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Yamaguchi T, Kim HJ, Park HJ, Kim T, Khalid Z, Park JK, Oh JM. Controlling the Surface Morphology of Two-Dimensional Nano-Materials upon Molecule-Mediated Crystal Growth. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2363. [PMID: 37630948 PMCID: PMC10458610 DOI: 10.3390/nano13162363] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/03/2023] [Accepted: 08/15/2023] [Indexed: 08/27/2023]
Abstract
The surface morphology of Mg-Al-layered double hydroxide (LDH) was successfully controlled by reconstruction during systematic phase transformation from calcined LDH, which is referred to as layered double oxide (LDO). The LDH reconstructed its original phase by the hydration of LDO with expanded basal spacing when reacted with water, including carbonate or methyl orange molecules. During the reaction, the degree of crystal growth along the ab-plane and stacking along the c-axis was significantly influenced by the molecular size and the reaction conditions. The lower concentration of carbonate gave smaller particles on the surface of larger LDO (2000 nm), while the higher concentration induced a sand-rose structure. The reconstruction of smaller-sized LDH (350 nm) did not depend on the concentration of carbonate due to effective adsorption, and it gave a sand-rose structure and exfoliated the LDH layers. The higher the concentration of methyl orange and the longer the reaction time applied, the rougher the surface was obtained with a certain threshold point of the methyl orange concentration. The surface roughness generally increased with the loading mount of methyl orange. However, the degree of the surface roughness even increased after the methyl orange loading reached equilibrium. The result suggested that the surface roughening was mediated by not only the incorporation of guest molecules into the LDH but also a crystal arrangement after a sufficient amount of methyl orange was accommodated.
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Affiliation(s)
- Tetsuo Yamaguchi
- Department of Energy and Materials Engineering, Dongguk University, Seoul 04620, Republic of Korea (T.K.)
| | - Hyoung-Jun Kim
- Plasma Convergence R&BD Division, Cheorwon Plasma Research Institute, 1620, Hoguk-ro, Galmal-eup, Cherwon-gun 24047, Gangwon-do, Republic of Korea;
| | - Hee Jung Park
- KBSI Western Seoul Center, University-Industry Cooperation Building, 150 Bugahyeon-ro, Seodaemun-gu, Seoul 03759, Republic of Korea;
| | - Taeho Kim
- Department of Energy and Materials Engineering, Dongguk University, Seoul 04620, Republic of Korea (T.K.)
| | - Zubair Khalid
- Department of Energy and Materials Engineering, Dongguk University, Seoul 04620, Republic of Korea (T.K.)
| | - Jin Kuen Park
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin 17035, Gyeonggi-do, Republic of Korea
| | - Jae-Min Oh
- Department of Energy and Materials Engineering, Dongguk University, Seoul 04620, Republic of Korea (T.K.)
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2
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Chandrabose V, Kim T, Park JW, Jung SY, Oh JM. Effect of Tetrahedrally Coordinated Al on the Surface Acidity of Mg-Al Binary Mixed Oxides. Molecules 2023; 28:6072. [PMID: 37630324 PMCID: PMC10459910 DOI: 10.3390/molecules28166072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 08/08/2023] [Accepted: 08/11/2023] [Indexed: 08/27/2023] Open
Abstract
Metal oxides (MOs) having Mg and Al with Mg/Al ratios of 1, 2, 3, and 4 were synthesized via calcination of the layered double hydroxides (LDH). The X-ray diffraction analysis revealed that all the MO consisted of periclase (MgO) crystallite with comparable crystallinity regardless of the metal ratio. According to the 27Al magic-angle spinning nuclear magnetic resonance, the phase transformation from LDH to MO upon calcination facilitated the evolution of the Al3+ ions with unsaturated coordination at the surface of MO. The specific surface area values of MOs were not significantly different from each other, ranging between 100 and 200 m2/g, suggesting that the metal ratio did not strongly influence the porous structure of MO. The temperature-dependent desorption of ammonia demonstrated that the Lewis acidity of the Al-rich MOs was the largest with an Mg/Al ratio of 1, attributed to the efficient exposure of the surface-active site Al3+-O2- pairs. The acidity of heterogenous Al-rich MOs significantly increased with the exposed tetrahedral Al site on the surface and dramatically diminished when the molar ratio (Mg/Al) was over two.
