Unknown

Dataset Information

0

Activating low-temperature diesel oxidation by single-atom Pt on TiO2 nanowire array.

ABSTRACT: Supported metal single atom catalysts (SACs) present an emerging class of low-temperature catalysts with high reactivity and selectivity, which, however, face challenges on both durability and practicality. Herein, we report a single-atom Pt catalyst that is strongly anchored on a robust nanowire forest of mesoporous rutile titania grown on the channeled walls of full-size cordierite honeycombs. This Pt SAC exhibits remarkable activity for oxidation of CO and hydrocarbons with 90% conversion at temperatures as low as ~160 oC under simulated diesel exhaust conditions while using 5 times less Pt-group metals than a commercial oxidation catalyst. Such an excellent low-temperature performance is sustained over hydrothermal aging and sulfation as a result of highly dispersed and isolated active single Pt ions bonded at the Ti vacancy sites with 5 or 6 oxygen ions on titania nanowire surfaces.

SUBMITTER: Hoang S 

PROVIDER: S-EPMC7044320 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature

Json Xml
altmetric image

Publications

Supported metal single atom catalysts (SACs) present an emerging class of low-temperature catalysts with high reactivity and selectivity, which, however, face challenges on both durability and practicality. Herein, we report a single-atom Pt catalyst that is strongly anchored on a robust nanowire forest of mesoporous rutile titania grown on the channeled walls of full-size cordierite honeycombs. This Pt SAC exhibits remarkable activity for oxidation of CO and hydrocarbons with 90% conversion at  ...[more]

Similar Datasets

Unknown The TiO<sub>2</sub> topotactic transformation assisted trapping of an atomically dispersed Pt catalyst for low temperature CO oxidation.
| S-EPMC9064404 | biostudies-literature
Unknown One-Step Hydrothermal/Solvothermal Preparation of Pt/TiO<sub>2</sub>: An Efficient Catalyst for Biobutanol Oxidation at Room Temperature.
| S-EPMC11013154 | biostudies-literature
Unknown Distribution of Pt single atom coordination environments on anatase TiO<sub>2</sub> supports controls reactivity.
| S-EPMC10837418 | biostudies-literature
Unknown Distinct Role of Surface Hydroxyls in Single-Atom Pt<sub>1</sub>/CeO<sub>2</sub> Catalyst for Room-Temperature Formaldehyde Oxidation: Acid-Base Versus Redox.
| S-EPMC9327081 | biostudies-literature
Unknown Promotion of TiO<sub>2</sub> Nanotube-Confined Pt Nanoparticles via Surface Modification with Fe<sub>2</sub>O<sub>3</sub> for Ethylene Oxidation at Low Temperature.
| S-EPMC8153978 | biostudies-literature
Unknown CeO<sub>2</sub>-Supported TiO<sub>2</sub>-Pt Nanorod Composites as Efficient Catalysts for CO Oxidation.
| S-EPMC9959209 | biostudies-literature
Unknown Enhanced Photoinduced Electrocatalytic Oxidation of Methanol Using Pt Nanoparticle-Decorated TiO<sub>2</sub>-Polyaniline Ternary Nanofibers.
| S-EPMC6643921 | biostudies-literature
Unknown A TiO<sub>2</sub>/C catalyst having biomimetic channels and extremely low Pt loading for formaldehyde oxidation.
| S-EPMC9060426 | biostudies-literature
Unknown Enhanced Formaldehyde Oxidation Performance of the Mesoporous TiO<sub>2</sub>(B)-Supported Pt Catalyst: The Role of Hydroxyls.
| S-EPMC9330097 | biostudies-literature
Unknown Mesoporous Pt@Pt-skin Pt<sub>3</sub>Ni core-shell framework nanowire electrocatalyst for efficient oxygen reduction.
| S-EPMC10024750 | biostudies-literature