scholarly journals Graphene oxide/carbon nanoparticle thin film based IR detector: Surface properties and device characterization

AIP Advances ◽  
2015 ◽  
Vol 5 (10) ◽  
pp. 107228 ◽  
Author(s):  
Farzana Aktar Chowdhury ◽  
Mohammad Abul Hossain ◽  
Koji Uchida ◽  
Takahiro Tamura ◽  
Kosuke Sugawa ◽  
...  
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Surface Properties ◽  
Ir Detector ◽  
Device Characterization ◽  
Carbon Nanoparticle ◽  
Detector Surface

scholarly journals Influence of composition on the external quantum efficiency of reduced graphene oxide/carbon nanoparticle based photodetector used for human body IR detection

RSC Advances ◽  
2019 ◽  
Vol 9 (33) ◽  
pp. 18996-19005 ◽  
Author(s):  
Mohammad Sahabul Alam ◽  
Monny Akter Boby ◽  
Farzana Aktar Chowdhury ◽  
Hamad Albrithen ◽  
Mohammad Abul Hossain
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Human Body ◽  
Carbon Nanoparticles ◽  
Ambient Conditions ◽  
Ir Detector ◽  
Ir Radiation ◽  
Carbon Nanoparticle ◽  
Reduced Graphene ◽  
Ir Detection

We report an efficient infrared (IR) detector comprising reduced graphene oxide (RGO) and carbon nanoparticles (CNPs) for detecting human body IR radiation under ambient conditions.

Fabrication of layer-by-layer graphene oxide thin film on copper substrate by electrophoretic deposition

2020 ◽  
Vol 59 (12) ◽  
pp. 125001
Author(s):  
Nan Ye ◽  
Satoka Ohnishi ◽  
Mitsuhiro Okada ◽  
Kazuto Hatakeyama ◽  
Kazuhiko Seki ◽  
...  
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Electrophoretic Deposition ◽  
Copper Substrate ◽  
Oxide Thin Film ◽  
Layer By Layer ◽  
Layer Graphene

Thin film transistor based on graphene oxide for sensors

2020 ◽  
Author(s):  
Lalita Devi ◽  
Amodini Mishraand ◽  
Subhasis Ghosh
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Thin Film Transistor

scholarly journals X-ray Photoelectron Spectroscopy Analysis of Chitosan–Graphene Oxide-Based Composite Thin Films for Potential Optical Sensing Applications

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 478
Author(s):  
Wan Mohd Ebtisyam Mustaqim Mohd Daniyal ◽  
Yap Wing Fen ◽  
Silvan Saleviter ◽  
Narong Chanlek ◽  
Hideki Nakajima ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Graphene Oxide ◽  
Photoelectron Spectroscopy ◽  
Functional Group ◽  
Optical Sensing ◽  
Composite Thin Films ◽  
Cobalt Ions ◽  
X Ray ◽  
Sensing Applications

In this study, X-ray photoelectron spectroscopy (XPS) was used to study chitosan–graphene oxide (chitosan–GO) incorporated with 4-(2-pyridylazo)resorcinol (PAR) and cadmium sulfide quantum dot (CdS QD) composite thin films for the potential optical sensing of cobalt ions (Co2+). From the XPS results, it was confirmed that carbon, oxygen, and nitrogen elements existed on the PAR–chitosan–GO thin film, while for CdS QD–chitosan–GO, the existence of carbon, oxygen, cadmium, nitrogen, and sulfur were confirmed. Further deconvolution of each element using the Gaussian–Lorentzian curve fitting program revealed the sub-peak component of each element and hence the corresponding functional group was identified. Next, investigation using surface plasmon resonance (SPR) optical sensor proved that both chitosan–GO-based thin films were able to detect Co2+ as low as 0.01 ppm for both composite thin films, while the PAR had the higher binding affinity. The interaction of the Co2+ with the thin films was characterized again using XPS to confirm the functional group involved during the reaction. The XPS results proved that primary amino in the PAR–chitosan–GO thin film contributed more important role for the reaction with Co2+, as in agreement with the SPR results.

scholarly journals Synthesis of Sodium Alginate Graphene Oxide Thin Film for Adsorption Application

