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Rachel Chau YT, Thanh Nguyen M, Tokunaga T, Yonezawa T. Mechanistic consideration of ZnTe microspheres formation in a PVP-contained polyol system via hot injection method. ADV POWDER TECHNOL 2023. [DOI: 10.1016/j.apt.2023.103970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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Feng J, Zu L, Yang H, Zheng Y, Chen Z, Song W, Zhao R, Wang L, Ran X, Xiao B. Induced abundant oxygen vacancies in Sc 2VO 5-δ /g-C 3N 4 heterojunctions for enhanced photocatalytic degradation of levofloxacin. RSC Adv 2022; 13:688-700. [PMID: 36605657 PMCID: PMC9782857 DOI: 10.1039/d2ra07484b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Sc2VO5-δ /g-C3N4 heterojunctions (SVCs) with abundant oxygen vacancies (OVs) were synthesized by ultrasonic exfoliation combined with the thermal etching method. The structures, OVs and spatial separation of the photogenerated carriers were systematically characterized. The results manifested that the SVCs were successfully constructed via the strong interaction between g-C3N4 (CN) and Sc2VO5-δ (SV). The SVCs possessed a higher concentration of OVs than that of pristine CN and SV. The formation of the SVC heterostructures and the optimization of the OVs were the two major factors to accelerate the separation of the charge carriers and finally to improve the photocatalysis performance. The as-prepared 10%SVC (containing 10 wt% of SV) catalyst exhibited the highest OV concentration and the best photocatalytic performance. The levofloxacin (LVX) photodegradation activity showed a positive correlation with the OV concentration. The photocatalytic degradation efficiencies were 89.1, 98.8 and 99.0% on 10%SVC for LVX, methylene blue (MB) and rhodamine B (RhB), respectively. These photodegradation processes followed the pseudo first order kinetic equation. The apparent rate constant (k app) of LVX degradation on 10%SVC was 11.0 and 7.5 times that of CN and SV. The h+, ˙OH and ˙O2 - were the major reactive species in the photodegradation process.
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Affiliation(s)
- Jian Feng
- Engineering Research Center for Molecular Medicine, School of Basic Medical Science, Guizhou Medical University Guiyang 550025 China +86 851 88174017
| | - Liyao Zu
- Engineering Research Center for Molecular Medicine, School of Basic Medical Science, Guizhou Medical University Guiyang 550025 China +86 851 88174017
| | - Hongrong Yang
- Engineering Research Center for Molecular Medicine, School of Basic Medical Science, Guizhou Medical University Guiyang 550025 China +86 851 88174017
| | - Yuanyuan Zheng
- Engineering Research Center for Molecular Medicine, School of Basic Medical Science, Guizhou Medical University Guiyang 550025 China +86 851 88174017
| | - Ziying Chen
- Engineering Research Center for Molecular Medicine, School of Basic Medical Science, Guizhou Medical University Guiyang 550025 China +86 851 88174017
| | - Wei Song
- Engineering Research Center for Molecular Medicine, School of Basic Medical Science, Guizhou Medical University Guiyang 550025 China +86 851 88174017
| | - Ran Zhao
- Engineering Research Center for Molecular Medicine, School of Basic Medical Science, Guizhou Medical University Guiyang 550025 China +86 851 88174017
| | - Li Wang
- Engineering Research Center for Molecular Medicine, School of Basic Medical Science, Guizhou Medical University Guiyang 550025 China +86 851 88174017
| | - Xia Ran
- Engineering Research Center for Molecular Medicine, School of Basic Medical Science, Guizhou Medical University Guiyang 550025 China +86 851 88174017
| | - Bo Xiao
- Engineering Research Center for Molecular Medicine, School of Basic Medical Science, Guizhou Medical University Guiyang 550025 China +86 851 88174017
