First report on graphene oxide free, ultrafast fabrication of reduced graphene oxide on paper via visible light laser irradiation

Kumar, Pavar Sai; Goel, Sanket

doi:10.1016/j.diamond.2021.108680

Cited by 12 publications

(14 citation statements)

References 41 publications

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“…The XRD spectra of the in situ formed composite, as shown in figure 4 These results are highly consistent with our previous report and literature works [3,26].…”

Section: Structural Electrical and Morphological Analysis Of Cc-rgosupporting

confidence: 91%

“…The G1 substrate was lased at different speeds, power and z-axis focus for the designs. Lasing power and speed were considered as 15% (0.42 W) and 100% (120 mm S −1 ) according to the parameters involved in the previously published paper by our team [26]. During the irradiation of the blue laser on the CCl coated G1 paper substrate at the optimized power and speed, it was found that the closely packed cellulose of paper coated with the CoCl 2 was converted to the porous Co, Co 3 O 4 decorated to rGO forming the composite.…”

Section: Fabrication Of Cc-rgo Composites By G1 Papermentioning

confidence: 99%

“…The concentration of metal salt used during the synthesis of metal-graphene shows an impact on the sheet resistance and conductivity of the composite material formed [49]. Because of the oxygen content, conductivity of the composite was reduced, compared to the rGO [26]. Generally, higher concentration of metal salt solution causes less sheet resistance and high conductivity because of the higher density of metal particles on the graphene [50].…”

Section: Structural Electrical and Morphological Analysis Of Cc-rgomentioning

confidence: 99%

“…Further, studies are performed to synthesize rGO because of its low cost and easier manufacturing process. Recently, it has been proven that exposure of the grade 1 filter paper (G1) to the blue diode laser (450 nm), leads to the formation of porous rGO [26]. The rGO was formed within 3 min 30 s on the 10 mm × 10 mm area of the paper with electrical conductivity of 1708 S m −1 and least sheet resistance showing the mesoporous granular structure.…”

Section: Introductionmentioning

confidence: 99%

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Laser-induced in situ synthesis of nano-composite Co–Co₃O₄–rGO on paper: miniaturized biosensor for alkaline phosphatase detection

2023

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Recent progress in the in situ synthesise of various nanomaterials has gained tremendous interest and wide applications in various fields. For the first time to the best of our knowledge, this work reports a methodology of ultra-fast in situ synthesis of cobalt–cobalt oxide-reduced graphene oxide (Co−Co3O4−rGO (CC–rGO)) composite by laser ablation. The photothermal reduction technique was leveraged to develop the CC–rGO. For this, a low-cost 450 nm blue diode laser was irradiated onto a grade 1 filter paper in the presence of cobalt ions readily patterns the carbon matrix of paper to the composite material. Moreover, the variation of cobalt concentrations from 0.1–0.5 M led to structural and morphological changes. Standard techniques were adopted for thorough characterizations of developed sensor material for conductivity analysis, specific surface area, crystal-structural information, surface morphology, and chemical composition. The observed results were highly promoting towards the electrochemical sensing applications. Further, the developed sensor was found to be highly selective toward detecting a vital bio analyte alkaline phosphatase (ALP). The sensors performance was highly significant in the linear range of 10–800 mU l−1 with a detection limit of 10.13 mU l−1. The sensors applicability was further validated in actual human serum samples via a recovery-based approach. In the future, the developed in situ material methodology can begin a rapid composite material synthesis at a larger scale.

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“…The XRD spectra of the in situ formed composite, as shown in figure 4 These results are highly consistent with our previous report and literature works [3,26].…”

Section: Structural Electrical and Morphological Analysis Of Cc-rgosupporting

confidence: 91%

Section: Fabrication Of Cc-rgo Composites By G1 Papermentioning

confidence: 99%

Section: Structural Electrical and Morphological Analysis Of Cc-rgomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Laser-induced in situ synthesis of nano-composite Co–Co₃O₄–rGO on paper: miniaturized biosensor for alkaline phosphatase detection

2023

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“…However, laser dosing is one of the most scalable, robust methods for fast, flexible, and energy-efficient processes through controlled exposure of highly concentrated energy levels, creating localized heat zones that trigger photoactivated thermal and chemical interactions [15]. Here, different Laser ablated materials have been utilized for CRET analysis from our previous works includes, Laser induced reduced graphene oxide (rGO) [16], laser induced graphene (LIG) [17][18][19], and flash graphene (FG) [20]. The surface of graphene-based materials holding the carboxyl groups on their edges and hydroxyl/epoxy groups over the basal plane in their π-conjugated planar structure are responsible for such CL quenching [21].…”

