1
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Emmanuel M, Papp P, Schuszter G, Deák Á, Janovák L, Tóth Á, Horváth D. Nucleation kinetics of lithium phosphate precipitation. CrystEngComm 2022. [DOI: 10.1039/d2ce00333c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fourth-order kinetics arises from the consecutive complexation leading to precipitation.
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Affiliation(s)
- Michael Emmanuel
- Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Béla tér 1., Szeged, H-6720, Hungary
| | - Paszkál Papp
- Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Béla tér 1., Szeged, H-6720, Hungary
| | - Gábor Schuszter
- Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Béla tér 1., Szeged, H-6720, Hungary
| | - Ágota Deák
- Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Béla tér 1., Szeged, H-6720, Hungary
| | - László Janovák
- Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Béla tér 1., Szeged, H-6720, Hungary
| | - Ágota Tóth
- Department of Physical Chemistry and Materials Science, University of Szeged, Rerrich Béla tér 1., Szeged, H-6720, Hungary
| | - Dezső Horváth
- Department of Applied and Environmental Chemistry, University of Szeged, Rerrich Béla tér 1., Szeged, H-6720, Hungary
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2
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Durai L, Yadav P, Pant H, Srikanth VVSS, Badhulika S. Label-free wide range electrochemical detection of β-carotene using solid state assisted synthesis of hexagonal boron nitride nanosheets. NEW J CHEM 2020. [DOI: 10.1039/d0nj03170d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Label-free, ultra-selective sensing of β-carotene using hBN nanosheets.
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Affiliation(s)
- Lignesh Durai
- Department of Electrical Engineering
- Indian Institute of Technology
- Hyderabad
- India
| | - Pinki Yadav
- Department of Physics
- National Institute of Technology Kurukshetra
- India
| | - Harita Pant
- School of Engineering Sciences and Technology
- University of Hyderabad
- Gachibowli
- Hyderabad 500046
- India
| | - Vadali V. S. S. Srikanth
- School of Engineering Sciences and Technology
- University of Hyderabad
- Gachibowli
- Hyderabad 500046
- India
| | - Sushmee Badhulika
- Department of Electrical Engineering
- Indian Institute of Technology
- Hyderabad
- India
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3
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Zou J, Zhu Q, Li JG. Lactic-acid enhanced solvothermal crystallization, color-tunable photoluminescence, and thermal stability of h-LaPO 4:Ce 3+, Tb 3+, Sm 3+ nanocrystals. CrystEngComm 2020. [DOI: 10.1039/d0ce00491j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Color-tunable photoluminescence of h-(La0.93−xCe0.05TbxSm0.02)PO4 nanocrystals.
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Affiliation(s)
- Junfeng Zou
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education)
- School of Materials Science and Engineering
- Northeastern University
- Shenyang
- China
| | - Qi Zhu
- Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education)
- School of Materials Science and Engineering
- Northeastern University
- Shenyang
- China
| | - Ji-Guang Li
- Research Center for Functional Materials
- National Institute for Materials Science
- Tsukuba
- Japan
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4
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Emmanuel M, Horváth D, Tóth Á. Flow-driven crystal growth of lithium phosphate in microchannels. CrystEngComm 2020. [DOI: 10.1039/d0ce00540a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Flow-driven asymmetric growth of lithium phosphate in the presence of concentration gradients in a microchannel.
