scholarly journals Fe-Doped ZnO/Reduced Graphene Oxide Nanocomposite with Synergic Enhanced Gas Sensing Performance for the Effective Detection of Formaldehyde

ACS Omega ◽  
2019 ◽  
Vol 4 (6) ◽  
pp. 10252-10262 ◽  
Author(s):  
Weiwei Guo ◽  
Bangyu Zhao ◽  
Qilin Zhou ◽  
Youzhou He ◽  
Zhongchang Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensing ◽  
Reduced Graphene ◽  
Doped Zno ◽  
Sensing Performance

NO2 gas sensing performance enhancement based on reduced graphene oxide decorated V2O5 thin films

2019 ◽  
Vol 30 (22) ◽  
pp. 224001 ◽  
Author(s):  
Vijendra Singh Bhati ◽  
D Sheela ◽  
Basanta Roul ◽  
Ramesh Raliya ◽  
Pratim Biswas ◽  
...  
Keyword(s):  
Thin Films ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Performance Enhancement ◽  
Gas Sensing ◽  
Reduced Graphene ◽  
V2o5 Thin Films ◽  
Sensing Performance

Enhanced H2S gas-sensing performance of α-Fe2O3 nanofibers by optimizing process conditions and loading with reduced graphene oxide

2020 ◽  
Vol 826 ◽  
pp. 154169 ◽  
Author(s):  
Nguyen Van Hoang ◽  
Chu Manh Hung ◽  
Nguyen Duc Hoa ◽  
Nguyen Van Duy ◽  
Nguyen Van Toan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensing ◽  
Process Conditions ◽  
Reduced Graphene ◽  
Sensing Performance

Fe3O4/rGO nanocomposite: synthesis and enhanced NOxgas-sensing properties at room temperature

RSC Advances ◽  
2016 ◽  
Vol 6 (43) ◽  
pp. 37085-37092 ◽  
Author(s):  
Ying Yang ◽  
Li Sun ◽  
Xiangting Dong ◽  
Hui Yu ◽  
Tingting Wang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Detection Limit ◽  
Response Time ◽  
Reduced Graphene Oxide ◽  
Room Temperature ◽  
Gas Sensing ◽  
High Sensitivity ◽  
Short Response Time ◽  
Reduced Graphene ◽  
Sensing Performance

Fe3O4nanoparticles-decorated reduced graphene oxide nanocomposites have been successfully synthesized using solvothermal-pyrolytic method. They have superior gas sensing performance with low detection limit, high sensitivity and short response time.

scholarly journals High Performance Acetylene Sensor with Heterostructure Based on WO3 Nanolamellae/Reduced Graphene Oxide (rGO) Nanosheets Operating at Low Temperature

Nanomaterials ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 909 ◽  
Author(s):  
Zikai Jiang ◽  
Weigen Chen ◽  
Lingfeng Jin ◽  
Fang Cui ◽  
Zihao Song ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensor ◽  
High Performance ◽  
Gas Sensing ◽  
Hybrid Nanocomposites ◽  
Transformer Oil ◽  
X Ray ◽  
Reduced Graphene ◽  
Sensing Performance

The development of functionalized metal oxide/reduced graphene oxide (rGO) hybrid nanocomposites concerning power equipment failure diagnosis is one of the most recent topics. In this work, WO3 nanolamellae/reduced graphene oxide (rGO) nanocomposites with different contents of GO (0.5 wt %, 1 wt %, 2 wt %, 4 wt %) were synthesized via controlled hydrothermal method. X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), thermogravimetric analyses-derivative thermogravimetric analysis-differential scanning calorimetry (TG-DTG-DSC), BET, and photoluminescence (PL) spectroscopy were utilized to investigate morphological characterizations of prepared gas sensing materials and indicated that high quality WO3 nanolamellae were widely distributed among graphene sheets. Experimental ceramic planar gas sensors composing of interdigitated alumina substrates, Au electrodes, and RuO2 heating layer were coated with WO3 nanolamellae/reduced graphene oxide (rGO) films by spin-coating technique and then tested for gas sensing towards multi-concentrations of acetylene (C2H2) gases in a carrier gas with operating temperature ranging from 50 °C to 400 °C. Among four contents of prepared samples, sensing materials with 1 wt % GO nanocomposite exhibited the best C2H2 sensing performance with lower optimal working temperature (150 °C), higher sensor response (15.0 toward 50 ppm), faster response-recovery time (52 s and 27 s), lower detection limitation (1.3 ppm), long-term stability, and excellent repeatability. The gas sensing mechanism for enhanced sensing performance of nanocomposite is possibly attributed to the formation of p-n heterojunction and the active interaction between WO3 nanolamellae and rGO sheets. Besides, the introduction of rGO nanosheets leads to the impurity of synthesized materials, which creates more defects and promotes larger specific area for gas adsorption, outstanding conductivity, and faster carrier transport. The superior gas sensing properties of WO3/rGO based gas sensor may contribute to the development of a high-performance ppm-level gas sensor for the online monitoring of dissolved C2H2 gas in large-scale transformer oil.

