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Hirano T, Tsuboi T, Ho TTN, Tanabe E, Takano A, Kataoka M, Ogi T. Macroporous Structures of Nb-SnO 2 Particles as a Catalyst Support Induce High Porosity and Performance in Polymer Electrolyte Fuel Cell Catalyst Layers. NANO LETTERS 2024. [PMID: 39140557 DOI: 10.1021/acs.nanolett.4c01150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Macroporous niobium-doped tin oxide (NTO) is introduced as a robust alternative to conventional carbon-based catalyst supports to improve the durability and performance of polymer electrolyte fuel cells (PEFCs). Metal oxides like NTO are more stable than carbon under PEFC operational conditions, but they can compromise gas diffusion and water management because of their denser structures. To address this tradeoff, we synthesized macroporous NTO particles using a flame-assisted spray-drying technique employing poly(methyl methacrylate) as a templating agent. X-ray diffraction analysis and scanning electron microscopy confirmed the preservation of crystallinity and revealed a macroporous morphology with larger pore volumes and diameters than those in flame-made NTO nanoparticles, as revealed by mercury porosimetry. The macroporous NTO particles exhibited enhanced maximum current density and reduced gas diffusion resistance relative to commercial carbon supports. Our findings establish a foundation for integrating macroporous NTO structures into PEFCs to optimize durability and performance.
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Affiliation(s)
- Tomoyuki Hirano
- Chemical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Takama Tsuboi
- Chemical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Thi Thanh Nguyen Ho
- Chemical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Eishi Tanabe
- Hiroshima Prefectural Institute of Industrial Science and Technology, 3-10-31 Kagamiyama, Higashi Hiroshima, Hiroshima 739-0046, Japan
| | - Aoi Takano
- Cataler Corporation, 7800 Chihama, Kakegawa, Shizuoka 437-1492, Japan
| | - Mikihiro Kataoka
- Cataler Corporation, 7800 Chihama, Kakegawa, Shizuoka 437-1492, Japan
| | - Takashi Ogi
- Chemical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
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2
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Ratnasari D, Septiani EL, Dani Nandiyanto AB, Le Anh Cao K, Okuda N, Matsumoto H, Hirano T, Ogi T. Nanostructuring silica-iron core-shell particles in a one-step aerosol process. RSC Adv 2024; 14:18171-18180. [PMID: 38854827 PMCID: PMC11155725 DOI: 10.1039/d4ra01154f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 05/30/2024] [Indexed: 06/11/2024] Open
Abstract
Silica-coated iron (Fe@SiO2) particles have attracted considerable interest as a potential powder core material due to their distinctive advantages, including higher magnetic saturation and enhanced electrical resistance. In this study, the submicron-sized core-shell Fe@SiO2 particles were successfully synthesized in a single step via an aerosol process using a spray pyrolysis method assisted by a swirler connector for the first time. Changing the reducing agent concentration (supplied H2) and tuning the number of core (Fe) particles were investigated to achieve the desired Fe@SiO2 particles. The results indicated that an excessive number of cores led to the appearance of FeO crystals due to insufficient reduction. Conversely, an insufficient number of cores resulted in a thicker SiO2 shell, which hindered the penetration of the supplied H2 gas. Furthermore, the produced Fe@SiO2 particles exhibited soft-ferromagnetic characteristics with an excellent magnetic saturation value of 2.04 T, which is close to the standard theoretical value of 2.15 T. This work contributes new insights into the production of core-shell Fe@SiO2 particles, expanding their applicability to advanced soft-magnetic materials.
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Affiliation(s)
- Delyana Ratnasari
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan
| | - Eka Lutfi Septiani
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan
| | - Asep Bayu Dani Nandiyanto
- Program Studi Kimia, Fakultas Pendidikan Matematika dan Ilmu Pengetahuan Alam, Universitas Pendidikan Indonesia Jl. Setiabudhi No 229 Bandung West Java 40154 Indonesia
| | - Kiet Le Anh Cao
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan
| | - Nobuhiro Okuda
- Materials Research Center, Technology & Intellectual Property HQ, TDK Corporation 570-2 Matsugashita, Minami-Hadori Narita Chiba 286-8588 Japan
| | - Hiroyuki Matsumoto
- Materials Research Center, Technology & Intellectual Property HQ, TDK Corporation 570-2 Matsugashita, Minami-Hadori Narita Chiba 286-8588 Japan
| | - Tomoyuki Hirano
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan
| | - Takashi Ogi
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan
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Saipul Bahri NSN, Nguyen TT, Matsumoto K, Watanabe M, Morita Y, Septiani EL, Cao KLA, Hirano T, Ogi T. Controlling the Magnetic Responsiveness of Cellulose Nanofiber Particles Embedded with Iron Oxide Nanoparticles. ACS APPLIED BIO MATERIALS 2024; 7:3227-3237. [PMID: 38627897 DOI: 10.1021/acsabm.4c00213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/21/2024]
Abstract
2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO)-oxidized cellulose nanofiber (TOCN) particles, an innovative biobased material derived from wood biomass, have garnered significant interest, particularly in the biomedical field, for their distinctive properties as biocompatible particle adsorbents. However, their microscopic size complicates their separation in liquid media, thereby impeding their application in various domains. In this study, superparamagnetic magnetite nanoparticles (NPs), specifically iron oxide Fe3O4 NPs with an average size of 15 nm, were used to enhance the collection efficiency of TOCN-Fe3O4 composite particles synthesized through spray drying. These composite particles exhibited a remarkable ζ-potential (approximately -50 mV), indicating their high stability in water, as well as impressive magnetization properties (up to 47 emu/g), and rapid magnetic responsiveness within 60 s in water (3 wt % Fe3O4 to TOCN, 1 T magnet). Furthermore, the influence of Fe3O4 NP concentrations on the measurement of the speed of magnetic separation was quantitatively discussed. Additionally, the binding affinity of the synthesized particles for proteins was assessed on a streptavidin-biotin binding system, offering crucial insights into their binding capabilities with specific proteins and underscoring their significant potential as functionalized biomedical materials.
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Affiliation(s)
- Nur Syakirah Nabilah Saipul Bahri
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima 739-8527, Japan
| | - Tue Tri Nguyen
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima 739-8527, Japan
| | - Kohei Matsumoto
- Life Sciences Headquarters, DKS Co. Ltd., 5 Ogawara, Kisshoin, Minami, Kyoto 601-8391, Japan
| | - Mai Watanabe
- Life Sciences Headquarters, DKS Co. Ltd., 5 Ogawara, Kisshoin, Minami, Kyoto 601-8391, Japan
| | - Yuko Morita
- Life Sciences Headquarters, DKS Co. Ltd., 5 Ogawara, Kisshoin, Minami, Kyoto 601-8391, Japan
| | - Eka Lutfi Septiani
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima 739-8527, Japan
| | - Kiet Le Anh Cao
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima 739-8527, Japan
| | - Tomoyuki Hirano
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima 739-8527, Japan
| | - Takashi Ogi
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima, Hiroshima 739-8527, Japan
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Kautsar DB, Le PH, Ando A, Cao KLA, Septiani EL, Hirano T, Ogi T. Controllable Synthesis of Porous and Hollow Nanostructured Catalyst Particles and Their Soot Oxidation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:8260-8270. [PMID: 38574288 DOI: 10.1021/acs.langmuir.4c00490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
The introduction of macroporous structures into three-way catalysts (TWCs) through polymer template-assisted spray drying has attracted attention because of its enhanced gas diffusion and catalytic performance. However, the surface charge effect of polymeric template components has not been investigated to control the structure of the TWC particles during synthesis. Thus, this study investigated the effect of template surface charges on the self-assembly behavior of TWC nanoparticles (NPs) during drying. The self-assembly of TWC NPs and polymer particles with different charges produced a hollow structure, whereas using the same charges generated a porous one. Consequently, the mechanism of particle self-assembly during drying and final structure particle formation is proposed in this study. Here, porous TWC particles demonstrated a faster oxidation of soot particles than that of hollow-structured particles. This occurred as a result of the larger contact area between the catalyst surface and the solid reactant. Our findings propose a fundamental self-assembly mechanism for the formation of different TWC structures, thereby enhancing soot oxidation performance using macroporous structures.
