Effects of various vitamin C amounts on the green synthesis of reduced graphene oxide

Mindivan, Ferda; Göktaş, Meryem

doi:10.3139/120.111416

Cited by 11 publications

(10 citation statements)

References 32 publications

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“…GO was prepared from natural graphite (powder ~45 μm, Aldrich) by the modified Hummers method 16,17 and GO reduced with vitamin C to RGOC according to literature 18 . The detailed information about the production process of UHMWPE/RGOC biocomposites were described in previous literature 19 .…”

Section: Methodsmentioning

confidence: 99%

Tribo‐material based on a UHMWPE/RGOC biocomposite for using in artificial joints

Mindivan

Çolak

2021

J of Applied Polymer Sci

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Reduced graphene oxide (RGOC) filler that was green synthesized by vitamin C had been included in the ultrahigh molecular weight polyethylene (UHMWPE) matrix to produce biocomposite possessing improved properties especially against wear. The biocomposites filled with different loading (0.1, 0.3, 1.0, and 2.0 wt%) of RGOC was produced by a method of liquid phase ultrasonic mixing and then hot press molding. The structural analysis results of biocomposites showed that RGOC well‐dispersed in polymer matrix and confirmed that there was interaction between the RGOC‐UHMWPE. The biocomposite containing 2.0 wt% RGOC (UHMWPE/RGOC‐2) gave the maximum microhardness and the value increased by 22. 5% compared with unfilled polymer. At the same RGOC content, the biocomposite had the highest thermal stability with residue content at 2.42%. The wear and friction behavior of biocomposites were carried out in a reciprocating friction testing machine under distilled water lubricating conditions. The UHMWPE/RGOC‐2 biocomposite had the lowest friction coefficient value (0.034) and the wear rate of the biocomposite decreased by 44%, compared with that of unfilled UHMWPE. Furthermore, fatigue wear tracks were significantly reduced. This study suggests the use of this composite that had excellent tribological behavior as biomaterial instead of UHMWPE.

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Section: Methodsmentioning

confidence: 99%

Tribo‐material based on a UHMWPE/RGOC biocomposite for using in artificial joints

Mindivan

Çolak

2021

J of Applied Polymer Sci

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“…Green synthesis of nanomaterials has several advantages, i.e., simple process, low cost, less time and energy synthesis consumption, nontoxic, and environmentally benign . Green synthesis is more efficient, compared to chemical synthesis, in terms of the toxicity of chemical species presented in nanomaterial products. − Nanometer-sized iron oxide is one of few inorganic materials that can easily be synthesized and developed using green synthesis through biological substances. − Several biological substances such as leaf or plant extract, − bacteria, − fungi, − vitamins, − protein, − etc. were found compatible to act as reducing, capping, stabilizing, and fabricating agents in green synthesis of various materials, including nanometer-sized iron oxides .…”

Section: Advance Fabrication Of Nanometer-sized Iron Oxides From Natu...mentioning

confidence: 99%

All Shapes and Phases of Nanometer-Sized Iron Oxides Made from Natural Sources and Waste Material via Green Synthesis Approach: A Review

Amrillah

2022

Crystal Growth & Design

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Iron oxides are old but gold. Stacks of review articles have been published with regard to sounding the magnificence of iron oxides for many applications. Nevertheless, no existing review papers discuss more specifics on how to fabricate nanometer-sized iron oxides, which, in fact, we can obtain them directly from natural sources and wastes via green technology. Direct synthesis of nanometer-sized iron oxides from natural sources and wastes could simply make them less expensive, and, of course, significantly decrease the energy requirement in the synthesis process, lower time synthesis consumption, and be environmentally benign. Here, we compile and synthesize all information on nanometer-sized iron oxides, starting from their phase diversity and their low-dimensional forms such as in zero-, one-, two-, and three-dimensional (0D, 1D, 2D, and 3D, respectively) shapes. Furthermore, the synthesis of nanometer-sized iron oxides from natural sources and waste materials via green synthesis is explained comprehensively, followed by the elucidation of the prospect and challenges of each synthesis method. Lastly, the recent applications and potential commercialization of nanometer-sized iron oxides synthesized from natural sources and waste materials from the point of view of green technology are also listed in this review article.

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“…rGOH için; 1450 cm-1'deki zirve, oksitlenmemiş grafit alanların iskelet titreşiminden kaynaklanmaktadır [17]. 3300-3445 cm -1 'deki tepe noktası ise OH gerilme titreşimlerinden kaynaklanan yoğun bir tepe noktasıdır [18,19] ve 1800-1000 cm -1 arasında çok daha düşük yoğunluktaki diğer tepe noktaları görülmektedir. Bu durum FT-IR verilerinde, hidrotermal indirgemeden sonra artık oksijen içeren fonksiyonel grupların hidroksil ve epoksi grupları olarak görülmektedir [20].…”

Section: Kompozit Elektrotun Hazırlanmasıunclassified

Süperkapasitör performansını artırmak için grafitik karbon nitrür /grafen hibrit yapılarının kullanılması

Sert

Harputlu

2022

NÖHÜ Müh. Bilim. Derg.

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Uygun morfolojiye ve mükemmel iletkenliğe sahip yüksek verimli, düşük maliyetli hibrit nanoyapılar tasarlamak, elektrokimyasal depolama cihazlarında kullanılan elektrotlar için umut vericidir. Bu çalışma, süperkapasitör (SK) uygulamaları için grafitik karbon nitrür (g-C3N4) ve indirgenmiş grafen oksit hidrojel (rGOH) yapılarından oluşan üç boyutlu (3B) hibrit yapının üretimi ve elektrokimyasal çalışmalardan elde edilen sonuçları içermektedir. Bilindiği üzere, süperkapasitörde spesifik kapasitans miktarının artırılması yapıda kullanılan elektrot-elektrolit arasındaki temas yüzeyi ile doğru orantılıdır. Bu yüzden, rGOH yapısının yüksek yüzey alanı ve termal stabiliteye sahip olması, g-C3N4‘ün de süperkapasitörlerde elektrokimyasal aktiviteyi arttırmasından dolayı, mevcut yapılar bir araya getirilerek elde edilen elektrotun spesifik kapasitans değeri ölçülmüştür. Süperkapasitör olarak kullanılacak bu elektrotun üretilmesiyle, yüksek spesifik kapasitans değeri elde edilmiştir. Elektrokimyasal çalışmalar sonucunda, g-C3N4@rGOH hibrit yapısının 5 mVs-1 tarama hızında 157.4 F/g yüksek kapasitans değeri elde edilmiştir. Ayrıca 1000 döngüde %112’lik benzersiz bir döngüsel stabilite performansı sergilemiştir.

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Effects of various vitamin C amounts on the green synthesis of reduced graphene oxide

Cited by 11 publications

References 32 publications

Tribo‐material based on a UHMWPE/RGOC biocomposite for using in artificial joints

Tribo‐material based on a UHMWPE/RGOC biocomposite for using in artificial joints

All Shapes and Phases of Nanometer-Sized Iron Oxides Made from Natural Sources and Waste Material via Green Synthesis Approach: A Review

Süperkapasitör performansını artırmak için grafitik karbon nitrür /grafen hibrit yapılarının kullanılması

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