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| Synthesis of novel BiVO4/Cu2O heterojunctions for improving BiVO4 towards NO2 sensing properties | |
| Bai, Shouli1; Li, Qiangqiang1; Han, Ning2; Zhang, Kewei3; Tang, Pinggui1; Feng, Yongjun1; Luo, Ruixian1; Li, Dianqing1; Chen, Aifan1 | |
| 2020-05-01 | |
| Source Publication | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| ISSN | 0021-9797 |
| Volume | 567Pages:37-44 |
| Abstract | To develop a high sensitive and low temperature NO2 gas sensor, the novel BiVO4/Cu2O heterojunctions were synthesized by a modified metal organic decomposition method to decorate BiVO4 nanoplates using Cu2O nanoparticles for enhancement of BiVO4 sensing performance to NO2. The structure and morphology of BiVO4, Cu2O and BiVO4/Cu2O composites were characterized by XRD, SEM and TEM spectra. The results indicate that the BiVO4/Cu2O heterojunctions are composed of monoclinic BiVO4 nanoplates with the thickness about 1.0-1.2 mu m and 30-40 nm diameters of cubic Cu2O nanoparticles. The gas-sensing tests display that the composite exhibits rapid and linear responses to low concentration NO2 (from 100 ppb to 8.0 ppm), the highest response reaches 4.2 towards 4 ppm NO2 at 60 degrees C and relative humidity of 28.3%, which is more than 2 times of pure BiVO4 at the same condition. The enhanced sensing properties benefit from the novel p-n heterojunction between BiVO4 and Cu2O, which forms a depletion layer at the interface, leading to resistance increase of composites in NO2. The work demonstrates the as-synthesized BiVO4/Cu2O is a promising sensing material to detect NO2 gas. (C) 2020 Elsevier Inc. All rights reserved. |
| Keyword | BiVO4 Cu2O P-n heterojunction Metal decomposition method |
| DOI | 10.1016/j.jcis.2020.01.104 |
| Language | 英语 |
| WOS Keyword | ROOM-TEMPERATURE ; OXIDE COMPOSITE ; WATER ; CU2O ; HETEROSTRUCTURES ; NANOPARTICLES ; PERFORMANCE ; NANOSHEETS ; OXIDATION |
| Funding Project | National Key R&D Program of China[2016YFB0301600] ; National Key R&D Program of China[2016YFCO207100] ; National Natural Science Foundation of China[21627813] ; National Natural Science Foundation of China[51772015] ; National Natural Science Foundation of China[51973099] ; Taishan Scholar Program of Shandong Province[tsqn201812055] |
| WOS Research Area | Chemistry |
| WOS Subject | Chemistry, Physical |
| Funding Organization | National Key R&D Program of China ; National Natural Science Foundation of China ; Taishan Scholar Program of Shandong Province |
| WOS ID | WOS:000522141900005 |
| Publisher | ACADEMIC PRESS INC ELSEVIER SCIENCE |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/39929 |
| Collection | 中国科学院过程工程研究所 |
| Corresponding Author | Han, Ning; Zhang, Kewei; Li, Dianqing |
| Affiliation | 1.Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing Key Lab Environmentally Harmful Chem Anal, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 3.Qingdao Univ, State Key Lab Biofibers & Ecotext, Collaborat Innovat Ctr Shandong Marine Biobased F, Coll Mat Sci & Engn,Inst Marine Biobased Mat, Qingdao 266071, Peoples R China |
| Recommended Citation GB/T 7714 | Bai, Shouli,Li, Qiangqiang,Han, Ning,et al. Synthesis of novel BiVO4/Cu2O heterojunctions for improving BiVO4 towards NO2 sensing properties[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2020,567:37-44. |
| APA | Bai, Shouli.,Li, Qiangqiang.,Han, Ning.,Zhang, Kewei.,Tang, Pinggui.,...&Chen, Aifan.(2020).Synthesis of novel BiVO4/Cu2O heterojunctions for improving BiVO4 towards NO2 sensing properties.JOURNAL OF COLLOID AND INTERFACE SCIENCE,567,37-44. |
| MLA | Bai, Shouli,et al."Synthesis of novel BiVO4/Cu2O heterojunctions for improving BiVO4 towards NO2 sensing properties".JOURNAL OF COLLOID AND INTERFACE SCIENCE 567(2020):37-44. |
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