Room Temperature Gas Sensing of Two-Dimensional Titanium Carbide (MXene)

2017 ◽  
Vol 9 (42) ◽  
pp. 37184-37190 ◽  
Author(s):  
Eunji Lee ◽  
Armin VahidMohammadi ◽  
Barton C. Prorok ◽  
Young Soo Yoon ◽  
Majid Beidaghi ◽  
...  
Keyword(s):  
Titanium Carbide ◽  
Room Temperature ◽  
Gas Sensing ◽  
Two Dimensional

Two-dimensional NiO nanosheets with enhanced room temperature NO2sensing performance via Al doping

2017 ◽  
Vol 19 (29) ◽  
pp. 19043-19049 ◽  
Author(s):  
Shuai Wang ◽  
Da Huang ◽  
Shusheng Xu ◽  
Wenkai Jiang ◽  
Tao Wang ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Two Dimensional ◽  
Al Doping ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Nio Nanosheets

Defects caused by Al3+doping significantly affect the gas-sensing properties of NiO nanosheets.

2D/2D/2D Ti3C2Tx@TiO2@MoS2 Heterostructure as Ultrafast and High-sensitivity NO2 Gas Sensor at Room-temperature

2022 ◽  
Author(s):  
Zhuo Liu ◽  
He Lv ◽  
Ying Xie ◽  
Jue Wang ◽  
Jiahui Fan ◽  
...  
Keyword(s):  
Gas Sensor ◽  
Gas Sensors ◽  
Room Temperature ◽  
Gas Sensing ◽  
2D Materials ◽  
High Sensitivity ◽  
Two Dimensional ◽  
No2 Gas Sensor ◽  
2D Structure ◽  
Sensing Application

The very diverse two-dimensional (2D) materials have bloomed in NO2 gas sensing application that provide new opportunities and challenges in function oriented gas sensors. In this work, a 2D/2D/2D structure...

scholarly journals Room temperature and high response ethanol sensor based on two dimensional hybrid nanostructures of WS2/GONRs

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Hassan Ahmadvand ◽  
Azam Iraji zad ◽  
Raheleh Mohammadpour ◽  
Seyed Hossein Hosseini-Shokouh ◽  
Elham Asadian
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Xrd Analysis ◽  
High Response ◽  
Hybrid Nanostructures ◽  
Molar Ratio ◽  
Two Dimensional ◽  
X Ray ◽  
Bending Radius ◽  
Gas Response

Abstract Here in this research, room temperature ethanol and humidity sensors were prepared based on two dimensional (2D) hybrid nanostructures of tungsten di-sulfide (WS2) nanosheets and graphene oxide nanoribbons (GONRs) as GOWS. The characterization results based on scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (ESD), Raman spectroscopy and X-ray diffraction (XRD) analysis confirmed the hybrid formations. Ethanol sensing of drop-casted GOWS films on SiO2 substrate indicated increasing in gas response up to 5 and 55 times higher compared to pristine GONRs and WS2 films respectively. The sensing performance of GOWS hybrid nanostructures was investigated in different concentrations of WS2, and the highest response was about 126.5 at 1 ppm of ethanol in 40% relative humidity (R.H.) for WS2/GONRs molar ratio of 10. Flexibility of GOWS was studied on Kapton substrate with bending radius of 1 cm, and the gas response decreased less than 10% after 30th bending cycles. The high response and flexibility of the sensors inspired that GOWS are promising materials for fabrication of wearable gas sensing devices.

Facile Synthesis of Hierarchical CuO Microspheres and their Gas Sensing Properties for NOx at Room Temperature

2015 ◽  
Vol 68 (10) ◽  
pp. 1569 ◽  
Author(s):  
Wanzhen Song ◽  
Hongyuan Wu ◽  
Jingchao Wang ◽  
Yufei Lin ◽  
Jiabao Song ◽  
...  
Keyword(s):  
Room Temperature ◽  
Gas Sensing ◽  
Gas Diffusion ◽  
Two Dimensional ◽  
Facile Synthesis ◽  
Short Response Time ◽  
Gas Sensing Properties ◽  
Gas Response ◽  
Cuo Microspheres ◽  
Unique Hierarchical Structure

In this research, hierarchical CuO microspheres have been successfully synthesised by a facile reflux method. Scanning electron microscopy results clearly revealed that the hierarchical CuO microspheres were composed of two-dimensional nanosheets. The morphology of the prepared products could be tailored by changing the precursor concentration. The CuO-2 sample shows a higher NOx gas sensing performance with a low detection limit of 0.97 ppm, high gas response of 64.93 %, and short response time of 5.33 s to 97.0 ppm NOx at room temperature. The CuO-2 sensor also presents good selectivity and stability. The significantly improved gas response was concluded to be related to the well aligned microstructures and the improved conductivity of the CuO-2 sample. The unique hierarchical structure allows effective and rapid gas diffusion towards the sensing surfaces. In addition, the sensing mechanism based on the hierarchical CuO microspheres is discussed.

