1
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Yang Z, Wu Z, Hua W, Xiao Y, Wang G, Liu Y, Wu C, Li Y, Zhong B, Xiang W, Zhong Y, Guo X. Hydrangea-Like CuS with Irreversible Amorphization Transition for High-Performance Sodium-Ion Storage. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:1903279. [PMID: 32537402 PMCID: PMC7284207 DOI: 10.1002/advs.201903279] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 03/03/2020] [Accepted: 03/10/2020] [Indexed: 05/19/2023]
Abstract
Metal sulfides have been intensively investigated for efficient sodium-ion storage due to their high capacity. However, the mechanisms behind the reaction pathways and phase transformation are still unclear. Moreover, the effects of designed nanostructure on the electrochemical behaviors are rarely reported. Herein, a hydrangea-like CuS microsphere is prepared via a facile synthetic method and displays significantly enhanced rate and cycle performance. Unlike the traditional intercalation and conversion reactions, an irreversible amorphization process is evidenced and elucidated with the help of in situ high-resolution synchrotron radiation diffraction analyses, and transmission electron microscopy. The oriented (006) crystal plane growth of the primary CuS nanosheets provide more channels and adsorption sites for Na ions intercalation and the resultant low overpotential is beneficial for the amorphous Cu-S cluster, which is consistent with the density functional theory calculation. This study can offer new insights into the correlation between the atomic-scale phase transformation and macro-scale nanostructure design and open a new principle for the electrode materials' design.
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Affiliation(s)
- Zu‐Guang Yang
- School of Chemical EngineeringSichuan UniversityChengdu610065P. R. China
| | - Zhen‐Guo Wu
- School of Chemical EngineeringSichuan UniversityChengdu610065P. R. China
| | - Wei‐Bo Hua
- Institute for Applied Materials (IAM)Karlsruhe Institute of Technology (KIT)Hermann‐von‐Helmholtz‐Platz 1Eggenstein‐Leopoldshafen76344Germany
| | - Yao Xiao
- School of Chemical EngineeringSichuan UniversityChengdu610065P. R. China
| | - Gong‐Ke Wang
- School of Materials Science and EngineeringHenan Normal UniversityXinxiang453007P. R. China
| | - Yu‐Xia Liu
- The Key Laboratory of Life‐Organic AnalysisKey Laboratory of Pharmaceutical Intermediates and Analysis of Natural MedicineSchool of Chemistry and Chemical EngineeringQufu Normal UniversityQufu273165P. R. China
| | - Chun‐Jin Wu
- School of Chemical EngineeringSichuan UniversityChengdu610065P. R. China
| | - Yong‐Chun Li
- School of Chemical EngineeringSichuan UniversityChengdu610065P. R. China
| | - Ben‐He Zhong
- School of Chemical EngineeringSichuan UniversityChengdu610065P. R. China
| | - Wei Xiang
- College of Materials and Chemistry &Chemical EngineeringChengdu University of TechnologyChengdu610059P. R. China
| | - Yan‐Jun Zhong
- School of Chemical EngineeringSichuan UniversityChengdu610065P. R. China
| | - Xiao‐Dong Guo
- School of Chemical EngineeringSichuan UniversityChengdu610065P. R. China
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2
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Liu W, Shen L, Shai X, Sun L, Lu J, Chen J, Ge W, Deng S. High-performance and low thermal conductivity in nano-layered Cu2Se prepared by a NaCl-flux method. CrystEngComm 2019. [DOI: 10.1039/c9ce01258c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this study, a nano-layered Cu2Se high-performance material is successfully grown using a NaCl-flux method based on the stoichiometric ratios of Cu2Se(NaCl)x (x = 1.5, 2, 2.5, 3, and 3.5).
