As a single atom Pd outperforms Pt as the most active co-catalyst for photocatalytic H2 evolution
Summary: Here, we evaluate three different noble metal co-catalysts (Pd, Pt, and Au) that are present as single atoms (SAs) on the classic benchmark photocatalyst, TiO2. To trap the single atoms on the surface, we introduced controlled surface vacancies (Ti3+-Ov) on anatase TiO2 nanosheets by a ther...
| Main Authors: | , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-08-01
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| Series: | iScience |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589004221009068 |
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doaj-f9adef5614e147fda28efe799a0f438f |
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Article |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
Gihoon Cha Imgon Hwang Seyedsina Hejazi Ana S. Dobrota Igor A. Pašti Benedict Osuagwu Hyesung Kim Johannes Will Tadahiro Yokosawa Zdeněk Badura Štěpán Kment Shiva Mohajernia Anca Mazare Natalia V. Skorodumova Erdmann Spiecker Patrik Schmuki |
| spellingShingle |
Gihoon Cha Imgon Hwang Seyedsina Hejazi Ana S. Dobrota Igor A. Pašti Benedict Osuagwu Hyesung Kim Johannes Will Tadahiro Yokosawa Zdeněk Badura Štěpán Kment Shiva Mohajernia Anca Mazare Natalia V. Skorodumova Erdmann Spiecker Patrik Schmuki As a single atom Pd outperforms Pt as the most active co-catalyst for photocatalytic H2 evolution iScience Catalysis Nanomaterials Materials characterization |
| author_facet |
Gihoon Cha Imgon Hwang Seyedsina Hejazi Ana S. Dobrota Igor A. Pašti Benedict Osuagwu Hyesung Kim Johannes Will Tadahiro Yokosawa Zdeněk Badura Štěpán Kment Shiva Mohajernia Anca Mazare Natalia V. Skorodumova Erdmann Spiecker Patrik Schmuki |
| author_sort |
Gihoon Cha |
| title |
As a single atom Pd outperforms Pt as the most active co-catalyst for photocatalytic H2 evolution |
| title_short |
As a single atom Pd outperforms Pt as the most active co-catalyst for photocatalytic H2 evolution |
| title_full |
As a single atom Pd outperforms Pt as the most active co-catalyst for photocatalytic H2 evolution |
| title_fullStr |
As a single atom Pd outperforms Pt as the most active co-catalyst for photocatalytic H2 evolution |
| title_full_unstemmed |
As a single atom Pd outperforms Pt as the most active co-catalyst for photocatalytic H2 evolution |
| title_sort |
as a single atom pd outperforms pt as the most active co-catalyst for photocatalytic h2 evolution |
| publisher |
Elsevier |
| series |
iScience |
| issn |
2589-0042 |
| publishDate |
2021-08-01 |
| description |
Summary: Here, we evaluate three different noble metal co-catalysts (Pd, Pt, and Au) that are present as single atoms (SAs) on the classic benchmark photocatalyst, TiO2. To trap the single atoms on the surface, we introduced controlled surface vacancies (Ti3+-Ov) on anatase TiO2 nanosheets by a thermal reduction treatment. After anchoring identical loadings of single atoms of Pd, Pt, and Au, we measure the photocatalytic H2 generation rate and compare it to the classic nanoparticle co-catalysts on the nanosheets. While nanoparticles yield the well-established the hydrogen evolution reaction activity sequence (Pt > Pd > Au), for the single atom form, Pd radically outperforms Pt and Au. Based on density functional theory (DFT), we ascribe this unusual photocatalytic co-catalyst sequence to the nature of the charge localization on the noble metal SAs embedded in the TiO2 surface. |
| topic |
Catalysis Nanomaterials Materials characterization |
| url |
http://www.sciencedirect.com/science/article/pii/S2589004221009068 |
