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Nanoporous graphene: High strength and flexibility ...

Nanoporous graphene: High strength and flexibility achieved. 06/24/2019. Excellent tensile strength and ductility have been realized in an ultralight, three-dimensional structure made of nanoporous graphene. This nanoporous, graphene-based structure has both high tensile strength and ductility.

Nanoporous Graphene with Single-Atom Nickel …

Single-atom nickel dopants anchored to three-dimensional nanoporous graphene can be used as catalysts of the hydrogen evolution reaction (HER) in acidic solutions. In contrast to conventional nickel-based catalysts and graphene, this material shows superior HER catalysis with a low overpotential of …

Nanoporous Atomically Thin Graphene Membranes …

Here, the fabrication of large-area (cm 2) nanoporous atomically thin membranes (NATMs) is reported, by transferring graphene synthesized using scalable chemical vapor deposition (CVD) to polycarbonate track-etched supports. After sealing defects introduced during transfer/handling by interfacial polymerization, a facile oxygen-plasma etch is ...

Stamp-sized graphene sheets riddled with holes could …

2021-1-2 · Combining their techniques, they were able to create sheets of nanoporous graphene, each measuring about 5 square centimeters. “To the best of our knowledge, so far this is the largest atomically thin nanoporous membrane made by direct formation of pores,” Kidambi says.

Water Desalination Using Nanoporous Single-Layer …

2daysbefore · A method for the desalination of water, the method comprising flowing salt water through a free-standing single-layer membrane of nanoporous graphene having a first planar side that makes contact with the salt water and an opposing second planar side from which desalinated water exits, wherein said membrane contains nanopores having a size of up to 1 nm, along with a substantial absence of ...

Nitrogen-doped nanoporous graphene induced by a …

Nitrogen-doped nanoporous graphene (NDNG) is a promising material for membrane separation, but it has not yet been tested for rare earth separation, and it is limited by multi-complex synthesis. Herein, we developed a one-step, facile, and scalable approach to synthesize NDNG with tunable pore size and controlled nitrogen content using ...

JI doctoral student uncovers new thermal transport ...

2020-3-13 · (a) The schematic of nanoporous graphene. (b) The workflow of the “two-step” search process based on genetic algorithm. (c) A comparison of optimization output and the overall time cost between the genetic algorithm enabled search method and manual search method.

(PDF) Nanoporous graphene materials

Nanoporous graphene (NPG) materials have been widely studied and exploited to open the band gap, increase the specific surface area and dispersibility, and/or improve the optical, catalytic and ...

Uniform nanoporous graphene sponge from natural ...

Uniform nanoporous graphene sponge from natural polysaccharides as a metal-free electrocatalyst for hydrogen generation J. Niu, A. Domenech-Carbó, A. Primo and H. Garcia, RSC Adv., 2019, 9, 99 DOI: 10.1039/C8RA08745H This article is licensed ...

Adsorptive mercaptan removal of liquid phase using ...

2018-12-15 · The satisfactory results indicated that nanoporous graphene can be used as a good carbon nanostructure sorbent in mercaptan removal. The process reduced the sulfur content from 300 ppm to less than 10 ppm which was the standard level in environmental regulations. The capacity for TBM removal was achieved at 4.4 gr S/gr adsorbent.

Adsorptive mercaptan removal of liquid phase using ...

A big step for nanoporous graphene provides a small …

2019-8-1 · But nanoporous graphene tends to tear easily when its area is more than a few square microns. Now Xiangfeng Duan (UCLA), Quan Yuan (Wuhan University and Hunan University in China), and colleagues have designed a centimeter-scale freestanding, mechanically robust nanoporous graphene membrane, shown in figure 1 , that filters salt and larger ions ...

Extraordinary tensile strength and ductility of scalable ...

RESULTS. Nanoporous graphene is synthesized by a nanoporous Ni (np-Ni)–based CVD method in which dealloyed np-Ni with 3D bicontinuous open nanoporosity is used as both a nanoporous template and a catalyst for graphene growth (22, 23).After completely removing the Ni substrates and supercritical drying, centimeter-sized freestanding nanoporous graphene samples can be achieved (Fig. 1, B and C).

[PDF] Water desalination across nanoporous graphene ...

2020-12-10 · We show that nanometer-scale pores in single-layer freestanding graphene can effectively filter NaCl salt from water. Using classical molecular dynamics, we report the desalination performance of such membranes as a function of pore size, chemical functionalization, and applied pressure. Our results indicate that the membrane's ability to prevent the salt passage depends critically on pore ...