Section: Introductionmentioning

confidence: 99%

First report on onsite temperature based recovery of quenched chemiluminescence signal from graphenized μPADs: validation by catechins radical scavenging

Kumar¹,

Advincula²,

Goel³

2022

Nano Futures

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Graphene-based materials are found to be the excellent acceptors of chemiluminescence resonance energy transfer (CRET) phenomenon. Due to the presence of π-conjugated planar structure, these materials reported to quench the chemiluminescence (CL) signal. Based on this fact, herein, for the first time the recovery of quenched CL signal from different graphene-based materials is successfully obtained through the catalytic activity of onsite temperature. The maximum recovery of quenched signal at optimum temperature of 70 ℃ was found to be 1440 % from the 10 mg/ml reduced graphene oxide paper analytical devices (rGO-PADs), leaving the recovery of Flash graphene (FG) and Laser Induced graphene materials (LIG) as 895 %, 521 % respectively for the same conditions via generation of π-conjugated carbon radicals. Catechin, an antioxidant, was analyzed from 0.1 nM to 500 nM to interpret the generation of carbon radicals from graphenized materials. The proposed smartphone enabled onsite heating recovery model was validated with the lower limit of 94 pM (27.3 pg/ml) of catechin concentration without any advanced photodiodes or instrumentation. The validation was performed in real samples of green tea (GT1 and GT2). This method of CL recovery can be a future model of indicating the purity of graphene-based materials without use of advanced instrumentations.

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Graphitization on Natural Biopolymer Shellac: Toward Substrate Independent Coatings and a Recyclable Flexible Heater

Pavar,

Madapusi,

Mitra

et al. 2024

Adv Materials Inter

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Extraction of graphene and graphene derivatives from non‐toxic, biocompatible, eco‐friendly, and biodegradable resources with a one‐step production process is a challenge. This work is the first attempt at the one‐step graphenization of Shellac, a biopolymer derived from natural resources, achieved using direct laser patterning. Interestingly, the process highlights substrate independence by producing reduced graphene oxide (rGO) from multiple substrates, such as glass slides, Copper (Cu) adhesive tape, and overhead projector (OHP) plastic films. The produced rGO is fully characterized, and it is found that the sheet resistance is as low as 5.4., 24.65, and 8.4 Ω Sq−1. on the glass slide, OHP plastic sheet, and Cu adhesive, respectively. Moreover, developing various logos on resin‐coated ceramic tiles demonstrated the possibility of patterning desired conductive rGO patterns. Furthermore, a recyclable flexible rGO/Shellac heater is fabricated to validate its electrothermal performance (117.3 °C at 9.5 V) with foldable stability. The proposed one‐step substrate independent two‐material fabrication will revolutionize the process, potentially replacing conventional toxic routes of graphene production.

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First report on graphene oxide free, ultrafast fabrication of reduced graphene oxide on paper via visible light laser irradiation

Cited by 12 publications

References 41 publications

Laser-induced in situ synthesis of nano-composite Co–Co₃O₄–rGO on paper: miniaturized biosensor for alkaline phosphatase detection

Laser-induced in situ synthesis of nano-composite Co–Co₃O₄–rGO on paper: miniaturized biosensor for alkaline phosphatase detection

First report on onsite temperature based recovery of quenched chemiluminescence signal from graphenized μPADs: validation by catechins radical scavenging

Graphitization on Natural Biopolymer Shellac: Toward Substrate Independent Coatings and a Recyclable Flexible Heater

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First report on graphene oxide free, ultrafast fabrication of reduced graphene oxide on paper via visible light laser irradiation

Cited by 12 publications

References 41 publications

Laser-induced in situ synthesis of nano-composite Co–Co3O4–rGO on paper: miniaturized biosensor for alkaline phosphatase detection

Laser-induced in situ synthesis of nano-composite Co–Co3O4–rGO on paper: miniaturized biosensor for alkaline phosphatase detection

First report on onsite temperature based recovery of quenched chemiluminescence signal from graphenized μPADs: validation by catechins radical scavenging

Graphitization on Natural Biopolymer Shellac: Toward Substrate Independent Coatings and a Recyclable Flexible Heater

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Product

Resources

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Laser-induced in situ synthesis of nano-composite Co–Co₃O₄–rGO on paper: miniaturized biosensor for alkaline phosphatase detection

Laser-induced in situ synthesis of nano-composite Co–Co₃O₄–rGO on paper: miniaturized biosensor for alkaline phosphatase detection