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Wen B, Xiao J, Miao Y, Li N, Liu M, Li L, Ding S, Yang G. Advantageous Effects of Phase Transition-Modulated Electric Polarization of Hollow CuS x for Enhanced Electromagnetic Wave Absorption. Inorg Chem 2024; 63:16573-16583. [PMID: 39167731 DOI: 10.1021/acs.inorgchem.4c03019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
Scrutinizing the electromagnetic wave absorption mechanism of sulfides remains a challenge due to the variability of the modulation of the crystal structure of the sulfides. To take advantage of this variability, nanosheet-assembled Cu9S5/CN composites with sulfur vacancies were prepared in this study by self-assembly synthesis and subsequent high-temperature heat treatment. Systematic studies show the phase transition-dependent induced decrease in the conductivity, the defect site-induced difference in the charge density, the weakened vacancy formation of defect polarization loss, and the influence of valence state on electric dipole polarization loss and interfacial polarization loss, making the optimization of the dielectric constant a significant positive effect on the improvement of impedance matching. This work provides a reliable example and theoretical guidance for the crystal structure design for the preparation of a new generation of efficient sulfide-based wave-absorbing materials.
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Affiliation(s)
- Bo Wen
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, "Four Joint Subjects One Union" School-Enterprise Joint Research Center for Power Battery Recycling & Circulation Utilization Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Jiyuan Xiao
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, "Four Joint Subjects One Union" School-Enterprise Joint Research Center for Power Battery Recycling & Circulation Utilization Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Yunzi Miao
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, "Four Joint Subjects One Union" School-Enterprise Joint Research Center for Power Battery Recycling & Circulation Utilization Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Na Li
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, "Four Joint Subjects One Union" School-Enterprise Joint Research Center for Power Battery Recycling & Circulation Utilization Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Mengjie Liu
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, "Four Joint Subjects One Union" School-Enterprise Joint Research Center for Power Battery Recycling & Circulation Utilization Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Lili Li
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, "Four Joint Subjects One Union" School-Enterprise Joint Research Center for Power Battery Recycling & Circulation Utilization Technology, Xi'an Jiaotong University, Xi'an 710049, China
- Alpha ESS Co., Ltd., Nantong 226300, People's Republic of China
| | - Shujiang Ding
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, "Four Joint Subjects One Union" School-Enterprise Joint Research Center for Power Battery Recycling & Circulation Utilization Technology, Xi'an Jiaotong University, Xi'an 710049, China
| | - Guorui Yang
- School of Chemistry, Engineering Research Center of Energy Storage Materials and Devices, Ministry of Education, "Four Joint Subjects One Union" School-Enterprise Joint Research Center for Power Battery Recycling & Circulation Utilization Technology, Xi'an Jiaotong University, Xi'an 710049, China
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Nguyen DT, Nguyen KMV, Duong HK, Nguyen BT, Nguyen MDK, Tran DB, Tran QH, Doan TLH, Nguyen MV. Enhanced photoreduction efficiency of Cr(VI) driven by visible light in a new Zr-based metal-organic framework modified by hydroxyl groups. Dalton Trans 2024; 53:7213-7228. [PMID: 38584502 DOI: 10.1039/d4dt00505h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
While metal-organic framework (MOF) photocatalysts have demonstrated a unique Cr(VI) photoreduction capability in recent decades, their performance is still insufficient for practical applications because of their low Cr(VI) uptake and poor visible light response. To cope with these drawbacks, a new OH-modified Zr-based MOF, termed HCMUE-1, was successfully prepared via a solvothermal method in this work. The complete characterization of HCMUE-1 was performed through various techniques, including powder X-ray diffraction (PXRD), Raman spectroscopy, Fourier transform infrared (FT-IR), thermogravimetric analysis and differential scanning calorimetry (TGA-DSC), scanning electron microscopy combined with energy-dispersive X-ray (SEM-EDX), and X-ray photoelectron spectroscopy (XPS). The obtained data exhibited the excellent Cr(VI) photoreduction efficiency of HCMUE-1, reaching up to 98% after 90 min and almost 100% after 120 min under visible light illumination in a low acidic medium. Noteworthily, HCMUE-1 retained the same Cr(VI) removal rate for at least seven cycles without considerable loss. Further experimental investigations demonstrated that the structural stability and surface morphology of HCMUE-1 were retained after photoreduction. Moreover, the photocatalytic reduction mechanism of Cr(VI) to Cr(III) was interpreted through a series of systematic experimental measurements. These results indicate that HCMUE-1 possesses potential as an efficient photocatalyst for reducing toxic Cr(VI) species from wastewater in real-life conditions.
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Affiliation(s)
- Duc T Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City 700000, Vietnam.
| | - Khang M V Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City 700000, Vietnam.
| | - Huy K Duong
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City 700000, Vietnam.
| | - Binh T Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City 700000, Vietnam.
| | - Mai D K Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City 700000, Vietnam.
| | - Dang B Tran
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City 700000, Vietnam.
| | - Quang-Hieu Tran
- Basic Sciences Department-Saigon Technology, University, 180 Cao Lo, Ward 4, District 8, Ho Chi Minh City 700000, Vietnam
| | - Tan L H Doan
- Center for Innovative Materials and Architectures (INOMAR), Ho Chi Minh City, Vietnam
- Vietnam National University, Ho Chi Minh City, Vietnam
| | - My V Nguyen
- Faculty of Chemistry, Ho Chi Minh City University of Education, Ho Chi Minh City 700000, Vietnam.