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Affiliation(s)
- Vidya Chandrabose
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (V.C.); (T.K.); (J.w.P.); (S.-Y.J.)
| | - Taeho Kim
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (V.C.); (T.K.); (J.w.P.); (S.-Y.J.)
| | - Ji won Park
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (V.C.); (T.K.); (J.w.P.); (S.-Y.J.)
- Developing Product Quality Innovation Team, LG Display, Paju 10845, Republic of Korea
| | - Sang-Yong Jung
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (V.C.); (T.K.); (J.w.P.); (S.-Y.J.)
- SN Bioscience, 422-Na, LH Business Growth Center, 54 Changeop-ro, Sujeong-gu, Seongnam-si 13449, Republic of Korea
| | - Jae-Min Oh
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Republic of Korea; (V.C.); (T.K.); (J.w.P.); (S.-Y.J.)
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3
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Yu S, Choi G, Choy JH. Multifunctional Layered Double Hydroxides for Drug Delivery and Imaging. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1102. [PMID: 36985996 PMCID: PMC10058705 DOI: 10.3390/nano13061102] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/14/2023] [Accepted: 03/17/2023] [Indexed: 06/18/2023]
Abstract
Two-dimensional nanomaterials, particularly layered double hydroxides (LDHs), have been widely applied in the biomedical field owing to their biocompatibility, biodegradability, controllable drug release/loading ability, and enhanced cellular permeability. Since the first study analyzing intercalative LDHs in 1999, numerous studies have investigated their biomedical applications, including drug delivery and imaging; recent research has focused on the design and development of multifunctional LDHs. This review summarizes the synthetic strategies and in-vivo and in-vitro therapeutic actions and targeting properties of single-function LDH-based nanohybrids and recently reported (from 2019 to 2023) multifunctional systems developed for drug delivery and/or bio-imaging.
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Affiliation(s)
- Seungjin Yu
- Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, Republic of Korea
- Intelligent Nanohybrid Materials Laboratory (INML), Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Republic of Korea
| | - Goeun Choi
- Department of Nanobiomedical Science and BK21 PLUS NBM Global Research Center for Regenerative Medicine, Dankook University, Cheonan 31116, Republic of Korea
- Intelligent Nanohybrid Materials Laboratory (INML), Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Republic of Korea
- College of Science and Technology, Dankook University, Cheonan 31116, Republic of Korea
| | - Jin-Ho Choy
- Intelligent Nanohybrid Materials Laboratory (INML), Institute of Tissue Regeneration Engineering (ITREN), Dankook University, Cheonan 31116, Republic of Korea
- Division of Natural Sciences, The National Academy of Sciences, Seoul 06579, Republic of Korea
- Department of Pre-Medical Course, College of Medicine, Dankook University, Cheonan 31116, Republic of Korea
- International Research Frontier Initiative (IRFI), Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan
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4
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Integrating Au@TiOx and Co sites in a tandem photocatalyst for efficient C-C coupling synthesis of ethane. J CO2 UTIL 2023. [DOI: 10.1016/j.jcou.2022.102333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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5
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Li C, Jing H, Wu Z, Jiang D. Layered Double Hydroxides for Photo(electro)catalytic Applications: A Mini Review. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:nano12193525. [PMID: 36234654 PMCID: PMC9565588 DOI: 10.3390/nano12193525] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Revised: 09/25/2022] [Accepted: 10/05/2022] [Indexed: 05/16/2023]
Abstract
Chemical energy conversion strategies by photocatalysis and electrocatalysis are promising approaches to alleviating our energy shortages and environmental issues. Due to the 2D layer structure, adjustable composition, unique thermal decomposition and memory properties, abundant surface hydroxyl, and low cost, layered double hydroxides (LDHs) have attracted extensive attention in electrocatalysis, photocatalysis, and photoelectrocatalysis. This review summarizes the main structural characteristics of LDHs, including tunable composition, thermal decomposition and memory properties, delaminated layer, and surface hydroxyl. Next, the influences of the structural characteristics on the photo(electro)catalytic process are briefly introduced to understand the structure-performance correlations of LDHs materials. Recent progress and advances of LDHs in photocatalysis and photoelectrocatalysis applications are summarized. Finally, the challenges and future development of LDHs are prospected from the aspect of structural design and exploring structure-activity relationships in the photo(electro)catalysis applications.
