Mechanism of graphene oxide laser reduction at ambient conditions: Experimental and ReaxFF study

Orekhov, Nikita; Bondareva, Julia; Potapov, Denis O.; Dyakonov, Pavel V.; Dubinin, Oleg N.; Tarkhov, M. A.; Diudbin, G.D.; Маслаков, К. И.; Logunov, Mikhail; Kvashnin, Dmitry G.; Evlashin, Stanislav A.

doi:10.1016/j.carbon.2022.02.018

Cited by 22 publications

(20 citation statements)

References 74 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under certain pulse regimes, GO transforms into rGO. 244 The application of B-and N-codoped rGO (BN-GN) as an electrolyte electrochemical degradation of paracetamol was described in this study. DFT calculations, characterization, quenching tests, and electron paramagnetic resonance analyses were utilized to investigate the reaction process, which focused on the catalyst surface at the atomic level and dominating radical species created by the reaction.…”

Section: Computational Studiesmentioning

confidence: 99%

See 1 more Smart Citation

An Update on Graphene Oxide: Applications and Toxicity

et al. 2022

View full text Add to dashboard Cite

Graphene oxide (GO) has attracted much attention in the past few years because of its interesting and promising electrical, thermal, mechanical, and structural properties. These properties can be altered, as GO can be readily functionalized. Brodie synthesized the GO in 1859 by reacting graphite with KClO 3 in the presence of fuming HNO 3 ; the reaction took 3−4 days to complete at 333 K. Since then, various schemes have been developed to reduce the reaction time, increase the yield, and minimize the release of toxic byproducts (NO 2 and N 2 O 4 ). The modified Hummers method has been widely accepted to produce GO in bulk. Due to its versatile characteristics, GO has a wide range of applications in different fields like tissue engineering, photocatalysis, catalysis, and biomedical applications. Its porous structure is considered appropriate for tissue and organ regeneration. Various branches of tissue engineering are being extensively explored, such as bone, neural, dentistry, cartilage, and skin tissue engineering. The band gap of GO can be easily tuned, and therefore it has a wide range of photocatalytic applications as well: the degradation of organic contaminants, hydrogen generation, and CO 2 reduction, etc. GO could be a potential nanocarrier in drug delivery systems, gene delivery, biological sensing, and antibacterial nanocomposites due to its large surface area and high density, as it is highly functionalized with oxygen-containing functional groups. GO or its composites are found to be toxic to various biological species and as also discussed in this review. It has been observed that superoxide dismutase (SOD) and reactive oxygen species (ROS) levels gradually increase over a period after GO is introduced in the biological systems. Hence, GO at specific concentrations is toxic for various species like earthworms, Chironomus riparius, Zebrafish, etc.

show abstract

Section: Computational Studiesmentioning

confidence: 99%

“…This surprising outcome is the consequence of two different processes: (i) combustion on extremely defective regions of GO and (ii) defective reduction in the rest of the material. Under certain pulse regimes, GO transforms into rGO …”

Section: Computational Studiesmentioning

confidence: 99%

An Update on Graphene Oxide: Applications and Toxicity

et al. 2022

View full text Add to dashboard Cite

show abstract

“…This may be because the formation of highquality rGO films needs to satisfy a sufficiently high temperature, e.g., 3800 K at ambient conditions as demonstrated by reactive molecular dynamics. 123 Regarding the CW mid-infrared CO 2 laser, L-shaped LrGO films with vertical alignment can be realized (Figure 9L−N). 128 From the Raman spectra data, we can obtain that the L-shaped LrGO films possess the features of few defects (small I D /I G value) and single-layer (ultrahigh I 2D /I G value).…”

Section: Effect Of Laser Spotmentioning

confidence: 99%

“…Among them, laser irradiation of GO film, one of intense pulse light exposure, not only has the advantages of efficiency, cost, and environment friendliness but also enables selective photothermal reduction of GO into a high-resolution interdigital pattern, thus drawing widespread attention. Currently, a variety of laser sources − ranging from pulsed to CW, deep-ultraviolet to mid-infrared have been employed for the preparation of laser-reduced GO (LrGO) films. In 2011, Gao et al demonstrated the scalable fabrication of in-plane interdigital LrGO electrodes by mid-infrared CO 2 laser reduction of GO films.…”

