Efficient Photo-Assisted Thermal Selective Oxidation of Toluene Using N-Doped TiO2

被引：7

作者：

Chen, Cheng ^{[1
,2
]}

Wu, Mingge ^{[3
]}

Ma, Chunyan ^{[4
]}

Song, Maoyong ^{[2
,4
,5
]}

Jiang, Guibin ^{[2
,5
]}

机构：

[1] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Nanotechnol & Hlth Effects, Beijing 100085, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Chinese Acad Sci, Inst Chem, CAS Res Educ Ctr Excellence Mol Sci, Key Lab Photochem, Beijing 100190, Peoples R China

[4] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Nanotechnol & Hlth Effects, Beijing 100085, Peoples R China

[5] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China

来源：

ACS OMEGA | 2023年 / 8卷 / 23期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

LIQUID-PHASE OXIDATION; SOLVENT-FREE OXIDATION; C-H BONDS; MOLECULAR-OXYGEN; NANOPARTICLES; BENZALDEHYDE; VACANCIES; O-2;

D O I：

10.1021/acsomega.3c01887

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Selective oxidation of toluene is a key reaction to producehighvalue-added products but remains a big challenge. In this study, weintroduce a nitrogen-doped TiO2 (N-TiO2) catalystto create more Ti3+ and oxygen vacancy (O-V),which act as active sites for selective oxidation of toluene via activatingO(2) to superoxide radical (center dot O-2 (-)). Interestingly, the resulting N-TiO2-2 exhibited anoutstanding photo-assisted thermal performance with a product yieldof 209.6 mmol center dot g(cat) (-1) and a tolueneconversion of 10960.0 mu mol center dot g(cat) (-1)center dot h(-1), which are 1.6 and 1.8 times greaterthan those obtained under thermal catalysis. We showed that the enhancedperformance under photo-assisted thermal catalysis was attributedto more active species generation by making full use of photogeneratedcarriers. Our work suggests a viewpoint to apply a noble-metal-freeTiO(2) system in the selective oxidation of toluene undersolvent-free conditions.

引用

页码：21026 / 21031

页数：6

共 46 条

[31] Studies on morphological and optoelectronic properties of MEH-CN-PPV:TiO2 nanocomposites [J].