scholarly journals Hydrothermally derived p-n MoS2-ZnO from p-p MoS2-ZIF-8 for efficient detection of NO2 at room temperature

2021 ◽  
Author(s):  
Muhammad Ikram ◽  
He Lv ◽  
Zhuo Liu ◽  
Keying Shi ◽  
Yongxiang Gao
Keyword(s):  
Energy Storage ◽  
Transition Metals ◽  
Room Temperature ◽  
Gas Sensing ◽  
Two Dimensional ◽  
Research Attention ◽  
The Poor ◽  
Efficient Detection ◽  
Poor Stability

Two-dimensional transition metals dichalcogenide (2D-TMDs), and semiconductors metals oxides (MOs) have triggered enormous research attention in the field of energy storage, catalysis, and gas sensing. However, the poor stability of...

scholarly journals NG.5 - Two-Dimensional Titanium Oxide Nanosheets for NO2 Gas Sensing at Room Temperature

2018 ◽  
Author(s):  
M. Shafiei ◽  
H. Khan ◽  
W. Wlodarski ◽  
Y. Li ◽  
D. Ye ◽  
...  
Keyword(s):  
Titanium Oxide ◽  
Room Temperature ◽  
Gas Sensing ◽  
Two Dimensional

Sulfur-Doped Titanium Carbide MXenes for Room-Temperature Gas Sensing

ACS Sensors ◽  
2020 ◽  
Vol 5 (9) ◽  
pp. 2915-2924 ◽  
Author(s):  
Shoumya Nandy Shuvo ◽  
Ana Maria Ulloa Gomez ◽  
Avanish Mishra ◽  
Winston Yenyu Chen ◽  
Avinash M. Dongare ◽  
...  
Keyword(s):  
Titanium Carbide ◽  
Room Temperature ◽  
Gas Sensing

An ultra-sensitive gas sensor based on two-dimensional manganese porphyrin monolayer

2021 ◽  
Author(s):  
Ze-Wen Hao ◽  
Mi-Mi Dong ◽  
Rui Qin Zhang ◽  
Chuankui Wang ◽  
Xiaoxiao Fu
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Room Temperature ◽  
Gas Sensing ◽  
Environmental Safety ◽  
Low Power Consumption ◽  
Two Dimensional ◽  
Manganese Porphyrin ◽  
Highly Sensitive ◽  
Important Solution

The development of highly sensitive, low-power consumption, stable and recyclable gas sensing devices at room temperature has become an important solution for the environmental safety detection. Utilizing two-dimensional metalloporphyrin monolayer...

ABOUT HEAT CAPACITY OF TITANIUM CARBIDE TiCx

2019 ◽  
pp. 56-66
Author(s):  
I. Khidirov ◽  
V. V. Getmanskiy ◽  
A. S. Parpiev ◽  
Sh. A. Makhmudov
Keyword(s):  
Heat Capacity ◽  
High Temperature ◽  
Titanium Carbide ◽  
Temperature Dependence ◽  
Carbon Concentration ◽  
Room Temperature ◽  
Thermodynamic Characteristics ◽  
Liquid Nitrogen Temperature ◽  
Analysis Data ◽  
Thermal Excitation

This work relates to the field of thermophysical parameters of refractory interstitial alloys. The isochoric heat capacity of cubic titanium carbide TiCx has been calculated within the Debye approximation in the carbon concentration  range x = 0.70–0.97 at room temperature (300 K) and at liquid nitrogen temperature (80 K) through the Debye temperature established on the basis of neutron diffraction analysis data. It has been found out that at room temperature with decrease of carbon concentration the heat capacity significantly increases from 29.40 J/mol·K to 34.20 J/mol·K, and at T = 80 K – from 3.08 J/mol·K to 8.20 J/mol·K. The work analyzes the literature data and gives the results of the evaluation of the high-temperature dependence of the heat capacity СV of the cubic titanium carbide TiC0.97 based on the data of neutron structural analysis. It has been proposed to amend in the Neumann–Kopp formula to describe the high-temperature dependence of the titanium carbide heat capacity. After the amendment, the Neumann–Kopp formula describes the results of well-known experiments on the high-temperature dependence of the heat capacity of the titanium carbide TiCx. The proposed formula takes into account the degree of thermal excitation (a quantized number) that increases in steps with increasing temperature.The results allow us to predict the thermodynamic characteristics of titanium carbide in the temperature range of 300–3000 K and can be useful for materials scientists.

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