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Affiliation(s)
- Michael Emmanuel
- Department of Physical Chemistry and Materials Science
- University of Szeged
- Szeged
- Hungary
| | - Dezső Horváth
- Department of Applied and Environmental Chemistry
- University of Szeged
- Szeged
- Hungary
| | - Ágota Tóth
- Department of Physical Chemistry and Materials Science
- University of Szeged
- Szeged
- Hungary
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5
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Lee SC, Jeong Y, Kim YJ, Kim H, Lee HU, Lee YC, Lee SM, Kim HJ, An HR, Ha MG, Lee GW, Lee YS, Lee G. Hierarchically three-dimensional (3D) nanotubular sea urchin-shaped iron oxide and its application in heavy metal removal and solar-induced photocatalytic degradation. JOURNAL OF HAZARDOUS MATERIALS 2018; 354:283-292. [PMID: 29778038 DOI: 10.1016/j.jhazmat.2018.04.048] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 04/06/2018] [Accepted: 04/20/2018] [Indexed: 06/08/2023]
Abstract
In this study, hierarchically three-dimensional (3D) nanotubular sea urchin-shaped iron oxide nanostructures (3D-Fe2O3) were synthesized by a facile and rapid ultrasound irradiation method. Additives, templates, inert gas atmosphere, pH regulation, and other complicated procedures were not required. Dense 3D-Fe2O3 with a relatively large Brunauer-Emmett-Teller (BET) surface area of 129.4 m2/g was synthesized within 23 min, and the BET surface area was further improved to 282.7 m2/g by a post heat-treatment process. In addition, this post processing led to phase changes from maghemite (γ phase) to hematite (α phase) Fe2O3. Subsequent characterization suggested that the growth mechanism of the 3D-Fe2O3 follows self-assembly and oriented attachment. The prepared 3D-Fe2O3 was applied to wastewater purification. Ultrasound-irradiated 3D-Fe2O3 can eliminate a As(V) and Cr(VI) from water with 25 times faster removal rate by using a one third smaller amount than commercial α-Fe2O3. This was attributed to the inter-particle pores and relatively positively charged surface of the nanostructure. In addition, post heat treatment on ultrasound-irradiated 3D-Fe2O3 significantly influenced the photocatalytic degradation of methylene blue and phenol, with a 25 times higher removal efficiency than that of commercial α-Fe2O3, because of both high BET surface area and good crystallization of the prepared samples.
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Affiliation(s)
- Soon Chang Lee
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Yesul Jeong
- Busan Center, Korea Basic Science Institute (KBSI), Busan 46742, Republic of Korea
| | - Youn Jung Kim
- Center for Research Facilities, Andong National University, Andong 36729, Republic of Korea
| | - Hyeran Kim
- Advanced Nano-surface Research Group, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea
| | - Hyun Uk Lee
- Advanced Nano-surface Research Group, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea.
| | - Young-Chul Lee
- Department of BioNano Technology, Gachon University, 1342 Seongnamdaero, Sujeong-gu, Seongnam-si, Gyeonggi-do 13120, Republic of Korea
| | - Sang Moon Lee
- Nano-Bio Electron Microscopy Research Group, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea
| | - Hae Jin Kim
- Nano-Bio Electron Microscopy Research Group, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea
| | - Ha-Rim An
- Advanced Nano-surface Research Group, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea
| | - Myoung Gyu Ha
- Busan Center, Korea Basic Science Institute (KBSI), Busan 46742, Republic of Korea
| | - Go-Woon Lee
- R&D Platform Center, Korea Institute of Energy Research (KIER), Daejeon 34129, Republic of Korea
| | - Young-Seak Lee
- Department of Chemical Engineering and Applied Chemistry, Chungnam National University, Daejeon 34134, Republic of Korea.
| | - Gaehang Lee
- Division of Scientific Instrumentation, Korea Basic Science Institute (KBSI), Daejeon 34133, Republic of Korea.
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Atallah H, ELcheikh Mahmoud M, Jelle A, Lough A, Hmadeh M. A highly stable indium based metal organic framework for efficient arsenic removal from water. Dalton Trans 2018; 47:799-806. [DOI: 10.1039/c7dt03705h] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Indium based metal organic framework crystals (AUBM-1) were successfully synthesized via a solvothermal synthesis process. SXRD analysis showed the production of a new In-MOF structure with a pts topology. AUBM-1 was shown to be chemically stable and was used as an adsorbent to efficiently remove arsenic from water.