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Affiliation(s)
- Cheng Li
- School of Physics and Electronic Sciences, Changsha University of Science and Technology, Changsha 410114, China
| | - Huihua Jing
- Hunan Provincial Institute of Product and Goods Quality Inspection, Changsha 410116, China
| | - Zhong Wu
- Tianjin Key Laboratory of Composite and Functional Materials, Key Laboratory of Advanced Ceramics and Machining Technology (Ministry of Education), School of Materials Science and Engineering, Tianjin University, Tianjin 300072, China
- Correspondence: (Z.W.); (D.J.)
| | - Denghui Jiang
- School of Physics and Electronic Sciences, Changsha University of Science and Technology, Changsha 410114, China
- Hunan Provincial Key Laboratory of Flexible Electronic Materials Genome Engineering, Changsha University of Science and Technology, Changsha 410114, China
- Hunan Province Higher Education Key Laboratory of Modeling and Monitoring on the Near-Earth Electromagnetic Environments, Changsha University of Science and Technology, Changsha 410114, China
- Correspondence: (Z.W.); (D.J.)
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6
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Dong Y, Kong X, Luo X, Wang H. Adsorptive removal of heavy metal anions from water by layered double hydroxide: A review. CHEMOSPHERE 2022; 303:134685. [PMID: 35472618 DOI: 10.1016/j.chemosphere.2022.134685] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 04/17/2022] [Accepted: 04/20/2022] [Indexed: 05/07/2023]
Abstract
High-valence heavy metals with high ecotoxicity are generally found in water in the form of anions, and this increases heavy metal pollution intensity and treatment difficulty. Recent studies have pointed to the potential efficiency of layered double hydroxides (LDHs) to meet this challenge. In this review, we retrospectively research the development of LDHs using a Java application called CiteSpace. We describe the unique layer structure, highly adjustable chemical properties, and diverse synthesis methods of LDHs, all of which decide the effective adsorption of heavy metal anions by LDHs. Subsequently, we focus on discussing the adsorption mechanism of LDHs on heavy metal anions, as well as the current state of research and future directions for microscopic interaction mechanisms. For practical applications, it is critical to improve the adsorption selectivity and stability. We then recommend solutions to improve the adsorption selectivity and stability after identifying the influencing mechanism. Finally, we provide our perspectives on the future development of LDHs adsorption of heavy metal anions.
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Affiliation(s)
- Yuecen Dong
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Xiangrui Kong
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Xingshen Luo
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Hongtao Wang
- School of Environment, Tsinghua University, Beijing, 100084, China.
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7
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Sohrabi H, Arbabzadeh O, Falaki M, Majidi MR, Han N, Yoon Y, Khataee A. Electrochemical layered double hydroxide (LDH)-based biosensors for pesticides detection in food and environment samples: A review of status and prospects. Food Chem Toxicol 2022; 164:113010. [DOI: 10.1016/j.fct.2022.113010] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 03/29/2022] [Accepted: 04/09/2022] [Indexed: 12/27/2022]
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8
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Doungmo G, Morais AF, Mustafa D, Kamgaing T, Njanja E, Etter M, Tonlé IK, Terraschke H. How do layered double hydroxides evolve? First in situ insights into their synthesis processes. RSC Adv 2022; 12:33469-33478. [DOI: 10.1039/d2ra05269e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 11/01/2022] [Indexed: 11/23/2022] Open
Abstract
In situ characterisation techniques granted unprecedented experimental access to the formation dynamics of carbonate-intercalated Mg2+/Al3+ LDHs.
