An α-Fe2O3/NiO p–n hierarchical heterojunction for the sensitive detection of triethylamine

2020 ◽  
Vol 7 (7) ◽  
pp. 1532-1539 ◽  
Author(s):  
Shouli Bai ◽  
Jingyi Han ◽  
Ning Han ◽  
Kewei Zhang ◽  
Jianhua Sun ◽  
...  
Keyword(s):  
Specific Surface ◽  
Hierarchical Structures ◽  
Sensitive Detection ◽  
Sensing Properties ◽  
Sensing Performance

The 4Fe/Ni composite exhibits enhanced sensing properties to TEA compared with pristine α-Fe2O3. The enhancing sensing performance is attributed to big specific surface of hierarchical structures and the formation of p–n heterojunction.

scholarly journals High acetone sensing properties of In2O3–NiO one-dimensional heterogeneous nanofibers based on electrospinning

RSC Advances ◽  
2021 ◽  
Vol 11 (19) ◽  
pp. 11215-11223
Author(s):  
Xiangxiang Fan ◽  
Yajuan Xu ◽  
Wuming He
Keyword(s):  
Detection Limit ◽  
One Dimensional ◽  
Sensing Properties ◽  
Sensing Performance

The In2O3–NiO nanofiber with p–n heterojunctions exhibited an enhanced acetone sensing performance, and the detection limit reached 10 ppb.

A novel rGO-decorated ZnO/BiVO4 heterojunction for the enhancement of NO2 sensing properties

2020 ◽  
Vol 7 (4) ◽  
pp. 1026-1033 ◽  
Author(s):  
Shouli Bai ◽  
Ke Tian ◽  
Ning Han ◽  
Jian Guo ◽  
Ruixian Luo ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Sensing Properties ◽  
Sensing Performance

A novel ZnO/BiVO4/rGO composite exhibits excellent gas sensing performance, which is attributed to the formation of n–n heterojunctions and decoration with rGO.

Coral-like ZnFe2O4–ZnO mesoporous heterojunction architectures: synthesis and enhanced sensing properties for triethylamine

2020 ◽  
Vol 7 (9) ◽  
pp. 1918-1926 ◽  
Author(s):  
Tianye Yang ◽  
Xiaodong Yang ◽  
Mingming Zhu ◽  
Hongwei Zhao ◽  
Mingzhe Zhang
Keyword(s):  
Response Time ◽  
Fast Response ◽  
Sensing Properties ◽  
Fast Response Time ◽  
Sensing Performance

A unique coral-like ZnFe2O4–ZnO heterojunction architecture based sensor has been synthesized and shows excellent sensing performance for TEA with a particularly fast response time of 0.9 s.

Synthesis of Hierarchical Hetero-Junction Composite and Gas Detection Performance in Asphalt Road

2020 ◽  
Vol 15 (4) ◽  
pp. 516-522
Author(s):  
Ruisheng Feng ◽  
Yuchao Xia
Keyword(s):  
Hydrothermal Method ◽  
Gas Sensor ◽  
Gas Sensing ◽  
Hierarchical Structures ◽  
Gas Detection ◽  
Surface Accessibility ◽  
Sensing Properties ◽  
Asphalt Road ◽  
One Step ◽  
Nio Nanosheets

In this work, we have triumphantly synthesized porous nanosheet-assembled ZnO/NiO hierarchical microflower via a one-step hydrothermal method. On this basis, a corresponding gas sensor was fabricated to detect its sensitivity to H2S gas. The results indicated that porous flower-like hierarchical structures hold favorable superiority in the gas sensing towards H2S as compared to ZnO/NiO nanosheets. The superior sensing behavior may correlate with the special architecture offering abundant reaction sites, rapid channels and surface accessibility for gas transportation. Besides, p–n heterojunction at their interface and strong catalysis of NiO also play an important role in the enhancement of sensing properties.

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