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Affiliation(s)
- Hala Atallah
- Chemistry Department
- American University of Beirut
- 1107 2020 Beirut
- Lebanon
| | | | - Abdinoor Jelle
- Department of Materials Science & Engineering
- University of Toronto
- Toronto
- Canada
| | - Alan Lough
- Department of Chemistry
- University of Toronto
- Toronto
- Canada
| | - Mohamad Hmadeh
- Chemistry Department
- American University of Beirut
- 1107 2020 Beirut
- Lebanon
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Han SD, Xue ZZ, Pan J, Li JH, Wang GM, Wang ZH. Syntheses and Crystal Structures of Three Organically Templated Gallium Phosphates. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Song-De Han
- College of Chemistry and Chemical Engineering; Collaborative Innovation Center for Marine Biomass Fiber; Qingdao University; 266071 Shandong P. R. China
| | - Zhen-Zhen Xue
- College of Chemistry and Chemical Engineering; Collaborative Innovation Center for Marine Biomass Fiber; Qingdao University; 266071 Shandong P. R. China
| | - Jie Pan
- College of Chemistry and Chemical Engineering; Collaborative Innovation Center for Marine Biomass Fiber; Qingdao University; 266071 Shandong P. R. China
| | - Jin-Hua Li
- College of Chemistry and Chemical Engineering; Collaborative Innovation Center for Marine Biomass Fiber; Qingdao University; 266071 Shandong P. R. China
| | - Guo-Ming Wang
- College of Chemistry and Chemical Engineering; Collaborative Innovation Center for Marine Biomass Fiber; Qingdao University; 266071 Shandong P. R. China
| | - Zong-Hua Wang
- College of Chemistry and Chemical Engineering; Collaborative Innovation Center for Marine Biomass Fiber; Qingdao University; 266071 Shandong P. R. China
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Llusar M, Escuder B, López-Castro JDD, Trasobares S, Monrós G. Transcription of Nanofibrous Cerium Phosphate Using a pH-Sensitive Lipodipeptide Hydrogel Template. Gels 2017; 3:gels3020023. [PMID: 30920520 PMCID: PMC6318699 DOI: 10.3390/gels3020023] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 06/05/2017] [Accepted: 06/06/2017] [Indexed: 11/16/2022] Open
Abstract
A novel and simple transcription strategy has been designed for the template-synthesis of CePO₄·xH₂O nanofibers having an improved nanofibrous morphology using a pH-sensitive nanofibrous hydrogel (glycine-alanine lipodipeptide) as structure-directing scaffold. The phosphorylated hydrogel was employed as a template to direct the mineralization of high aspect ratio nanofibrous cerium phosphate, which in-situ formed by diffusion of aqueous CeCl₃ and subsequent drying (60 °C) and annealing treatments (250, 600 and 900 °C). Dried xerogels and annealed CePO₄ powders were characterized by conventional thermal and thermogravimetric analysis (DTA/TG), and Wide-Angle X-ray powder diffraction (WAXD) and X-ray powder diffraction (XRD) techniques. A molecular packing model for the formation of the fibrous xerogel template was proposed, in accordance with results from Fourier-Transformed Infrarred (FTIR) and WAXD measurements. The morphology, crystalline structure and composition of CePO₄ nanofibers were characterized by electron microscopy techniques (Field-Emission Scanning Electron Microscopy (FE-SEM), Transmission Electron Microscopy/High-Resolution Transmission Electron Microscopy (TEM/HRTEM), and Scanning Transmission Electron Microscopy working in High Angle Annular Dark-Field (STEM-HAADF)) with associated X-ray energy-dispersive detector (EDS) and Scanning Transmission Electron Microscopy-Electron Energy Loss (STEM-EELS) spectroscopies. Noteworthy, this templating approach successfully led to the formation of CePO₄·H₂O nanofibrous bundles of rather co-aligned and elongated nanofibers (10⁻20 nm thick and up to ca. 1 μm long). The formed nanofibers consisted of hexagonal (P6₂22) CePO₄ nanocrystals (at 60 and 250 °C), with a better-grown and more homogeneous fibrous morphology with respect to a reference CePO₄ prepared under similar (non-templated) conditions, and transformed into nanofibrous monoclinic monazite (P21/n) around 600 °C. The nanofibrous morphology was highly preserved after annealing at 900 °C under N₂, although collapsed under air conditions. The nanofibrous CePO₄ (as-prepared hexagonal and 900 °C-annealed monoclinic) exhibited an enhanced UV photo-luminescent emission with respect to non-fibrous homologues.
