Highly selective oxidation of methane to formaldehyde on tungsten trioxide by lattice oxygen
Photocatalytic oxidation of methane into formaldehyde in high yield and selectivity remains a grand challenge due to the ineluctable intermediates. Here, we report that a {001}, {010} and {100} facets modified tungsten trioxide photocatalyst enables an intermediate-free oxidation of methane into for...
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | article |
| Language: | EN |
| Published: |
Elsevier
2021
|
| Subjects: | |
| Online Access: | https://doaj.org/article/9de68f7caadb4a22bdb1163613a2e4e7 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Photocatalytic oxidation of methane into formaldehyde in high yield and selectivity remains a grand challenge due to the ineluctable intermediates. Here, we report that a {001}, {010} and {100} facets modified tungsten trioxide photocatalyst enables an intermediate-free oxidation of methane into formaldehyde with 99.4% selectivity. A durable formaldehyde yield of 4.61 mmol g−1 can be achieved after irradiation for 30 h. Mechanism studies disclose that surface defect and reactive lattice oxygen atom are crucial for the selectivity and productivity promotion. This work provides a valid paradigm for efficient conversion of methane to formaldehyde. |
|---|