Article
Chemistry, Multidisciplinary
Jiayun Pei, Haiyan Zhao, Fan Yang, Dong Yan
Summary: The GO/Fe2O3 nanocomposites synthesized via vacuum-freeze-drying method exhibit excellent catalytic performance in the thermal decomposition of ammonium perchlorate, showing potential for application in catalysis.
Article
Physics, Applied
Gregor A. McQuade, Annette S. Plaut, Alan Usher, Jens Martin
Summary: Raman spectroscopy during thermal cycling of monolayer, bilayer, and trilayer graphene revealed a strain induced at 5K and measured the thermal expansion coefficient (TEC) of graphene at different thicknesses. The TEC showed consistency across different graphene thicknesses at room temperature and was in agreement with theoretical predictions. Modification of graphene flakes with various electrical contact designs did not significantly impact the resulting strain and TEC.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Ramy Sadek, Mohammad S. Sharawi, Charles Dubois, Hesham Tantawy, Jamal Chaouki
Summary: The study presents a cost-effective and scalable method for industrial production of Reduced Graphene Oxide (RGO) by combining chemical reduction and thermal treatment. The RGO produced has high electromagnetic interference (EMI) shielding performance, surpassing other graphene reduction mechanisms.
Article
Optics
Eugen Pavel, Virgil Marinescu, Marius Lungulescu
Summary: Quantum optical lithography was used to pattern monolayer graphene at 10 nm resolution, successfully producing flat surfaces and complex patterns for potential monolayer graphene nanodevices.
Article
Chemistry, Multidisciplinary
M. Kotsidi, G. Gorgolis, M. G. Pastore Carbone, G. Paterakis, G. Anagnostopoulos, G. Trakakis, A. C. Manikas, C. Pavlou, N. Koutroumanis, C. Galiotis
Summary: This work demonstrates that graphene nanoplatelets (GNPs) and other two-dimensional materials (2DMs) can act as protective barriers against the fading of architectural paints and inks used in art. These materials provide a new approach for improving the lightfastness of colors, showing superior resistance to fading under UV radiation or visible light exposure. The mechanisms of protection differ for GNPs and other 2DMs, with GNPs scavenging free radicals and absorbing UV light, while other 2DMs trap reactive oxygen species and corrosive gases. Colorimetric measurements show an extended lifetime of the 2DM-doped inks and paints by up to approximately 40%.
Article
Chemistry, Physical
Roksana Muzyka, Sabina Drewniak, Tadeusz Pustelny, Marcin Sajdak, Lukasz Drewniak
Summary: This paper analyzes various methods for preparing graphite oxide (GO) and reduced graphene oxide (rGO), and investigates their properties through statistical analysis for designing graphene oxide materials suitable for specific applications.
Article
Energy & Fuels
Oktaviardi Bityasmawan Abdillah, Octia Floweri, Muhammad Alief Irham, Akfiny Hasdi Aimon, Takashi Ogi, Ferry Iskandar
Summary: In this study, the structure of electro-exfoliated graphene (EG) was regulated using ultrasonication to improve its electrochemical properties as a supercapacitor electrode. The results showed that ultrasonication treatment increased the exfoliation degree and lateral size of EG sheets, leading to enhanced specific capacitance and cycling performance of the electrode.
Article
Physics, Applied
Zizhao Xu, Taiki Inoue, Yuta Nishina, Yoshihiro Kobayashi
Summary: This study proposes a strategy to reduce the stacking order of multilayer graphene by incorporating nanospacers and utilizing ethanol-mediated structural restoration. The reduced stacking-order graphene can be used for macroscopic applications such as electrode materials and wearable devices.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Stefan Krause, Evelyn Ploetz, Johann Bohlen, Patrick Schuler, Renukka Yaadav, Florian Selbach, Florian Steiner, Izabela Kaminska, Philip Tinnefeld
Summary: Researchers screened 10 preparation methods for graphene-on-glass and presented an optimized protocol for single-molecule and super-resolution imaging; they utilized DNA origami technology to detect graphene quality, showing discrepancies between conventional techniques such as light microscopy, atomic force microscopy, and Raman spectroscopy for graphene characterization.
