Dr. Atsuhiro Tanaka, Kohki Okabayashi, Ryosuke Yagi, Prof. Dr. Hiroshi Kominami
{"title":"制备稳定的 Cr2O3/Cu/TiO2 等离子体光催化剂，用于在可见光照射下（λ>600 纳米）选择性氧化酒精","authors":"Dr. Atsuhiro Tanaka, Kohki Okabayashi, Ryosuke Yagi, Prof. Dr. Hiroshi Kominami","doi":"10.1002/ceur.202400008","DOIUrl":null,"url":null,"abstract":"<p>Copper (Cu) nanoparticles (NPs) loaded on titanium(IV) oxide (TiO<sub>2</sub>) exhibit an extinction at about λ=580 nm because of surface plasmon resonance (SPR); however, they rapidly lose their its SPR when exposed to air. In order to stabilize the Cu NPs, a multi-step photodeposition method was used to introduce chromium, which resulted in successful synthesis of a Cr<sub>2</sub>O<sub>3</sub>/Cu/TiO<sub>2</sub> sample that exhibited extinction even when exposed to air. Transmission electron microscopy, scanning transmission electron microscopy, X-ray photoelectron spectroscopy and UV-vis spectroscopy were utilized to analyze the Cu/TiO<sub>2</sub> and Cr<sub>2</sub>O<sub>3</sub>/Cu/TiO<sub>2</sub> samples with a focus on SPR of the nanoparticles and state of the Cu species. The prepared Cr<sub>2</sub>O<sub>3</sub>/Cu/TiO<sub>2</sub> samples acted as plasmonic photocatalysts in oxidation of 2-propanol under aerated conditions and visible light irradiation. Expandability of the Cr<sub>2</sub>O<sub>3</sub>/Cu/TiO<sub>2</sub> plasmonic photocatalyst was also investigated, and the results suggested the potential of a Cu-based plasmonic photocatalyst working under irradiation of visible light.</p>","PeriodicalId":100234,"journal":{"name":"ChemistryEurope","volume":"2 3-4","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ceur.202400008","citationCount":"0","resultStr":"{\"title\":\"Preparation of a Stable Cr2O3/Cu/TiO2 Plasmonic Photocatalyst for Selective Alcohol Oxidation under Visible Light Irradiation (λ>600 nm)\",\"authors\":\"Dr. Atsuhiro Tanaka, Kohki Okabayashi, Ryosuke Yagi, Prof. Dr. Hiroshi Kominami\",\"doi\":\"10.1002/ceur.202400008\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Copper (Cu) nanoparticles (NPs) loaded on titanium(IV) oxide (TiO<sub>2</sub>) exhibit an extinction at about λ=580 nm because of surface plasmon resonance (SPR); however, they rapidly lose their its SPR when exposed to air. In order to stabilize the Cu NPs, a multi-step photodeposition method was used to introduce chromium, which resulted in successful synthesis of a Cr<sub>2</sub>O<sub>3</sub>/Cu/TiO<sub>2</sub> sample that exhibited extinction even when exposed to air. Transmission electron microscopy, scanning transmission electron microscopy, X-ray photoelectron spectroscopy and UV-vis spectroscopy were utilized to analyze the Cu/TiO<sub>2</sub> and Cr<sub>2</sub>O<sub>3</sub>/Cu/TiO<sub>2</sub> samples with a focus on SPR of the nanoparticles and state of the Cu species. The prepared Cr<sub>2</sub>O<sub>3</sub>/Cu/TiO<sub>2</sub> samples acted as plasmonic photocatalysts in oxidation of 2-propanol under aerated conditions and visible light irradiation. Expandability of the Cr<sub>2</sub>O<sub>3</sub>/Cu/TiO<sub>2</sub> plasmonic photocatalyst was also investigated, and the results suggested the potential of a Cu-based plasmonic photocatalyst working under irradiation of visible light.</p>\",\"PeriodicalId\":100234,\"journal\":{\"name\":\"ChemistryEurope\",\"volume\":\"2 3-4\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-03-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ceur.202400008\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ChemistryEurope\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/ceur.202400008\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ChemistryEurope","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ceur.202400008","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Preparation of a Stable Cr2O3/Cu/TiO2 Plasmonic Photocatalyst for Selective Alcohol Oxidation under Visible Light Irradiation (λ>600 nm)
Copper (Cu) nanoparticles (NPs) loaded on titanium(IV) oxide (TiO2) exhibit an extinction at about λ=580 nm because of surface plasmon resonance (SPR); however, they rapidly lose their its SPR when exposed to air. In order to stabilize the Cu NPs, a multi-step photodeposition method was used to introduce chromium, which resulted in successful synthesis of a Cr2O3/Cu/TiO2 sample that exhibited extinction even when exposed to air. Transmission electron microscopy, scanning transmission electron microscopy, X-ray photoelectron spectroscopy and UV-vis spectroscopy were utilized to analyze the Cu/TiO2 and Cr2O3/Cu/TiO2 samples with a focus on SPR of the nanoparticles and state of the Cu species. The prepared Cr2O3/Cu/TiO2 samples acted as plasmonic photocatalysts in oxidation of 2-propanol under aerated conditions and visible light irradiation. Expandability of the Cr2O3/Cu/TiO2 plasmonic photocatalyst was also investigated, and the results suggested the potential of a Cu-based plasmonic photocatalyst working under irradiation of visible light.
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