Anh, Nguyen Hoai;
Nguyen, Duc-Viet;
Luu, Tuyen Anh;
Phan, Pham Duc Minh;
Toan, Huynh Phuoc;
Ly, Pho Phuong;
Hung, Nguyen Quang;
... Vuong, Hoai-Thanh; + view all
(2024)
Unraveling Precise Locations of Indium Atoms in g-C3N4 for Ameliorating Hydrogen Peroxide Piezo-Photogeneration.
Solar RRL
, 8
(8)
, Article 2400034. 10.1002/solr.202400034.
Preview |
Text
Isaacs_Revised-Manuscript ICN.pdf Download (1MB) | Preview |
Abstract
Increasing active sites in catalysts is of utmost importance for catalytic processes. In this regime, single-atom dispersing on graphitic carbon nitrides (g-C3N4) to produce fine chemicals, such as hydrogen peroxide (H2O2), is of current interest due to not only enhancing catalytic performance but also reducing the loading of necessary metals. Herein, g-C3N4 is engineered by atomically dispersing aluminum (Al) or indium (In) sites to provide catalytic active centers via one-step thermal shock polymerization. The addition of Al and In sites can accelerate the catalytic efficacy owing to the Lewis acid–base interactions between these metals and oxygen (O2). Under catalytic conditions, the formation of oxygenic radicals will strongly be associated with the enhanced formation of H2O2, confirmed by in situ electron paramagnetic resonance spectroscopy. Furthermore, the empirical analyses from positron annihilation spectroscopy show that In atoms will occupy the near positions of carbon vacancies (VC) to form NVC@InO bonds. This replacement will produce the highest formation energy based on the density functional theory calculations, improving the stability of atom-dispersive materials. Therefore, via the combination of experimental and theoretical proofs, this study suggests the exact location of In atoms in g-C3N4 structures, which can help boost the catalytic production of H2O2.
| Type: | Article |
|---|---|
| Title: | Unraveling Precise Locations of Indium Atoms in g-C3N4 for Ameliorating Hydrogen Peroxide Piezo-Photogeneration |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1002/solr.202400034 |
| Publisher version: | https://doi.org/10.1002/solr.202400034 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | atom dispersions, CHARGE SEPARATION, DOPED G-C3N4, Energy & Fuels, ENHANCEMENT, EVOLUTION, g-C3N4, GRAPHITIC CARBON NITRIDE, H2O2, IDENTIFICATION, intercalation structures, Materials Science, Materials Science, Multidisciplinary, mono and cluster vacancies, PHOTOCATALYST, piezo-photocatalysis, REDUCTION, Science & Technology, Technology, WATER |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10210705 |
Archive Staff Only
 |
View Item |