Improvement of NO2 gas sensing performance based on discoid tin oxide modified by reduced graphene oxide

2016 ◽  
Vol 227 ◽  
pp. 419-426 ◽  
Author(s):  
Yan Xiao ◽  
Qiuyue Yang ◽  
Zhenyu Wang ◽  
Rui Zhang ◽  
Yuan Gao ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Tin Oxide ◽  
Gas Sensing ◽  
Reduced Graphene ◽  
Sensing Performance

scholarly journals Supramolecular Functionalized Pristine Graphene Utilizing a Bio-Compatible Stabilizer towards Ultra-Sensitive Ammonia Detection

2021 ◽  
Vol 6 (1) ◽  
pp. 14
Author(s):  
Shirong Huang ◽  
Luis Antonio Panes-Ruiz ◽  
Alexander Croy ◽  
Leif Riemenschneider ◽  
Vyacheslav Khavrus ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Gas Sensors ◽  
Gas Sensing ◽  
Low Cost ◽  
Pristine Graphene ◽  
Reduced Graphene ◽  
Ammonia Detection ◽  
Sensing Performance

Recently, graphene has attracted intensive attention in the gas sensing field due to its high electrical conductivity as well as large specific surface areas. Lots of graphene-based gas sensors have been reported with excellent gas sensing performance. However, the sensing element materials for most of the above sensors actually consist of a reduced graphene oxide (rGO) derivative rather than pristine graphene, such as rGO, rGO/metal particle, rGO/polymers, etc. Complex chemical oxidation and reduction are usually involved for the preparation of reduced graphene oxide derivatives. Even though there are some pristine graphene-based gas sensors synthesizing with the approaches of chemical vapor deposition (CVD) or mechanical cleavage, the high cost of the set-up or the low productivity cannot decrease the cost of the practical sensors. In this work, we develop pristine graphene-based gas sensors utilizing flavin monocleotide sodium salt (FMNS) toward ultra-sensitive ammonia detection. The sensor has 3% response upon exposure to 10 ppm NH3 and a limit of detection of 1.6 ppm at room temperature and shows a good recovery. Raman, UV–Vis, FT-IR spectra, as well as scanning electron microscope (SEM) measurements are employed to characterize the quality of the graphene flakes, indicating a good structural quality of graphene with few defects. The effects of the concentration of graphene dispersion functionalized by FMNS on the sensing performance towards ammonia sensing were also investigated. The process is very mild, environmentally friendly, and low cost. We believe this work may pave a path to design a high-performance gas sensor with low cost and boost the application of graphene for sensing.

Impact of Reducing Agents on the Ammonia Sensing Performance of Silver Decorated Reduced Graphene Oxide: Experiment and First Principles Calculations

2021 ◽  
pp. 149886
Author(s):  
Sivalingam Muthu Mariappan ◽  
E. Mathan Kumar ◽  
Udo Schwingenschlögl ◽  
Thangeeswari Tharmar ◽  
Elangovan Vinoth ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
First Principles ◽  
Reducing Agents ◽  
First Principles Calculations ◽  
Ammonia Sensing ◽  
Reduced Graphene ◽  
Sensing Performance

Enhanced gas sensing and photocatalytic activity of reduced graphene oxide loaded TiO2 nanoparticles

2021 ◽  
pp. 138897
Author(s):  
Suresh Sagadevan ◽  
J. Anita Lett ◽  
Getu Kassegn Weldegebrieal ◽  
Md Rokon ud Dowla Biswas ◽  
Won Chun Oh ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Graphene Oxide ◽  
Tio2 Nanoparticles ◽  
Reduced Graphene Oxide ◽  
Gas Sensing ◽  
Reduced Graphene
Sign in / Sign up

Export Citation Format

Share Document