Article
Chemistry, Multidisciplinary
Vamsi Krishna Reddy Kondapalli, Xingyu He, Mahnoosh Khosravifar, Safa Khodabakhsh, Boyce Collins, Sergey Yarmolenko, Ashley Paz Y. Puente, Vesselin Shanov
Summary: This study successfully synthesized high-quality 3D graphene structures through the combination of 3D printing and CVD processes, without the need for binders, showcasing unique advantages and characteristics.
Article
Energy & Fuels
Kishore K. Jena, Ahmad T. Mayyas, Bishnupad Mohanty, Bikash Kumar Jena, Jeena Rose Jos, Akram AlFantazi, Brahmananda Chakraborty, Abdulrahman Abdulla Almarzooqi
Summary: A nanohybrid material of TRGNs-MoS2 has been synthesized and applied for energy storage applications, showing enhanced gravimetric capacitance values, higher specific energy/power outputs, and better cyclic performances.
Article
Chemistry, Multidisciplinary
Sepidar Sayyar, Jo Law, Agnieszka Golda, Gregory Ryder, Gordon Wallace
Summary: This article introduces an environmentally friendly method that utilizes ball-milling of expanded graphite in the presence of the vitamin B-2 derivative Riboflavin Mononucleotide (FMN) to form highly dispersible, low defect graphene. FMN not only facilitates the exfoliation of graphite to graphene, but also ensures colloidal stability of the graphene sheets in aqueous dispersions through functionalization.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Physical
Martin Jindra, Matej Velicky, Milan Bousa, Ghulam Abbas, Martin Kalbac, Otakar Frank
Summary: This study introduces a localized spectroelectrochemical method that addresses the issue of distinguishing processes at the edges/defects from those at the intact basal plane. By comparing the electrochemical and spectral responses of monolayer graphene samples with different levels of disorder, it is discovered that both intact and defective areas contribute to the Raman G band shifts and cyclic voltammetry using the hexaammineruthenium complex. Consequently, two independent electron transfer processes coexist in one sample, but are restricted to defect-free and defect-rich areas, respectively.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Rajan Singh, Rajiv K. Kar
Summary: The surface functionalization of graphene oxide (GO) with l-cysteine shows promise for enzymatic and non-enzymatic bio-sensing and biomedical applications. Characterizing Cys-GO through spectroscopy techniques revealed differences in chemical nature and particle size distribution compared to GO. Computer simulations confirmed that a disulfide bond between Cys-GO sheets stabilizes the structure and reduces random movement, providing insights for the design of graphene-based nanosheets in nanocomposite development and sensing applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Biochemistry & Molecular Biology
Claudia Filoni, Bahram Shirzadi, Marco Menegazzo, Eugenio Martinelli, Corrado Di Natale, Andrea Li Bassi, Luca Magagnin, Lamberto Duo, Gianlorenzo Bussetti
Summary: This study discusses the potential and applications of flexible and economic sensor devices in medicine, food analysis, pollution, water quality, etc., focusing on sensors based on laser-induced graphene. The research combines atomic force microscopy and electrochemical methods to study electrode oxidation reactions, showing the superior performance of LIGE electrodes compared to other samples.
Article
Chemistry, Physical
Mahmoud Hammouri, Sanjiv K. Jha, Igor Vasiliev
JOURNAL OF PHYSICAL CHEMISTRY C
(2015)
Article
Chemistry, Physical
Sanjiv K. Jha, Katie Brown, Guido Todde, Gopinath Subramanian
JOURNAL OF CHEMICAL PHYSICS
(2016)
Article
Chemistry, Physical
Guido Todde, Sanjiv K. Jha, Gopinath Subramanian
INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY
(2017)
Article
Chemistry, Physical
Sanjiv K. Jha, Michael Roth, Guido Todde, J. Paige Buchanan, Robert D. Moser, Manoj K. Shukla, Gopinath Subramanian
JOURNAL OF PHYSICAL CHEMISTRY C
(2018)
Article
Chemistry, Physical
Guido Todde, Sanjiv K. Jha, Gopinath Subramanian, Manoj K. Shukla
Article
Chemistry, Physical
Sanjiv K. Jha, Michael Roth, Guido Todde, J. Paige Buchanan, Robert D. Moser, Manoj K. Shukla, Gopinath Subramanian
JOURNAL OF CHEMICAL PHYSICS
(2018)
Article
Chemistry, Physical
Sanjiv K. Jha, Igor Vasiliev
JOURNAL OF PHYSICAL CHEMISTRY C
(2018)
Article
Chemistry, Physical
Jie Sheng, Jingshan He, Dun Ma, Yuanbo Wang, Wu Shao, Tian Ding, Ronghao Cen, Jingwen He, Zhihao Deng, Wenjun Wu
Summary: This study presents an innovative approach to improve the photovoltaic conversion characteristics and stability of perovskite solar cells through carbon electrode interface modification. By in-situ polymerization and carbonization on the surface of nano-graphite, a dendritic structure carbon electrode is formed, reducing the work function and aligning the energy levels with perovskite. This leads to improved charge and hole collection efficiency, resulting in increased photovoltaic conversion efficiency. Furthermore, the modified carbon electrode-based perovskite solar cells exhibit exceptional stability, maintaining high efficiency even without encapsulation.