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Affiliation(s)
- Duhaul Biqal Kautsar
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Phong Hoai Le
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Ai Ando
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Kiet Le Anh Cao
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Eka Lutfi Septiani
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Tomoyuki Hirano
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Takashi Ogi
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
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Wintzheimer S, Luthardt L, Cao KLA, Imaz I, Maspoch D, Ogi T, Bück A, Debecker DP, Faustini M, Mandel K. Multifunctional, Hybrid Materials Design via Spray-Drying: Much more than Just Drying. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2306648. [PMID: 37840431 DOI: 10.1002/adma.202306648] [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: 07/07/2023] [Revised: 08/30/2023] [Indexed: 10/17/2023]
Abstract
Spray-drying is a popular and well-known "drying tool" for engineers. This perspective highlights that, beyond this application, spray-drying is a very interesting and powerful tool for materials chemists to enable the design of multifunctional and hybrid materials. Upon spray-drying, the confined space of a liquid droplet is narrowed down, and its ingredients are forced together upon "falling dry." As detailed in this article, this enables the following material formation strategies either individually or even in combination: nanoparticles and/or molecules can be assembled; precipitation reactions as well as chemical syntheses can be performed; and templated materials can be designed. Beyond this, fragile moieties can be processed, or "precursor materials" be prepared. Post-treatment of spray-dried objects eventually enables the next level in the design of complex materials. Using spray-drying to design (particulate) materials comes with many advantages-but also with many challenges-all of which are outlined here. It is believed that multifunctional, hybrid materials, made via spray-drying, enable very unique property combinations that are particularly highly promising in myriad applications-of which catalysis, diagnostics, purification, storage, and information are highlighted.
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Affiliation(s)
- Susanne Wintzheimer
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058, Erlangen, Germany
- Fraunhofer-Institute for Silicate Research ISC, Neunerplatz 2, 97082, Würzburg, Germany
| | - Leoni Luthardt
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058, Erlangen, Germany
| | - Kiet Le Anh Cao
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8527, Japan
| | - Inhar Imaz
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, and Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, Barcelona, 08193, Spain
- Departament de Química, Facultat de Ciències, Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain
| | - Daniel Maspoch
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, and Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, Barcelona, 08193, Spain
- Departament de Química, Facultat de Ciències, Universitat Autònoma de Barcelona, Bellaterra, 08193, Spain
- ICREA, Pg. Lluís Companys 23, Barcelona, 08010, Spain
| | - Takashi Ogi
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8527, Japan
| | - Andreas Bück
- Institute of Particle Technology, Department of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstraße 4, 91058, Erlangen, Germany
| | - Damien P Debecker
- Université catholique de Louvain (UCLouvain), Institute of Condensed Matter and Nanosciences (IMCN), Place Louis Pasteur, 1, 348, Louvain-la-Neuve, Belgium
| | - Marco Faustini
- Sorbonne Université, Collège de France, CNRS, Laboratoire Chimie de la Matière Condensée de Paris (LCMCP), Paris, F-75005, France
- Institut Universitaire de France (IUF), Paris, 75231, France
| | - Karl Mandel
- Inorganic Chemistry, Department of Chemistry and Pharmacy, Friedrich-Alexander-Universität Erlangen-Nürnberg, Egerlandstraße 1, 91058, Erlangen, Germany
- Fraunhofer-Institute for Silicate Research ISC, Neunerplatz 2, 97082, Würzburg, Germany
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Law ZX, Tsai DH. Exploring the Challenges of Calcium Looping Integrated with Methane Bireforming for Enhanced Carbon Capture and Utilization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14782-14790. [PMID: 37788018 DOI: 10.1021/acs.langmuir.3c02217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
The urgent need to mitigate greenhouse gas emissions and combat climate change has driven research in carbon capture and utilization (CCU) technologies. Among these, calcium looping (CaL) has emerged as a prominent candidate for CO2 capture. This study aimed to explore the novel integration of CaL with methane bireforming (BRM) using CaO-Ni/CeO2 as dual-function material (DFM) and investigated the challenges and opportunities associated with the process. Implementing a calcium looping-bireforming (CaL-BRM) process revealed distinct differences compared to methane dry reforming (DRM). Notably, methane conversion occurred at higher temperatures, likely due to competition with the formation of Ca(OH)2. Meanwhile, the conversion of CO2 was delayed, possibly because hydroxide species on the CaO surfaces hindered the availability of CO2 for methane reforming. To address these challenges, Ni/CeO2 and CaO-Ni/CeO2 catalysts were employed in conventional catalytic gas-phase BRM and methane steam reforming (SRM) reactions. The results demonstrated that the presence of CaO significantly influenced BRM efficiency due to the Ca(OH)2 formation, as was evident by the results of the characterization on the postreaction catalysts and the parallel study of SRM. This study contributes valuable insights into the feasibility and potential of CaL-BRM, advancing the development of sustainable CCU technologies.
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Affiliation(s)
- Zhi Xuan Law
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30044, Taiwan, R.O.C
| | - De-Hao Tsai
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu 30044, Taiwan, R.O.C
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Ratnasari D, Septiani EL, Cao KLA, Hirano T, Okuda N, Matsumoto H, Ogi T. Synthesis of Submicron-Sized Spherical Silica-Coated Iron Nickel Particles with Adjustable Shell Thickness via Swirler Connector-Assisted Spray Pyrolysis. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14063-14073. [PMID: 37738531 DOI: 10.1021/acs.langmuir.3c01900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
Silica-coated iron nickel (FeNi@SiO2) particles have attracted significant attention because of their potential applications in electronic devices. In this work, submicron-sized spherical FeNi@SiO2 particles with precisely controllable shell thickness were successfully synthesized for the first time using a swirler connector-assisted spray pyrolysis system, comprising a preheater, specific connector, and main heater. The results indicated that the thickness of the SiO2 shell can be tuned from 3 to 23 nm by adjusting the parameter conditions (i.e., preheater temperature, SiO2 supplied amount). Furthermore, our fabrication method consistently yielded a high coating ratio of more than 94%, indicating an excellent quality of the synthesized particles. Especially, to gain an in-depth understanding of the particle formation process of the FeNi@SiO2 particles, a plausible mechanism was also investigated. These findings highlight the importance of controlling the preheater and SiO2 supplied amount to obtain FeNi@SiO2 particles with desirable morphology and high coating quality.