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Affiliation(s)
- Wenting Liu
- Education Ministry Key Laboratory of Renewable Energy Advanced Materials and Manufacturing Technology
- Yunnan Normal University
- Kunming 650500
- China
| | - Lanxian Shen
- Education Ministry Key Laboratory of Renewable Energy Advanced Materials and Manufacturing Technology
- Yunnan Normal University
- Kunming 650500
- China
| | - Xuxia Shai
- Physics, Electronics and Science College
- Kunming University of Science and Technology
- Kunming 650500
- China
| | - Luqi Sun
- Education Ministry Key Laboratory of Renewable Energy Advanced Materials and Manufacturing Technology
- Yunnan Normal University
- Kunming 650500
- China
| | - Jianhua Lu
- Education Ministry Key Laboratory of Renewable Energy Advanced Materials and Manufacturing Technology
- Yunnan Normal University
- Kunming 650500
- China
| | - Jiali Chen
- Education Ministry Key Laboratory of Renewable Energy Advanced Materials and Manufacturing Technology
- Yunnan Normal University
- Kunming 650500
- China
| | - Wen Ge
- Education Ministry Key Laboratory of Renewable Energy Advanced Materials and Manufacturing Technology
- Yunnan Normal University
- Kunming 650500
- China
| | - Shukang Deng
- Education Ministry Key Laboratory of Renewable Energy Advanced Materials and Manufacturing Technology
- Yunnan Normal University
- Kunming 650500
- China
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3
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Lin Z, Hollar C, Kang JS, Yin A, Wang Y, Shiu HY, Huang Y, Hu Y, Zhang Y, Duan X. A Solution Processable High-Performance Thermoelectric Copper Selenide Thin Film. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1606662. [PMID: 28370460 DOI: 10.1002/adma.201606662] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 02/15/2017] [Indexed: 05/25/2023]
Abstract
A solid-state thermoelectric device is attractive for diverse technological areas such as cooling, power generation and waste heat recovery with unique advantages of quiet operation, zero hazardous emissions, and long lifetime. With the rapid growth of flexible electronics and miniature sensors, the low-cost flexible thermoelectric energy harvester is highly desired as a potential power supply. Herein, a flexible thermoelectric copper selenide (Cu2 Se) thin film, consisting of earth-abundant elements, is reported. The thin film is fabricated by a low-cost and scalable spin coating process using ink solution with a truly soluble precursor. The Cu2 Se thin film exhibits a power factor of 0.62 mW/(m K2 ) at 684 K on rigid Al2 O3 substrate and 0.46 mW/(m K2 ) at 664 K on flexible polyimide substrate, which is much higher than the values obtained from other solution processed Cu2 Se thin films (<0.1 mW/(m K2 )) and among the highest values reported in all flexible thermoelectric films to date (≈0.5 mW/(m K2 )). Additionally, the fabricated thin film shows great promise to be integrated with the flexible electronic devices, with negligible performance change after 1000 bending cycles. Together, the study demonstrates a low-cost and scalable pathway to high-performance flexible thin film thermoelectric devices from relatively earth-abundant elements.
