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Zhu Y, Zhao S, Wang J, Zhang N. Al3+ ions co-doped Ba2YSbO6: Mn4+ phosphors with high thermal stability and strong far-red emission for plant growth LEDs. J SOLID STATE CHEM 2023. [DOI: 10.1016/j.jssc.2023.123854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Zhong X, Deng D, Wang T, Li Y, Yu Y, Qiang J, Liao S, Huang Y, Long J. High Water Resistance and Luminescent Thermal Stability of Li yNa (2–y)SiF 6: Mn 4+ Red-Emitting Phosphor Induced by Codoping of Li +. Inorg Chem 2022; 61:5484-5494. [DOI: 10.1021/acs.inorgchem.1c03488] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Xue Zhong
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Daishu Deng
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Tianman Wang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Yuelan Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Yan Yu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Jiawei Qiang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
| | - Sen Liao
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
- School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, China
| | - Yingheng Huang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, Guangxi 530004, China
- School of Resources, Environment and Materials, Guangxi University, Nanning, Guangxi 530004, China
| | - Jinqiao Long
- Guangxi colleges and Universities Key Subject of Material Physics and Chemistry, College of Chemistry & Environment Engineering, Baise University, Baise, Guangxi 533000, China
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Cho DW, Han YS, Lee J, Jang JY, Yim GJ, Cho S, Lee JS, Cheong YW. Water defluorination using granular composite synthesized via hydrothermal treatment of polyaluminum chloride (PAC) sludge. CHEMOSPHERE 2020; 247:125899. [PMID: 31945718 DOI: 10.1016/j.chemosphere.2020.125899] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 01/07/2020] [Accepted: 01/10/2020] [Indexed: 06/10/2023]
Abstract
In this work, we newly synthesized granular composite (GASA) via hydrothermal treatment of polyaluminum chloride (PAC) and subsequently granulation pelleting with starch gel as an organic binder. The resulting composite was characterized with analytic instruments, and the feasibility of utilizing GASA as adsorbent for the removal of fluoride (F-) was tested in the batch and column experiments. The characterization results revealed that GASA possessed a spherical/porous framework consisting of aluminosilicate (i.e., ordered albite, NaAlSiO3O8). The results of final pH effect experiments and XRD/XPS analyses showed the dominant adsorption mechanisms of F- on GASA were electrostatic attraction by protonated surface Al-OH, ligand exchange between surface hydroxyl groups and F ions, and surface precipitation (i.e., cryolite formation). Based on the results of adsorption kinetics and adsorption isotherm, granulation resulted in the relatively slow kinetics of F adsorption compared to the powder type, but was preferred to retain good adsorption capacity. The regeneration possibility of GASA was also proven with the adsorption/desorption cyclic test. In the column study, 15-cm length of the GASA layer and the flow rate less than 0.85 mL min-1 were proposed to keep the satisfactory level of F in water. The experimental results offer a potential of PAC sludge-derived composite as adsorbent for the removal of F from water.
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Affiliation(s)
- Dong-Wan Cho
- Geological Environment Division, Korea Institute of Geoscience and Mineral Resources, Gwahak-ro 124, Yuseong-gu, Daejeon, 34132, Republic of Korea
| | - Young-Soo Han
- Geological Environment Division, Korea Institute of Geoscience and Mineral Resources, Gwahak-ro 124, Yuseong-gu, Daejeon, 34132, Republic of Korea
| | - Joonhak Lee
- Geological Environment Division, Korea Institute of Geoscience and Mineral Resources, Gwahak-ro 124, Yuseong-gu, Daejeon, 34132, Republic of Korea; Institute of Mine Reclamation Technology, Mine Reclamation Corporation (MIRECO), Wonju, 26464, Republic of Korea
| | - Jeong-Yun Jang
- Geological Environment Division, Korea Institute of Geoscience and Mineral Resources, Gwahak-ro 124, Yuseong-gu, Daejeon, 34132, Republic of Korea
| | - Gil-Jae Yim
- Geological Environment Division, Korea Institute of Geoscience and Mineral Resources, Gwahak-ro 124, Yuseong-gu, Daejeon, 34132, Republic of Korea
| | - Sanghyun Cho
- Institute of Mine Reclamation Technology, Mine Reclamation Corporation (MIRECO), Wonju, 26464, Republic of Korea
| | - Jin-Soo Lee
- Institute of Mine Reclamation Technology, Mine Reclamation Corporation (MIRECO), Wonju, 26464, Republic of Korea
| | - Young-Wook Cheong
- Geological Environment Division, Korea Institute of Geoscience and Mineral Resources, Gwahak-ro 124, Yuseong-gu, Daejeon, 34132, Republic of Korea.