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doaj-f9adef5614e147fda28efe799a0f438f2021-08-22T04:30:55ZengElsevieriScience2589-00422021-08-01248102938As a single atom Pd outperforms Pt as the most active co-catalyst for photocatalytic H2 evolutionGihoon Cha0Imgon Hwang1Seyedsina Hejazi2Ana S. Dobrota3Igor A. Pašti4Benedict Osuagwu5Hyesung Kim6Johannes Will7Tadahiro Yokosawa8Zdeněk Badura9Štěpán Kment10Shiva Mohajernia11Anca Mazare12Natalia V. Skorodumova13Erdmann Spiecker14Patrik Schmuki15Institute for Surface Science and Corrosion WW4-LKO, Department of Materials Science, University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, GermanyInstitute for Surface Science and Corrosion WW4-LKO, Department of Materials Science, University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, GermanyInstitute for Surface Science and Corrosion WW4-LKO, Department of Materials Science, University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, GermanyFaculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade, 11000 SerbiaFaculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, Belgrade, 11000 Serbia; Department of Materials Science and Engineering, School of Industrial Engineering and Management, KTH-Royal Institute of Technology, Brinellvägen 23, 100 44 Stockholm, SwedenInstitute for Surface Science and Corrosion WW4-LKO, Department of Materials Science, University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, GermanyInstitute for Surface Science and Corrosion WW4-LKO, Department of Materials Science, University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, GermanyInstitute of Micro- and Nanostructure Research & Center for Nanoanalysis and Electron Microscopy (CENEM), University of Erlangen-Nuremberg, IZNF, Cauerstraße 3, 91058 Erlangen, GermanyInstitute of Micro- and Nanostructure Research & Center for Nanoanalysis and Electron Microscopy (CENEM), University of Erlangen-Nuremberg, IZNF, Cauerstraße 3, 91058 Erlangen, GermanyRegional Centre of Advanced Technologies and Materials, Šlechtitelů 27, Olomouc, 78371 Czech RepublicRegional Centre of Advanced Technologies and Materials, Šlechtitelů 27, Olomouc, 78371 Czech RepublicInstitute for Surface Science and Corrosion WW4-LKO, Department of Materials Science, University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, GermanyInstitute for Surface Science and Corrosion WW4-LKO, Department of Materials Science, University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, GermanyDepartment of Materials Science and Engineering, School of Industrial Engineering and Management, KTH-Royal Institute of Technology, Brinellvägen 23, 100 44 Stockholm, Sweden; Department of Physics and Astronomy, Uppsala University, Box 516, 751 20 Uppsala, SwedenInstitute of Micro- and Nanostructure Research & Center for Nanoanalysis and Electron Microscopy (CENEM), University of Erlangen-Nuremberg, IZNF, Cauerstraße 3, 91058 Erlangen, GermanyInstitute for Surface Science and Corrosion WW4-LKO, Department of Materials Science, University of Erlangen-Nuremberg, Martensstraße 7, 91058 Erlangen, Germany; Regional Centre of Advanced Technologies and Materials, Šlechtitelů 27, Olomouc, 78371 Czech Republic; Department of Chemistry, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21569 Saudi Arabia; Corresponding authorSummary: Here, we evaluate three different noble metal co-catalysts (Pd, Pt, and Au) that are present as single atoms (SAs) on the classic benchmark photocatalyst, TiO2. To trap the single atoms on the surface, we introduced controlled surface vacancies (Ti3+-Ov) on anatase TiO2 nanosheets by a thermal reduction treatment. After anchoring identical loadings of single atoms of Pd, Pt, and Au, we measure the photocatalytic H2 generation rate and compare it to the classic nanoparticle co-catalysts on the nanosheets. While nanoparticles yield the well-established the hydrogen evolution reaction activity sequence (Pt > Pd > Au), for the single atom form, Pd radically outperforms Pt and Au. Based on density functional theory (DFT), we ascribe this unusual photocatalytic co-catalyst sequence to the nature of the charge localization on the noble metal SAs embedded in the TiO2 surface.http://www.sciencedirect.com/science/article/pii/S2589004221009068CatalysisNanomaterialsMaterials characterization |