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Shi Y, Cui R, Gong X, Deng C. A novel red phosphor Ca 2 YNbO 6 :Eu 3+ for WLEDs. LUMINESCENCE 2022; 37:1343-1351. [PMID: 35689345 DOI: 10.1002/bio.4304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 06/02/2022] [Accepted: 06/07/2022] [Indexed: 11/10/2022]
Abstract
Due to the advantages of good physicochemical properties, thermal stability, and optical properties, double perovskite compounds have received extensive attention. On this basis, a new type of red phosphor, Ca2 YNbO6 :xEu3+ , was synthesized using a high-temperature solid-phase method. Its phase purity, morphology, elemental composition, absorption spectrum, photoluminescence, thermal stability, and Commission Internationale de l'éclairage (CIE) chromaticity coordinates were thoroughly investigated. The results display that there is no impurity phase in the samples and the convergence factor Rwp = 14.2%; the microscopic particles are uniform and full, and the distribution of each element is uniform. The energy band gap ΔE is between 3.71 eV and 3.65 eV. The luminescence intensity is the best when the doped Eu3+ concentration x reaches 0.4, and emits 612 nm red light (5 D0 →7 F2 ) under 465 nm excitation, and the concentration quenching is attributed to a d-d interaction. The luminescence intensity at 425 K was still 75% of the room temperature luminescence intensity, which indicates that the thermal stability is extremely superior. The CIE chromaticity coordinates (0.6534, 0.3455) of the Ca2YNbO6:0.4Eu3+ phosphors are very close to National Television Standards Committee (0.670, 0.330), and the samples have low correlated colour temperature (2656 K) and high colour purity (99.90%). All findings suggest that Ca2 YNbO6 :Eu3+ can serve as a substitute for red phosphor in WLEDs.
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Affiliation(s)
- Youzhen Shi
- Key Laboratory of Functional Composite Materials of Guizhou Province, College of Big Data and Information Engineering, Guizhou University, Guiyang, China
| | - Ruirui Cui
- Key Laboratory of Functional Composite Materials of Guizhou Province, College of Big Data and Information Engineering, Guizhou University, Guiyang, China
| | - Xinyong Gong
- Key Laboratory of Functional Composite Materials of Guizhou Province, College of Big Data and Information Engineering, Guizhou University, Guiyang, China
| | - Chaoyong Deng
- Key Laboratory of Functional Composite Materials of Guizhou Province, College of Big Data and Information Engineering, Guizhou University, Guiyang, China.,School of Electronics and Information Engineering, Guiyang University, Guiyang, China
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Ghotekar S, Pansambal S, Lin KYA, Pore D, Oza R. Recent Advances in Synthesis of CeVO4 Nanoparticles and Their Potential Scaffold for Photocatalytic Applications. Top Catal 2022. [DOI: 10.1007/s11244-022-01630-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Liu S, Deng B, Yang J, Liu J, Chen J, Zeng F, Wang H, Yu R, Zhang G. Multi-site occupancies and luminescence properties of cyan-emitting Ca9–NaGd2/3(PO4)7:Eu2+ phosphors for white light-emitting diodes. J RARE EARTH 2022. [DOI: 10.1016/j.jre.2021.01.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Zhang M, Cui H, Zhang L, Qin G, Zhang P, Wang S, Jiang G, Wang J, Wang M, Wang M, Sun T, Tang Y. A Triazole Functionalized txt-Type Metal-Organic Framework with High Performance for CH 4 Uptake and Selective CO 2 Adsorption. Inorg Chem 2021; 60:15646-15652. [PMID: 34606254 DOI: 10.1021/acs.inorgchem.1c02249] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The metal-organic framework (MOF) NTUniv-54 (NTUniv = Nantong University) was assembled via utilizing click chemistry with densely decorated trizole units and exposed metal sites, which exhibited the best methane working ability (197 cm3·cm-3 from 100 to 5 bar and 177 cm3·cm-3 from 65 to 5 bar at 298 K), and the lowest CO2 Qst of 22.8 kJ·mol-1 in all triazole-MOFs at room temperature.
