Synthesis of morphology and size-controllable SnO2 hierarchical structures and their gas-sensing performance

2018 ◽  
Vol 457 ◽  
pp. 1064-1071 ◽  
Author(s):  
Lingna Xu ◽  
Wen Zeng ◽  
Yanqiong Li
Keyword(s):  
Gas Sensing ◽  
Hierarchical Structures ◽  
Sensing Performance

scholarly journals High-Performance Gas Sensor of Polyaniline/Carbon Nanotube Composites Promoted by Interface Engineering

Sensors ◽  
2019 ◽  
Vol 20 (1) ◽  
pp. 149 ◽  
Author(s):  
Weiyu Zhang ◽  
Shuai Cao ◽  
Zhaofeng Wu ◽  
Min Zhang ◽  
Yali Cao ◽  
...  
Keyword(s):  
High Performance ◽  
Structural Changes ◽  
Gas Sensing ◽  
Response Times ◽  
Limit Of Detection ◽  
Hierarchical Structures ◽  
Cost Effective ◽  
One Dimensional ◽  
P Type ◽  
Sensing Performance

Inspired by the enhanced gas-sensing performance by the one-dimensional hierarchical structure, one-dimensional hierarchical polyaniline/multi-walled carbon nanotubes (PANI/CNT) fibers were prepared. Interestingly, the simple heating changed the sensing characteristics of PANI from p-type to n-type and n-type PANI and p-type CNTs form p–n hetero junctions at the core–shell interface of hierarchical PANI/CNT composites. The p-type PANI/CNT (p-PANI/CNT) and n-type PANI/CNT (n-PANI/CNT) performed the higher sensitivity to NO2 and NH3, respectively. The response times of p-PANI/CNT and n-PANI/CNT to 50 ppm of NO2 and NH3 are only 5.2 and 1.8 s, respectively, showing the real-time response. The estimated limit of detection for NO2 and NH3 is as low as to 16.7 and 6.4 ppb, respectively. After three months, the responses of p-PANI/CNT and n-PANI/CNT decreased by 19.1% and 11.3%, respectively. It was found that one-dimensional hierarchical structures and the deeper charge depletion layer enhanced by structural changes of PANI contributed to the sensitive and fast responses to NH3 and NO2. The formation process of the hierarchical PANI/CNT fibers, p–n transition, and the enhanced gas-sensing performance were systematically analyzed. This work also predicts the development prospects of cost-effective, high-performance PANI/CNT-based sensors.

Nanosheet-assembled flower-like SnO2 hierarchical structures with enhanced gas-sensing performance

2015 ◽  
Vol 161 ◽  
pp. 499-502 ◽  
Author(s):  
Qu Zhou ◽  
Weigen Chen ◽  
Jian Li ◽  
Chao Tang ◽  
He Zhang
Keyword(s):  
Gas Sensing ◽  
Hierarchical Structures ◽  
Sensing Performance

Enhancement of nitride-gas sensing performance of SiC7 monolayer induced by external electric field

Vacuum ◽  
2021 ◽  
pp. 110393
Author(s):  
Zijia Zhao ◽  
Yongliang Yong ◽  
Ruilin Gao ◽  
Song Hu ◽  
Qingxiao Zhou ◽  
...  
Keyword(s):  
Electric Field ◽  
External Electric Field ◽  
Gas Sensing ◽  
Sensing Performance

Adsorption of the Gas Molecules (NH3, C2H6O, C3H6O, CO, H2S) on noble metal (Ag, Au, Pt, Pd, Ru)–Doped MoSe2 Monolayer: A First-Principles Study

2021 ◽  
Author(s):  
Lanjuan Zhou ◽  
Sujing Yu ◽  
Yan Yang ◽  
Qi Li ◽  
Tingting Li ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Noble Metal ◽  
First Principles ◽  
Density Functional ◽  
Noble Metals ◽  
Gas Sensing ◽  
Functional Theory ◽  
First Principles Study ◽  
Gas Molecules ◽  
Sensing Performance

In this paper, the effects of five noble metals (Au, Pt, Pd, Ag, Ru) doped MoSe2 on improving gas sensing performance were predicted through density functional theory (DFT) based on...

scholarly journals Correction to: Selective ethanol gas sensing performance of flower-shaped CuO composed of thin nanoplates

2021 ◽  
Author(s):  
Ahmad Umar ◽  
A. A. Ibrahim ◽  
Hassan Algadi ◽  
Umesh T. Nakate ◽  
Sandip P. Choudhury ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Sensing Performance

Extraordinary H2S gas sensing performance of ZnO/rGO external and internal heterojunctions

2021 ◽  
pp. 160457
Author(s):  
Tran Khoa Dang ◽  
Nguyen Tang Son ◽  
Nguyen Thi Lanh ◽  
Phan Hong Phuoc ◽  
Nguyen Ngoc Viet ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Sensing Performance

Organic Gas Sensing Performance of the Borophene van der Waals Heterostructure

2020 ◽  
Author(s):  
Jiale Shen ◽  
Zhi Yang ◽  
Yatong Wang ◽  
Li-Chun Xu ◽  
Ruiping Liu ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Van Der Waals ◽  
Van Der Waals Heterostructure ◽  
Sensing Performance
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