Section: Laser Processing Techniques For In-plane Mscsmentioning

confidence: 99%

“…Moreover, higher laser intensity in the center of the reduction spot is beneficial to the reduction of GO. This may be because the formation of high-quality rGO films needs to satisfy a sufficiently high temperature, e.g., 3800 K at ambient conditions as demonstrated by reactive molecular dynamics . Regarding the CW mid-infrared CO 2 laser, L-shaped LrGO films with vertical alignment can be realized (Figure L–N) .…”

Section: Laser Processing Techniques For In-plane Mscsmentioning

confidence: 99%

See 1 more Smart Citation

Laser Processing of Flexible In-Plane Micro-supercapacitors: Progresses in Advanced Manufacturing of Nanostructured Electrodes

et al. 2022

View full text Add to dashboard Cite

Flexible in-plane architecture micro-supercapacitors (MSCs) are competitive candidates for on-chip miniature energy storage applications owing to their light weight, small size, high flexibility, as well as the advantages of short charging time, high power density, and long cycle life. However, tedious and time-consuming processes are required for the manufacturing of high-resolution interdigital electrodes using conventional approaches. In contrast, the laser processing technique enables high-efficiency high-precision patterning and advanced manufacturing of nanostructured electrodes. In this review, the recent advances in laser manufacturing and patterning of nanostructured electrodes for applications in flexible in-plane MSCs are comprehensively summarized. Various laser processing techniques for the synthesis, modification, and processing of interdigital electrode materials, including laser pyrolysis, reduction, oxidation, growth, activation, sintering, doping, and ablation, are discussed. In particular, some special features and merits of laser processing techniques are highlighted, including the impacts of laser types and parameters on manufacturing electrodes with desired morphologies/structures and their applications on the formation of high-quality nanoshaped graphene, the selective deposition of nanostructured materials, the controllable nanopore etching and heteroatom doping, and the efficient sintering of nanometal products. Finally, the current challenges and prospects associated with the laser processing of in-plane MSCs are also discussed. This review will provide a useful guidance for the advanced manufacturing of nanostructured electrodes in flexible in-plane energy storage devices and beyond.

show abstract

Unveiling the Potential of Colorless Polyimide‐Derived Laser‐Induced Graphene: A Novel Pathway for Advanced Sensor and Energy Harvester Performance

Jeong,

Ito,

Kwon

et al. 2023

Adv Materials Inter

View full text Add to dashboard Cite

The potential of laser‐induced graphene (LIG), recognized for its distinct attributes in diverse fields, has significantly grown. However, the creation of LIG using colorless polyimide (CPI) films remains unexplored. This research sheds light on the graphitization technique for generating LIG from CPI films via laser techniques, a process validated through ReaxFF simulations. It is also illustrated that CPI integrated with fluorine atoms possesses an elevated porous configuration, rendering it apt for high‐sensitivity, low‐detection limit pressure sensors. The pressure sensor, constructed with LIG derived from CPI, showcases superior performance metrics such as an exceptional sensitivity rate of 60.340 kPa−1 in low‐pressure ranges (1.0–1.5 kPa), prompt response and recovery intervals (27/36 ms), and commendable durability. The sensor's ability is further validated to precisely track human movements. Moreover, the study employs the LIG sourced from CPI as a dielectric‐to‐dielectric triboelectric nanogenerator (TENG), yielding a peak power output of 411.4 mW m−2 under a 40 MΩ load resistance. The CPI‐based LIG offers increased porosity in comparison to traditional LIG, which aids in superior functioning in pressure sensors and TENG devices. This research offers a fresh perspective on the application possibilities of CPI‐sourced LIG, notably in pressure sensors and energy harvesting devices.

show abstract

Mechanism of graphene oxide laser reduction at ambient conditions: Experimental and ReaxFF study

Cited by 22 publications

References 74 publications

An Update on Graphene Oxide: Applications and Toxicity

An Update on Graphene Oxide: Applications and Toxicity

Laser Processing of Flexible In-Plane Micro-supercapacitors: Progresses in Advanced Manufacturing of Nanostructured Electrodes

Unveiling the Potential of Colorless Polyimide‐Derived Laser‐Induced Graphene: A Novel Pathway for Advanced Sensor and Energy Harvester Performance

Contact Info

Product

Resources

About