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Affiliation(s)
- G. Doungmo
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max Eyth-Str. 2, 24118 Kiel, Germany
- Research Unit of Noxious Chemistry and Environmental Engineering, Department of Chemistry, Faculty of Science University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - A. F. Morais
- Instituto de Física da Universidade de São Paulo, São Paulo 05508-090, Brazil
| | - D. Mustafa
- Instituto de Física da Universidade de São Paulo, São Paulo 05508-090, Brazil
| | - T. Kamgaing
- Research Unit of Noxious Chemistry and Environmental Engineering, Department of Chemistry, Faculty of Science University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - E. Njanja
- Research Unit of Noxious Chemistry and Environmental Engineering, Department of Chemistry, Faculty of Science University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - M. Etter
- Deutsches Elektronen-Synchrotron (DESY), Notkestr. 85, 22607 Hamburg, Germany
| | - I. K. Tonlé
- Research Unit of Noxious Chemistry and Environmental Engineering, Department of Chemistry, Faculty of Science University of Dschang, P.O. Box 67, Dschang, Cameroon
| | - H. Terraschke
- Institut für Anorganische Chemie, Christian-Albrechts-Universität zu Kiel, Max Eyth-Str. 2, 24118 Kiel, Germany
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de Sousa ALMD, Dos Santos WM, de Souza ML, Silva LCPBB, Yun AEHK, Aguilera CSB, Chagas BDF, Rolim LA, da Silva RMF, Neto PJR. Layered Double Hydroxides as Promising Excipients for Drug Delivery Purposes. Eur J Pharm Sci 2021; 165:105922. [PMID: 34217802 DOI: 10.1016/j.ejps.2021.105922] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 06/09/2021] [Accepted: 06/28/2021] [Indexed: 01/20/2023]
Abstract
Layered Double Hydroxides (LDH) have received great attention in the development of drug carrier systems. LDHs have become intelligent excipients of high technological potential for the pharmaceutical industry due to their ability to intercalate biomaterials in the interlayer region, adsorb substances on its vast surface area, have flexible structure, swelling properties, high chemical and thermal stability, modulate drug release, have high biocompatibility and be easily synthesized. This article, using typical examples, mainly addresses the systems formed between LDHs and antimicrobial, antineoplastic and anti-inflammatory agents, which constitute the main pharmacological classes of wide interest due to the problems encountered with low solubility, control in administration, stability in body fluids and toxicity, among others. Additionally, the article also reports on the recent development of ternary or quaternary (multicomponent systems) compounds based on LDH, bringing the advantages of targeted therapy, improving the aqueous stability of nanohybrids and the performance of these inorganic carriers.
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Affiliation(s)
| | - Widson Michael Dos Santos
- Laboratório de Tecnologia de Medicamentos, Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco Brasil
| | - Myla Lôbo de Souza
- Laboratório de Tecnologia de Medicamentos, Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco Brasil
| | | | - Adriana Eun He Koo Yun
- Laboratório de Tecnologia de Medicamentos, Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco Brasil
| | | | - Beatriz de França Chagas
- Laboratório de Tecnologia de Medicamentos, Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco Brasil
| | - Larissa Araújo Rolim
- Central de Análise de Fármacos, Medicamentos e Alimentos, Universidade Federal do Vale do São Francisco (UNIVASF), Petrolina, Pernambuco Brasil
| | | | - Pedro José Rolim Neto
- Laboratório de Tecnologia de Medicamentos, Universidade Federal de Pernambuco (UFPE), Recife, Pernambuco Brasil
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10
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Jia QY, Liu ZL, Li XD, Li SP, Jiang JL, Li DX. Synthesis of spherical MTX/LDHs nanohybrids by the calcination-reconstruction method. J DISPER SCI TECHNOL 2021. [DOI: 10.1080/01932691.2020.1785306] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Qing-Yang Jia
- Jiangsu Key Laboratory of Biofunctional Material, College of Chemistry and Material Science, Nanjing Normal University, Nanjing, China
| | - Zhen-Lei Liu
- Jiangsu Key Laboratory of Biofunctional Material, College of Chemistry and Material Science, Nanjing Normal University, Nanjing, China
| | - Xiao-Dong Li
- Jiangsu Key Laboratory of Biofunctional Material, College of Chemistry and Material Science, Nanjing Normal University, Nanjing, China
| | - Shu-Ping Li
- Jiangsu Key Laboratory of Biofunctional Material, College of Chemistry and Material Science, Nanjing Normal University, Nanjing, China
| | - Jin-Long Jiang
- Jiangsu Provincial Key Laboratory of Palygorskite Science and Applied Technology, Huaiyin Institute of Technology, Huaian, China
| | - Dong-Xiang Li
- State Key Laboratory Base of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, China
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11
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Lee SB, Ko EH, Park JY, Oh JM. Mixed Metal Oxide by Calcination of Layered Double Hydroxide: Parameters Affecting Specific Surface Area. NANOMATERIALS 2021; 11:nano11051153. [PMID: 33925092 PMCID: PMC8145563 DOI: 10.3390/nano11051153] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/20/2021] [Accepted: 04/27/2021] [Indexed: 11/16/2022]
Abstract
Mixed metal oxide (MMO) is one of the widely utilized ceramic materials in various industries. In order to obtain high performance, the specific surface area of MMO should be controlled. Calcination of layered double hydroxide (LDH) is a versatile way to prepare MMO with homogeneous metal distribution and well-developed porosity. Although researchers found that the specific surface area of LDH-originated MMO was relatively high, it had not been systematically investigated how the surface area is controlled under a certain parameter. In this review, we summarized LDH-originated MMO with various starting composition, calcination temperature, and pore developing agent in terms of specific surface area and porosity. Briefly, it was represented that MMOs with Mg-Al components generally had higher specific surface area than Mg-Fe or Zn-Al components. Calcination temperature in the range 300–600 °C resulted in the high specific surface area, while upper or lower temperature reduced the values. Pore developing agent did not result in dramatic increase in MMO; however, the pore size distribution became narrower in the presence of pore developing agents.