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Affiliation(s)
- Delyana Ratnasari
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Eka Lutfi Septiani
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Kiet Le Anh Cao
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Tomoyuki Hirano
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Nobuhiro Okuda
- Materials Research Center, Intellectual Property HQ, TDK Corporation, 570-2 Matsugashita, Minami-Hadori, Narita, Chiba 286-8588, Japan
| | - Hiroyuki Matsumoto
- Materials Research Center, Intellectual Property HQ, TDK Corporation, 570-2 Matsugashita, Minami-Hadori, Narita, Chiba 286-8588, Japan
| | - Takashi Ogi
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
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Nguyen TT, Toyoda Y, Saipul Bahri NSN, Rahmatika AM, Cao KLA, Hirano T, Takahashi K, Goi Y, Morita Y, Watanabe M, Ogi T. Tuning of water resistance and protein adsorption capacity of porous cellulose nanofiber particles prepared by spray drying with cross-linking reaction. J Colloid Interface Sci 2023; 630:134-143. [DOI: 10.1016/j.jcis.2022.10.078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/26/2022] [Accepted: 10/16/2022] [Indexed: 11/21/2022]
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Du CB, Law ZX, Huang RY, Tsai DH. Aerosol-phase synthesis of bimetallic NiCu oxide-decorated CeO2 nanoparticle cluster for catalytic methane combustion. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Synthesis of macroporous three-way catalysts via template-assisted spray process for enhancing mass transfer in gas adsorption. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103581] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Müssig S, Reichstein J, Miller F, Mandel K. Colorful Luminescent Magnetic Supraparticles: Expanding the Applicability, Information Capacity, and Security of Micrometer-Scaled Identification Taggants by Dual-Spectral Encoding. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107511. [PMID: 35146912 DOI: 10.1002/smll.202107511] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/10/2022] [Indexed: 06/14/2023]
Abstract
(Sub)micrometer-scaled identification (ID) taggants enable direct identification of arbitrary goods, thereby opening up application fields based on the possibility of tracking, tracing, and anti-counterfeiting. Due to their small dimensions, these taggants can equip in principle even the smallest subcomponents or raw materials with information. To achieve the demanded applicability, the mostly used optically encoded ID taggants must be further improved. Here, micrometer-scaled supraparticles with spectrally encoded luminescent and magnetically encoded signal characteristics are reported. They are produced in a readily customizable bottom-up fabrication procedure that enables precise adjustment of luminescent and magnetic properties on multiple hierarchy levels. The incorporation of commonly used magnetic nanoparticles and fluorescent dyes, respectively, into polymer nanocomposite particles, establishes a convenient toolbox of magnetic and luminescent building blocks. The subsequent assembly of selected building blocks in the desired ratios into supraparticles grants for all the flexibility to freely adjust both signal characteristics. The obtained spectrally resolved visible luminescent and invisible magnetic ID signatures are complementary in nature, thus expanding applicability and information security compared to recently reported optical- or magnetic-encoded taggants. Additionally, the introduced ID taggant supraparticles can significantly enhance the coding capacity. Therefore, the introduced supraparticles are considered as next-generation ID taggants.
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Affiliation(s)
- Stephan Müssig
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, D-91058, Erlangen, Germany
| | - Jakob Reichstein
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, D-91058, Erlangen, Germany
| | - Franziska Miller
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, D-91058, Erlangen, Germany
| | - Karl Mandel
- Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander University Erlangen-Nürnberg (FAU), Egerlandstraße 1, D-91058, Erlangen, Germany
- Fraunhofer Institute for Silicate Research ISC, Neunerplatz 2, D-97082, Würzburg, Germany
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Nguyen TT, Miyauchi M, Rahmatika AM, Cao KLA, Tanabe E, Ogi T. Enhanced Protein Adsorption Capacity of Macroporous Pectin Particles with High Specific Surface Area and an Interconnected Pore Network. ACS APPLIED MATERIALS & INTERFACES 2022; 14:14435-14446. [PMID: 35302745 DOI: 10.1021/acsami.1c22307] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
There has been much interest in developing protein adsorbents using nanostructured particles, which can be engineered porous materials with fine control of the surface and pore structures. A significant challenge in designing porous adsorbents is the high percentage of available binding sites in the pores owing to their large surface areas and interconnected pore networks. In this study, continuing the idea of using porous materials derived from natural polymers toward the goal of sustainable development, porous pectin particles are reported. The template-assisted spray drying method using calcium carbonate (CaCO3) as a template for pore formation was applied to prepare porous pectin particles. The specific surface area was controlled from 177.0 to 222.3 m2 g-1 by adjusting the CaCO3 concentration. In addition, the effects of a macroporous structure, the specific surface area, and an interconnected pore network on the protein (lysozyme) adsorption capacity and adsorption mechanism were investigated. All porous pectin particles performed rapid adsorption (∼65% total capacity within 5 min) and high adsorption capacity, increasing from 1543 to the highest value of 2621 mg g-1. The results are attributed to the high percentage of available binding sites located in the macropores owing to their large surface areas and interconnected pore networks. The macroporous particles obtained in this study showed a higher adsorption capacity (2621 mg g-1) for lysozyme than other adsorbents. Moreover, the rapid uptake and high performance of this material show its potential as an advanced adsorbent for various macromolecules in the food and pharmaceutical fields.
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Affiliation(s)
- Tue Tri Nguyen
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan
| | - Masato Miyauchi
- Tobacco Science Research Center, Japan Tobacco Inc., 6-2 Umegaoka, Aoba-ku, Yokohama 227-8512, Japan
| | - Annie M Rahmatika
- Department of Bioresources Technology and Veterinary, Vocational College, Gadjah Mada University, Sekip Unit 1 Catur Tunggal, Depok Sleman, D.I. Yogyakarta 55281, Indonesia
| | - Kiet Le Anh Cao
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan
| | - Eishi Tanabe
- Western Region Industrial Research Center, Hiroshima Prefectural Technology Research Institute, 3-13-26 Kagamiyama, Higashihiroshima 739-0046, Japan
| | - Takashi Ogi
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan
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Hashimoto M, Takahashi S, Kawahara K, Ogawa T, Kawashita M. Effect of heating conditions on the magnetic properties of micron-sized carboxyl modified-magnetite particles synthesized by a spray pyrolysis and heating process. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2021.103412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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14
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Septiani EL, Kikkawa J, Cao KLA, Hirano T, Okuda N, Matsumoto H, Enokido Y, Ogi T. Direct synthesis of submicron FeNi particles via spray pyrolysis using various reduction agents. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.09.031] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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15
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Dani Nandiyanto AB, Kito Y, Hirano T, Ragadhita R, Le PH, Ogi T. Spherical submicron YAG:Ce particles with controllable particle outer diameters and crystallite sizes and their photoluminescence properties. RSC Adv 2021; 11:30305-30314. [PMID: 35480242 PMCID: PMC9041146 DOI: 10.1039/d1ra04800g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Accepted: 09/03/2021] [Indexed: 11/21/2022] Open
Abstract
The purpose of this study was to demonstrate the preparation of spherical submicron YAG:Ce particles with controllable particle outer diameters and crystallite sizes and their photoluminescence (PL) properties, which were produced using a flame-assisted spray-pyrolysis method followed by the annealing process. The correlation of particle outer diameter, crystallite size, and PL performance of the prepared particles was also investigated. Experimental results showed that the increases in the particle outer diameters have an impact on the obtainment of higher PL performance. Large particle outer diameters permitted the crystallites to grow more, whereas this is in contrast to the condition for small particle outer diameter having limitations in crystallite growth. This study also found that too large outer diameter (>557 nm) was not effective since crystallites cannot grow anymore and it permits possible scattering problems. This study provides significant information for optimizing synthesis parameters for controlling particle outer diameters and crystallite sizes, which could be relevant to other functional properties, especially for lens, solar cell, and LED applications. We demonstrate the synthesis of spherical submicron YAG:Ce particles with controllable particle outer diameters and crystallite sizes and their photoluminescence properties, produced by a flame-assisted spray-pyrolysis method with annealing process.![]()
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Affiliation(s)
- Asep Bayu Dani Nandiyanto
- Departemen Kimia, Universitas Pendidikan Indonesia Jl. Dr Setiabudhi No. 229 Bandung 40154 Indonesia
| | - Yusuke Kito
- Chemical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima City Hiroshima 739-8527 Japan +81-82-424-3765 +81-82-424-3765
| | - Tomoyuki Hirano
- Chemical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima City Hiroshima 739-8527 Japan +81-82-424-3765 +81-82-424-3765
| | - Risti Ragadhita
- Departemen Kimia, Universitas Pendidikan Indonesia Jl. Dr Setiabudhi No. 229 Bandung 40154 Indonesia
| | - Phong Hoai Le
- Chemical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima City Hiroshima 739-8527 Japan +81-82-424-3765 +81-82-424-3765
| | - Takashi Ogi
- Chemical Engineering Program, Graduate School of Advanced Science and Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima City Hiroshima 739-8527 Japan +81-82-424-3765 +81-82-424-3765
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16
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Cao KLA, Kitamoto Y, Iskandar F, Ogi T. Sustainable porous hollow carbon spheres with high specific surface area derived from Kraft lignin. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2021.04.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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17
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Nguyen TT, Rahmatika AM, Miyauchi M, Cao KLA, Ogi T. Synthesis of High Specific Surface Area Macroporous Pectin Particles by Template-Assisted Spray Drying. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:4256-4266. [PMID: 33780254 DOI: 10.1021/acs.langmuir.1c00232] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Many types of porous particles containing inorganic and organic substances, such as carbon, metals, metal oxides, inorganic-organic hybrids, and polymers, have been developed. However, natural polymer-derived particles are relatively rare. To our knowledge, this report describes the first synthetic method for obtaining meso-/macroporous particles made from pectin, which is a natural polymer with a wide range of biological activities suitable for active substance support applications. These porous particles were prepared using a template-assisted spray-drying method, followed by a chemical etching process. An organic template [i.e., poly(methyl methacrylate) (PMMA)] or an inorganic template [i.e., calcium carbonate (CaCO3)] was used to evaluate the resulting formation of macroporous structures in the pectin particles. Furthermore, the concentration of the templates in the precursor solution was varied to better understand the mechanism of porous pectin particle formation. The results showed that the final porous particles maintained the characteristic properties of pectin. The differences between the two templates resulted in two distinct types of porous particles that differed in their particle morphologies (i.e., spherical or wrinkled), particle sizes (ranging from 3 to 8 μm), pore sizes (ranging from 80 to 350 nm), and pore volume (ranging from 0.024 to 1.40 cm3 g-1). Especially, the porous pectin particles using the CaCO3 template have a significantly high specific surface area of 171.2 m2 g-1, which is 114 times higher than that of nonporous pectin particles. These data demonstrated the potential for using PMMA and CaCO3 templates to control and design desired porous materials.
