Accelerating Surface Lattice Oxygen Activation of Pt/TiO2-x by Modulating the Interface Electron Interaction for Efficient Photocatalytic Toluene Oxidation

被引：20

作者：

Mao, Haifang ^{[1
]}

Xu, Mengli ^{[1
]}

Li, Shuangjun ^{[2
]}

Ren, Yuqing ^{[2
]}

Zhao, Yun ^{[1
]}

Yu, Jun ^{[1
]}

Zhang, Qizhong ^{[4
]}

Zhao, Wenshu ^{[5
]}

Zhang, Gui ^{[4
]}

Yan, Lan ^{[3
]}

Xu, Zhenmin ^{[1
]}

Bian, Zhenfeng ^{[2
]}

机构：

[1] Shanghai Inst Technol, Sch Chem & Environm Engn, Shanghai 201418, Peoples R China

[2] Shanghai Normal Univ, Key Lab Resource Chem, Minist Educ, Shanghai Key Lab Rare Earth Funct Mat, Shanghai 200234, Peoples R China

[3] Naval Med Univ, Sch Pharm, Shanghai 200433, Peoples R China

[4] Anhui Haihua Chem Technol Co Ltd, Bengbu 231604, Anhui, Peoples R China

[5] Shanghai Univ Tradit Chinese Med, Longhua Hosp, Shanghai 200032, Peoples R China

来源：

ACS ES&T ENGINEERING | 2023年 / 3卷 / 11期

基金：

中国国家自然科学基金;

关键词：

photocatalysis; toluene oxidation; Pt-Tiinterface; surface lattice oxygen activation; oxygenvacancies; TIO2; NANOTUBES; DEGRADATION;

D O I：

10.1021/acsestengg.3c00251

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The activation of surface lattice oxygen is crucial for designing highly efficient photocatalysts for volatile organic compound (VOC) purification. Herein, the Pt/TiO2-x catalyst with abundant oxygen vacancies was successfully prepared via the pyrolysis of the Pt-modified Ti metal-organic framework (MOF) under an air atmosphere. Detailed experimental results and density functional theory calculations revealed that the introduction of oxygen vacancies modulated the electronic configuration of the Pt site and enhanced the charge transfer from Ti to Pt, which created an electronic metal-support Pt-Ti interaction interface (EMSI). The established Pt-Ti interface is favorable for the activation of the surface lattice oxygen adjacent to the Pt site [identified by H2 temperature-programmed reduction (TPR), electron paramagnetic resonance (EPR), and in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS)] and subsequently facilitates toluene oxidation via a direct ring opening process. This study offers a promising strategy for the design of high-performance photocatalysts for VOC oxidation.

引用

页码：1851 / 1863

页数：13

共 52 条

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