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Imura Lab
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A lab that controls the shape of nanomaterials to create new functions.
AboutAbout the lab
Taking on the challenge of making nanomaterials.
The Imura Lab studies how to create materials with new functions, mainly in optical and catalytic properties, by controlling the shape of nanomaterials.
When gold is made into nano-sized particles, it appears red, blue, or green owing to the behavior of its electrons.
Spherical nanoparticles appear red, while those shaped like konpeito (a spiky Japanese sugar candy) appear blue.
Gold nanoparticles show high catalytic activity as catalysts for oxidation reactions, and this activity improves greatly when they are made in the konpeito shape.
Key terms
- Nano-konpeito
- A nanomaterial shaped like konpeito, a Japanese sugar candy with spiky protrusions. Its surface has a distinctive atomic arrangement and shows high catalytic activity.
- Catalyst
- A substance that makes a chemical reaction proceed more easily. This lab works with catalysts for oxidation reactions.
- Stimuli-responsive nanomaterial
- A nanomaterial whose physical properties change in response to external stimuli, allowing its functions to be switched freely.
ResearchResearch themes
Centered on morphology control of nanomaterials, the lab takes on the challenge of making nanomaterials with new functions, mainly in optical and catalytic properties. Its research themes are methods for producing nanomaterials in different shapes, nano-konpeito catalysts, and materials whose functions change in response to stimuli. The information on the lab's page dates from around 2021.
*Illustrative imageDeveloping methods to control the morphology of nanomaterials
Like water droplets, nanoparticles stabilize in nearly spherical shapes. Non-spherical nanocrystals are unstable but have high potential catalytic performance, and the lab takes on the challenge of synthesizing a variety of shapes by controlling surfaces and interfaces. Its work centers on topics such as the synthesis of nanowire catalysts.
*Illustrative imageDeveloping nano-konpeito with high catalytic performance
The surface of nano-konpeito has a distinctive atomic arrangement, which gives it high catalytic activity. The lab is developing bimetallic nano-konpeito catalysts made of two types of metals, and using two metals can greatly improve catalytic activity.
*Illustrative imageDeveloping stimuli-responsive nanomaterials
Nanomaterials whose physical properties change under external stimuli allow their functions to be switched freely by using that response. The lab has also reported magnetically responsive nano-konpeito catalysts that can be easily recovered and reused with a magnet.
MembersFaculty
- Associate ProfessorYoshiro Imura
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Clustered titanium oxide nanoparticles on stainless steel - 3” Iuliia Karlagina / CC BY-SA 4.0 (cropped)
- Developing methods to control the morphology of nanomaterials: “62cts Brazilian Crystal Opal” Daniel Mekis / CC BY-SA 3.0 (cropped)
- Developing nano-konpeito with high catalytic performance: “Kompeito konpeito” Midori / CC BY-SA 3.0 (cropped)
- Developing stimuli-responsive nanomaterials: “Ferrofluid spikes (magnet placed underneath the fluid)” ChemGeeks / CC BY-SA 2.0 (cropped)
- Related lab (近藤研究室): “Soap bubbles in Algerian grassland” Moh tch / CC BY-SA 4.0 (cropped)
- Related lab (今堀研究室): “Chemical traffic light reaction (green)” Pnotporn / CC BY-SA 4.0 (cropped)
- Related lab (杉本研究室): “HK Central 12 Lan Kwai Fong Rockabilly shop Carbon Dioxide gas bottle Asahi beer Guinness Dec-2015 DSC” Simon Leung gg / CC BY-SA 4.0 (cropped)
- Related lab (橋詰研究室): “Nacreous aragonite ("mother-of-pearl") 7” James St. John / CC BY 2.0 (cropped)
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