Integrated Reduced Graphene Oxide/Polypyrrole Hybrid Aerogels for Simultaneous Photocatalytic Decontamination and Water Evaporation

2021 ◽  
pp. 120820
Author(s):  
Shiwei Yan ◽  
Haojie Song ◽  
Yong Li ◽  
Jin Yang ◽  
Xiaohua Jia ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Water Evaporation ◽  
Reduced Graphene ◽  
Hybrid Aerogels

Rational design of a bi-layered reduced graphene oxide film on polystyrene foam for solar-driven interfacial water evaporation

2017 ◽  
Vol 5 (31) ◽  
pp. 16212-16219 ◽  
Author(s):  
Le Shi ◽  
Yuchao Wang ◽  
Lianbin Zhang ◽  
Peng Wang
Keyword(s):  
Graphene Oxide ◽  
Oxide Film ◽  
Reduced Graphene Oxide ◽  
Rational Design ◽  
Water Evaporation ◽  
Interfacial Water ◽  
Polystyrene Foam ◽  
Reduced Graphene

A bi-layered photothermal material based on reduced graphene oxide film with nonporous polystyrene foam as substrate for solar-driven interfacial water evaporation.

One-Pot Self-Assembled, Reduced Graphene Oxide/Palladium Nanoparticle Hybrid Aerogels for Electrocatalytic Applications

2015 ◽  
Vol 180 ◽  
pp. 902-908 ◽  
Author(s):  
Sol Yun ◽  
Sangmin Lee ◽  
Changhwan Shin ◽  
Sungjin Park ◽  
Seong Jung Kwon ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Palladium Nanoparticle ◽  
One Pot ◽  
Reduced Graphene ◽  
Self Assembled ◽  
Hybrid Aerogels

scholarly journals Anchoring Fe3O4 nanoparticles in a reduced graphene oxide aerogel matrix via polydopamine coating

2018 ◽  
Vol 9 ◽  
pp. 591-601 ◽  
Author(s):  
Błażej Scheibe ◽  
Radosław Mrówczyński ◽  
Natalia Michalak ◽  
Karol Załęski ◽  
Michał Matczak ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Industrial Applications ◽  
Magnetic Actuators ◽  
Reduced Graphene ◽  
The Matrix ◽  
Potential Applications ◽  
Reduced Graphene Oxide Aerogel ◽  
Magnetite Particles ◽  
Hybrid Aerogels

Reduced graphene oxide–magnetite hybrid aerogels attract great interest thanks to their potential applications, e.g., as magnetic actuators. However, the tendency of magnetite particles to migrate within the matrix and, ultimately, escape from the aerogel structure, remains a technological challenge. In this article we show that coating magnetite particles with polydopamine anchors them on graphene oxide defects, immobilizing the particles in the matrix and, at the same time, improving the aerogel structure. Polydopamine coating does not affect the magnetic properties of magnetite particles, making the fabricated materials promising for industrial applications.

Rational design of reduced graphene oxide film for solar thermal desalination

2019 ◽  
Vol 19 (6) ◽  
pp. 1704-1710
Author(s):  
Yuan Meng ◽  
Haibo Li
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Rational Design ◽  
Evaporation Rate ◽  
Pure Water ◽  
Cost Effective ◽  
Solar Thermal ◽  
Water Evaporation ◽  
Reduced Graphene ◽  
Thermal Desalination

Abstract Solar water evaporation assisted by photothermal membranes is considered to be one of the sustainable and cost-effective strategies for pure water generation and wastewater treatment. In this work, a self-assembled reduced graphene oxide (rGO) film has been prepared and proposed for direct solar thermal desalination. The morphology, structure, absorbance and desalination performance of the rGO film are explored. It is found that rGO film with optimized microstructure delivers an evaporation rate of 0.87 kg m−2 h−1 with solar thermal conversion efficiency of 46% under 1 sun illumination. Moreover, the evaporation rate of rGO film remains at 0.86 kg/m2·h−1 after ten times recycling, demonstrating the superior reusability.

Poly(3,4-ethylene dioxythiophene):Poly(styrene sulfonate)-Functionalized Reduced Graphene Oxide Electrode for Ionic Electroactive Polymer Actuators

2020 ◽  
Vol 12 (3) ◽  
pp. 313-318
Author(s):  
Minjeong Park ◽  
Sangwoo Kim ◽  
Keun Yong Sohn ◽  
Seonpil Kim ◽  
Minhyon Jeon
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Weight Ratio ◽  
Electroactive Polymer ◽  
Water Evaporation ◽  
Pressing Method ◽  
Styrene Sulfonate ◽  
Reduced Graphene ◽  
Poly Styrene Sulfonate ◽  
Composite Paper

Ionic electroactive polymer (IEAP) actuators, which offer advantages such as reduced device weight, flexibility, and large deformation under low voltages (1–5 V), have found utility in applications such as biomimetic robots, actuators, and sensors. In this context, in this study, we fabricate poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate)-reduced graphene oxide (PEDOT:PSS-rGO) composite paper electrodes for actuator application. PEDOT:PSS-rGO paper electrodes are prepared by vacuum filtration of a PEDOT:PSS-rGO mixture that is subsequently subjected to heat treatment under an argon atmosphere via furnace annealing. We find that a 5:1 weight ratio of PEDOT:PSS-GO provides the lowest sheet resistance. We next fabricate a PEDOT:PSS-rGO actuator via filtration and the hot-pressing method with rGO paper electrodes, which have hydrophobic properties and low liquid permeability that effectively prevents water evaporation, and we examine its actuating performance. Our results indicate that after functionalization with PEDOT:PSS, the electrical properties and surface roughness of PEDOT:PSS-rGO composite paper electrode are improved. Further, the mechanical properties of the IEAP actuator based on the PEDOT:PSS-rGO paper electrodes exhibits enhanced performance by a factor of 4 relative to an actuator with conventional rGO electrodes.

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