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Affiliation(s)
- Mario Llusar
- Departamento de Química Inorgánica y Orgánica, ESTCE, Universitat Jaume I, Av. de Vicent Sos Baynat s/n, 12071 Castellón de la Plana, Spain.
| | - Beatriu Escuder
- Departamento de Química Inorgánica y Orgánica, ESTCE, Universitat Jaume I, Av. de Vicent Sos Baynat s/n, 12071 Castellón de la Plana, Spain.
| | - Juan De Dios López-Castro
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Universidad de Cádiz, c/República Saharahui s/n, Aptdo. 40, Puerto Real, 11510 Cádiz, Spain.
| | - Susana Trasobares
- Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica, Universidad de Cádiz, c/República Saharahui s/n, Aptdo. 40, Puerto Real, 11510 Cádiz, Spain.
| | - Guillermo Monrós
- Departamento de Química Inorgánica y Orgánica, ESTCE, Universitat Jaume I, Av. de Vicent Sos Baynat s/n, 12071 Castellón de la Plana, Spain.
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Brau F, Schuszter G, De Wit A. Flow Control of A+B→C Fronts by Radial Injection. PHYSICAL REVIEW LETTERS 2017; 118:134101. [PMID: 28409971 DOI: 10.1103/physrevlett.118.134101] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2016] [Indexed: 06/07/2023]
Abstract
The dynamics of A+B→C fronts is analyzed theoretically in the presence of passive advection when A is injected radially into B at a constant inlet flow rate Q. We compute the long-time evolution of the front position, r_{f}, of its width, w, and of the local production rate R of the product C at r_{f}. We show that, while advection does not change the well-known scaling exponents of the evolution of corresponding reaction-diffusion fronts, their dynamics is however significantly influenced by the injection. In particular, the total amount of product varies as Q^{-1/2} for a given volume of injected reactant and the front position as Q^{1/2} for a given time, paving the way to a flow control of the amount and spatial distribution of the reaction front product. This control strategy compares well with calcium carbonate precipitation experiments for which the amount of solid product generated in flow conditions at fixed concentrations of reactants and the front position can be tuned by varying the flow rate.
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Affiliation(s)
- Fabian Brau
- Université libre de Bruxelles (ULB), Nonlinear Physical Chemistry Unit, CP231, 1050 Brussels, Belgium
| | - G Schuszter
- Université libre de Bruxelles (ULB), Nonlinear Physical Chemistry Unit, CP231, 1050 Brussels, Belgium
| | - A De Wit
- Université libre de Bruxelles (ULB), Nonlinear Physical Chemistry Unit, CP231, 1050 Brussels, Belgium
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Schuszter G, De Wit A. Comparison of flow-controlled calcium and barium carbonate precipitation patterns. J Chem Phys 2016; 145:224201. [DOI: 10.1063/1.4971286] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- G. Schuszter
- Université libre de Bruxelles (ULB), Nonlinear Physical Chemistry Unit, CP231, 1050 Brussels, Belgium
| | - A. De Wit
- Université libre de Bruxelles (ULB), Nonlinear Physical Chemistry Unit, CP231, 1050 Brussels, Belgium
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Yarali M, Biçer E, Gürsel SA, Yürüm A. Expansion of titanate nanotubes by the use of a surfactant and its improved performance as an anode in Li-ion batteries. Electrochim Acta 2016. [DOI: 10.1016/j.electacta.2016.10.133] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
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Tóth–Szeles E, Schuszter G, Tóth Á, Kónya Z, Horváth D. Flow-driven morphology control in the cobalt–oxalate system. CrystEngComm 2016. [DOI: 10.1039/c5ce02459e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The presence of fluid flow by maintaining the density gradient and controlling the flow rate provides a simple method to modify the microstructure of cobalt oxalate.
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Affiliation(s)
- Eszter Tóth–Szeles
- Department of Physical Chemistry and Materials Science
- University of Szeged
- Szeged, Hungary
| | - Gábor Schuszter
- Department of Physical Chemistry and Materials Science
- University of Szeged
- Szeged, Hungary
| | - Ágota Tóth
- Department of Physical Chemistry and Materials Science
- University of Szeged
- Szeged, Hungary
| | - Zoltán Kónya
- Department of Applied and Environmental Chemistry
- University of Szeged
- Szeged, Hungary
| | - Dezső Horváth
- Department of Applied and Environmental Chemistry
- University of Szeged
- Szeged, Hungary
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