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Affiliation(s)
- Tue Tri Nguyen
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan
| | - Annie M Rahmatika
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan
- Department of Bioresources Technology and Veterinary, Vocational College, Gadjah Mada University, Sekip Unit 1 Catur Tunggal, Depok Sleman, D.I. Yogyakarta 55281, Indonesia
| | - Masato Miyauchi
- Tobacco Science Research Center, Japan Tobacco Inc., 6-2 Umegaoka, Aoba-ku, Yokohama 227-8512, Japan
| | - Kiet Le Anh Cao
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan
| | - Takashi Ogi
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan
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18
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Tse JY, Kadota K, Imakubo T, Uchiyama H, Tozuka Y. Enhancement of the extra-fine particle fraction of levofloxacin embedded in excipient matrix formulations for dry powder inhaler using response surface methodology. Eur J Pharm Sci 2021; 156:105600. [DOI: 10.1016/j.ejps.2020.105600] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 09/10/2020] [Accepted: 10/13/2020] [Indexed: 01/31/2023]
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Cao KLA, Rahmatika AM, Kitamoto Y, Nguyen MTT, Ogi T. Controllable synthesis of spherical carbon particles transition from dense to hollow structure derived from Kraft lignin. J Colloid Interface Sci 2020; 589:252-263. [PMID: 33460856 DOI: 10.1016/j.jcis.2020.12.077] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 12/20/2020] [Accepted: 12/21/2020] [Indexed: 02/06/2023]
Abstract
The tailored synthesis of carbon particles with controllable shapes and structures from biomass as a raw material would be highly beneficial to meet the demands of various applications of carbon materials from the viewpoint of sustainable development goals. In this work, the spherical carbon particles were successfully synthesized through a spray drying method followed by the carbonization process, using Kraft lignin as the carbon source and potassium hydroxide (KOH) as the activation agent. As the results, the proposed method successfully controlled the shape and structure of the carbon particles from dense to hollow by adjusting the KOH concentration. Especially, this study represents the first demonstration that KOH plays a crucial role in the formation of particles with good sphericity and dense structures. In addition, to obtain an in-depth understanding of the particle formation of carbon particles, a possible mechanism is also investigated in this article. The resulting spherical carbon particles exhibited dense structures with a specific surface area (1233 m2g-1) and tap density (1.46 g cm-3) superior to those of irregular shape carbon particles.
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Affiliation(s)
- Kiet Le Anh Cao
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Annie Mufyda Rahmatika
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan; Department of Biotechnology and Veterinary, Vocational School, Gadjah Mada University, Sekip Unit 1 Catur Tunggal, Depok Sleman, D.I. Yogyakarta 55281, Indonesia
| | - Yasuhiko Kitamoto
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan
| | - Mai Thanh Thi Nguyen
- Faculty of Chemistry, University of Science, Vietnam National University Ho Chi Minh City, Ho Chi Minh City 72711, Viet Nam
| | - Takashi Ogi
- Chemical Engineering Program, Department of Advanced Science and Engineering, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8527, Japan.
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20
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Yazdian Kashani S, Afzalian A, Shirinichi F, Keshavarz Moraveji M. Microfluidics for core-shell drug carrier particles - a review. RSC Adv 2020; 11:229-249. [PMID: 35423057 PMCID: PMC8691093 DOI: 10.1039/d0ra08607j] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 12/07/2020] [Indexed: 01/07/2023] Open
Abstract
Core-shell drug-carrier particles are known for their unique features. Due to the combination of superior properties not exhibited by the individual components, core-shell particles have gained a lot of interest. The structures could integrate core and shell characteristics and properties. These particles were designed for controlled drug release in the desired location. Therefore, the side effects would be minimized. So, these particles' advantages have led to the introduction of new methods and ideas for their fabrication. In the past few years, the generation of drug carrier core-shell particles in microfluidic chips has attracted much attention. This method makes it possible to produce particles at nanometer and micrometer levels of the same shape and size; it usually costs less than other methods. The other advantages of using microfluidic techniques compared to conventional bulk methods are integration capability, reproducibility, and higher efficiency. These advantages have created a positive outlook on this approach. This review gives an overview of the various fluidic concepts that are used to generate microparticles or nanoparticles. Also, an overview of traditional and more recent microfluidic devices and their design and structure for the generation of core-shell particles is given. The unique benefits of the microfluidic technique for core-shell drug carrier particle generation are demonstrated.
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Affiliation(s)
- Sepideh Yazdian Kashani
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic) 1591634311 Tehran Iran +98 21 64543182
| | - Amir Afzalian
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic) 1591634311 Tehran Iran +98 21 64543182
| | - Farbod Shirinichi
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic) 1591634311 Tehran Iran +98 21 64543182
| | - Mostafa Keshavarz Moraveji
- Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic) 1591634311 Tehran Iran +98 21 64543182
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21
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Gi H, Shinzato K, Balgis R, Ogi T, Sadakane M, Wang Y, Isobe S, Miyaoka H, Ichikawa T. Effective Factor on Catalysis of Niobium Oxide for Magnesium. ACS OMEGA 2020; 5:21906-21912. [PMID: 32905312 PMCID: PMC7469650 DOI: 10.1021/acsomega.0c03101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 08/07/2020] [Indexed: 06/11/2023]
Abstract
Magnesium is a promising hydrogen storage material but requires an efficient catalyst to enhance the sluggish kinetics of its hydrogen desorption/absorption reactions. Niobium catalysts have been shown to accomplish this, but the effective factors for catalysis on hydrogen desorption/absorption of Mg are not well understood. In order to investigate these aspects, various types of Nb oxides were synthesized and mixed with Mg, and their catalytic properties were investigated. The spray pyrolysis synthesis of Nb oxides at different temperatures produced homogeneous spherical particles with different degrees of crystallinity, while Nb oxide particles synthesized by simple calcination of ammonium niobium oxalate were nonuniform. These Nb oxides show significant catalytic activities for the hydrogen desorption/absorption of Mg, with amorphous oxides being more effective catalyst precursors than crystalline precursors. Metastable, amorphous Nb oxide is more easily converted to the reduced state, which is the catalytically active state for the reactions. In addition, Nb in the deactivated sample is in the oxidized state compared with the initially activated sample, and the catalytically active (reduced) state is recovered by reactions with hydrogen. Based on these findings, it is concluded that the chemical state of Nb is an important factor in catalyzing the desorption/absorption of hydrogen by Mg, and the catalytically active state can be preserved without further treatments.
