Hysteresis and Improved Photostability. ACS Nano 2018; 12:5605-5614. [PMID: 29741863 DOI: 10.1021/acsnano.8b01351] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
For a typical perovskite solar cell (PKSC), the electron transport layer (ETL) has a great effect on device performance and stability. Herein, we manifest that low-temperature solution-processed ZnSe can be used as a potential ETL for PKSCs. Our optimized device with ZnSe ETL has achieved a high power conversion efficiency (PCE) of 17.78% with negligible hysteresis, compared with the TiO2 based cell (13.76%). This enhanced photovoltaic performance is attributed to the suitable band alignment, high electron mobility, and reduced charge accumulation at the interface of ETL/perovskite. Encouraging results were obtained when the thin layer of ZnSe cooperated with TiO2. It shows that the device based on the TiO2/ZnSe ETL with cascade conduction band level can effectively reduce the interfacial charge recombination and promote carrier transfer with the champion PCE of 18.57%. In addition, the ZnSe-based device exhibits a better photostability than the control device due to the greater ultraviolet (UV) light harvesting of the ZnSe layer, which can efficiently prevent the perovskite film from intense UV-light exposure to avoid associated degradation. Consequently, our results present that a promising ETL can be a potential candidate of the n-type ETL for commercialization of efficient and photostable PKSCs.
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Affiliation(s)
- Xin Li
- State Key Laboratory of Material Processing and Die and Mould Technology , Huazhong University of Science and Technology , Wuhan 430074 , P. R. China
- Shenzhen Institute of Huazhong University of Science and Technology , Shenzhen 51800 , P. R. China
| | - Junyou Yang
- State Key Laboratory of Material Processing and Die and Mould Technology , Huazhong University of Science and Technology , Wuhan 430074 , P. R. China
- Shenzhen Institute of Huazhong University of Science and Technology , Shenzhen 51800 , P. R. China
| | - Qinghui Jiang
- State Key Laboratory of Material Processing and Die and Mould Technology , Huazhong University of Science and Technology , Wuhan 430074 , P. R. China
- Shenzhen Institute of Huazhong University of Science and Technology , Shenzhen 51800 , P. R. China
| | - Hui Lai
- State Key Laboratory of Material Processing and Die and Mould Technology , Huazhong University of Science and Technology , Wuhan 430074 , P. R. China
- China-Eu Institute for Clean and Renewable Energy , Huazhong University of Science and Technology , Wuhan 430074 , P. R. China
- Shenzhen Institute of Huazhong University of Science and Technology , Shenzhen 51800 , P. R. China
| | - Shuiping Li
- State Key Laboratory of Material Processing and Die and Mould Technology , Huazhong University of Science and Technology , Wuhan 430074 , P. R. China
- Shenzhen Institute of Huazhong University of Science and Technology , Shenzhen 51800 , P. R. China
| | - Jiwu Xin
- State Key Laboratory of Material Processing and Die and Mould Technology , Huazhong University of Science and Technology , Wuhan 430074 , P. R. China
- Shenzhen Institute of Huazhong University of Science and Technology , Shenzhen 51800 , P. R. China
| | - Weijing Chu
- State Key Laboratory of Material Processing and Die and Mould Technology , Huazhong University of Science and Technology , Wuhan 430074 , P. R. China
- Shenzhen Institute of Huazhong University of Science and Technology , Shenzhen 51800 , P. R. China
| | - Jingdi Hou
- State Key Laboratory of Material Processing and Die and Mould Technology , Huazhong University of Science and Technology , Wuhan 430074 , P. R. China
- Shenzhen Institute of Huazhong University of Science and Technology , Shenzhen 51800 , P. R. China
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27
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Oksenberg E, Martí-Sánchez S, Popovitz-Biro R, Arbiol J, Joselevich E. Surface-Guided Core-Shell ZnSe@ZnTe Nanowires as Radial p-n Heterojunctions with Photovoltaic Behavior. ACS Nano 2017; 11:6155-6166. [PMID: 28505415 DOI: 10.1021/acsnano.7b02199] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The organization of nanowires on surfaces remains a major obstacle toward their large-scale integration into functional devices. Surface-material interactions have been used, with different materials and substrates, to guide horizontal nanowires during their growth into well-organized assemblies, but the only guided nanowire heterostructures reported so far are axial and not radial. Here, we demonstrate the guided growth of horizontal core-shell nanowires, specifically of ZnSe@ZnTe, with control over their crystal phase and crystallographic orientations. We exploit the directional control of the guided growth for the parallel production of multiple radial p-n heterojunctions and probe their optoelectronic properties. The devices exhibit a rectifying behavior with photovoltaic characteristics upon illumination. Guided nanowire heterostructures enable the bottom-up assembly of complex semiconductor structures with controlled electronic and optoelectronic properties.