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Affiliation(s)
- Su-Bin Lee
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Korea; (S.-B.L.); (E.-H.K.)
| | - Eun-Hye Ko
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Korea; (S.-B.L.); (E.-H.K.)
| | - Joo Y. Park
- Discipline of Information Technology, Media and Communication, Murdoch University, Western Australia 6150, Australia
- Correspondence: (J.Y.P.); (J.-M.O.); Tel.: +61-8-9360-6257 (J.Y.P.); +82-2-2260-4977 (J.-M.O.)
| | - Jae-Min Oh
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Korea; (S.-B.L.); (E.-H.K.)
- Correspondence: (J.Y.P.); (J.-M.O.); Tel.: +61-8-9360-6257 (J.Y.P.); +82-2-2260-4977 (J.-M.O.)
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12
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Świrk K, Zhang H, Li S, Chen Y, Rønning M, Motak M, Grzybek T, Da Costa P. Carbon-resistant NiO-Y2O3-nanostructured catalysts derived from double-layered hydroxides for dry reforming of methane. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.03.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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Development of Mesopore Structure of Mixed Metal Oxide through Albumin-Templated Coprecipitation and Reconstruction of Layered Double Hydroxide. NANOMATERIALS 2021; 11:nano11030620. [PMID: 33801502 PMCID: PMC7999424 DOI: 10.3390/nano11030620] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/16/2021] [Accepted: 02/25/2021] [Indexed: 01/27/2023]
Abstract
Mixed metal oxide (MMO) with relatively homogeneous mesopores was successfully obtained by calcination and reconstruction of albumin-templated layered double hydroxide (LDH). The aggregation degree of albumin-template was controlled by adjusting two different synthesis routes, coprecipitation and reconstruction. X-ray diffraction patterns and scanning electron microscopic images indicated that crystal growth of LDH was fairly limited during albumin-templated coprecipitation due to the aggregation. On the hand, crystal growth along the lateral direction was facilitated in albumin-templated reconstruction due to the homogeneous distribution of proteins moiety. Different state of albumin during LDH synthesis influenced the local disorder and porous structure of calcination product, MMO. The N2 adsorption-desorption isotherms demonstrated that calcination on reconstructed LDH produced MMO with large specific surface area and narrow distribution of mesopores compared with calcination of coprecipitated LDH.