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Affiliation(s)
- Zhaoyang Lin
- Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA
| | - Courtney Hollar
- Department of Mechanical and Biomedical Engineering, Boise State University, ID, 83725, USA
| | - Joon Sang Kang
- Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, CA, 90095, USA
| | - Anxiang Yin
- Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA
| | - Yiliu Wang
- Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA
| | - Hui-Ying Shiu
- Department of Materials Science and Engineering, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA
| | - Yu Huang
- Department of Materials Science and Engineering, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA
| | - Yongjie Hu
- Department of Mechanical and Aerospace Engineering, University of California, Los Angeles, CA, 90095, USA
| | - Yanliang Zhang
- Department of Mechanical and Biomedical Engineering, Boise State University, ID, 83725, USA
| | - Xiangfeng Duan
- Department of Chemistry and Biochemistry, California NanoSystems Institute, University of California, Los Angeles, CA, 90095, USA
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4
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Cu6Se4.5 Nanoparticles from a single source precursor: Recyclable and efficient catalyst for cross-dehydrogenative coupling of tertiary amines with terminal alkynes. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.molcata.2016.06.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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5
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Yue L, Wang J, Qi S, Xin B. Extracellular synthesis of cuprous selenide nanospheres by a biological-chemical coupling reduction process in an anaerobic microbial system. Biotechnol Prog 2016; 32:1264-1270. [DOI: 10.1002/btpr.2332] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 07/08/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Lei Yue
- Department of Energy & Environment Material, School of Materials Science and Engineering; Beijing Institute of Technology; Beijing 100081 P.R. China
| | - Jia Wang
- Department of Energy & Environment Material, School of Materials Science and Engineering; Beijing Institute of Technology; Beijing 100081 P.R. China
| | - Shiyue Qi
- Department of Energy & Environment Material, School of Materials Science and Engineering; Beijing Institute of Technology; Beijing 100081 P.R. China
| | - Baoping Xin
- Department of Energy & Environment Material, School of Materials Science and Engineering; Beijing Institute of Technology; Beijing 100081 P.R. China
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6
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Butt S, Xu W, Farooq MU, Ren GK, Zhang Q, Zhu Y, Khan SU, Liu L, Yu M, Mohmed F, Lin Y, Nan CW. Enhanced Thermoelectricity in High-Temperature β-Phase Copper(I) Selenides Embedded with Cu2Te Nanoclusters. ACS APPLIED MATERIALS & INTERFACES 2016; 8:15196-15204. [PMID: 27135808 DOI: 10.1021/acsami.6b02086] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We report remarkably enhanced thermoelectric performance of Te doped Cu2Se in midtemperature range. Through ball-milling process followed by spark plasma sintering (SPS), nanoscale Cu2Te clusters were embeded in the matrix of Cu2Se, inducing a drastic enhancement of thermoelectric performance by reducing the thermal conductivity without degrading the power factor. A large ZT value of 1.9 was achieved at 873 K for Cu2Se1.9Te0.1, which is about 2 times larger than that of the pure Cu2Se. The nanoscale heat management by Cu2Te nanoclusters in superionic conductors opens up an avenue for thermoelectric materials research.
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Affiliation(s)
- Sajid Butt
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, People's Republic of China
- Department of Materials Science and Engineering, Institute of Space Technology , Islamabad 44000, Pakistan
| | - Wei Xu
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, P.R. China
- RICMASS, Rome International Center for Materials Science Superstripes, Via dei Sabelli 119A, 00185 Rome, Italy
| | - Muhammad U Farooq
- School of Materials Science and Engineering, University of Science and Technology Beijing , Beijing 100083, People's Republic of China
| | - Guang K Ren
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, People's Republic of China
| | - Qinghua Zhang
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, People's Republic of China
| | - Yingcai Zhu
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, P.R. China
| | - Sajid U Khan
- Department of Materials Science and Engineering, Institute of Space Technology , Islamabad 44000, Pakistan
| | - Lijuan Liu
- Department of Physics, Zhengzhou University , No. 100 Science Avenue, Zhengzhou, Henan 450001, P.R. China
| | - Meijuan Yu
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, P.R. China
| | - Fida Mohmed
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, People's Republic of China
| | - Yuanhua Lin
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, People's Republic of China
| | - Ce-Wen Nan
- State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University , Beijing 100084, People's Republic of China
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7
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Qiu W, Lu P, Yuan X, Xu F, Wu L, Ke X, Liu H, Yang J, Shi X, Chen L, Yang J, Zhang W. Structure family and polymorphous phase transition in the compounds with soft sublattice: Cu2Se as an example. J Chem Phys 2016; 144:194502. [DOI: 10.1063/1.4948609] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Wujie Qiu
