Tomoyuki Hirano

ORCID: 0000-0003-3622-0606
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About
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Research Areas
  • Catalytic Processes in Materials Science
  • Fuel Cells and Related Materials
  • Advanced ceramic materials synthesis
  • Electrocatalysts for Energy Conversion
  • Advanced materials and composites
  • Aluminum Alloys Composites Properties
  • Advanced Polymer Synthesis and Characterization
  • Coagulation and Flocculation Studies
  • Catalysis and Oxidation Reactions
  • Electrohydrodynamics and Fluid Dynamics
  • Advanced Cellulose Research Studies
  • Covalent Organic Framework Applications
  • Marine Biology and Environmental Chemistry
  • Luminescence Properties of Advanced Materials
  • Electrospun Nanofibers in Biomedical Applications
  • Advanced Surface Polishing Techniques
  • Transition Metal Oxide Nanomaterials
  • Mesoporous Materials and Catalysis
  • Catalysts for Methane Reforming
  • Advancements in Photolithography Techniques
  • Microencapsulation and Drying Processes
  • Corrosion Behavior and Inhibition
  • nanoparticles nucleation surface interactions
  • Nanofabrication and Lithography Techniques
  • Nanomaterials for catalytic reactions

Hiroshima University
2018-2025

Tokyo Institute of Technology
2010

Shibaura Institute of Technology
2010

National Defense Academy of Japan
2008

Cosmo Oil (Japan)
2007

Tokyo Ohka Kogyo (Japan)
2005-2006

Mitsubishi Group (Japan)
2005

National Rehabilitation Center for Persons with Disabilities
2005

Osaka City University
2002-2003

Tokushima University
2000

Precisely controlled interconnected pore structure, thin framework, and high macroporosity of three-way catalyst particles using the template-assisted spray method.

10.1039/d4nr03770g article EN cc-by Nanoscale 2025-01-01

The urgent need to mitigate climate change has spurred the development of efficient adsorbents for CO2 capture. Porous solid sorbents, especially those incorporating amine-modified porous silica materials, offer a promising alternative due their superior selectivity and reversibility. However, existing research focused on developing mesoporous adsorption applications, often overlooking role macropores. One critical challenge with is restriction in loading amount amine low pore volume, which...

10.1021/acs.energyfuels.4c02937 article EN Energy & Fuels 2024-08-23

Mass transfer is an essential process that can extend the performance and utilization of nanoporous materials in various applications. Therefore, improving mass has always attracted much interest, macroporous structures are currently being studied to enhance performance. The introduction into three-way catalysts (TWC), which widely utilized control emission polluted gases from vehicles, provides potential their property catalytic However, formation mechanism TWC particles not yet been...

10.1021/acs.langmuir.3c00621 article EN Langmuir 2023-05-26

The conventional pectin delivery systems in the colon are often impaired by a slow release rate. Nanostructured particles, especially porous ones, have gained popularity as drug owing to their high mass transfer efficiency. In this research, particles were synthesized carriers (using indomethacin model drug) via template-assisted spray drying. Specific surface areas of been improved up 203 m2 g-1 compared with nonporous (1 g-1). structure shortened diffusion path and rate molecules....

10.1021/acsabm.3c00218 article EN ACS Applied Bio Materials 2023-06-21

In recent years, transportation-related air pollution has escalated into a global concern, necessitating the development of three-way catalyst (TWC) technology to address harmful emissions. However, efficiency TWC's performance in mitigating these emissions been hindered because limited mass transfer within their structures. Thus, this study attempted overcome existing issue by synthesizing series macroporous TWC particles exhibiting various macropore sizes via template-assisted spray...

10.1021/acsami.3c11489 article EN ACS Applied Materials & Interfaces 2023-11-09

Macroporous niobium-doped tin oxide (NTO) is introduced as a robust alternative to conventional carbon-based catalyst supports 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 water management because their denser structures. To address this tradeoff, we synthesized macroporous particles using flame-assisted spray-drying technique...

10.1021/acs.nanolett.4c01150 article EN Nano Letters 2024-08-14

The introduction of macroporous structures into three-way catalysts (TWCs) through polymer template-assisted spray drying has attracted attention because its enhanced gas diffusion and catalytic performance. However, the surface charge effect polymeric template components not been investigated to control structure TWC particles during synthesis. Thus, this study charges on self-assembly behavior nanoparticles (NPs) drying. NPs with different produced a hollow structure, whereas using same...

10.1021/acs.langmuir.4c00490 article EN Langmuir 2024-04-04

Over the past decade, three-way catalyst (TWC) has become a critical technology for reducing pollutant emissions from gasoline-powered vehicles. Due to global rise in number of vehicles and limited resources, it is necessary operate TWC at high space velocities (SVs) minimize usage expensive metals reduce consumption. However, mass transfer limitation within nanostructure particles hinders full utilization their active surfaces, limiting performance, particularly SVs. To address this...

10.1021/acsanm.3c03954 article EN ACS Applied Nano Materials 2023-09-13

Room-temperature phosphorescent (RTP) carbon dots (CDs) have been increasingly used in many applications, including anticounterfeiting and information encryption. However, synthesizing RTP CDs with a specific average lifetime of phosphorescence remains formidable challenge. A breakthrough is needed formulating the synthesis process to find suitable formulation produce an optimal phosphorescence. Machine learning (ML) has recently successfully for guiding material offering insight into...

10.1021/acsanm.3c06282 article EN ACS Applied Nano Materials 2024-02-28

β-Quartz solid-solution has received significant attention as a consequence of its remarkable properties, including negative thermal expansion coefficient, high mechanical strength, and excellent chemical stability. However, to date, there is no report on the successful production crystalline spherical β-quartz particles. Herein, particles derived from cordierite were successfully fabricated via flame method followed by calcination process, representing first-ever demonstration this type...

10.1021/acsaenm.3c00176 article EN ACS Applied Engineering Materials 2023-07-11

Nanostructured particles with a core–shell structure have been highlighted in recent developments various fields including electronic machinery applications. Applying nonagglomerated nanoscaled-silica-coated soft-magnetic into powder core inductors (PCIs), power converters machines, promises efficiency improvement. In this study, nanostructuring silica-coated FeNi (FeNi@SiO2) was conducted via an aerosol method by introducing the SiO2 (0.4 nm) from hexamethyldisiloxane to particles. The...

10.1021/acsanm.4c01399 article EN ACS Applied Nano Materials 2024-05-03

High-density submicron-sized FeNi particles prepared by a spray pyrolysis route exhibit high magnetic characteristics and enhance the powder core performance indicated improvement of DC bias characteristic value.

10.1039/d1tc05917c article EN Journal of Materials Chemistry C 2022-01-01

Recently, the emphasis on hydrogen-fuel utilization technologies─particularly polymer–electrolyte fuel cells (PEFCs)─has recently shifted from light-duty to heavy-duty vehicles. There is consequently an urgent need develop a catalyst with excellent durability. In this study, we have endeavored improve power-generating performance of PEFCs by using high-durability Nb–SnO2 (NTO) nanoparticles and controlling porosity layer. We tuned fused-aggregate network structure NTO annealing them at 1000...

10.1021/acsaem.3c02165 article EN ACS Applied Energy Materials 2023-12-08

Niobium-doped tin oxide (NTO) particles with a macroporous structure have been developed as catalyst supports for enhancing the durability and performance of polymer electrolyte fuel cells (PEFCs).

10.1039/d4lf00404c article EN cc-by RSC Applied Interfaces 2025-01-01
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