Graphene is not alone

doi:10.1038/nnano.2012.205

Cited by 30 publications

(7 citation statements)

References 12 publications

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“…A wide variety of other materials can be fashioned in 2D geometries, including transition-metal dichalcogenides, transition-metal carbides/carbonitrides, and boron nitride. Dervin et al have published a recent review for further reading on the topic .…”

Section: Carbon and Similar Nanostructuresmentioning

confidence: 99%

Next-Generation Nanoporous Materials: Progress and Prospects for Reverse Osmosis and Nanofiltration

Stevens¹,

Shu²,

Reichert³

et al. 2017

Ind. Eng. Chem. Res.

101

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Reverse osmosis and nanofiltration are highly adopted, growing technologies that are used to remove salts and other small molecules in water treatment. Both of these technologies primarily use cross-linked polyamide membranes to achieve the desired separation. Many novel nanoporous materials are being developed as alternatives or complements to polyamides, including graphene, graphene oxide, block copolymers, liquid crystals, aquaporins, and other biologically inspired molecular channels. This article evaluates each of these technologies by (i) reviewing the current progress in each area, (ii) identifying key needs for immediate research, and (iii) evaluating considerations for commercial development. The economic benefits of these technologies in reverse osmosis applications are further reviewed to help frame the expected commercial value proposition.

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Section: Carbon and Similar Nanostructuresmentioning

confidence: 99%

Next-Generation Nanoporous Materials: Progress and Prospects for Reverse Osmosis and Nanofiltration

Stevens¹,

Shu²,

Reichert³

et al. 2017

Ind. Eng. Chem. Res.

101

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“…Molybdenum disulfide (MoS 2 ) has generated significant interest in the past several years as limitations of graphene become apparent due to its zero bandgap. − Weak interlayer van der Waals forces allow MoS 2 to be easily exfoliated to form atomic layers which, like graphene, can be used in electronic and optoelectronic devices for environmental, biological, and clinical applications. − MoS 2 and other 2D transition metal dichalcogenides (TMDCs) such as MoSe 2 , WS 2 , and WSe 2 are semiconductors that have an intrinsic bandgap which enhances device sensitivity and allows for fabrication of unique field-effect transistors (FETs), biosensors, solar cells, and light-emitting diodes (LEDs). − Additionally, the atomic thinness of TMDCs allow for flexible devices not possible with traditional organic semiconductors. − Sarkar et al demonstrated that MoS 2 -based FET biosensors are over 74 times more sensitive than a graphene-based device and can be utilized for ultrasensitive protein sensing at extremely low concentrations of 100 femtomolar . Moreover, Lee et al demonstrated efficacy of a MoS 2 biosensor for detection of prostate antigens in order to diagnose prostate cancer.…”

Section: Introductionmentioning

confidence: 99%

Understanding the Intrinsic Water Wettability of Molybdenum Disulfide (MoS₂)

Kozbial¹,

Gong²,

et al. 2015

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2D semiconductors allow for unique and ultrasensitive devices to be fabricated for applications ranging from clinical diagnosis instruments to low-energy light-emitting diodes (LEDs). Graphene has championed research in this field since it was first fabricated; however, its zero bandgap creates many challenges. Transition metal dichalcogenides (TMDCs), e.g., MoS2, have a direct bandgap which alleviates the challenge of creating a bandgap in graphene-based devices. Water wettability of MoS2 is critical to device fabrication/performance and MoS2 has been believed to be hydrophobic. Herein, we report that water contact angle (WCA) of freshly exfoliated MoS2 shows temporal evolution with an intrinsic WCA of 69.0 ± 3.8° that increases to 89.0 ± 3.1° after 1 day exposure to ambient air. ATR-FTIR and ellipsometry show that the fresh, intrinsically mildly hydrophilic MoS2 surface adsorbs hydrocarbons from ambient air and thus becomes hydrophobic.

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“…Two-dimensional (2D) semiconductors − have been widely studied due to their unique layered structure and rich properties. Among the various 2D materials, transition metal dichalcogenides (TMDCs) such as MoS 2 and WS 2 have been intensively studied due to their compelling thickness-dependent electronic band structure.…”

Section: Introductionmentioning

confidence: 99%

Realizing Stable p-Type Transporting in Two-Dimensional WS₂ Films

Cao

Dai

et al. 2017

ACS Appl. Mater. Interfaces

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Two-dimensional (2D) semiconductors have become promising candidates for nanoelectronics applications due to their unique layered structure and rich physical properties. However, the significant lack of reproducible p-type doping methods that can avoid the instability induced by the widely used charge transfer doping method greatly limits the applications of these semiconductors in complementary metal-oxide-semiconductor (CMOS) integrated digital circuits. This work presents a new scheme to realize stable p-type doping for WS with excellent layer controllability, wafer-level uniformity, and high reproducibility at the same time. The p-type WS was produced by introducing substitutional doping of sulfur with nitrogen atoms during the sulfurization of WON film. Nitrogen atoms acted as acceptors moving the Fermi level of WS toward the valance band. Both experimental and theoretical investigations were designed to study the physical properties of the films fabricated. The WS based field-effect transistors exhibited a well-defined p-type behavior with a large on/off current ratio of ∼10 and a high hole mobility of ∼18.8 cm V s. This opens up a promising method to realize stable p-type doping of 2D materials, which is very attractive for future large-scale 2D CMOS device applications.

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Graphene is not alone

Cited by 30 publications

References 12 publications

Next-Generation Nanoporous Materials: Progress and Prospects for Reverse Osmosis and Nanofiltration

Next-Generation Nanoporous Materials: Progress and Prospects for Reverse Osmosis and Nanofiltration

Understanding the Intrinsic Water Wettability of Molybdenum Disulfide (MoS₂)

Realizing Stable p-Type Transporting in Two-Dimensional WS₂ Films

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Graphene is not alone

Cited by 30 publications

References 12 publications

Next-Generation Nanoporous Materials: Progress and Prospects for Reverse Osmosis and Nanofiltration

Next-Generation Nanoporous Materials: Progress and Prospects for Reverse Osmosis and Nanofiltration

Understanding the Intrinsic Water Wettability of Molybdenum Disulfide (MoS2)

Realizing Stable p-Type Transporting in Two-Dimensional WS2 Films

Contact Info

Product

Resources

About

Understanding the Intrinsic Water Wettability of Molybdenum Disulfide (MoS₂)

Realizing Stable p-Type Transporting in Two-Dimensional WS₂ Films