- Department of Physics, East China Normal University, Shanghai 200241, China
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Ping Lu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
- CAS Key Laboratory of Energy conversion Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Xun Yuan
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
- CAS Key Laboratory of Energy conversion Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Fangfang Xu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Lihua Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Xuezhi Ke
- Department of Physics, East China Normal University, Shanghai 200241, China
| | - Huili Liu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
- CAS Key Laboratory of Energy conversion Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Jiong Yang
- Materials Genome Institute, Shanghai University, Shanghai 200444, China
| | - Xun Shi
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
- CAS Key Laboratory of Energy conversion Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Lidong Chen
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
- CAS Key Laboratory of Energy conversion Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
| | - Jihui Yang
- Materials Science and Engineering Department, University of Washington, Seattle, Washington 98195, USA
| | - Wenqing Zhang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
- Materials Genome Institute, Shanghai University, Shanghai 200444, China
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8
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Zhu L, Zhao Y, Zheng W, Ba N, Zhang G, Zhang J, Li X, Xie H, Bie L. One-step room temperature rapid synthesis of Cu2Se nanostructures, phase transformation, and formation of p-Cu2Se/p-Cu3Se2heterojunctions. CrystEngComm 2016. [DOI: 10.1039/c6ce00370b] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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9
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Liu B, Ning L, Zhao H, Zhang C, Yang H, Liu SF. Visible-light photocatalysis in Cu2Se nanowires with exposed {111} facets and charge separation between (111) and (1[combining macron]1[combining macron]1[combining macron]) polar surfaces. Phys Chem Chem Phys 2015; 17:13280-9. [PMID: 25920433 DOI: 10.1039/c5cp00450k] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The search for active narrow band gap semiconductor photocatalysts that directly split water or degrade organic pollutants under solar irradiation remains an open issue. We synthesized Cu2Se nanowires with exposed {111} facets using ethanol and glycerol as morphology controlling agents. The {111} facets were found to be the active facets for decomposing organic contaminants in the entire solar spectrum. Based on the polar structure of the Cu2Se {111} facets, a charge separation model between polar (111) and (1[combining macron]1[combining macron]1[combining macron]) surfaces is proposed. The internal electric field between polar (111) and (1[combining macron]1[combining macron]1[combining macron]) surfaces created by spontaneous polarization drives charge separation. The reduction and oxidation reactions occur on the positive (111) and negative (1[combining macron]1[combining macron]1[combining macron]) polar surfaces, respectively. This suggests the surface-engineering of narrow band gap semiconductors as a strategy to fabricate photocatalysts with high reactivity in the entire solar spectrum. The charge separation model can deepen the understanding of charge transfer in other semiconductor nanocrystals with high photocatalytic activities and offer guidance to design more effective photocatalysts as well as new types of solar cells, photoelectrodes and photoelectric devices.
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Affiliation(s)
- Bin Liu
- Key Laboratory of Macromolecular Science of Shaanxi Province, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China.
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10
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Zhang L, Zhao S, Li Y, Lan Y, Han M, Dai Z, Bao J. Monoclinic Copper(I) Selenide Nanocrystals and Copper(I) Selenide/Palladium Heterostructures: Synthesis, Characterization, and Surface-Enhanced Raman Scattering Performance. Eur J Inorg Chem 2015. [DOI: 10.1002/ejic.201500008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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11
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Aqueous preparation of surfactant-free copper selenide nanowires. J Colloid Interface Sci 2015; 442:140-6. [DOI: 10.1016/j.jcis.2014.11.052] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Revised: 11/16/2014] [Accepted: 11/20/2014] [Indexed: 11/18/2022]
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12
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Shu QW, Lan J, Gao MX, Wang J, Huang CZ. Controlled synthesis of CuS caved superstructures and their application to the catalysis of organic dye degradation in the absence of light. CrystEngComm 2015. [DOI: 10.1039/c4ce02120g] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
CuS caved superstructures with a variety of sizes and regular shapes were synthesized by an innovative one-pot method, which showed excellent catalytic properties evaluated by degradation of methylene blue (MB) without light.
