TY - JOUR
T1 - Interfacial dependent reactive oxygen species generation over Pt-ZrO2 nanoparticles for catalytic oxidation of formaldehyde at room temperature
AU - Peng, Shiqi
AU - Li, Rong
AU - Huang, Yu
AU - Zhang, Yufei
AU - Cao, Jun ji
AU - Lee, Shuncheng
N1 - Funding Information:
This work was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences, China (grant Nos. XDA23010300 and XDA23010000), National Science Foundation of China , China (grant Nos. 51878644 , 41573138 and 51708537 ) and the Plan for “National Youth Talents” of the Organization Department of the Central Committee.
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/10/30
Y1 - 2022/10/30
N2 - Producing the strong metal-support interaction (SMSI) interface and highly reactive oxygen species is a great challenge for catalytic oxidation of formaldehyde (HCHO) at room temperature over supported metal catalysts. Herein, we report a conceptual oxygen vacancy (VO) associated SMSI interface of Pt-ZrO2 nanoparticles for HCHO catalysis at room temperature, exhibiting interfacial dependent reactive oxygen species (O*) formation. The VO on the ZrO2 support captures and activates the molecular O2, then proceeds to generating the reactive oxygen atom (O*) with a lower activation barrier of 0.3 eV. The generated O* tends to link the (1 1 0) surface of ZrO2 and the (1 1 1) surface of Pt as an electronic transmission channel for the selective catalytic oxidation of HCHO adsorbed on the (1 1 0) surface of ZrO2, accelerating the direct generation of formate species and mineralization of HCHO. The Pt-VO-ZrO2 achieves high HCHO removal and HCHO conversion (>95%) at 20 °C. These findings will consolidate the fundamental theories of room temperature catalytic reactions via constructing the SMSI interface engineering for wide environmental applications.
AB - Producing the strong metal-support interaction (SMSI) interface and highly reactive oxygen species is a great challenge for catalytic oxidation of formaldehyde (HCHO) at room temperature over supported metal catalysts. Herein, we report a conceptual oxygen vacancy (VO) associated SMSI interface of Pt-ZrO2 nanoparticles for HCHO catalysis at room temperature, exhibiting interfacial dependent reactive oxygen species (O*) formation. The VO on the ZrO2 support captures and activates the molecular O2, then proceeds to generating the reactive oxygen atom (O*) with a lower activation barrier of 0.3 eV. The generated O* tends to link the (1 1 0) surface of ZrO2 and the (1 1 1) surface of Pt as an electronic transmission channel for the selective catalytic oxidation of HCHO adsorbed on the (1 1 0) surface of ZrO2, accelerating the direct generation of formate species and mineralization of HCHO. The Pt-VO-ZrO2 achieves high HCHO removal and HCHO conversion (>95%) at 20 °C. These findings will consolidate the fundamental theories of room temperature catalytic reactions via constructing the SMSI interface engineering for wide environmental applications.
KW - Catalytic oxidation of formaldehyde
KW - Oxygen vacancy
KW - Pt-ZrO nanoparticles
KW - Reactive oxygen species
KW - Strong metal-support interaction interface
UR - http://www.scopus.com/inward/record.url?scp=85133645040&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2022.154056
DO - 10.1016/j.apsusc.2022.154056
M3 - Journal article
AN - SCOPUS:85133645040
SN - 0169-4332
VL - 600
JO - Applied Surface Science
JF - Applied Surface Science
M1 - 154056
ER -