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Ordered mesoporous WO3/ZnO nanocomposites with isotype heterojunctions for sensitive detection of NO2
Sun, Jianhua1,3; Sun, Lixia1; Han, Ning2; Pan, Junli3,4; Liu, Weiqiao4; Bai, Shouli3; Feng, Yongjun3; Luo, Ruixian3; Li, Dianqing3; Chen, Aifan3
2019-04-15
Source PublicationSENSORS AND ACTUATORS B-CHEMICAL
ISSN0925-4005
Volume285Pages:68-75
AbstractOrdered mesoporous WO3 nanocrystals have been successfully synthesized by a hydrothermal method using mesoporous silica of KIT-6 as a template and phosphotungstic acid as a precursor of WO3. The structure, morphology, and specific surface of WO3 nanocrystals were systematically characterized by XRD, SAXS, HR-TEM, and BET. To improve the sensing properties of WO3 to NO2, a series of different ZnO amounts were loaded on the mesoporous WO3 to construct nanocomposites with n-n heterojunction for the fabrication of NO2 sensors. The gas-sensing behaviors show that the sensor based on WO3/5 wt% ZnO composite to 1 ppm of NO2 not only exhibits the high response, but also has good selectivity and stability at operating temperature of 150 degrees C, which can be contributed to the large specific surface and porous channels provided by mesoporous structures, and the formation of n-n heterojunctions at interface between both oxides.
KeywordMesoporous WO3 ZnO n-n isotype heterojunction NO2 sensor
DOI10.1016/j.snb.2018.12.089
Language英语
WOS KeywordGAS-SENSING PROPERTIES ; WO3 ; SENSOR ; PERFORMANCE ; SILICA ; OXIDE ; NANOSTRUCTURES ; FABRICATION ; NANOWIRES ; MECHANISM
Funding ProjectFoundation of Guangxi Department of Education[2017KY0025] ; Project of Guangxi Natural Science Foundation[2017GXNSFAA198289] ; National Key R&D Program of China[2016YFC0207100] ; National Natural Science Foundation of China[51772015]
WOS Research AreaChemistry ; Electrochemistry ; Instruments & Instrumentation
WOS SubjectChemistry, Analytical ; Electrochemistry ; Instruments & Instrumentation
Funding OrganizationFoundation of Guangxi Department of Education ; Project of Guangxi Natural Science Foundation ; National Key R&D Program of China ; National Natural Science Foundation of China
WOS IDWOS:000458798000010
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/28049
Collection中国科学院过程工程研究所
Corresponding AuthorSun, Lixia; Han, Ning; Bai, Shouli
Affiliation1.Guangxi Univ, Sch Chem & Chem Engn, Guangxi Key Lab Petrochem Resource Proc & Proc In, Nanning 530004, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
3.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing Key Lab Environm Harmful Chem Anal, Beijing 100029, Peoples R China
4.Jiangsu Univ Technol, Sch Chem & Environm Engn, Changzhou 213001, Peoples R China
Recommended Citation
GB/T 7714
Sun, Jianhua,Sun, Lixia,Han, Ning,et al. Ordered mesoporous WO3/ZnO nanocomposites with isotype heterojunctions for sensitive detection of NO2[J]. SENSORS AND ACTUATORS B-CHEMICAL,2019,285:68-75.
APA Sun, Jianhua.,Sun, Lixia.,Han, Ning.,Pan, Junli.,Liu, Weiqiao.,...&Chen, Aifan.(2019).Ordered mesoporous WO3/ZnO nanocomposites with isotype heterojunctions for sensitive detection of NO2.SENSORS AND ACTUATORS B-CHEMICAL,285,68-75.
MLA Sun, Jianhua,et al."Ordered mesoporous WO3/ZnO nanocomposites with isotype heterojunctions for sensitive detection of NO2".SENSORS AND ACTUATORS B-CHEMICAL 285(2019):68-75.
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