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...

Synthesis of red/black phosphorus-based composite nanosheets with Z-scheme heterostructure for high-performance cancer phototherapy

Nanoscale ◽  
2021 ◽  
Author(s):  
Yong Kang ◽  
Zhengjun Li ◽  
Fengying Lu ◽  
Zhiguo Su ◽  
Xiaoyuan Ji ◽  
...  
Keyword(s):  
High Performance ◽  
Research Field ◽  
Black Phosphorus ◽  
Two Dimensional ◽  
The Poor ◽  
Low Efficiency ◽  
Poor Stability

Two dimensional black phosphorus nanosheets (BP NS) have attracted plenty of attentions in the research field of cancer photonic therapy. However, the poor stability and relatively low efficiency in reactive...

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.

scholarly journals Super stable water-based magnetic fluid as a dual-mode contrast agent

2021 ◽  
Vol 10 (1) ◽  
pp. 1031-1045
Author(s):  
Hongcai Li ◽  
Tinghua Li ◽  
Qian Wu ◽  
Rui Wang ◽  
Ruoyu Hong ◽  
...  
Keyword(s):  
Contrast Agent ◽  
Magnetic Fluid ◽  
Room Temperature ◽  
Stability Index ◽  
Visual Observation ◽  
Early Diagnosis Of Cancer ◽  
The Poor ◽  
The Stability ◽  
Poor Stability

Abstract Early diagnosis of cancer has become one of the effective ways to prevent and treat cancer. At present, magnetic resonance imaging (MRI) diagnosis based on nanosized iron oxide with no toxicity and excellent biocompatibility has attracted much attention. But the poor stability of magnetic fluid (MF) is becoming more and more prominent. In view of the poor stability of MF, the dodecanethiol-poly(methacrylic acid) (DDT-PMAA) as an outer shell was prepared for the MFs (Fe3O4@DDT-PMAA MF) to improve the stability. We also compared the amount of reactants, the ratio of reactants, and the reaction temperature, and finally screened out the best reaction conditions, so as to get more stable products. The stability of the system was studied by visual observation, stability index (I), and magnetic weight change. The results demonstrated that Fe3O4@DDT-PMAA can be stable for more than 60 days. The T 1 mapping image showed that the longitudinal relaxivity (r 1) value was 6.9 mM−1 s−1 (1.5 T, room temperature), which was higher than the commercial contrast agent SHU-555 (r 1 = 2.9 mM−1 s−1), but the transverse relaxivity (r 2) value accounted for 64.48% of the commercial contrast agent Feridex (r 2 = 67.8 mM−1 s−1, 1.5 T, room temperature) because the outermost layer was encapsulated by a polymer. In addition, the imaging effect was more vivid and there was almost no background interference of T 1- and T 2-weighted images in vivo, which indicated that the Fe3O4@DDT-PMAA MF exhibited excellent potential in MRI applications.

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.

Metal-based electrocatalysts for sulfur cathodes in room-temperature Na-S batteries

2021 ◽  
Author(s):  
Xiang Long Huang ◽  
Shi Xue Dou ◽  
Zhiming M. Wang
Keyword(s):  
Energy Storage ◽  
Room Temperature ◽  
Next Generation ◽  
Energy Storage Devices ◽  
Research Attention ◽  
Storage Devices ◽  
Intensive Research ◽  
Sodium Sulfur ◽  
Sulfur Cathodes

Room-temperature sodium-sulfur (RT Na-S) batteries have recently captured intensive research attention from the community and are regarded as one of promising next-generation energy storage devices, since they not only integrate...

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

Room-temperature successive ion transfer chemical synthesis and the efficient acetone gas sensor and electrochemical energy storage applications of Bi2O3 nanostructures

2018 ◽  
Vol 42 (15) ◽  
pp. 12530-12538 ◽  
Author(s):  
Pritamkumar V. Shinde ◽  
Balaji G. Ghule ◽  
Nanasaheb M. Shinde ◽  
Qi Xun Xia ◽  
Shoyebmohamad Shaikh ◽  
...  
Keyword(s):  
Energy Storage ◽  
Chemical Synthesis ◽  
Gas Sensor ◽  
Room Temperature ◽  
Gas Sensing ◽  
Electrochemical Energy Storage ◽  
Ion Transfer ◽  
Energy Storage Applications ◽  
Electrochemical Energy

Successive ion transfer synthesis, efficient chemoresistive gas sensing and asymmetric electrochemical supercapacitive properties of Bi2O3 nanostructures are unveiled.

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