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Affiliation(s)
- Qun Wei Shu
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715, PR China
| | - Jing Lan
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing 400715, PR China
| | - Ming Xuan Gao
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715, PR China
| | - Jian Wang
- College of Pharmaceutical Sciences
- Southwest University
- Chongqing 400715, PR China
| | - Cheng Zhi Huang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715, PR China
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13
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Wang W, Zhang L, Chen G, Jiang J, Ding T, Zuo J, Yang Q. Cu2−xSe nanooctahedra: controllable synthesis and optoelectronic properties. CrystEngComm 2015. [DOI: 10.1039/c4ce02343a] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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14
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Chen XQ, Li Z, Bai Y, Sun Q, Wang LZ, Dou SX. Room-temperature synthesis of Cu(2-x)E (E = S, Se) nanotubes with hierarchical architecture as high-performance counter electrodes of quantum-dot-sensitized solar cells. Chemistry 2014; 21:1055-63. [PMID: 25400022 DOI: 10.1002/chem.201405354] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Indexed: 11/11/2022]
Abstract
Copper chalcogenide nanostructures (e.g. one-dimensional nanotubes) have been the focus of interest because of their unique properties and great potential in various applications. Their current fabrications mainly rely on high-temperature or complicated processes. Here, with the assistance of theoretical prediction, we prepared Cu(2-x)E (E = S, Se) micro-/nanotubes (NTs) with a hierarchical architecture by using copper nanowires (Cu NWs), stable sulfur and selenium powder as precursors at room temperature. The influence of reaction parameters (e.g. precursor ratio, ligands, ligand ratio, and reaction time) on the formation of nanotubes was comprehensively investigated. The resultant Cu(2-x)E (E = S, Se) NTs were used as counter electrodes (CE) of quantum-dot-sensitized solar cells (QDSSCs) to achieve a conversion efficiency (η) of 5.02 and 6.25%, respectively, much higher than that of QDSSCs made with Au CE (η = 2.94%).
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Affiliation(s)
- Xin Qi Chen
- Institute for Superconducting and Electronic Materials, Squires Way, Innovation Campus of University of Wollongong, Wollongong, 2500, New South Wales (Australia), Fax: (+61) 2-4221-5731; Institute of Nanoscience and Nanotechnology, Department of Physics, Central China Normal University, Wuhan, 430079 (China)
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15
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Singh VV, Singh AK. Tetragonal Cu2Se nanoflakes: synthesis using selenated propylamine as Se source and activation of Suzuki and Sonogashira cross coupling reactions. Dalton Trans 2014; 44:725-32. [PMID: 25408175 DOI: 10.1039/c4dt03320e] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The metastable tetragonal Cu2Se phase as nanoflakes has been synthesized for the first time by treating CuCl2 taken in a mixture (1:1) of 1-octadecene and oleylamine with H2N-(CH2)3-SePh dissolved in 1-octadecene. Powder X-ray diffraction (PXRD), HRTEM, SEM-EDX and XPS have been used to authenticate the nanoflakes. The XPS of Cu2Se nanoflakes indicates oxidation states of Cu and Se as +1 and -2 respectively. The size of the majority of Cu2Se nanoflakes was found to be between 12 and 14 nm. The nanoflakes have been explored for Suzuki and Sonogashira cross coupling reactions in the presence of TBAB in DMF and DMSO respectively. For Suzuki coupling conversion was found upto ∼86% in 15 h at 110 °C when loading of Cu was 1 mol%. In case of Sonogashira coupling conversion was found upto 82% in 15 h at 160 °C (Cu loading: 1 mol%). The catalytic efficiency of Cu2Se nanoflakes for Suzuki coupling reaction is greater than that for Sonogashira coupling. These nanoflakes have been found reusable for a second time. Most probably TBAB facilitates the release of CuBr from the nanoflakes which catalyze both reactions, as catalytic efficiency is very low in the absence of TBAB and CuBr has been found to activate readily both the coupling reactions. In comparison to many other copper based nano-crystals, the present nanoflakes are a better activator.
