A Simple Method for Cleaning Graphene Surfaces with an Electrostatic Force

Choi, Won Jin; Chung, Yoon Jang; Park, Serin; Yang, Cheol‐Soo; Lee, Young Kuk; An, Ki‐Seok; Lee, You-Seop; Lee, Jun Young

doi:10.1002/adma.201303199

Cited by 27 publications

(14 citation statements)

References 40 publications

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“…S3 ). The G and 2D bands of GF were observed at 1580 and 2670 cm −1 , respectively 20 . Upon coupling of DdIC chromophore to GF, the G and 2D bands in GFPC 1 shifted to 1569 and 2686 cm −1 , respectively.…”

Section: Resultsmentioning

confidence: 96%

Highly Improved Solar Energy Harvesting for Fuel Production from CO2 by a Newly Designed Graphene Film Photocatalyst

Yadav

Lee

Kumar

et al. 2018

Sci Rep

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Our growing energy demands must be met by a sustainable supply with reduced carbon intensity. One of the most exciting prospects to realize this goal is the photocatalyst-biocatalyst integrated artificial photosynthesis system which affords solar fuel/chemicals in high selectivity from CO2. Graphene based photocatalysts are highly suitable for the system, but their industrial scale use requires immobilization for improved separation and recovery of the photocatalyst. Therefore for practical purposes, design and fabrication of film type graphene photocatalyst with higher solar energy conversion efficiency is an absolute necessity. As a means to achieve this, we report herein the successful development of a new type of flexible graphene film photocatalyst that leads to >225% rise in visible light harvesting efficiency of the resultant photocatalyst-biocatalyst integrated artificial photosynthesis system for highly selective solar fuel production from CO2 compared to conventional spin coated graphene film photocatalyst. It is an important step towards the design of a new pool of graphene film based photocatalysts for artificial photosynthesis of solar fuels from CO2.

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Section: Resultsmentioning

confidence: 96%

Highly Improved Solar Energy Harvesting for Fuel Production from CO2 by a Newly Designed Graphene Film Photocatalyst

Yadav

Lee

Kumar

et al. 2018

Sci Rep

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“…The need to avoid aggressive post-processing cleaning methods has motivated the search for alternative graphene surface cleaning methods. We recently showed that electrostatic force assisted cleaning was an efficient approach for minimizing the PMMA residues of transferred CVD, providing a first step towards residue-free processing of large scale graphene films [21]. One can therefore consider that several approaches to ensure the condition (1) are already proposed in the literature.…”

Section: Introductionmentioning

confidence: 99%

Room temperature dry processing of patterned CVD graphene devices

Mahmood

Yang

Dayen

et al. 2015

Carbon

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“…Surface contamination of CVD‐derived graphene films has three main origins: intrinsic contamination that occurs during the CVD growth process (Note S1, Supporting Information), polymer residues introduced by transfer processes from the growth substrate to the target substrate, and airborne contaminants . Many attempts have been made to remove surface contaminants from graphene via annealing, plasma treatment, and mechanical cleaning, which have been proven to be effective. However, only emphasizing the elimination of transfer‐related contamination, these postgrowth routines cannot thoroughly solve the issue of surface contamination.…”

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confidence: 99%

A Force‐Engineered Lint Roller for Superclean Graphene

et al. 2019

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Contamination is a major concern in surface and interface technologies. Given that graphene is a 2D monolayer material with an extremely large surface area, surface contamination may seriously degrade its intrinsic properties and strongly hinder its applicability in surface and interfacial regions. However, large‐scale and facile treatment methods for producing clean graphene films that preserve its excellent properties have not yet been achieved. Herein, an efficient postgrowth treatment method for selectively removing surface contamination to achieve a large‐area superclean graphene surface is reported. The as‐obtained superclean graphene, with surface cleanness exceeding 99%, can be transferred to dielectric substrates with significantly reduced polymer residues, yielding ultrahigh carrier mobility of 500 000 cm2 V−1 s−1 and low contact resistance of 118 Ω µm. The successful removal of contamination is enabled by the strong adhesive force of the activated‐carbon‐based lint roller on graphene contaminants.

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A Simple Method for Cleaning Graphene Surfaces with an Electrostatic Force

Cited by 27 publications

References 40 publications

Highly Improved Solar Energy Harvesting for Fuel Production from CO2 by a Newly Designed Graphene Film Photocatalyst

Highly Improved Solar Energy Harvesting for Fuel Production from CO2 by a Newly Designed Graphene Film Photocatalyst

Room temperature dry processing of patterned CVD graphene devices

A Force‐Engineered Lint Roller for Superclean Graphene

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