Hierarchical hollow ZnO cubes constructed using self-sacrificial ZIF-8 frameworks and their enhanced benzene gas-sensing properties

2015 ◽  
Vol 39 (9) ◽  
pp. 7060-7065 ◽  
Author(s):  
Wenhui Li ◽  
Xiaofeng Wu ◽  
Haidi Liu ◽  
Jiayuan Chen ◽  
Wenxiang Tang ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Metal Organic Frameworks ◽  
Chemical Sensitivity ◽  
Sensing Properties ◽  
Low Concentration ◽  
Gas Sensing Properties ◽  
Metal Organic ◽  
Gaseous Benzene

Hierarchical ZnO hollow cubes constructed using Zn-based metal–organic frameworks enhance significantly chemical sensitivity towards low-concentration gaseous benzene.

scholarly journals Gas Sensing Properties of Mg-Incorporated Metal–Organic Frameworks

Sensors ◽  
2019 ◽  
Vol 19 (15) ◽  
pp. 3323 ◽  
Author(s):  
Jae-Hyoung Lee ◽  
Thanh-Binh Nguyen ◽  
Duy-Khoi Nguyen ◽  
Jae-Hun Kim ◽  
Jin-Young Kim ◽  
...  
Keyword(s):  
Pore Size ◽  
Gas Sensors ◽  
Gas Sensing ◽  
High Surface ◽  
Metal Organic Frameworks ◽  
Kinetic Properties ◽  
Sensing Properties ◽  
Sensing Applications ◽  
Gas Sensing Properties ◽  
Metal Organic

The gas sensing properties of two novel series of Mg-incorporated metal–organic frameworks (MOFs), termed Mg-MOFs-I and -II, were assessed. The synthesized iso-reticular type Mg-MOFs exhibited good crystallinity, high thermal stability, needle-shape morphology and high surface area (up to 2900 m2·g−1), which are promising for gas sensing applications. Gas-sensing studies of gas sensors fabricated from Mg-MOFs-II revealed better sensing performance, in terms of the sensor dynamics and sensor response, at an optimal operating temperature of 200 °C. The MOF gas sensor with a larger pore size and volume showed shorter response and recovery times, demonstrating the importance of the pore size and volume on the kinetic properties of MOF-based gas sensors. The gas-sensing results obtained in this study highlight the potential of Mg-MOFs gas sensors for the practical monitoring of toxic gases in a range of environments.

Fabrication of ZnO/ZnFe2O4 hollow nanocages through metal organic frameworks route with enhanced gas sensing properties

2017 ◽  
Vol 251 ◽  
pp. 27-33 ◽  
Author(s):  
Xiao Wang ◽  
Shouwei Zhang ◽  
Minghui Shao ◽  
Jinzhao Huang ◽  
Xiaolong Deng ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Metal Organic Frameworks ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Metal Organic

Synthesis of porous Cu2O/CuO cages using Cu-based metal–organic frameworks as templates and their gas-sensing properties

2015 ◽  
Vol 3 (24) ◽  
pp. 12796-12803 ◽  
Author(s):  
Yiting Wang ◽  
Yinyun Lü ◽  
Wenwen Zhan ◽  
Zhaoxiong Xie ◽  
Qin Kuang ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Gas Sensing ◽  
Metal Organic Frameworks ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Metal Organic

Porous Cu2O/CuO polyhedral cages with excellent gas-sensing properties were successfully fabricated by thermal decomposition of Cu-based metal–organic frameworks composed of polyhedral crystals.

scholarly journals MOFs-Derived Porous NiFe2O4 Nano-Octahedrons with Hollow Interiors for an Excellent Toluene Gas Sensor

Nanomaterials ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 1059 ◽  
Author(s):  
Yanlin Zhang ◽  
Chaowei Jia ◽  
Qiuyue Wang ◽  
Quan Kong ◽  
Gang Chen ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Metal Organic Framework ◽  
Fast Response ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Metal Organic ◽  
Response And Recovery ◽  
Nife2o4 Nanoparticles ◽  
Gas Molecules ◽  
Ppm Level

Toluene is extensively used in many industrial products, which needs to be effectively detected by sensitive gas sensors even at low-ppm-level concentrations. Here, NiFe2O4 nano-octahedrons were calcinated from NiFe-bimetallic metal-organic framework (MOFs) octahedrons synthesized by a facile refluxing method. The co-existence of p-Phthalic acid (PTA) and 3,3-diaminobenzidine (DAB) promotes the formation of smooth NiFe-bimetallic MOFs octahedrons. After subsequent thermal treatment, a big weight loss (about 85%) transformed NiFe2O4 nanoparticles (30 nm) into NiFe2O4 porous nano-octahedrons with hollow interiors. The NiFe2O4 nano-octahedron based sensor exhibited excellent gas sensing properties for toluene with a nice stability, fast response, and recovery time (25 s/40 s to 100 ppm toluene), and a lower detection limitation (1 ppm) at 260 °C. The excellent toluene-sensing properties can not only be derived from the hollow interiors combined with porous nano-octahedrons to favor the diffusion of gas molecules, but also from the efficient catalytic activity of NiFe2O4 nanoparticles.

Gas sensing properties of coral-like Bi0.5K0.5TiO3powders synthesized by metal-organic decomposition

2011 ◽  
Vol 22 (11) ◽  
pp. 115205 ◽  
Author(s):  
Yong Zhang ◽  
Xuejun Zheng ◽  
Tong Zhang ◽  
Jing Sun ◽  
Yan Bian ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Metal Organic ◽  
Organic Decomposition

Low concentration CO gas sensing properties of hybrid ZnO architecture

2016 ◽  
Vol 160 ◽  
pp. 12-17 ◽  
Author(s):  
A. Tamvakos ◽  
D. Calestani ◽  
D. Tamvakos ◽  
D. Pullini ◽  
M. Sgroi ◽  
...  
Keyword(s):  
Gas Sensing ◽  
Sensing Properties ◽  
Low Concentration ◽  
Gas Sensing Properties ◽  
Co Gas
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