Highly Dispersed Ni Nanoclusters Spontaneously Formed on Hydrogen Boride Sheets
Hydrogen boride (HB) sheets are two-dimensional materials comprising a negatively charged hexagonal boron network and positively charged hydrogen atoms with a stoichiometric ratio of 1:1. Herein, we report the spontaneous formation of highly dispersed Ni nanoclusters on HB sheets. The spontaneous re...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/27/23/8261 |
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| author | Natsumi Noguchi Shin-ichi Ito Miwa Hikichi Yohei Cho Kazuho Goto Atsushi Kubo Iwao Matsuda Takeshi Fujita Masahiro Miyauchi Takahiro Kondo |
| author_facet | Natsumi Noguchi Shin-ichi Ito Miwa Hikichi Yohei Cho Kazuho Goto Atsushi Kubo Iwao Matsuda Takeshi Fujita Masahiro Miyauchi Takahiro Kondo |
| author_sort | Natsumi Noguchi |
| collection | DOAJ |
| description | Hydrogen boride (HB) sheets are two-dimensional materials comprising a negatively charged hexagonal boron network and positively charged hydrogen atoms with a stoichiometric ratio of 1:1. Herein, we report the spontaneous formation of highly dispersed Ni nanoclusters on HB sheets. The spontaneous reduction reaction of Ni ions by the HB sheets was monitored by in-situ measurements with an ultraviolet-visible spectrometer. Acetonitrile solutions of Ni complexes and acetonitrile dispersions of the HB sheets were mixed in several molar ratios (the HB:Ni molar ratio was varied from 100:0.5 to 100:20), and the changes in the absorbance were measured over time. In all cases, the results suggest that Ni metal clusters grow on the HB sheets, considering the increase in absorbance with time. The absorbance peak position shifts to the higher wavelength as the Ni ion concentration increases. Transmission electron microscopy images of the post-reaction products indicate the formation of Ni nanoclusters, with sizes of a few nanometers, on the HB sheets, regardless of the preparation conditions. These highly dispersed Ni nanoclusters supported on HB sheets will be used for catalytic and plasmonic applications and as hydrogen storage materials. |
| first_indexed | 2024-03-09T17:39:46Z |
| format | Article |
| id | doaj.art-88c2af83f32f4b62938d4c0931f963d0 |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-09T17:39:46Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-88c2af83f32f4b62938d4c0931f963d02023-11-24T11:39:16ZengMDPI AGMolecules1420-30492022-11-012723826110.3390/molecules27238261Highly Dispersed Ni Nanoclusters Spontaneously Formed on Hydrogen Boride SheetsNatsumi Noguchi0Shin-ichi Ito1Miwa Hikichi2Yohei Cho3Kazuho Goto4Atsushi Kubo5Iwao Matsuda6Takeshi Fujita7Masahiro Miyauchi8Takahiro Kondo9Graduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8574, JapanFaculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8573, JapanFaculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8573, JapanSchool of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, JapanGraduate School of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8574, JapanFaculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8573, JapanInstitute for Solid State Physics (ISSP), The University of Tokyo, Kashiwa 277-8581, JapanSchool of Environmental Science and Engineering, Kochi University of Technology, 185 Miyanokuchi, Tosayamada, Kami 782-8502, JapanSchool of Materials and Chemical Technology, Tokyo Institute of Technology, Meguro, Tokyo 152-8552, JapanFaculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8573, JapanHydrogen boride (HB) sheets are two-dimensional materials comprising a negatively charged hexagonal boron network and positively charged hydrogen atoms with a stoichiometric ratio of 1:1. Herein, we report the spontaneous formation of highly dispersed Ni nanoclusters on HB sheets. The spontaneous reduction reaction of Ni ions by the HB sheets was monitored by in-situ measurements with an ultraviolet-visible spectrometer. Acetonitrile solutions of Ni complexes and acetonitrile dispersions of the HB sheets were mixed in several molar ratios (the HB:Ni molar ratio was varied from 100:0.5 to 100:20), and the changes in the absorbance were measured over time. In all cases, the results suggest that Ni metal clusters grow on the HB sheets, considering the increase in absorbance with time. The absorbance peak position shifts to the higher wavelength as the Ni ion concentration increases. Transmission electron microscopy images of the post-reaction products indicate the formation of Ni nanoclusters, with sizes of a few nanometers, on the HB sheets, regardless of the preparation conditions. These highly dispersed Ni nanoclusters supported on HB sheets will be used for catalytic and plasmonic applications and as hydrogen storage materials.https://www.mdpi.com/1420-3049/27/23/8261hydrogen boride (HB) sheetsNi nanoclusterstransmission electron microscopy |
| spellingShingle | Natsumi Noguchi Shin-ichi Ito Miwa Hikichi Yohei Cho Kazuho Goto Atsushi Kubo Iwao Matsuda Takeshi Fujita Masahiro Miyauchi Takahiro Kondo Highly Dispersed Ni Nanoclusters Spontaneously Formed on Hydrogen Boride Sheets Molecules hydrogen boride (HB) sheets Ni nanoclusters transmission electron microscopy |
| title | Highly Dispersed Ni Nanoclusters Spontaneously Formed on Hydrogen Boride Sheets |
| title_full | Highly Dispersed Ni Nanoclusters Spontaneously Formed on Hydrogen Boride Sheets |
| title_fullStr | Highly Dispersed Ni Nanoclusters Spontaneously Formed on Hydrogen Boride Sheets |
| title_full_unstemmed | Highly Dispersed Ni Nanoclusters Spontaneously Formed on Hydrogen Boride Sheets |
| title_short | Highly Dispersed Ni Nanoclusters Spontaneously Formed on Hydrogen Boride Sheets |
| title_sort | highly dispersed ni nanoclusters spontaneously formed on hydrogen boride sheets |
| topic | hydrogen boride (HB) sheets Ni nanoclusters transmission electron microscopy |
| url | https://www.mdpi.com/1420-3049/27/23/8261 |
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