Porous metal-graphene oxide nanocomposite sensors with high ammonia detection ability

2020 ◽  
Author(s):  
Balaji G. Ghule ◽  
Nansaheb M. Shinde Writing ◽  
Siddheshwar D. Raut ◽  
Shoyebmohamad F. Shaikh ◽  
Abdullah M. Al-Enizi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Porous Metal ◽  
Detection Ability ◽  
High Ammonia ◽  
Ammonia Detection ◽  
Nanocomposite Sensors

Flexible, biocompatible, and electroconductive Polyurethane foam composites coated with graphene oxide for ammonia detection

2021 ◽  
pp. 130269
Author(s):  
Yeon Jae Kim ◽  
Hoe Jin Kang ◽  
Charles Travis Moerk ◽  
Byong-Taek Lee ◽  
Jong Seob Choi ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Polyurethane Foam ◽  
Ammonia Detection

Chemically Reduced Graphene Oxide for Ammonia Detection at Room Temperature

2013 ◽  
Vol 5 (15) ◽  
pp. 7599-7603 ◽  
Author(s):  
Ruma Ghosh ◽  
Anupam Midya ◽  
Sumita Santra ◽  
Samit K. Ray ◽  
Prasanta K. Guha
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Room Temperature ◽  
Reduced Graphene ◽  
Chemically Reduced Graphene Oxide ◽  
Ammonia Detection

The Investigation of Reduced Graphene Oxide/P3HT Composite Films for Ammonia Detection

2014 ◽  
Vol 154 (1) ◽  
pp. 73-81 ◽  
Author(s):  
Zongbiao Ye ◽  
Yadong Jiang ◽  
Huiling Tai ◽  
Zhen Yuan
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Composite Films ◽  
Reduced Graphene ◽  
Ammonia Detection

Graphene oxide/polystyrene composite nanofibers on quartz crystal microbalance electrode for the ammonia detection

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 40620-40627 ◽  
Author(s):  
Yongtang Jia ◽  
Lizhu Chen ◽  
Hui Yu ◽  
Yumei Zhang ◽  
Fengchun Dong
Keyword(s):  
Graphene Oxide ◽  
Quartz Crystal Microbalance ◽  
Quartz Crystal ◽  
Composite Nanofibers ◽  
Gas Detection ◽  
Ammonia Gas ◽  
Ammonia Detection

Nanoporous G-COOH/PS nanofiber integrated with QCM equipment was established to realize ammonia gas detection.

Chemically fluorinated graphene oxide for room temperature ammonia detection at ppb levels

2017 ◽  
Vol 5 (36) ◽  
pp. 19116-19125 ◽  
Author(s):  
Yeon Hoo Kim ◽  
Ji Soo Park ◽  
You-Rim Choi ◽  
Seo Yun Park ◽  
Seon Yong Lee ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Functional Groups ◽  
Room Temperature ◽  
Gas Adsorption ◽  
Ammonia Sensing ◽  
Charge Distributions ◽  
Ammonia Detection ◽  
Adsorption Energies ◽  
Fluorinated Graphene ◽  
Fluorinated Graphene Oxide

Detection of ppb level ammonia at room temperature is demonstrated using chemically fluorinated graphene oxide (CFGO). Fluorine adatom extremely enhances ammonia sensing capabilities through the changes of the charge distributions on adjacent functional groups, resulting in the variation in gas adsorption energies.

scholarly journals Fabrication of Porous Gold Film Using Graphene Oxide as a Sacrificial Layer

Materials ◽  
2019 ◽  
Vol 12 (14) ◽  
pp. 2305 ◽  
Author(s):  
Alazzam ◽  
Alamoodi ◽  
Abutayeh ◽  
Stiharu ◽  
Nerguizian
Keyword(s):  
Graphene Oxide ◽  
Oxide Layer ◽  
Gold Film ◽  
Porous Metal ◽  
Metal Films ◽  
Porous Electrodes ◽  
Fabrication Process ◽  
Etching Time ◽  
Oxide Dispersion ◽  
Porous Gold

An original and simple fabrication process to produce thin porous metal films on selected substrates is reported. The fabrication process includes the deposition of a thin layer of gold on a substrate, spin coating of a graphene oxide dispersion, etching the gold film through the graphene oxide layer, and removing the graphene oxide layer. The porosity of the thin gold film is controlled by varying the etching time, the thickness of the gold film, and the concentration of the graphene oxide dispersion. Images by scanning electron and metallurgical microscopes show a continuous gold film with random porosity formed on the substrate with a porosity size ranging between hundreds of nanometers to tens of micrometers. This general approach enables the fabrication of porous metal films using conventional microfabrication techniques. The proposed process is implemented to fabricate electrodes with patterned porosity that are used in a microfluidic system to manipulate living cells under dielectrophoresis. Porous electrodes are found to enhance the magnitude and spatial distribution of the dielectrophoretic force.

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