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Shuai P, Yang D, Liao L, Guo Q, Mei L, Zhang Y, Liu H. Preparation, structure and up-conversion luminescence properties of novel cryolite K 3YF 6:Er 3+, Yb 3. RSC Adv 2020; 10:1658-1665. [PMID: 35494668 PMCID: PMC9047056 DOI: 10.1039/c9ra10257d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Accepted: 12/31/2019] [Indexed: 11/22/2022] Open
Abstract
Cryolite is a suitable host for up-conversion luminescent materials due to its low phonon energy and good optical transparency. In this work, a novel up-conversion material K3YF6:Yb3+, Er3+ with a cryolite structure was prepared successfully by a solid state method. The crystal structure, morphology, composition and up-conversion luminescence properties of the as-prepared sample were characterized by X-ray diffractometry (XRD), field emission scanning electron microscopy (SEM) and fluorescence spectrometer in detail. K3YF6:Er3+, Yb3+ has a cryolite structure. Under 980 nm excitation, the as-prepared sample can generate slight green emission at 524 and 546 nm (attributed to 2H11/2 → 4I15/2 transition, 4S3/2→4I15/2 transition of Er3+) and strong red emission at 661 and 672 nm (corresponding to 4F9/2 → 4I15/2 transition, 4I9/2 → 4I15/2 transition of Er3+). All the green and red up-conversion emission of K3YF6:Er3+, Yb3+ transfer and electronic transition process of the red and green light the sample emitted, the possible luminescence mechanism is discussed in this paper.
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Affiliation(s)
- Pengfei Shuai
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences Beijing 100083 China
| | - Dan Yang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences Beijing 100083 China
| | - Libing Liao
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences Beijing 100083 China
| | - Qingfeng Guo
- School of Gemology, China University of Geosciences Beijing 100083 China
- Jewelry and Mineral Materials Laboratory of Experimental Teaching Demonstration Center Beijing China
| | - Lefu Mei
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences Beijing 100083 China
| | - Yidi Zhang
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences Beijing 100083 China
| | - Haikun Liu
- Beijing Key Laboratory of Materials Utilization of Nonmetallic Minerals and Solid Wastes, National Laboratory of Mineral Materials, School of Materials Sciences and Technology, China University of Geosciences Beijing 100083 China
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Hong F, Pang G, Diao L, Fu Z, Liu G, Dong X, Yu W, Wang J. Local structure modulation of Mn4+-doped Na2Si1−yGeyF6 red phosphors for enhancement of emission intensity, moisture resistance, thermal stability and application in warm pc-WLEDs. Dalton Trans 2020; 49:13805-13817. [DOI: 10.1039/d0dt02935a] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Mn4+-doped Na2Si1−yGeyF6 red phosphors with efficient water and thermal stabilities were synthesized for high-performance warm pc-WLEDs.
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Affiliation(s)
- Feng Hong
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
- College of Materials Science and Engineering
| | - Ge Pang
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
| | - Lijuan Diao
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
| | - Zhendong Fu
- Tianjin Jinhang Technical Physics Institute
- Tianjin
- P. R. China
| | - Guixia Liu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
| | - Xiangting Dong
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
| | - Wensheng Yu
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
| | - Jinxian Wang
- Key Laboratory of Applied Chemistry and Nanotechnology at Universities of Jilin Province
- Changchun University of Science and Technology
- Changchun 130022
- P. R. China
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