Carbon Quantum Dots Modified (002) Oriented Bi2O2CO3 Composites with Enhanced Photocatalytic Removal of Toluene in Air

被引：19

作者：

Ding, Junping ^{[1
,2
]}

Wang, Huanchun ^{[3
]}

Luo, Yidong ^{[1
]}

Xu, Yushuai ^{[1
]}

Liu, Jinsheng ^{[2
]}

Lin, Ruichu ^{[2
]}

Gao, Yuchen ^{[2
]}

Lin, Yuanhua ^{[1
]}

机构：

[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[2] China Astronaut Res & Training Ctr, Beijing 100094, Peoples R China

[3] High Tech Inst Xian, Xian 710025, Peoples R China

来源：

NANOMATERIALS | 2020年 / 10卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Bi2O2CO3; carbon quantum dots (CQDs); crystal orientation; toluene removal; photocatalysis; INDOOR AIR; HIGHLY EFFICIENT; NANOSHEETS; DEGRADATION; PERFORMANCE; OXIDATION; FACETS; TIO2;

D O I：

10.3390/nano10091795

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In work, (002) oriented flower-like Bi2O2CO3(BOC) composites are synthesized by a facile chemical route and carbon quantum dots (CQDs) are modified on their surfaces through a hydrothermal method. The synthesized samples (CQD/BOC) are characterized by X-ray diffraction (XRD), SEM, X-ray photoelectron spectroscopy (XPS), UV-Vis diffuser reflectances (DRS), BET and TEM/HRTEM. The morphologies of CQD/BOC composites are the flower-like shapes, the irregular flaky structures and the fine spherical particles of CQDs attached. Photocatalytic performances were investigated in terms of removing gaseous toluene at a concentration of 94.3ppm in air, with the assistance of CQD/BOC under artificial irradiation. Our results show that CQDs modified (002) oriented Bi2O2CO3 exhibits good photocatalytic activity for toluene decomposition, which can be attributed to the enhanced efficient charge separation. A certain ratio composite photocatalyst (BOC-CQD-15) shows a toluene removal rate of 96.62% in three hours, as well as great stability. CO2 was verified to be the primary product. The oriented flower-like Bi2O2CO3 with carbon quantum dots on the surface shows great potential in the field of solar driven air purification.

引用

页码：1 / 12

页数：12

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