Article
Chemistry, Physical
Guodong Shi, Jian Song, Xiaoxiao Tian, Tongtong Liu, Zhanjun Wu
Summary: This study demonstrates the improvement of mechanical properties and reduction of coefficient of thermal expansion (CTE) in graphene oxide (GO)/epoxy (EP) nanocomposites by enhancing the interface between GO and EP through functionalization and incorporating rigid-flexible interphases. The results reveal that the SiO2-PEA-GO hybrid exhibits better strengthening and toughening effects, as well as lower CTE, compared to the PEA-GO hybrid due to the presence of rigid-flexible interfaces with higher bonding strength and better energy dissipation mechanisms. Additionally, the nanocomposites with longer polyetheramine (PEA) molecules in the rigid-flexible interphases demonstrate higher strength and toughness, while maintaining a lower CTE. This work provides a promising strategy for constructing adjustable flexible-rigid interfacial structures and offers potential in developing GO/EP nanocomposites with high mechanical properties and low CTE.
Article
Chemistry, Physical
Rafal Janus, Sebastian Jarczewski, Jacek Jagiello, Piotr Natkanski, Mariusz Wadrzyk, Marek Lewandowski, Marek Michalik, Piotr Kustrowski
Summary: In this study, a facile procedure for the synthesis of CMK-1 and CMK-2 carbon replicas was developed. The method utilizes basic laboratory equipment and a renewable carbon source, and operates under mild conditions. The resulting carbon mesostructures exhibit exquisite replication fidelity and structural homogeneity, making them suitable for applications in various fields.
Article
Chemistry, Physical
Anqi Wang, Connor J. MacRobbie, Alex Baranovsky, Jean-Pierre Hickey, John Z. Wen
Summary: In this study, a novel polymer-free nanothermite aerogel with a wide range of nanoparticle loading was fabricated via a new additive manufacturing process. The SEM images showed a unique porous structure formed by extra thin rGO sheets, wrapping individual nanothermite clusters. The DSC-TGA results and high-speed combustion videos confirmed the enhanced energetic performance of the printed specimen.
Article
Chemistry, Physical
Wanze Wu, Misheng Zhao, Shiwei Miao, Xiaoyan Li, Yongzhong Wu, Xiao Gong, Hangxiang Wang
Summary: Superhydrophobic solar-driven interfacial evaporator is an energy-efficient technology for seawater desalination, which is easily fabricated using robust photothermal superhydrophobic coating and substrate. The created bifunctional coating on the melamine sponge substrate shows stable and highly efficient photothermal and superhydrophobic performance for seawater desalination. This superhydrophobic solar-driven interfacial evaporator is expected to have wide applications in seawater desalination.
Article
Chemistry, Physical
Zichen Xiang, Zhi Song, Tiansheng Wang, Menghang Feng, Yijing Zhao, Qitu Zhang, Yi Hou, Lixi Wang
Summary: This study presents a co-electrospinning synthesis strategy to fabricate lightweight and porous Co@C composite nanofibres with wideband microwave attenuation capacity. The addition of MOF-derived Co additives enhances the low-frequency absorption performance.