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Mohan B, Oh KH, Park K, Yusuf M, Park JC, Park KH, Youn B. Controlled Synthesis and Uniform Anchoring of Hollow Cu xO Nanocubes on Carbon Nanofiber for Enhanced Se(S)-Se(S) Bond Activation. Inorg Chem 2023. [PMID: 37498117 DOI: 10.1021/acs.inorgchem.3c01860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
In the present study, we fabricated hollow cubic CuxO nanoparticles (∼23 nm) incorporated with CNF (HC-CuxO/CNF) through controlled thermal oxidation of solid cubic Cu2O nanoparticles (∼21 nm) supported on carbon nanofibers (SC-Cu2O/CNF) under airflow, exploiting the nanoscale Kirkendall effect. These hollow CuxO nanocubes with increased surface areas exhibited outstanding catalytic activity for unsymmetrical chalcogenide synthesis under ligand-free conditions.
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Affiliation(s)
- Balaji Mohan
- Department of Biological Sciences, Pusan National University, Busan 46241, Korea
- Department of Chemistry, Madanapalle Institute of Technology and Science, Madanapalle 517325, Chittoor, Andhra Pradesh, India
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Kyung Hee Oh
- Clean Fuel Research Laboratory, Korea Institute of Energy Research, Daejeon 34129, Korea
- Department of Chemistry, Korea University, Seoul 02841, Korea
| | - Kyeongmun Park
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Mohammad Yusuf
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Ji Chan Park
- Clean Fuel Research Laboratory, Korea Institute of Energy Research, Daejeon 34129, Korea
| | - Kang Hyun Park
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Korea
| | - Buhyun Youn
- Department of Biological Sciences, Pusan National University, Busan 46241, Korea
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Baláž M, Augustyniak A, Tatykayev B, Shalabayev Z, Burashev G, Dutková E, Daneu N, Briančin J, Balážová Ľ, Tkáčiková Ľ, Stahorský M, Achimovičová M, Baláž P. Mechanochemical synthesis of non-stoichiometric copper sulfide Cu 1.8S applicable as a photocatalyst and antibacterial agent and synthesis scalability verification. Faraday Discuss 2023; 241:367-386. [PMID: 36193820 DOI: 10.1039/d2fd00082b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
An effort to prepare different non-stoichiometric CuxSy compounds starting from elemental precursors using mechanochemistry was made in this study. However, out of the 7 stoichiometries tested, it was only possible to obtain three phases: covellite CuS, chalcocite Cu2S and digenite Cu1.8S and their mixtures. To obtain the digenite phase with the highest purity, the Cu : S stoichiometric ratio needed to be fixed at 1.6 : 1. The reaction between copper and sulfur was completed within a second range, however, milling was performed for up to 15 minutes until the equilibrium in phase composition between digenite and covellite was reached. The possibility of preparing the product in a 300 g batch by eccentric vibratory milling in 30 minutes was successfully verified at the end. The estimated crystallite sizes for the digenite Cu1.8S obtained via lab-scale and scalable experiments were around 12 and 17 nm, respectively. The obtained products were found to be efficient photocatalysts under visible light irradiation in the presence of hydrogen peroxide, being capable of the complete degradation of the Methyl Orange dye in a concentration of 10 mg L-1 in 2 hours. Finally, the antibacterial potential of both lab-scale and large-scale industrial products was proven and, regardless of the manufacturing scale, the nanoparticles retained their properties against bacterial cells.
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Affiliation(s)
- Matej Baláž
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 04001 Košice, Slovakia.
| | - Adrian Augustyniak
- Chair of Building Materials and Construction Chemistry, Technische Universität Berlin, Gustav-Meyer-Allee 25, 13355 Berlin, Germany.,Faculty of Chemical Technology and Engineering, The West Pomeranian University of Technology in Szczecin, Piastów Avenue 42, 71-065 Szczecin, Poland
| | - Batukhan Tatykayev
- Al-Farabi Kazakh National University, Al-Farabi ave., 71, 050040 Almaty, Kazakhstan
| | - Zhandos Shalabayev
- Al-Farabi Kazakh National University, Al-Farabi ave., 71, 050040 Almaty, Kazakhstan
| | - Gairat Burashev
- Al-Farabi Kazakh National University, Al-Farabi ave., 71, 050040 Almaty, Kazakhstan
| | - Erika Dutková
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 04001 Košice, Slovakia.
| | - Nina Daneu
- Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia
| | - Jaroslav Briančin
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 04001 Košice, Slovakia.
| | - Ľudmila Balážová
- University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81 Košice, Slovakia
| | - Ľudmila Tkáčiková
- University of Veterinary Medicine and Pharmacy, Komenského 73, 041 81 Košice, Slovakia
| | - Martin Stahorský
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 04001 Košice, Slovakia.
| | - Marcela Achimovičová
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 04001 Košice, Slovakia.
| | - Peter Baláž
- Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, 04001 Košice, Slovakia.
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