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Affiliation(s)
- Mingxing Zhang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China
| | - Huihui Cui
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China
| | - Lifang Zhang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China
| | - Guoping Qin
- Chongqing Key Laboratory of Photo-Electric Functional Materials, College of Physics and Electronic Engineering, Chongqing Normal University, Chongqing 401331, China
| | - Peipei Zhang
- School of Sciences, Nantong University, Nantong, Jiangsu 226019, China
| | - Su Wang
- School of Sciences, Nantong University, Nantong, Jiangsu 226019, China
| | - Guomin Jiang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China
| | - Jin Wang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China
| | - Minmin Wang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China
| | - Miao Wang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China
| | - Tongming Sun
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China
| | - Yanfeng Tang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China
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Wang Z, Ji H, Zhou L, Shen X, Gao L, Liu J, Yang T, Qian T, Yan C. All-Liquid-Phase Reaction Mechanism Enabling Cryogenic Li-S Batteries. ACS NANO 2021; 15:13847-13856. [PMID: 34382785 DOI: 10.1021/acsnano.1c05875] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The sluggish solid-solid conversion kinetics from Li2S4 to Li2S during discharge is considered the main problem for cryogenic Li-S batteries. Herein, an all-liquid-phase reaction mechanism, where all the discharging intermediates are dissolved in the functional thioether-based electrolyte, is proposed to significantly enhance the kinetics of Li-S battery chemistry at low temperatures. A fast liquid-phase reaction pathway thus replaces the conventional slow solid-solid conversion route. Spectral investigations and molecular dynamics simulations jointly elucidate the greatly enhanced kinetics due to the highly decentralized state of solvated intermediates in the electrolyte. Overall, the battery brings an ultrahigh specific capacity of 1563 mAh g-1sulfur in the cathode at -60 °C. This work provides a strategy for developing cryogenic Li-S batteries.
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Affiliation(s)
- Zhenkang Wang
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou 215006, China
| | - Haoqing Ji
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou 215006, China
| | - Luozeng Zhou
- State Key Laboratory of Space Power-Sources Technology, Shanghai Institute of Space Power-Sources, 2965 Dongchuan Road, Shanghai 200245, China
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Xiaowei Shen
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou 215006, China
| | - Lihua Gao
- State Key Laboratory of Space Power-Sources Technology, Shanghai Institute of Space Power-Sources, 2965 Dongchuan Road, Shanghai 200245, China
| | - Jie Liu
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226000, China
| | - Tingzhou Yang
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou 215006, China
| | - Tao Qian
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou 215006, China
- College of Chemistry and Chemical Engineering, Nantong University, Nantong 226000, China
- Light Industry Institute of Electrochemical Power Sources, Suzhou 215600, China
| | - Chenglin Yan
- College of Energy, Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province, Soochow University, Suzhou 215006, China
- Light Industry Institute of Electrochemical Power Sources, Suzhou 215600, China
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Photoluminescence properties and thermal stability of Eu3+-activated La7Ta3W4O30 red-emitting phosphors for near-UV-excited w-LEDs. J RARE EARTH 2021. [DOI: 10.1016/j.jre.2020.07.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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A potential red-emitting phosphor Ca2YTaO6:Eu3+: Luminescence properties, thermal stability and applications for white LEDs. J RARE EARTH 2021. [DOI: 10.1016/j.jre.2020.07.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Che J, Deng B, Song Q, Wang J, Wang T, Zhao S, Yu R. Synthesis and optical properties of novel double perovskite Ca2MgTeO6:Dy3+,Na+ phosphors for white LEDs. J RARE EARTH 2021. [DOI: 10.1016/j.jre.2020.07.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Ou C, Li S, Wang Z, Qin J, Wang Q, Liao Z, Li J. Organic Nanobowls Modified Thin Film Composite Membrane for Enhanced Purification Performance toward Different Water Resources. MEMBRANES 2021; 11:membranes11050350. [PMID: 34068612 PMCID: PMC8151631 DOI: 10.3390/membranes11050350] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 05/04/2021] [Accepted: 05/05/2021] [Indexed: 12/12/2022]
Abstract
The structure and composition of nanofillers have a significant influence on polyamide nanofiltration (NF) membranes. In this work, an asymmetric organic nanobowl containing a concave cavity was synthesized and incorporated into a polyamide layer to prepare thin film nanocomposite (TFN) membranes via an interfacial polymerization process. Benefiting from the hydrophilicity, hollow cavity and charge property of the compatible organic nanobowls, the separation performance of the developed TFN membrane was significantly improved. The corresponding water fluxes increased to 119.44 ± 5.56, 141.82 ± 3.24 and 130.27 ± 2.05 L/(m2·h) toward Na2SO4, MgCl2 and NaCl solutions, respectively, with higher rejections, compared with the control thin film composite (TFC) and commercial (CM) membranes. Besides this, the modified TFN membrane presented a satisfying purification performance toward tap water, municipal effluent and heavy metal wastewater. More importantly, a better antifouling property of the TFN membrane than TFC and CM membranes was achieved with the assistance of organic nanobowls. These results indicate that the separation performance of the TFN membrane can be elevated by the incorporation of organic nanobowls.
