Microwave-assisted synthesis of porous and hollow alpha-Fe2O3/LaFeO3 nanostructures for acetone gas sensing as well as photocatalytic degradation of methylene blue

Zhang, Dongming1; Chen, Mingpeng1; Zou, Haiyuan2,3,4; Zhang, Yumin1; Hu, Jicu1; Wang, Huapeng1; Zi, Baoye1; Zhang, Jin1; Zhu, Zhongqi1; Duan, Lele3,4; Liu, Qingju1

2020-05-22

10.1088/1361-6528/ab73b5

NANOTECHNOLOGY   影响因子和分区

0957-4484

1361-6528

To address the urgent issues of hazardous gas detection and the prevention of environmental pollution, various functional materials for gas sensing and catalytic reduction have been studied. Specifically, the p-type perovskite LaFeO3 has been studied widely because of its promising physicochemical properties. However, there remains several problems to develop a controllable synthesis of LaFeO3-based p-n heterojunctions. In this work, alpha-Fe2O3 was further compounded with LaFeO3 to form a porous and hollow alpha-Fe2O3/LaFeO3 heterojunction to improve its gas-sensing performance and photocatalytic efficiency via a microwave-assisted hydrothermal method. While evaluated as sensors of acetone gas, the optimized sample exhibits excellent performance, including a high response (48.3), excellent selectivity, good reversibility, fast response, and recovery ability. Furthermore, it is an efficient catalyst for the degradation of methylene blue. This can be attributed to the enhancement effect of its larger specific surface area, fast diffusion, enhanced surface activities, and p-n heterojunction. Additionally, this work provides a rapid and rational synthesis strategy to produce metal oxides with both enhanced gas-sensing performance and improved photocatalytic properties.

alpha-Fe2O3/LaFeO3 nanostructure microwave-assisted gas sensor photocatalysis

SCI ; EI

英语

其他

Yunnan Basic Applied Research Project[2017FB086]

Science & Technology - Other Topics ; Materials Science ; Physics

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:000521175400001

IOP PUBLISHING LTD

20201508388007

Heterojunctions ; Acetone ; Aromatic compounds ; Functional materials ; Nanostructures ; Physicochemical properties ; Gases ; Perovskite ; Chemical detection ; Chemical sensors ; Microwave sensors ; Photocatalytic activity ; Gas detectors

Minerals:482.2 ; Semiconductor Devices and Integrated Circuits:714.2 ; Control Instrumentation:732.2 ; Nanotechnology:761 ; Chemistry:801 ; Physical Chemistry:801.4 ; Organic Compounds:804.1 ; Accidents and Accident Prevention:914.1 ; Solid State Physics:933 ; Special Purpose Instruments:943.3 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Yunnan Univ, Sch Mat Sci & Engn, Yunnan Key Lab Micro Nano Mat & Technol, Kunming 650091, Yunnan, Peoples R China
2.Harbin Inst Technol, Sch Chem & Chem Engn, 92 West Da Zhi St, Harbin 150001, Peoples R China
3.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China
4.Southern Univ Sci & Technol, Shenzhen Grubbs Inst, Shenzhen 518055, Peoples R China

Zhang, Dongming,Chen, Mingpeng,Zou, Haiyuan,et al. Microwave-assisted synthesis of porous and hollow alpha-Fe2O3/LaFeO3 nanostructures for acetone gas sensing as well as photocatalytic degradation of methylene blue[J]. NANOTECHNOLOGY,2020,31(21).

Zhang, Dongming.,Chen, Mingpeng.,Zou, Haiyuan.,Zhang, Yumin.,Hu, Jicu.,...&Liu, Qingju.(2020).Microwave-assisted synthesis of porous and hollow alpha-Fe2O3/LaFeO3 nanostructures for acetone gas sensing as well as photocatalytic degradation of methylene blue.NANOTECHNOLOGY,31(21).

Zhang, Dongming,et al."Microwave-assisted synthesis of porous and hollow alpha-Fe2O3/LaFeO3 nanostructures for acetone gas sensing as well as photocatalytic degradation of methylene blue".NANOTECHNOLOGY 31.21(2020).