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Affiliation(s)
- Hiroyuki Gi
- Graduate
School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Keita Shinzato
- Graduate
School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Ratna Balgis
- Graduate
School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Takashi Ogi
- Graduate
School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Masahiro Sadakane
- Graduate
School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Yongming Wang
- Creative
Research Institution, Hokkaido University, N-21, W-10, Sapporo 001-0021, Japan
| | - Shigehito Isobe
- Graduate
School of Engineering, Hokkaido University, N-13, W-8, Sapporo 060-8628, Japan
| | - Hiroki Miyaoka
- Graduate
School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
- Natural
Science Center for Basic Research and Development, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan
| | - Takayuki Ichikawa
- Graduate
School of Advanced Science and Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
- Graduate
School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
- Natural
Science Center for Basic Research and Development, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima 739-8530, Japan
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22
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Rahmatika AM, Goi Y, Kitamura T, Morita Y, Iskandar F, Ogi T. Silica-supported carboxylated cellulose nanofibers for effective lysozyme adsorption: Effect of macropore size. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.05.021] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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23
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Chiang HL, Chen YS, Sun YA, Wong DSH, Tsai DH. Aerosol Spray Controlled Synthesis of Nanocatalyst using Differential Mobility Analysis Coupled to Fourier-Transform Infrared Spectroscopy. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c00685] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hsin-Li Chiang
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30013 Republic of China
| | - Yu-Shen Chen
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30013 Republic of China
| | - Yu-An Sun
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30013 Republic of China
| | - David Shan-Hill Wong
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30013 Republic of China
| | - De-Hao Tsai
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, Taiwan, 30013 Republic of China
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24
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Spray-drying synthesis of Na2Fe1-Mn PO4F/C cathodes: A facile synergetic strategy harvesting superior sodium storage. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.01.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Fauziyah M, Widiyastuti W, Setyawan H. Sulfonated carbon aerogel derived from coir fiber as high performance solid acid catalyst for esterification. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.01.022] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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26
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Ogi T, Fukazawa H, Rahmatika AM, Hirano T, Cao KLA, Iskandar F. Improving the Crystallinity and Purity of Monodisperse Ag Fine Particles by Heating Colloidal Sprays In-Flight. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.9b05482] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Takashi Ogi
- Department of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Hiroshima 739-8527, Japan
| | - Hiromitsu Fukazawa
- Department of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Hiroshima 739-8527, Japan
| | - Annie Mufyda Rahmatika
- Department of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Hiroshima 739-8527, Japan
| | - Tomoyuki Hirano
- Department of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Hiroshima 739-8527, Japan
| | - Kiet Le Anh Cao
- Department of Chemical Engineering, Hiroshima University, 1-4-1 Kagamiyama, Hiroshima 739-8527, Japan
| | - Ferry Iskandar
- Department of Physics, Institute of Technology Bandung, Ganesha 10, Bandung, West Java 40132, Indonesia
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27
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Improved photochromic stability in less deficient cesium tungsten bronze nanoparticles. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2019.11.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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28
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Wang HL, Hsu CY, Wu KC, Lin YF, Tsai DH. Functional nanostructured materials: Aerosol, aerogel, and de novo synthesis to emerging energy and environmental applications. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2019.09.039] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Mahdavi Z, Rezvani H, Keshavarz Moraveji M. Core–shell nanoparticles used in drug delivery-microfluidics: a review. RSC Adv 2020; 10:18280-18295. [PMID: 35517190 PMCID: PMC9053716 DOI: 10.1039/d0ra01032d] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Accepted: 04/19/2020] [Indexed: 11/26/2022] Open
Abstract
Developments in the fields of lab-on-a-chip and microfluidic technology have benefited nanomaterial production processes due to fluid miniaturization. The ability to acquire, manage, create, and modify structures on a nanoscale is of great interest in scientific and technological fields. Recently, more attention has been paid to the production of core–shell nanomaterials because of their use in various fields, such as drug delivery. Heterostructured nanomaterials have more reliable performance than the individual core or shell materials. Nanoparticle synthesis is a complex process; therefore, various techniques exist for the production of different types of nanoparticles. Among these techniques, microfluidic methods are unique and reliable routes, which can be used to produce nanoparticles for drug delivery applications. Developments in the fields of lab-on-a-chip and microfluidic technology have benefited nanomaterial production processes due to fluid miniaturization.![]()
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Affiliation(s)
- Zahra Mahdavi
- Department of Chemical Engineering
- Amirkabir University of Technology (Tehran Polytechnic)
- Tehran
- Iran
| | - Hamed Rezvani
- Department of Petroleum Engineering
- Amirkabir University of Technology (Tehran Polytechnic)
- Tehran
- Iran
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30
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A particle technology approach toward designing dry-powder inhaler formulations for personalized medicine in respiratory diseases. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2019.10.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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31
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Nandiyanto ABD, Ogi T, Wang WN, Gradon L, Okuyama K. Template-assisted spray-drying method for the fabrication of porous particles with tunable structures. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2019.08.037] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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32
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Anh Cao KL, Arif AF, Kamikubo K, Izawa T, Iwasaki H, Ogi T. Controllable Synthesis of Carbon-Coated SiO x Particles through a Simultaneous Reaction between the Hydrolysis-Condensation of Tetramethyl Orthosilicate and the Polymerization of 3-Aminophenol. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:13681-13692. [PMID: 31558027 DOI: 10.1021/acs.langmuir.9b02599] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Core-shell particles are desirable for many applications, but the precise design and control of their structure remains a great challenge. In this work, we developed a strategy to fabricate carbon-coated SiOx (SiOx@C) core-shell particles via a sol-gel method using the simultaneous hydrolysis-condensation of tetramethyl orthosilicate (TMOS), the polymerization of 3-aminophenol and formaldehyde in the presence of ammonia as a basic catalyst, and cetyltrimethylammonium bromide (CTAB) as a cationic surfactant in the mixed solution of water and methanol followed by the carbonization process. Results from this study provide new insight into the design of core-shell particles by using TMOS as an effective silica precursor for the first time with a well-controlled reaction rate and spherical morphology. To obtain an in-depth understanding of the formation of core-shell structure, a possible mechanism is also proposed in this article. When tested as an anode material for lithium ion batteries (LIBs), the obtained SiOx@C particles delivered a reversible capacity of 509.2 mAh g-1 at a current density of 100 mA g-1. This electrochemical performance is significantly better than those of similar composites without the core-shell structure. The capacity retention after 100 cycles was approximately 80%. These results suggest great promise for the proposed SiOx@C particles with core-shell structure, which may have potential applications in the improvement of various energy-storage materials.
