Transparent, Conductive, and Printable Composites Consisting of TEMPO-Oxidized Nanocellulose and Carbon Nanotube

Koga, Hirotaka; Saito, Tsuguyuki; Kitaoka, Takuya; Nogi, Masaya; Suganuma, Katsuaki; Isogai, Akira

doi:10.1021/bm400075f

Cited by 266 publications

(186 citation statements)

References 52 publications

(127 reference statements)

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“…An aqueous suspension of single-walled CNTs that had been treated with nitric acid (4-5 nm width, 0.5-1.5 mm length and COOH content of 3-6 wt.%; Aldrich, Ltd., St Louis, MO, USA) was also prepared according to a previous paper. 17 The PET films (G2, 50 mm thick, Teijin DuPont Films Japan, Ltd., Tokyo, Japan) were treated at 150 V and 10 mA for 30 s with a plasma etching device (AP-T02-L, Sekisui Chemical Co., Ltd., Osaka, Japan) to improve their wettability before use.…”

Section: Experimental Procedures Materialsmentioning

confidence: 99%

“…5,8,9 Silver nanowires (AgNWs) are among the most promising candidates because of their high optical transparency and electrical conductivity. [10][11][12][13] Carbon nanotubes (CNTs) have also attracted considerable attention because of their excellent chemical stability and mechanical flexibility, [14][15][16][17] although their electrical resistance is relatively high. Wet-coating processes have been widely used for deposition of these conductive materials on plastic films because of their advantages in large-area and lowtemperature production.…”

Section: Introductionmentioning

confidence: 99%

“…Wet-coating processes have been widely used for deposition of these conductive materials on plastic films because of their advantages in large-area and lowtemperature production. For example, these transparent conductive films have been prepared by drop coating, 17,18 bar coating 13,19,20 and spin coating 21,22 of AgNW or CNT dispersions on plastic films.…”

Section: Introductionmentioning

confidence: 99%

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Uniformly connected conductive networks on cellulose nanofiber paper for transparent paper electronics

et al. 2014

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We demonstrate the fabrication of highly transparent conductive networks on a cellulose nanofiber paper, called cellulose nanopaper. Uniform coating of the conductive nanomaterials, such as silver nanowires (AgNWs) and carbon nanotubes, is achieved by simple filtration of their aqueous dispersions through the cellulose nanopaper, which acts as both filter and transparent flexible substrate. The as-prepared AgNW networks on the nanopaper offer sheet resistance of 12 X sq. À1 with optical transparency of 88%, which is up to 75 times lower than the sheet resistance on a polyethylene terephthalate film prepared by conventional coating processes. These results indicate that the 'filtration coating' provides uniformly connected conductive networks because of drainage in the perpendicular direction through paper-specific nanopores, whereas conventional coating processes inevitably cause self-aggregation and uneven distribution of the conductive nanomaterials because of the hard-to-control drying process, as indicated by the well-known coffee-ring effect. Furthermore, the conductive networks are embedded in the surface layer of the nanopaper, showing strong adhesion to the nanopaper substrate and providing foldability with negligible changes in electrical conductivity. This filtration process is thus expected to offer an effective coating approach for various conductive materials, and the resulting transparent conductive nanopaper is a promising material for future paper electronics.

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Section: Experimental Procedures Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Uniformly connected conductive networks on cellulose nanofiber paper for transparent paper electronics

et al. 2014

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“…[20][21][22] The water-soluble cellulose can unbundle CNTs gently without destroying their long chains. A possible mechanism of CNT isolation from bundles is that the surfactant forms gaps or spaces at the bundle end and the adsorbed surfactant diffuses into the space along the bundle length.…”

Section: Effectiveness Of Long-length Cntmentioning

confidence: 99%

Selective Determination of Nicotinamide Adenine Dinucleotide in the Presence of Ascorbic Acid and Uric Acid at a Long-Length Carbon Nanotube Electrode

Hikichi

Muguruma

Inoue³

et al. 2017

Electrochemistry

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Selective electrochemical determination of nicotinamide adenine dinucleotide (NADH) in the presence of ascorbic acid (AA) and uric acid (UA) at a long-length multi-walled carbon nanotube (CNT) electrode is presented. We demonstrate the effectiveness of CNT length toward the electrochemical response due to oxidation of NADH. The long-length CNT is 200 µm (average), whereas normal-length CNT as a comparison is 1 µm (average). In differential pulse voltammetry, the current peaks due to NADH, AA, and UA at long-length CNT electrodes were more distinct than those at normal-length electrode. Electrochemical impedance spectroscopy measurements suggested that the long-length CNT electrode formed a better electron transfer network than the normal-length electrode. The performance of selective determination of NADH are concentration range of 0.030-2.0 mM in the presence of 1.2 mM AA, and 0.059-2.0 mM in the presence of 0.12 mM UA.

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“…In their procedure, the cellulose fibre suspension is oxidised by TEMPO with NaClO as the primary oxidant and NaBr as an additional catalyst at a pH of 10 to 11. TEMPO-oxidised CNFs have become one of the most industrially and scientifically promising CNF grades and have been proposed for use in a variety of applications (Fukuzumi et al 2009;Fujisawa et al 2012;Koga et al 2013;Rebouillat and Pla 2013;Hänninen et al 2014;Trygg et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Chemical Recovery in TEMPO Oxidation

Kuutti¹,

Pajari²,

Rovio³

et al. 2016

BioResources

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To be regarded as environmentally friendly and economical, an industrial process using 2,2,6,6-tetramethylpiperidine 1-oxyl (TEMPO) oxidation requires recycling and/or recovery of chemicals. In this work, hypochlorite recycling via electrolysis was evaluated and potential means for TEMPO recovery were explored. The most important variable affecting electrochemical hypochlorite conversion was the concentration of sodium chloride in the feed solution. With 30 g/L NaCl salt, a sufficient hypochlorite concentration of 0.8% could be obtained for pulp oxidation of up to 5% consistency. The regeneration of hypochlorite in the treated TEMPO solution was possible by electrolysis and further oxidation performed with only a small addition of make-up chemicals. During electrolysis, some TEMPO degradation took place; therefore, recovery of TEMPO should be done prior to electrolysis. For the recovery of TEMPO, solid phase extraction (SPE) was tested. The best recovery of TEMPO was obtained using a combination of hydrophobic SPE resin material and distillation (yields between 52% and 87%).

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Transparent, Conductive, and Printable Composites Consisting of TEMPO-Oxidized Nanocellulose and Carbon Nanotube

Cited by 266 publications

References 52 publications

Uniformly connected conductive networks on cellulose nanofiber paper for transparent paper electronics

Uniformly connected conductive networks on cellulose nanofiber paper for transparent paper electronics

Selective Determination of Nicotinamide Adenine Dinucleotide in the Presence of Ascorbic Acid and Uric Acid at a Long-Length Carbon Nanotube Electrode

Chemical Recovery in TEMPO Oxidation

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