Chelation-assisted soft-template synthesis of ordered mesoporous zinc oxides for low concentration gas sensing

2016 ◽  
Vol 4 (39) ◽  
pp. 15064-15071 ◽  
Author(s):  
Xinran Zhou ◽  
Yongheng Zhu ◽  
Wei Luo ◽  
Yuan Ren ◽  
Pengcheng Xu ◽  
...  

Mesoporous zinc oxides were successfully synthesized through a chelation-assisted soft-template method and showed high performance in ethanol vapor sensing.

RSC Advances ◽  
2021 ◽  
Vol 11 (26) ◽  
pp. 15959-15968
Author(s):  
Guozheng Zhao ◽  
Hui Liang ◽  
Hongzhu Xu ◽  
Changbo Li ◽  
Qingwei Tan ◽  
...  

Ordered mesoporous Ag/CeO2 catalysts have been successfully synthesized by a microwave assisted soft template method.


Nanomaterials ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1989
Author(s):  
Yuan-Chang Liang ◽  
Yen-Cheng Chang ◽  
Wei-Cheng Zhao

The porous zinc oxide-nickel oxide (ZnO-NiO) composite nanosheets were synthesized via sputtering deposition of NiO thin film on the porous ZnO nanosheet templates. Various NiO film coverage sizes on porous ZnO nanosheet templates were achieved by changing NiO sputtering duration in this study. The microstructures of the porous ZnO-NiO composite nanosheets were investigated herein. The rugged surface feature of the porous ZnO-NiO composite nanosheets were formed and thicker NiO coverage layer narrowed the pore size on the ZnO nanosheet template. The gas sensors based on the porous ZnO-NiO composite nanosheets displayed higher sensing responses to ethanol vapor in comparison with the pristine ZnO template at the given target gas concentrations. Furthermore, the porous ZnO-NiO composite nanosheets with the suitable NiO coverage content demonstrated superior gas-sensing performance towards 50–750 ppm ethanol vapor. The observed ethanol vapor-sensing performance might be attributed to suitable ZnO/NiO heterojunction numbers and unique porous nanosheet structure with a high specific surface area, providing abundant active sites on the surface and numerous gas diffusion channels for the ethanol vapor molecules. This study demonstrated that coating of NiO on the porous ZnO nanosheet template with a suitable coverage size via sputtering deposition is a promising route to fabricate porous ZnO-NiO composite nanosheets with a high ethanol vapor sensing ability.


RSC Advances ◽  
2014 ◽  
Vol 4 (107) ◽  
pp. 62673-62677 ◽  
Author(s):  
Zhiguang Wang ◽  
Yueming Li ◽  
Xiao-Jun Lv

N-doped ordered mesoporous carbon preparedviaa template method showed improved electrochemical performance as an anode material in sodium ion batteries.


2012 ◽  
Vol 602-604 ◽  
pp. 1355-1358
Author(s):  
Ren Chun Yang ◽  
Feng Yun Ma ◽  
Ding Xing Tang

To construct 3D ordered hierarchical materials, Si, Al and Ti colloids precursors were controlled prepared via dual template method in which the colloidal crystals and P123 acted as hard-template and soft-template, respectively. The results showed that ordered hierarchical SiO2, Al2O3 and TiO2 were successfully prepared. The difference of the structure of samples suggested that hydrolysis rate of the precursors play an important role on pore structure of the samples.


2019 ◽  
Vol 1 (5) ◽  
pp. 1209-1219 ◽  
Author(s):  
Takahiro Komamura ◽  
Kenta Okuhara ◽  
Shin Horiuchi ◽  
Yuta Nabae ◽  
Teruaki Hayakawa

2020 ◽  
Vol 8 (28) ◽  
pp. 9671-9677 ◽  
Author(s):  
Sha Wang ◽  
Zhimin Gao ◽  
Guoshuai Song ◽  
Yantao Yu ◽  
Wenxiu He ◽  
...  

The structure–function relationship of CuO hierarchical morphologies in gas sensing has been revealed.


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