2020 ◽  
Vol 596 ◽  
pp. 012020
Author(s):  
Farah Amanina Mohd Zin ◽  
An’amt Mohamed Noor ◽  
Wan Nurshafeera Wan Mohd Nasri ◽  
Nurul Natasya Rosli ◽  
Nur Aqilah Buniamin ◽  
...  
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Sodium Alginate ◽  
Oxide Thin Film

scholarly journals Influence of Multidimensional Graphene Oxide (GO) Sheets on Anti-Biofouling and Desalination Performance of Thin-Film Composite Membranes: Effects of GO Lateral Sizes and Oxidation Degree

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2860
Author(s):  
Bárbara E. Rodríguez ◽  
María Magdalena Armendariz-Ontiveros ◽  
Rodrigo Quezada ◽  
Esther A. Huitrón-Segovia ◽  
Humberto Estay ◽  
...  
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Size Distribution ◽  
Functional Groups ◽  
Water Flow ◽  
Size Group ◽  
Polymerization Reaction ◽  
Medium Size ◽  
Film Composite ◽  
Thin Film Composite

The influence of the lateral size and the content of graphene oxide (GO) flakes in specific oxygenate functional groups on the anti-biofouling properties and performance of thin-film composite membrane (TFC) was studied. Three different multidimensional GO samples were prepared with small (500–1200 nm), medium (1200–2300 nm), and large (2300–3600 nm) size distribution, and with different degrees of oxidation (GO3 > GO2 > GO1), varying the concentration of the hydrogen peroxide amount during GO synthesis. GO1 sheets’ length have a heterogeneous size distribution containing all size groups, whilst GO2 is contained in a medium-size group, and GO3 is totally contained within a small-size group. Moreover, GO oxygenate groups were controlled. GO2 and GO3 have hydroxyl and epoxy groups at the basal plane of their sheets. Meanwhile, GO1 presented only hydroxyl groups. GO sheets were incorporated into the polyamide (PA) layer of the TFC membrane during the interfacial polymerization reaction. The incorporation of GO1 produced a modified membrane with excellent bactericidal properties and anti-adhesion capacity, as well as superior desalination performance with high water flow (133% as compared with the unmodified membrane). For GO2 and GO3, despite the significant anti-biofouling effect, a detrimental impact on desalination performance was observed. The high content of large sheets in GO2 and small sheet stacking in GO3 produced an unfavorable impact on the water flow. Therefore, the synergistic effect due to the presence of large- and small-sized GO sheets and high content of OH-functional groups (GO1) made it possible to balance the performance of the membrane.

scholarly journals Acid-Resistance Enhancement of Thin-Film Composite Membrane Using Barrier Effect of Graphene Oxide Nanosheets

Materials ◽  
2021 ◽  
Vol 14 (12) ◽  
pp. 3151
Author(s):  
Hee-Ro Chae ◽  
In-Chul Kim ◽  
Young-Nam Kwon
Keyword(s):  
Thin Film ◽  
Graphene Oxide ◽  
Acid Resistance ◽  
Barrier Effect ◽  
Graphene Oxide Nanosheets ◽  
Film Composite ◽  
Membrane Selectivity ◽  
Thin Film Composite ◽  
Acid Reaction ◽  
Walled Carbon Nanotubes

In this study, the effect of graphene oxide nanosheets (GONs) embedded in a thin-film composite (TFC) polyamide (PA) membrane on the acid resistance of the membrane was investigated by comparison with the effect of oxidized single-walled carbon nanotubes (o-SWNTs). Both GONs and o-SWNTs increased the hydrophilicity of the membranes and caused the formation of ridges and clustered bumps on the surfaces, resulting in slightly improved water permeability. However, the o-SWNTs-embedded membrane did not show a difference in acid resistance depending on the concentration of embedded material, but the acid resistance of the GONs-embedded membrane increased with increasing concentration. The acid resistance of the GONs-embedded membranes appears to be mainly due to the barrier effect caused by the nanosheet shape of the GONs along with a sacrificial role of the PA layer protruded by the addition of GONs and the decrease of acid reaction sites by the hydrogen bonding between GONs and PA. When the TFC PA membrane was prepared with a high amount (300 ppm) of the GONs without considering aggregation of GONs, membrane selectivity exceeding 95% was maintained 4.7 times longer than the control TFC membrane. This study shows that the acid resistance can be enhanced by the use of GONs, which give a barrier effect to the membrane.

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