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Affiliation(s)
- Ved Vati Singh
- Department of Chemistry, Indian Institute of Technology Delhi, New Delhi 110016, India.
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16
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Wang Y, Zhukovskyi M, Tongying P, Tian Y, Kuno M. Synthesis of Ultrathin and Thickness-Controlled Cu2-xSe Nanosheets via Cation Exchange. J Phys Chem Lett 2014; 5:3608-3613. [PMID: 26278726 DOI: 10.1021/jz5019288] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We demonstrate the use of cation exchange to synthesize ultrathin and thickness-controlled Cu2-xSe nanosheets (NSs) beginning with CdSe NSs. In this manner, extremely thin (i.e., 1.6 nm thickness) Cu2-xSe NSs, beyond which can be made directly, have been obtained. Furthermore, they represent the thinnest NSs produced via cation exchange. Notably, the exchange reaction preserves the starting morphology of the CdSe sheets and also retains their cubic crystal structure. The resulting nonstoichiometric and cubic Cu2-xSe NSs are stable and do not exhibit any signs of Cu or Se oxidation after exposure to air for 2 weeks. Resulting NSs also show the existence of a localized surface plasmon resonance in the infrared due to the presence of copper vacancies. Efforts to isolate intermediates during the cation exchange reaction show that it occurs via a mechanism where entire sheets are rapidly converted into the final product once the exchange reaction commences, precluding the isolation of alloyed species.
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Affiliation(s)
- Yuanxing Wang
- †Department of Chemistry and Biochemistry, University of Notre Dame, 251 Nieuwland Science Hall, Notre Dame, Indiana 46556, United States
| | - Maksym Zhukovskyi
- †Department of Chemistry and Biochemistry, University of Notre Dame, 251 Nieuwland Science Hall, Notre Dame, Indiana 46556, United States
| | - Pornthip Tongying
- †Department of Chemistry and Biochemistry, University of Notre Dame, 251 Nieuwland Science Hall, Notre Dame, Indiana 46556, United States
| | - Yang Tian
- ‡Department of Chemistry, Capital Normal University, Beijing 100048, People's Republic of China
| | - Masaru Kuno
- †Department of Chemistry and Biochemistry, University of Notre Dame, 251 Nieuwland Science Hall, Notre Dame, Indiana 46556, United States
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17
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Jia F, Zhang S, Zhang X, Peng X, Zhang H, Xiang Y. Sb-Triggered β-to-α Transition: Solvothermal Synthesis of Metastable α-Cu2Se. Chemistry 2014; 20:15941-6. [DOI: 10.1002/chem.201403797] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2014] [Indexed: 11/09/2022]
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18
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Lie SQ, Wang DM, Gao MX, Huang CZ. Controllable copper deficiency in Cu2-xSe nanocrystals with tunable localized surface plasmon resonance and enhanced chemiluminescence. NANOSCALE 2014; 6:10289-96. [PMID: 25065365 DOI: 10.1039/c4nr02294g] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Copper chalcogenide nanocrystals (CuCNCs) as a type of semiconductor that can also act as efficient catalysts are rarely reported. Herein, we study water-soluble size-controlled Cu(2-x)Se nanocrystals (NCs), which are copper deficient and could be prepared by a redox reaction with the assistance of surfactants. We found them to have strong near-infrared localized surface plasmon resonance (LSPR) properties originating from the holes in the valence band, and also catalytic activity of more than a 500-fold enhancement of chemiluminescence (CL) in a luminol-H2O2 system. Investigations into the mechanisms behind these results showed that the high concentration of free carriers in Cu(2-x)Se NCs, which are derived from their high copper deficiencies that make Cu(2-x)Se NCs both good electron donors and acceptors with high ionic mobility, could greatly enhance the catalytic ability of Cu(2-x)Se NCs to facilitate electron-transfer processes and the decomposition of H2O2 into OH˙ and O2(˙-), which are the commonly accepted key intermediates in luminol CL enhancement. Thus, it can be concluded that controllable copper deficiencies that are correlated with their near-infrared LSPR are critically responsible for the effective catalysis of Cu(2-x)Se NCs in the enhanced CL.