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Affiliation(s)
| | - Sara Martí-Sánchez
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology (BIST) , Campus UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
| | | | - Jordi Arbiol
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology (BIST) , Campus UAB, Bellaterra, 08193 Barcelona, Catalonia, Spain
- ICREA , Pg. Lluís Companys 23, 08010 Barcelona, Catalonia, Spain
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28
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Zedan IT, Azab AA, El-Menyawy EM. Structural, morphological and optical properties of ZnSe quantum dot thin films. Spectrochim Acta A Mol Biomol Spectrosc 2016; 154:171-176. [PMID: 26523684 DOI: 10.1016/j.saa.2015.10.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 07/22/2015] [Accepted: 10/22/2015] [Indexed: 06/05/2023]
Abstract
ZnSe powder was prepared via hydrothermal technique using zinc acetate and sodium selenite as source materials. The prepared ZnSe powder was used for preparing film with different thickness values (95, 135 and 230 nm) via thermal evaporation technique. X-ray diffraction showed that the prepared powder has cubic zinc-blende structure with a space group, F43m. The high resolution transmittance electron microscope results show that the films are composed of spherical-shaped nanoparticles with a diameter in the range of 2-8 nm. The optical properties of ZnSe films with differing thicknesses are investigated by means of spectrophotometric measurements of the photoluminescence, transmittance and reflectance. The absorption coefficient of the films is calculated and the optical band gap is estimated. The refractive index of the films is determined and its normal dispersion behavior is analyzed on the basis of a single oscillator model, in which oscillator energy, dispersion energy and dielectric constant at high frequency are evaluated. Drude model is also applied to determine the lattice dielectric constant and the ratio of the carriers' concentration to their effective mass.
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Affiliation(s)
- I T Zedan
- Basic Science Department, High Institute of Engineering and Technology, El-Arish, North Sinai, Egypt.
| | - A A Azab
- Solid State Electronics Laboratory, Solid State Physics Department, Physical Research Division, National Research Centre, 33 El-Bohouth St., Dokki, Giza 12622, Egypt
| | - E M El-Menyawy
- Solid State Electronics Laboratory, Solid State Physics Department, Physical Research Division, National Research Centre, 33 El-Bohouth St., Dokki, Giza 12622, Egypt
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29
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Cooper JK, Gul S, Lindley SA, Yano J, Zhang JZ. Tunable Photoluminescent Core/Shell Cu(+)-Doped ZnSe/ZnS Quantum Dots Codoped with Al(3+), Ga(3+), or In(3+). ACS Appl Mater Interfaces 2015; 7:10055-66. [PMID: 25893312 DOI: 10.1021/acsami.5b02860] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
Semiconductor quantum dots (QDs) with stable, oxidation resistant, and tunable photoluminescence (PL) are highly desired for various applications including solid-state lighting and biological labeling. However, many current systems for visible light emission involve the use of toxic Cd. Here, we report the synthesis and characterization of a series of codoped core/shell ZnSe/ZnS QDs with tunable PL maxima spanning 430-570 nm (average full width at half-maximum of 80 nm) and broad emission extending to 700 nm, through the use of Cu(+) as the primary dopant and trivalent cations (Al(3+), Ga(3+), and In(3+)) as codopants. Furthermore, we developed a unique thiol-based bidentate ligand that significantly improved PL intensity, long-term stability, and resilience to postsynthetic processing. Through comprehensive experimental and computational studies based on steady-state and time-resolved spectroscopy, electron microscopy, and density functional theory (DFT), we show that the tunable PL of this system is the result of energy level modification to donor and/or acceptor recombination pathways. By incorporating these findings with local structure information obtained from extended X-ray absorption fine structure (EXAFS) studies, we generate a complete energetic model accounting for the photophysical processes in these unique QDs. With the understanding of optical, structural, and electronic properties we gain in this study, this successful codoping strategy may be applied to other QD or related systems to tune the optical properties of semiconductors while maintaining low toxicity.
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Affiliation(s)
- Jason K Cooper
- †Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
- ‡Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Sheraz Gul
- †Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
- §Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Sarah A Lindley
- †Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
| | - Junko Yano
- §Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
| | - Jin Z Zhang
- †Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, United States
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30
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Abstract
In this work, we have developed novel hybrid quantum dot gels based on the controllable and reversible assembly of nanoparticles via metal-tetrazole complexation. Combining in one hybrid network nanocrystals of different semiconductors (ZnSe and CdTe) as well as quantum dots of different sizes (green and red emitting CdTe) with different band gaps, we have examined energy relations within these systems and act out a facile route to the color design of the resulting gels. Efficient energy pumping from donor quantum dots to acceptors leads to a remarkable enhancement of the emission intensity of the gel. Furthermore, by integrating three different quantum dot types into one network, we obtained a white-light-emitting aerogel.
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Affiliation(s)
- André Wolf
- Physical Chemistry, TU Dresden, Bergstr. 66b, 01062 Dresden, Germany
| | - Vladimir Lesnyak
- Physical Chemistry, TU Dresden, Bergstr. 66b, 01062 Dresden, Germany
| | - Nikolai Gaponik
- Physical Chemistry, TU Dresden, Bergstr. 66b, 01062 Dresden, Germany
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31
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Li X, Scott T, Cromer C, Hadler J. Reflective Optical Chopper Used in NIST High-Power Laser Measurements. J Res Natl Inst Stand Technol 2008; 113:305-9. [PMID: 27096130 PMCID: PMC4652863 DOI: 10.6028/jres.113.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Accepted: 09/29/2008] [Indexed: 06/05/2023]
Abstract
For the past ten years, NIST has used high-reflectivity, optical choppers as beamsplitters and attenuators when calibrating the absolute responsivity and response linearity of detectors used with high-power CW lasers. The chopper-based technique has several advantages over the use of wedge-shaped transparent materials (usually crystals) often used as beam splitters in this type of measurement system. We describe the design, operation and calibration of these choppers. A comparison between choppers and transparent wedge beampslitters is also discussed.
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Affiliation(s)
- Xiaoyu Li
- National Institute of Standards and Technology, Boulder, CO 80305
| | - Thomas Scott
- National Institute of Standards and Technology, Boulder, CO 80305
| | - Chris Cromer
- National Institute of Standards and Technology, Boulder, CO 80305
| | - Joshua Hadler
- National Institute of Standards and Technology, Boulder, CO 80305
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