Article
Chemistry, Physical
J. Snow, C. Olson, E. Torres, K. Shirley, E. Cazalas
Summary: This study investigates the use of a perovskite-based graphene field effect transistor (P-GFET) device for X-ray detection. The sensitivity and responsivity of the device were found to be influenced by factors such as X-ray tube voltage, current, and source-drain voltage. Simulation experiments were conducted to determine the dose rate and energy incident on the device during irradiation.
Article
Chemistry, Physical
Zuzana Jankovska, Lenka Matejova, Jonas Tokarsky, Pavlina Peikertova, Milan Dopita, Karolina Gorzolkova, Dominika Habermannova, Michal Vastyl, Jakub Belik
Summary: This study provides new insights into microwave-assisted pyrolysis of scrap tyres, demonstrating that it can produce microporous carbon black with potential application in xylene adsorption. Compared to conventional pyrolysis, microwave pyrolysis requires less time and energy while maintaining similar adsorption capacity.
Article
Chemistry, Physical
Max Bommert, Bruno Schuler, Carlo A. Pignedoli, Roland Widmer, Oliver Groning
Summary: A detailed understanding of the interaction between molecules and two-dimensional materials is crucial for incorporating functional molecular films into next-generation 2D material-organic hybrid devices. This study compares the energy level alignment of different-sized fullerenes on a Moire superstructure and finds that C-84 fullerenes can be either neutral or negatively charged depending on slight variations of the electrostatic potential. This discovery suggests a new path to achieve ambipolar charge transfer without overcoming the electronic gap of fullerenes.
Article
Chemistry, Physical
Yuanjing Cheng, Xianxian Sun, Ye Yuan, Shuang Yang, Yuanhao Ning, Dan Wang, Weilong Yin, Yibin Li
Summary: The dual-structure aerogel (GS) consisting of flexible silica fibers and graphene honeycomb structures exhibits excellent resilience, flexibility, and reliability. It also shows remarkable wave absorbing performance, making it an ideal candidate for microwave absorption applications such as flexible electronics and aerospace.
Article
Chemistry, Physical
Shuyu Fan, Yinong Chen, Shu Xiao, Kejun Shi, Xinyu Meng, Songsheng Lin, Fenghua Su, Yifan Su, Paul K. Chu
Summary: Graphene coatings are promising solid lubrication materials due to their mechanical properties. This study presents a new method for in situ deposition of high-quality graphene coatings on hard substrates using NiCo solid solution and competitive reaction strategies. The graphene coating deposited on substrates with deep NiCo solid solution demonstrates superior low-friction and durability.
Article
Chemistry, Physical
Mengdi Wang, Sanyin Qu, Yanling Chen, Qin Yao, Lidong Chen
Summary: The improved thermoelectric properties of conducting polymers are achieved by selectively capturing single-walled carbon nanotubes (SWNTs) in a conducting polymer film, leading to increased carrier mobility and reduced thermal conductivity. The resulting composite film exhibits significantly higher electrical conductivity and lower thermal conductivity compared to films with a mixture of SWNTs. This work provides a convenient and efficient method to enhance the thermoelectric properties of conducting polymers.
Review
Chemistry, Physical
Heng Wei, Weihua Li, Kareem Bachagha
Summary: This article reviews the research progress of carbon nanotube-based microwave absorbing materials (MAMs) in recent years, covering the fundamental theory, design strategies, synthesis methods, and future development directions.
Article
Chemistry, Physical
Chenguang Shi, Junlong Huang, Zongheng Cen, Tan Yi, Shaohong Liu, Ruowen Fu
Summary: This study developed a high-performance Li metal host material, which achieved dendrite-free Li deposition with a low nucleation overpotential and high Coulombic efficiencies through the combination of Ti3C2-g-PV4P sheets and Ag nanoparticles. The full cells assembled with the Li@host anode and LiFePO4 cathode exhibited high discharge capacity and excellent cycling stability, demonstrating a perspective design for future energy storage devices.
Article
Chemistry, Physical
Tomotaro Mae, Kentaro Kaneko, Hiroki Sakurai, Suguru Noda
Summary: A new partial prelithiation method for SiO/C-CNT electrodes was developed, which showed reduced irreversible capacity and achieved high energy densities with good reversibility. The method allows for precise control of the degree of prelithiation and is applicable to various chemistries.