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14
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Qian X, Gu Z, Tang Q, Hong A, Filser J, Sharma VK, Li L. Sulfidation of sea urchin-like zinc oxide nanospheres: Kinetics, mechanisms, and impacts on growth of Escherichia coli. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 741:140415. [PMID: 32599405 DOI: 10.1016/j.scitotenv.2020.140415] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/19/2020] [Accepted: 06/20/2020] [Indexed: 06/11/2023]
Abstract
Nanoscale zinc oxide (n-ZnO) with different morphology and sizes has been used in personal care products due to their antibacterial properties, resulting in discharge of n-ZnO into the environment with potential toxic effect to ecological systems. Sulfidation is one of pathways of transformation of n-ZnO, but a very limited information on the conversion of n-ZnO under sulfidic environment with special morphology such as sea urchin-like zinc oxide nanospheres (ZnO-NSs) is available to know the potential environmental risks of n-ZnO. Herein, sea urchin-like ZnO-NSs with an average size of 78 nm were synthesized and adopted as the model n-ZnO of special morphology. The ZnO-NPs at average sizes of 71 nm (ZnO-NPs-71), 48 nm (ZnO-NPs-48), and 17 nm (ZnO-NPs-17) nm were used to examine possible differences in the sulfidation between the sea urchin-like ZnO-NSs and ZnO-NPs. A new analytical method selectively dissolving ZnO over ZnS in partially sulfidized n-ZnO was developed and applied to understand the kinetics of n-ZnO sulfidation. The sulfidation rate constant (ks) of sea urchin-like ZnO-NSs was 2.9 × 10-3 h-1, comparable to that of ZnO-NPs-71 (4.1 × 10-3 h-1), but much lower than those of ZnO-NPs-48 (20.1 × 10-3 h-1) and ZnO-NPs-17 (67.8 × 10-3 h-1). This might be attributed to the differences in the specific surface area; ks positively correlated with the specific surface area (R2 = 0.97). Natural organic matter (NOM) decreased dissolution and sulfidation of the sea urchin-like ZnO-NSs. Aggregate ZnS nanocrystals instead of the original sea urchin-like ZnO-NSs were observed. We proposed that sea urchin-like ZnO-NSs were transformed to ZnS through a dissolution-precipitation pathway, consistent with the sulfidation pathway of ZnO-NPs. Sulfidation drastically reduced toxicity of sea urchin-like ZnO-NSs to Escherichia coli due to negligible dissolution of ZnS nanocrystals. These results greatly improved our understanding of the transformation and potential risks of n-ZnO with special morphology.
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Affiliation(s)
- Xiaoting Qian
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Zhouhang Gu
- Key Laboratory of Plant Secondary Metabolism and Regulation of Zhejiang Province, College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Qing Tang
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Aimei Hong
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Juliane Filser
- UFT-Centre for Environmental Research and Sustainable Technology, Department General and Theoretical Ecology, Faculty 2 (Biology/Chemistry), University of Bremen, Bremen 28359, Germany
| | - Virender K Sharma
- Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, College Station 77843, United States
| | - Lingxiangyu Li
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou 310018, China.
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On the Reconstruction Peculiarities of Sol–Gel Derived Mg2−xMx/Al1 (M = Ca, Sr, Ba) Layered Double Hydroxides. CRYSTALS 2020. [DOI: 10.3390/cryst10060470] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this study, the reconstruction peculiarities of sol–gel derived Mg2−xMx/Al1 (M = Ca, Sr, Ba) layered double hydroxides were investigated. The mixed metal oxides (MMO) were synthesized by two different routes. Firstly, the MMO were obtained directly by heating Mg(M)–Al–O precursor gels at 650 °C, 800 °C, and 950 °C. These MMO were reconstructed to the Mg2−xMx/Al1 (M = Ca, Sr, Ba) layered double hydroxides (LDHs) in water at 50 °C for 6 h (pH 10). Secondly, in this study, the MMO were also obtained by heating reconstructed LDHs at the same temperatures. The synthesized materials were characterized using X-ray powder diffraction (XRD) analysis and scanning electron microscopy (SEM). Nitrogen adsorption by the Brunauer, Emmett, and Teller (BET) and Barrett, Joyner, and Halenda (BJH) methods were used to determine the surface area and pore diameter of differently synthesized alkaline earth metal substituted MMO compounds. It was demonstrated for the first time that the microstructure of reconstructed MMO from sol–gel derived LDHs showed a “memory effect”.
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Wu L, Peng B, Li Q, Wang Q, Yan X, Li K, Lin Q. Effects of Cu2+ incorporation on ZnAl-layered double hydroxide. NEW J CHEM 2020. [DOI: 10.1039/d0nj00278j] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The incorporation of copper affects the particle size of LDHs and the coordination number of aluminum.