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Affiliation(s)
- Kiet Le Anh Cao
- Department of Chemical Engineering, Graduate School of Engineering , Hiroshima University , 1-4-1 Kagamiyama, Higashi-Hiroshima , Hiroshima 739-8527 , Japan
| | - Aditya F Arif
- Department of Chemical Engineering, Graduate School of Engineering , Hiroshima University , 1-4-1 Kagamiyama, Higashi-Hiroshima , Hiroshima 739-8527 , Japan
- Department of New Investment , P. T. Rekayasa Industri Holding Company , Jl. Kalibata Timur I No. 36 , Jakarta 12740 , Indonesia
| | - Kazuki Kamikubo
- Department of Chemical Engineering, Graduate School of Engineering , Hiroshima University , 1-4-1 Kagamiyama, Higashi-Hiroshima , Hiroshima 739-8527 , Japan
| | - Takafumi Izawa
- Department of Chemical Engineering, Graduate School of Engineering , Hiroshima University , 1-4-1 Kagamiyama, Higashi-Hiroshima , Hiroshima 739-8527 , Japan
- Battery Materials Research Laboratory , Kurashiki Research Center , Kuraray Co., Ltd., 2045-1 Sakazu , Kurashiki , Okayama 710-0801 , Japan
| | - Hideharu Iwasaki
- Battery Materials Research Laboratory , Kurashiki Research Center , Kuraray Co., Ltd., 2045-1 Sakazu , Kurashiki , Okayama 710-0801 , Japan
| | - Takashi Ogi
- Department of Chemical Engineering, Graduate School of Engineering , Hiroshima University , 1-4-1 Kagamiyama, Higashi-Hiroshima , Hiroshima 739-8527 , Japan
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33
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Volochaev VA, Novomlinskii IN, Bayan EM, Guterman VE. Nanostructured Platinum Catalyst Supported by Titanium Dioxide. RUSS J ELECTROCHEM+ 2019. [DOI: 10.1134/s1023193519090143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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34
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Zhao J, Li W, Liu H, Shi H, Xiao C. Yolk-shell CdS@void@TiO2 composite particles with photocorrosion resistance for enhanced dye removal and hydrogen evolution. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2019.06.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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35
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Rahmatika AM, Goi Y, Kitamura T, Widiyastuti W, Ogi T. TEMPO-oxidized cellulose nanofiber (TOCN) decorated macroporous silica particles: Synthesis, characterization, and their application in protein adsorption. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 105:110033. [PMID: 31546405 DOI: 10.1016/j.msec.2019.110033] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 07/22/2019] [Accepted: 07/29/2019] [Indexed: 02/06/2023]
Abstract
Effective protein adsorption has attracted attention for broad application in the biomedical field. In this study, we introduce the synthesis of a TEMPO-oxidized cellulose nanofiber (TOCN) decorated macroporous SiO2 (TOCN@macroporous SiO2) particle and its protein adsorption performance. The TOCN@macroporous SiO2 particles have a unique cellulose nanofiber network structure on the macroporous, highly-negative zeta potential (-62 ± 2 mV) and high surface area (30.8 m2/g) for dried-state cellulose based particles. These characteristics provide sites that are rich in electrostatic interaction to exhibit an outstanding adsorption capacity of lysozyme (1865 mg/g). Furthermore, the TOCN@macroporous SiO2 particles have remarkably high reusability (>90% adsorption capacity) and good release of adsorbate (>80%) after 10 times of use. The material proposed in this paper has the potential for application in drug delivery, protein adsorption, biosensors, and other biomedical fields.
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Affiliation(s)
- Annie M Rahmatika
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan; Department of Biotechnology and Veterinary, Vocational School, Gadjah Mada University, Sekip Unit 1 Catur Tunggal, Depok Sleman, D.I. Yogyakarta 55281, Indonesia
| | - Yohsuke Goi
- R&D Headquarters, DKS Co. Ltd., 5 Ogawara-Cho, Kisshoin, Minami-Ku, Kyoto 601-8391, Japan
| | - Takeo Kitamura
- R&D Headquarters, DKS Co. Ltd., 5 Ogawara-Cho, Kisshoin, Minami-Ku, Kyoto 601-8391, Japan
| | - W Widiyastuti
- Department of Chemical Engineering, Faculty of Industrial Technology, Sepuluh Nopember Institute of Technology, Kampus ITS Sukolilo, Surabaya 60111, Indonesia
| | - Takashi Ogi
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan.
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Nakakura S, Arif AF, Machida K, Adachi K, Ogi T. Cationic Defect Engineering for Controlling the Infrared Absorption of Hexagonal Cesium Tungsten Bronze Nanoparticles. Inorg Chem 2019; 58:9101-9107. [PMID: 31244089 DOI: 10.1021/acs.inorgchem.9b00642] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cesium tungsten bronzes (Cs0.32WO3) have attracted much attention as a near-infrared absorbing material. We report the successful synthesis of highly crystalline and high purity Cs0.32WO3 nanoparticles through a spray pyrolysis route. Careful analyses disclosed the presence of cationic defects, that is, a tungsten deficiency and insufficient Cs doping in the Cs0.32WO3 nanoparticles. These cationic defects can be controlled by facile heat treatment in a mildly reducing atmosphere. In particular, we clarify that the tungsten deficiency is a key factor among the cationic defects to obtain high near-infrared absorption properties. Furthermore, this study clearly demonstrates the precise tunability of the optical properties by means of the lattice constants of the Cs0.32WO3 crystal. The realized range of lattice constants is significantly wider than those previously reported. These findings should contribute to the engineering of Cs0.32WO3 structure and properties.
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Affiliation(s)
- Shuhei Nakakura
- Department of Chemical Engineering , Hiroshima University , 1-4-1 Kagamiyama , Higashihiroshima , Hiroshima 739-8527 , Japan.,Ichikawa Research Center , Sumitomo Metal Mining Co., Ltd , 3-18-5 Nakakokubun , Ichikawa , Chiba 272-8588 , Japan
| | - Aditya Farhan Arif
- Department of Chemical Engineering , Hiroshima University , 1-4-1 Kagamiyama , Higashihiroshima , Hiroshima 739-8527 , Japan
| | - Keisuke Machida
- Ichikawa Research Center , Sumitomo Metal Mining Co., Ltd , 3-18-5 Nakakokubun , Ichikawa , Chiba 272-8588 , Japan
| | - Kenji Adachi
- Ichikawa Research Center , Sumitomo Metal Mining Co., Ltd , 3-18-5 Nakakokubun , Ichikawa , Chiba 272-8588 , Japan
| | - Takashi Ogi
- Department of Chemical Engineering , Hiroshima University , 1-4-1 Kagamiyama , Higashihiroshima , Hiroshima 739-8527 , Japan
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Hirano T, Kikkawa J, Rinaldi FG, Kitawaki K, Shimokuri D, Tanabe E, Ogi T. Tubular Flame Combustion for Nanoparticle Production. Ind Eng Chem Res 2019. [DOI: 10.1021/acs.iecr.9b00620] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tomoyuki Hirano
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima, Hiroshima 739-8527, Japan
| | - Jun Kikkawa
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima, Hiroshima 739-8527, Japan
| | - Febrigia Ghana Rinaldi
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima, Hiroshima 739-8527, Japan
| | - Kenshi Kitawaki
- Department of Mechanical Science and Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima, Hiroshima 739-8527, Japan
| | - Daisuke Shimokuri
- Department of Mechanical Science and Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima, Hiroshima 739-8527, Japan
| | - Eishi Tanabe
- Hiroshima Prefectural Institute of Industrial Science and Technology, 3-10-31 Kagamiyama, Higashi Hiroshima, Hiroshima 739-0046, Japan
| | - Takashi Ogi
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima, Hiroshima 739-8527, Japan
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Tan K, Heo S, Foo M, Chew IM, Yoo C. An insight into nanocellulose as soft condensed matter: Challenge and future prospective toward environmental sustainability. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 650:1309-1326. [PMID: 30308818 DOI: 10.1016/j.scitotenv.2018.08.402] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 08/28/2018] [Accepted: 08/28/2018] [Indexed: 06/08/2023]
Abstract
Nanocellulose, a structural polysaccharide that has caught tremendous interests nowadays due to its renewability, inherent biocompatibility and biodegradability, abundance in resource, and environmental friendly nature. They are promising green nanomaterials derived from cellulosic biomass that can be disintegrated into cellulose nanofibrils (CNF) or cellulose nanocrystals (CNC), relying on their sensitivity to hydrolysis at the axial spacing of disordered domains. Owing to their unique mesoscopic characteristics at nanoscale, nanocellulose has been widely researched and incorporated as a reinforcement material in composite materials. The world has been consuming the natural resources at a much higher speed than the environment could regenerate. Today, as an uprising candidate in soft condensed matter physics, a growing interest was received owing to its unique self-assembly behaviour and quantum size effect in the formation of three-dimensional nanostructured material, could be utilised to address an increasing concern over global warming and environmental conservation. In spite of an emerging pool of knowledge on the nanocellulose downstream application, that was lacking of cross-disciplinary study of its role as a soft condensed matter for food, water and energy applications toward environmental sustainability. Here we aim to provide an insight for the latest development of cellulose nanotechnology arises from its fascinating physical and chemical characteristic for the interest of different technology holders.
