Rational design of reduced graphene oxide film for solar 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.

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

Journal of Materials Chemistry A ◽

10.1039/c6ta09810j ◽

2017 ◽

Vol 5 (31) ◽

pp. 16212-16219 ◽

Cited By ~ 134

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.

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Free-standing reduced graphene oxide (rGO) membrane for salt-rejecting solar desalination via size effect

Nanophotonics ◽

10.1515/nanoph-2020-0396 ◽

2020 ◽

Vol 9 (15) ◽

pp. 4601-4608 ◽

Cited By ~ 1

Author(s):

Pengyu Zhuang ◽

Hanyu Fu ◽

Ning Xu ◽

Bo Li ◽

Jun Xu ◽

...

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Conversion Efficiency ◽

High Salinity ◽

Interlayer Spacing ◽

Structural Instability ◽

Solar Thermal ◽

Free Standing ◽

Solar Desalination ◽

Reduced Graphene

AbstractInterfacial solar vapor generation has revived the solar-thermal-based desalination due to its high conversion efficiency of solar energy. However, most solar evaporators reported so far suffer from severe salt-clogging problems during solar desalination, leading to performance degradation and structural instability. Here, we demonstrate a free-standing salt-rejecting reduced graphene oxide (rGO) membrane serving as an efficient, stable, and antisalt-fouling solar evaporator. The evaporation rate of the membrane reaches up to 1.27 kg m−2 h−1 (solar–thermal conversion efficiency ∼79%) under one sun, out of 3.5 wt% brine. More strikingly, due to the tailored narrow interlayer spacing, the rGO membrane can effectively reject ions, preventing salt accumulation even for high salinity brine (∼8 wt% concentration). With enabled salt-antifouling capability, flexibility, as well as stability, our rGO membrane serves as a promising solar evaporator for high salinity brine treatment.

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Paper-based potentiometric sensing devices modified with chemically reduced graphene oxide (CRGO) for trace level determination of pholcodine (opiate derivative drug)

RSC Advances ◽

10.1039/d1ra00581b ◽

2021 ◽

Vol 11 (20) ◽

pp. 12227-12234

Author(s):

Hisham S. M. Abd-Rabboh ◽

Abd El-Galil E. Amr ◽

Elsayed A. Elsayed ◽

Ahmed Y. A. Sayed ◽

Ayman H. Kamel

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Cost Effective ◽

Trace Level ◽

Ion Sensing ◽

Reduced Graphene ◽

Chemically Reduced Graphene Oxide ◽

Trace Level Determination ◽

Analytical Device

Robust, reliable and cost-effective paper-based analytical device for potentiometric pholcodine (opiate derivative drug) ion sensing has been prepared and characterized.

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Tuning the cationic ratio of Fe1CoxNiyP integrated on Vertically aligned reduced graphene oxide array via electroless plating as efficient self-supported bifunctional electrocatalyst for water splitting

Journal of Electrochemical Energy Conversion and Storage ◽

10.1115/1.4052533 ◽

2021 ◽

pp. 1-33

Author(s):

Kaiming Guo ◽

Firdoz Shaik ◽

Jine Yang ◽

Bin Jiang

Keyword(s):

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Water Splitting ◽

Electroless Plating ◽

Cost Effective ◽

Bifunctional Electrocatalyst ◽

Reduced Graphene ◽

Wide Ph Range ◽

Vertically Aligned ◽

Ph Range

Abstract Water splitting is considered as a potential sustainable and green technology for producing mass hydrogen and oxygen. A cost-effective self-supported stable electrocatalyst with excellent electrocatalytic performance in a wide pH range is greatly required for water splitting. This work reports on the synthesis and anchoring of Fe1CoxNiyP nanoparticles on vertically aligned reduced graphene oxide array (VrGO) via electroless plating. The catalytic activity of Fe1CoxNiyP nanoparticles is tuned finely by tailoring the cationic ratio of Co and Ni. Fe1Co2Ni1P/VrGO exhibits the lowest overpotential (58 and 110 mV) at 10 mA cm−2 and lowest tafel slope (31 and 33 mV dec−1) for hydrogen evolution reaction in 1.0 M KOH and 0.5 M H2SO4 respectively. Fe1Co1Ni2P/VrGO exhibits the lowest overpotential (173 mV) at 10 mA cm−2 with lowest tafel slope (47 mV dec-1) for oxygen evolution reaction. The enhanced performance of the electrocatalyst is attributed to improved electrical conductivity, synergistic effects and beneficial electronic states caused by the appropriate atomic ratio of Co and Ni in the bifunctional electrocatalyst. This study helps to explore the effect of variable cationic ratio in the cost-effective ternary iron group metal phosphides electrocatalysts to achieve enhanced electrocatalytic performance for water splitting in a wide pH range.

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