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Affiliation(s)
- Shao Qing Lie
- Key Laboratory of Luminescence and Real-Time Analytical Chemistry (Southwest University), Ministry of Education, College of Chemistry and Chemical Engineering, Southwest University, Chongqing, 400715, P. R. China.
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Liu YQ, Wang FX, Xiao Y, Peng HD, Zhong HJ, Liu ZH, Pan GB. Facile microwave-assisted synthesis of Klockmannite CuSe nanosheets and their exceptional electrical properties. Sci Rep 2014; 4:5998. [PMID: 25104467 PMCID: PMC4126004 DOI: 10.1038/srep05998] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Accepted: 07/18/2014] [Indexed: 12/31/2022] Open
Abstract
Klockmannite copper selenide nanosheets (CuSe NSs) are synthesized by a facile microwave-assisted method and fully characterized. The nanosheets have smooth surface and hexagonal shape. The lateral size is 200–500 nm × 400–800 nm and the thickness is 55 ± 20 nm. The current-voltage characteristics of CuSe NS films show unique Ohmic and high-conducting behaviors, comparable to the thermally-deposited gold electrode. The high electrical conductivity of CuSe NSs implies their promising applications in printed electronics and nanodevices. Moreover, the local electrical variation is observed, for the first time, within an individual CuSe NS at low bias voltages (0.1 ~ 3 V) by conductive atomic force microscopy (C-AFM). This is ascribed to the quantum size effect of NS and the presence of Schottky barrier. In addition, the influence of the molar ratio of Cu2+/SeO2, reaction temperature, and reaction time on the growth of CuSe NSs is explored. The template effect of oleylamine and the intrinsic crystal nature of CuSe NS are proposed to account for the growth of hexagonal CuSe NSs.
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Affiliation(s)
- Yong-Qiang Liu
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 215123 Suzhou, P. R. China
| | - Feng-Xia Wang
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 215123 Suzhou, P. R. China
| | - Yan Xiao
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 215123 Suzhou, P. R. China
| | - Hong-Dan Peng
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 215123 Suzhou, P. R. China
| | - Hai-Jian Zhong
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 215123 Suzhou, P. R. China
| | - Zheng-Hui Liu
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 215123 Suzhou, P. R. China
| | - Ge-Bo Pan
- Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, 215123 Suzhou, P. R. China
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Li WL, Lie SQ, Du YQ, Wan XY, Wang TT, Wang J, Huang CZ. Hydrophilic Cu2−xSe/reduced graphene oxide nanocomposites with tunable plasmonic properties and their applications in cellular dark-field microscopic imaging. J Mater Chem B 2014; 2:7027-7033. [DOI: 10.1039/c4tb01099j] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a facile and green approach to fabricate Cu2−xSe/rGO nanocomposites at room temperature, with tunable plasmonic properties as well as favorable biocompatibility, and exploit them for cell imaging in vitro.
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Affiliation(s)
- Wen Long Li
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715, China
| | - Shao Qing Lie
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715, China
| | - Yu Qing Du
- College of Pharmaceutical Science
- Southwest University
- Chongqing 400715, China
| | - Xiao Yan Wan
- College of Pharmaceutical Science
- Southwest University
- Chongqing 400715, China
| | - Ting Ting Wang
- College of Pharmaceutical Science
- Southwest University
- Chongqing 400715, China
| | - Jian Wang
- College of Pharmaceutical Science
- Southwest University
- Chongqing 400715, China
| | - Cheng Zhi Huang
- Key Laboratory of Luminescent and Real-Time Analytical Chemistry (Southwest University)
- Ministry of Education
- College of Chemistry and Chemical Engineering
- Southwest University
- Chongqing 400715, China
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