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Affiliation(s)
- Changjin Ou
- Nantong Key Laboratory of Intelligent and New Energy Materials, School of Chemistry and Chemical Engineering, Nantong University, Nantong 222100, China; (C.O.); (S.L.); (Z.W.); (J.Q.)
| | - Sisi Li
- Nantong Key Laboratory of Intelligent and New Energy Materials, School of Chemistry and Chemical Engineering, Nantong University, Nantong 222100, China; (C.O.); (S.L.); (Z.W.); (J.Q.)
| | - Zhongyi Wang
- Nantong Key Laboratory of Intelligent and New Energy Materials, School of Chemistry and Chemical Engineering, Nantong University, Nantong 222100, China; (C.O.); (S.L.); (Z.W.); (J.Q.)
| | - Juan Qin
- Nantong Key Laboratory of Intelligent and New Energy Materials, School of Chemistry and Chemical Engineering, Nantong University, Nantong 222100, China; (C.O.); (S.L.); (Z.W.); (J.Q.)
| | - Qian Wang
- School of Materials Science and Chemical Engineering, Xi’an Technological University, Xi’an 710021, China;
| | - Zhipeng Liao
- Nantong Key Laboratory of Intelligent and New Energy Materials, School of Chemistry and Chemical Engineering, Nantong University, Nantong 222100, China; (C.O.); (S.L.); (Z.W.); (J.Q.)
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
- Correspondence: (Z.L.); (J.L.)
| | - Jiansheng Li
- Key Laboratory of New Membrane Materials, Ministry of Industry and Information Technology, School of Environment and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
- Correspondence: (Z.L.); (J.L.)
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Cruz L, Teixeira MM, Teodoro V, Jacomaci N, Laier LO, Assis M, Macedo NG, Tello ACM, da Silva LF, Marques GE, Zaghete MA, Teodoro MD, Longo E. Multi-dimensional architecture of Ag/α-Ag2WO4 crystals: insights into microstructural, morphological, and photoluminescence properties. CrystEngComm 2020. [DOI: 10.1039/d0ce00876a] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Varying the concentration of ethylenediamine resulted in hollow or solid Ag/α-Ag2WO4 microflowers that emit light in the red region or in the blue region, respectively.
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Zhang J, Liu M, Wang Y, Shi F. Au/MoS 2/Ti 3C 2 composite catalyst for efficient photocatalytic hydrogen evolution. CrystEngComm 2020. [DOI: 10.1039/d0ce00345j] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The Au/MoS2/Ti3C2 composite catalyst has efficient photocatalytic hydrogen evolution performance.
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Affiliation(s)
- Juhui Zhang
- School of Material Science & Engineering
- Shandong University of Science and Technology
- Qingdao
- P.R. China
| | - Mengting Liu
- School of Material Science & Engineering
- Shandong University of Science and Technology
- Qingdao
- P.R. China
| | - Yuying Wang
- School of Material Science & Engineering
- Shandong University of Science and Technology
- Qingdao
- P.R. China
| | - Feng Shi
- School of Material Science & Engineering
- Shandong University of Science and Technology
- Qingdao
- P.R. China
- Key Laboratory of Processing and Testing Technology of Glass & Functional Ceramics of Shandong Province
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