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Affiliation(s)
- Lanyan Wu
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- China
- Institute of Material and Chemical Engineering
| | - Bing Peng
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution
| | - Qingzhu Li
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution
| | - Qingwei Wang
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution
| | - Xu Yan
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- China
- Chinese National Engineering Research Center for Control & Treatment of Heavy Metal Pollution
| | - Kaizhong Li
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- China
| | - Qiuhong Lin
- School of Metallurgy and Environment
- Central South University
- Changsha 410083
- China
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Kim HJ, Lee SB, Choi AJ, Oh JM. Zingiber officinale Extract (ZOE) Incorporated with Layered Double Hydroxide Hybrid through Reconstruction to Preserve Antioxidant Activity of ZOE against Ultrasound and Microwave Irradiation. NANOMATERIALS (BASEL, SWITZERLAND) 2019; 9:E1281. [PMID: 31500346 PMCID: PMC6781092 DOI: 10.3390/nano9091281] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 08/21/2019] [Accepted: 09/04/2019] [Indexed: 11/21/2022]
Abstract
We prepared Zingiber officinale extract (ZOE) incorporated in a layered double hydroxide (LDH) hybrid through a reconstruction method in order to preserve the antioxidant activity of ZOE from ultrasound and microwave irradiation. X-ray patterns, infrared spectroscopy, and scanning electron microscopy suggested that ZOE moieties were encapsulated in the interparticle space of reconstructed LDH, thus preserving its intact structure. Dynamic light scattering and zeta-potential measurement also supported the hypothesis that ZOE moieties were located in the interparticle pore of LDH rather than at the surface of LDH particles. Thermogravimetry analysis revealed that thermal stability of encapsulated ZOE could be enhanced by LDH encapsulation. Radical scavenging assay showed that antioxidant activity of ZOE-LDH hybrid was increased after ultrasound and microwave irradiation, while ZOE itself dramatically lost its antioxidant activity upon ultrasound and microwave treatment.
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Affiliation(s)
- Hyoung-Jun Kim
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Korea
| | - Su-Bin Lee
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Korea
| | - Ae-Jin Choi
- Department of Agrofood Resources, National Institute of Agricultural Sciences of RDA, Wanju 55365, Korea
| | - Jae-Min Oh
- Department of Energy and Materials Engineering, Dongguk University-Seoul, Seoul 04620, Korea.
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Photocatalytic Degradation of 2,4,6-Trichlorophenol by MgO–MgFe2O4 Derived from Layered Double Hydroxide Structures. Catalysts 2019. [DOI: 10.3390/catal9050454] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
In recent years, the search for solutions for the treatment of water pollution by toxic compounds such as phenols and chlorophenols has been increasing. Phenols and their derivatives are widely used in the manufacture of pesticides, insecticides, paper, and wood preservers, among other things. Chlorophenols are partially biodegradable but not directly photodegradable by sunlight and are extremely toxic—especially 2,4,6-trichlorophenol, which is considered to be potentially carcinogenic. As a viable proposal to be applied in the treatment of water contaminated with 2,4,6-trichlorophenol, this paper presents an application study of the thermally activated Mg/Fe layered double hydroxides as photocatalysts for the mineralization of this contaminant. Activated Mg/Fe layered double hydroxides were characterized by X-ray diffraction, thermal analysis, N2 physisorption, and scanning electron microscopy with X-ray dispersive energy. The results of the photocatalytic degradation of 2,4,6-trichlorophenol in aqueous solution showed good photocatalytic activity, with an efficiency of degradation of up to 93% and mineralization of 82%; degradation values which are higher than that of TiO2-P25, which only reached 18% degradation. The degradation capacity is attributed to the structure of the MgO–MgFe2O4 oxides derived from double laminate hydroxide Mg/Fe. A path of degradation based on a mechanism of superoxide and hollow radicals is proposed.
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Kim BK, Lee DY, Gwak GH, Han YS, Oh JM. Zn-Fe mixed metal oxides from metal hydroxide precursor: Effect of calcination temperature on phase evolution, porosity, and catalytic acidity. J SOLID STATE CHEM 2019. [DOI: 10.1016/j.jssc.2018.10.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Świrk K, Gálvez ME, Motak M, Grzybek T, Rønning M, Da Costa P. Yttrium promoted Ni-based double-layered hydroxides for dry methane reforming. J CO2 UTIL 2018. [DOI: 10.1016/j.jcou.2018.08.004] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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