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Affiliation(s)
- KhangWei Tan
- Department of Environmental Science and Engineering, Center for Environmental Studies, Kyung Hee University, Yongin-Si 446-701, Republic of Korea
| | - SungKu Heo
- Department of Environmental Science and Engineering, Center for Environmental Studies, Kyung Hee University, Yongin-Si 446-701, Republic of Korea.
| | - MeiLing Foo
- School of Engineering, Monash University Malaysia, 47500 Subang Jaya, Selangor, Malaysia.
| | - Irene MeiLeng Chew
- School of Engineering, Monash University Malaysia, 47500 Subang Jaya, Selangor, Malaysia.
| | - ChangKyoo Yoo
- Department of Environmental Science and Engineering, Center for Environmental Studies, Kyung Hee University, Yongin-Si 446-701, Republic of Korea.
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Nakakura S, Arif AF, Rinaldi FG, Hirano T, Tanabe E, Balgis R, Ogi T. Direct synthesis of highly crystalline single-phase hexagonal tungsten oxide nanorods by spray pyrolysis. ADV POWDER TECHNOL 2019. [DOI: 10.1016/j.apt.2018.09.040] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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40
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Self-organization of colloidal particles during drying of a droplet: Modeling and experimental study. ADV POWDER TECHNOL 2018. [DOI: 10.1016/j.apt.2018.09.036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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41
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Hirano T, Nakakura S, Rinaldi FG, Tanabe E, Wang WN, Ogi T. Synthesis of highly crystalline hexagonal cesium tungsten bronze nanoparticles by flame-assisted spray pyrolysis. ADV POWDER TECHNOL 2018. [DOI: 10.1016/j.apt.2018.07.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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42
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Rinaldi FG, Arutanti O, Arif AF, Hirano T, Ogi T, Okuyama K. Correlations between Reduction Degree and Catalytic Properties of WO x Nanoparticles. ACS OMEGA 2018; 3:8963-8970. [PMID: 31459029 PMCID: PMC6644510 DOI: 10.1021/acsomega.8b01110] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 08/03/2018] [Indexed: 05/29/2023]
Abstract
Degrading organic dyes via catalytic processes for waste water purification is an important research topic from the environmental conservation point of view. Herein, the catalytic performance of tungsten blue oxide (WO x ) nanoparticles was investigated systematically by varying the reduction temperature. The optimum reduction temperature to obtain the most stable WO x phase was obtained when plasma-synthesized WO3 nanoparticles were thermally reduced at 425 °C. The as-synthesized nanoparticles had an average diameter of 10 nm and a calculated band gap of 2.37 eV, which is lower than that of the WO3 nanoparticles (2.61 eV). The WO x nanoparticles exhibited an excellent performance in degrading rhodamine B under dark conditions and visible light irradiation, with a reaction rate constant 93 times higher than that of the WO3 nanoparticles.
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Affiliation(s)
- Febrigia Ghana Rinaldi
- Department of Chemical
Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima 739-8527, Japan
| | - Osi Arutanti
- Research
Center for Chemistry, Indonesian Institute
of Sciences, Kawasan Puspitek, Serpong, Tangerang 15314, Indonesia
| | - Aditya Farhan Arif
- Department of Chemical
Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima 739-8527, Japan
| | - Tomoyuki Hirano
- Department of Chemical
Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima 739-8527, Japan
| | - Takashi Ogi
- Department of Chemical
Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima 739-8527, Japan
| | - Kikuo Okuyama
- Department of Chemical
Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi Hiroshima 739-8527, Japan
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43
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Rahmatika AM, Yuan W, Arif AF, Balgis R, Miyajima K, Anilkumar GM, Okuyama K, Ogi T. Energy-Efficient Templating Method for the Industrial Production of Porous Carbon Particles by a Spray Pyrolysis Process Using Poly(methyl methacrylate). Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02564] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Annie M. Rahmatika
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan
- Department of Biotechnology and Veterinary, Vocational School, Gadjah Mada University, Sekip Unit 1 Catur Tunggal, Depok Sleman, Daerah Istimewa Yogyakarta 55281, Indonesia
| | - Weilin Yuan
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan
| | - Aditya F. Arif
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan
| | - Ratna Balgis
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan
| | - Keita Miyajima
- Research and Development Center, Noritake Co., Limited, 300 Higashiyama, Miyoshi-cho, Miyoshi, Aichi 470-0293, Japan
| | - Gopinathan M. Anilkumar
- Research and Development Center, Noritake Co., Limited, 300 Higashiyama, Miyoshi-cho, Miyoshi, Aichi 470-0293, Japan
| | - Kikuo Okuyama
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan
| | - Takashi Ogi
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashihiroshima 739-8527, Japan
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44
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Qomariyah L, Arif AF, Widiyastuti W, Winardi S, Taniguchi S, Ogi T. Hexagonal hollow silica plate particles with high transmittance under ultraviolet-visible light. RSC Adv 2018; 8:26277-26282. [PMID: 35541960 PMCID: PMC9082784 DOI: 10.1039/c8ra04787a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 07/12/2018] [Indexed: 11/21/2022] Open
Abstract
Creating hollow structures is one strategy for tuning the optical properties of materials. The current study aimed to increase the optical transmittance of silica (SiO2) particles. To this end, hexagonal-shaped hollow silica plate (HHSP) particles were synthesized from tetraethyl orthosilicate (TEOS) and zinc oxide (ZnO) template particles, using a microwave-assisted hydrothermal method. The size and shell thickness of the HHSP particles could be adjusted by using different TEOS/ZnO molar ratios and different ZnO template sizes, respectively. The optical transmittance of the HHSP particles depended on the shell thickness and particle size. The highest transmittance was 99% in the ultraviolet and visible region (300-800 nm) and was exhibited by HHSP particles with the thinnest shell thickness of 6.3 nm. This transmittance was higher than that exhibited by spherical hollow silica particles with a similar shell thickness. This suggested morphology-dependent transmittance for the semiconducting material. These preliminary results illustrate the promising features of the HHSP particles and suggest their potential application in future transparent devices.
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Affiliation(s)
- Lailatul Qomariyah
- Department of Chemical Engineering, Faculty of Industrial Technology, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo Surabaya 60111 Indonesia
| | - Aditya F Arif
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan
| | - W Widiyastuti
- Department of Chemical Engineering, Faculty of Industrial Technology, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo Surabaya 60111 Indonesia
| | - Sugeng Winardi
- Department of Chemical Engineering, Faculty of Industrial Technology, Institut Teknologi Sepuluh Nopember, Kampus ITS Sukolilo Surabaya 60111 Indonesia
| | - Shuto Taniguchi
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan
| | - Takashi Ogi
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima Hiroshima 739-8527 Japan
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45
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Arif A, Taniguchi S, Izawa T, Kamikubo K, Iwasaki H, Ogi T. Microwave-Assisted Synthesis of C/SiO 2 Composite with Controllable Silica Nanoparticle Size. ACS OMEGA 2018; 3:4063-4069. [PMID: 31458642 PMCID: PMC6641396 DOI: 10.1021/acsomega.8b00340] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Accepted: 04/04/2018] [Indexed: 05/14/2023]
Abstract
A C/SiO2 composite was produced from 3-aminophenol and tetraethyl orthosilicate (TEOS) by a synthesis protocol that involved microwave irradiation. This protocol featured simultaneous 3-aminophenol polymerization and TEOS hydrolysis and condensation, which were achieved rapidly in a microwave reactor. The SiO2 component was formed from low-concentration TEOS confined in cetyltrimethylammonium bromide micelles. We demonstrated a control of the SiO2 particle size, ranging from 20 to 90 nm, by varying the 3-aminophenol concentration. The carbon component provided a microporous structure that greatly contributed to the high specific surface area, 375 m2/g, and served as a host for the nitrogen functional groups with a content of 5.34%, 74% of which were pyridinic type. The composite formation mechanism was clarified from time-series scanning electron microscopy images and dynamic light scattering analysis. An understanding of the composite formation mechanism in this protocol will enable the design of composite morphologies for specific applications.
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Affiliation(s)
- Aditya
F. Arif
- Department
of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8527, Japan
| | - Shuto Taniguchi
- Department
of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8527, Japan
| | - Takafumi Izawa
- Department
of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8527, Japan
- Battery
Materials Research Laboratory, Kurashiki
Research Center, Kuraray Co., Ltd., 2045-1 Sakazu, Kurashiki, Okayama 710-0801, Japan
| | - Kazuki Kamikubo
- Department
of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8527, Japan
| | - Hideharu Iwasaki
- Battery
Materials Research Laboratory, Kurashiki
Research Center, Kuraray Co., Ltd., 2045-1 Sakazu, Kurashiki, Okayama 710-0801, Japan
| | - Takashi Ogi
- Department
of Chemical Engineering, Graduate School of Engineering, Hiroshima University, 1-4-1 Kagamiyama, Higashi-hiroshima, Hiroshima 739-8527, Japan
- E-mail: . Tel/Fax: +81-82-424-3765
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46
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Arif AF, Kobayashi Y, Schneider EM, Hess SC, Balgis R, Izawa T, Iwasaki H, Taniguchi S, Ogi T, Okuyama K, Stark WJ. Selective Low-Energy Carbon Dioxide Adsorption Using Monodisperse Nitrogen-Rich Hollow Carbon Submicron Spheres. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:30-35. [PMID: 29215894 DOI: 10.1021/acs.langmuir.7b01353] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Monodisperse, nitrogen-doped hollow carbon spheres of submicron size were synthesized using hexamethoxymethylmelamine as both a carbon and nitrogen source in a short (1 h) microwave-assisted synthesis. After carbonization at 550 °C, porous carbon spheres with a remarkably high nitrogen content of 37.1% were obtained, which consisting mainly of highly basic pyridinic moieties. The synthesized hollow spheres exhibited high selectivity for carbon dioxide (CO2) over nitrogen and oxygen gases, with a capture capacity up to 1.56 mmol CO2 g-1. The low adsorption enthalpy of the synthesized hollow carbon spheres permits good adsorbent regeneration. Evaluation of the feasibility of scaling up shows their potential for large-scale applications.
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Affiliation(s)
- Aditya F Arif
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University , 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Yuma Kobayashi
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University , 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Elia M Schneider
- Institute for Chemical and Bioengineering, ETH Zurich , Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - Samuel C Hess
- Institute for Chemical and Bioengineering, ETH Zurich , Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - Ratna Balgis
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University , 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Takafumi Izawa
- Battery Materials Research Laboratory, Kurashiki Research Center, Kuraray Co., Ltd. , 2045-1, Sakazu, Kurashiki, Okayama 710-0801, Japan
| | - Hideharu Iwasaki
- Battery Materials Research Laboratory, Kurashiki Research Center, Kuraray Co., Ltd. , 2045-1, Sakazu, Kurashiki, Okayama 710-0801, Japan
| | - Shuto Taniguchi
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University , 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Takashi Ogi
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University , 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Kikuo Okuyama
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University , 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Wendelin J Stark
- Institute for Chemical and Bioengineering, ETH Zurich , Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
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47
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Rinaldi FG, Arif AF, Ogi T, Okuyama K, Tanabe E. Strong metal-support interactions (SMSIs) between Pt and Ti 3+ on Pt/TiO x nanoparticles for enhanced degradation of organic pollutant. ADV POWDER TECHNOL 2017. [DOI: 10.1016/j.apt.2017.09.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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48
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Correlation between particle size/domain structure and magnetic properties of highly crystalline Fe 3O 4 nanoparticles. Sci Rep 2017; 7:9894. [PMID: 28855564 PMCID: PMC5577113 DOI: 10.1038/s41598-017-09897-5] [Citation(s) in RCA: 203] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 07/31/2017] [Indexed: 12/23/2022] Open
Abstract
Highly crystalline single-domain magnetite Fe3O4 nanoparticles (NPs) are important, not only for fundamental understanding of magnetic behaviour, but also for their considerable potential applications in biomedicine and industry. Fe3O4 NPs with sizes of 10–300 nm were systematically investigated to reveal the fundamental relationship between the crystal domain structure and the magnetic properties. The examined Fe3O4 NPs were prepared under well-controlled crystal growth conditions using a large-scale liquid precipitation method. The crystallite size of cube-like NPs estimated from X-ray diffraction pattern increased linearly as the particle size (estimated by transmission electron microscopy) increased from 10 to 64.7 nm, which indicates that the NPs have a single-domain structure. This was further confirmed by the uniform lattice fringes. The critical size of approximately 76 nm was obtained by correlating particle size with both crystallite size and magnetic coercivity; this was reported for the first time in this study. The coercivity of cube-like Fe3O4 NPs increased to a maximum of 190 Oe at the critical size, which suggests strong exchange interactions during spin alignment. Compared with cube-like NPs, sphere-like NPs have lower magnetic coercivity and remanence values, which is caused by the different orientations of their polycrystalline structure.
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Balgis R, Widiyastuti W, Ogi T, Okuyama K. Enhanced Electrocatalytic Activity of Pt/3D Hierarchical Bimodal Macroporous Carbon Nanospheres. ACS APPLIED MATERIALS & INTERFACES 2017; 9:23792-23799. [PMID: 28653532 DOI: 10.1021/acsami.7b05873] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Proton exchange membrane fuel cells require electrocatalysts with a high platinum (Pt) loading, large active surface area, and favorable hydrodynamic profile for practical applications. Here, we report the design of three-dimensional hierarchical bimodal macroporous carbon nanospheres with an interconnected pore system, which are applied as an electrocatalyst support. Carbon-supported Pt (Pt/C) catalysts were prepared by aerosol spray pyrolysis followed by microwave chemical deposition. The hierarchical porous structures not only increased the dispersion of Pt nanoparticles but also improved catalytic performance. A hierarchical bimodal macroporous Pt/C catalyst with a mixture of 30 and 120 nm size pores showed the best performance. The electrochemical surface area and mass activity values of this support were 96 m2 g-1-Pt and 378 mA mg-1-Pt, respectively at a Pt loading of 15 wt %.
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Affiliation(s)
- Ratna Balgis
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University , 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - W Widiyastuti
- Department of Chemical Engineering, Institut Teknologi Sepuluh Nopember , Kampus ITS Sukolilo, Surabaya 60111, Indonesia
| | - Takashi Ogi
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University , 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
| | - Kikuo Okuyama
- Department of Chemical Engineering, Graduate School of Engineering, Hiroshima University , 1-4-1 Kagamiyama, Higashi-Hiroshima 739-8527, Japan
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Balgis R, Ernawati L, Ogi T, Okuyama K, Gradon L. Controlled surface topography of nanostructured particles prepared by spray-drying process. AIChE J 2017. [DOI: 10.1002/aic.15682] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Ratna Balgis
- Dept. of Chemical Engineering, Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Lusi Ernawati
- Dept. of Chemical Engineering, Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Takashi Ogi
- Dept. of Chemical Engineering, Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Kikuo Okuyama
- Dept. of Chemical Engineering, Graduate School of Engineering; Hiroshima University; Higashi-Hiroshima 739-8527 Japan
| | - Leon Gradon
- Faculty of Chemical and Process Engineering; Warsaw University of Technology; Warsaw 00-645 Poland
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