Article
Nanoscience & Nanotechnology
Dang Du Nguyen, Yonas Tsegaye Megra, TaeGyeong Lim, Ji Won Suk
Summary: Free-standing graphene-based paper-like materials are of interest due to their tunable properties and unique structures. Understanding the interactions between graphene sheets is crucial for their applications. In this study, we characterize the interlayer cohesion energies in graphene papers through mechanical separation and chemical reduction. The interlayer cohesion energy is correlated with the oxygen content, interlayer spacing, and electrical conductivity of the graphene papers, providing insight into the potential tunability of interlayer interactions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Naveen Karuppusamy, Vinitha Mariyappan, Shen Ming Chen, Mohan Das Thangamuthu, Ru-Han Li
Summary: It is crucial to monitor the level of AAP in the human body and consumption sources to prevent severe health issues caused by overdose and prolonged use of acetaminophen drugs. In this study, a manganese cobalt phosphide (MnCo-P) modified electrode on sulfur-doped reduced graphene oxide (S-RGO) composite was developed for electrochemical detection of AAP. The results showed high sensitivity and low detection limit of the MnCo-P/S-RGO electrode, making it significant for AAP level monitor in clinical settings.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Inorganic & Nuclear
Shuangqiang Shi, Cheng Yang, Yubin Chen, Sijia Hao, Junpeng Tian, Shenglong Dai
Summary: This study introduces a controllable ethanol-assisted hydrothermal and annealing treatment to simplify the preparation of reduced graphene oxide (RGO) with improved agglomeration and achieved tunable electromagnetic wave absorption performance.
SOLID STATE SCIENCES
(2022)
Article
Chemistry, Physical
Wu Fan, Hongjiao Qu, Qiliang Zhao, Xin Sun, Tao Wang, Xingyu Yu, Junjie Pan, Jianping He
Summary: In this paper, the authors prepared a novel cobalt phosphide wrapped by reduced graphene oxide (CoP/RGO) by simple hydrothermal and phosphating reaction. The introduction of RGO enhanced the conductive loss and polarization loss of materials, resulting in better microwave absorption performance compared to most reported transition metal phosphate-based absorbents. The CoP/RGO composites demonstrated a minimum reflect loss value of -52.60 dB and a maximum effective absorption bandwidth of 5.04 GHz, making it a promising candidate as an absorber material.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Changlong Du, Shaohua Shi, Guangjing Chen, Ying Zhang, Qiyi Wei, Liang Li, Gengping Wan, Zhen Deng, Yue Wu, Yanran Su, Lianrui Li, Guizhen Wang
Summary: Constructing high-volume hybrid supercapacitors based on FeNiCoP/rGO cathode and N-C/rGO anode can significantly improve the energy density of supercapacitors. The FeNiCoP nanoneedles uniformly coated on rGO exhibit high specific capacitance and favorable rate performance, while the N-C/rGO anode with rich void structure and nitrogen doping delivers high specific capacitance. The assembled HSC device achieves impressive energy and power densities, as well as good cycle stability.
MATERIALS TODAY ENERGY
(2023)
Article
Environmental Sciences
Kuo-Yuan Hwa, Anindita Ganguly, Aravindan Santhan, Tata Sanjay Kanna Sharma
Summary: In this study, a two-dimensional hybrid nanocomposite of Vanadium selenide (V2Se9) and reduced graphene oxide (rGO) was successfully synthesized via a simple hydrothermal method, exhibiting excellent conductivity and catalytic activity for the detection of 2,4,6-trichlorophenol. Comprehensive structural characterization confirmed high charge transfer ratio, surface area, and catalytic performance, highlighting the potential for electrochemical sensor applications.
Article
Nanoscience & Nanotechnology
Emmanuel Boateng, Joshua van der Zalm, Nicholas Burns, Darren Chow, Stefan Kycia, Aicheng Chen
Summary: Strategic surface modification and doping of reduced graphene oxide (rGO) support materials via heteroatom functionalization and metal decoration have been shown to improve hydrogen storage performance. By utilizing a microwave assisted hydrothermal method, a series of nitrogen-doped rGO (NrGO) nanomaterials were fabricated with tuned nitrogen contents up to 7.0 at. %. The NrGO nanomaterials were then decorated with palladium nanoparticles (Pd NPs) via a facile chemical reduction method to form Pd/NrGO nanocomposites.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ting-Yu Lee, Wei-Ren Liu
Summary: By introducing reduced graphene oxide, the study effectively buffered the volume expansion of CoIn2S4, leading to improved cycle performance in lithium ion batteries.
Article
Nanoscience & Nanotechnology
Wenrui Dai, Yuan Liu, Meng Wang, Ming Lin, Xu Lian, Yani Luo, Jinlin Yang, Wei Chen
Summary: This study synthesized ruthenium nanoparticles anchored on nitrogen-doped reduced graphene oxide as a bifunctional catalyst for lithium-oxygen batteries, which significantly improved the electrochemical performance with increased discharge capacity, decreased charge overpotential, and long-term cyclability. The findings highlight the importance of dispersion and coordination of metal catalysts in the rational design of efficient catalysts for future lithium-oxygen batteries.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Xuecheng Fan, Zichen Xu, Jiapeng Wang, Heng Wang, Hao Wei, Qiang Wang, Chengyi Wang, Qiang Shen
Summary: A ferromagnetic nanocomposite with excellent microwave absorption performance has been successfully prepared and studied. The nanocomposite satisfies the requirements of ideal absorbers.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yuta Shudo, Md. Saidul Islam, Hikaru Zenno, Masahiro Fukuda, Manabu Nakaya, Nurun Nahar Rabin, Yoshihiro Sekine, Leonard F. Lindoy, Shinya Hayami
Summary: Interlayer spaces in 2D layered materials can be used for trapping gases, ion transfer, and water purification. In this study, the inner pressure in a GO-Ni(OH)2 hybrid 2D sheet could be tuned by reducing GO, affecting the magnetic behavior of Ni(OH)2. The ferromagnetic transition temperature for Ni(OH)2 decreases as the interlayer distance becomes shorter, opposite to the behavior observed for the application of hydrostatic pressure.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Analytical
Asad Ali, Naseem Iqbal, Tayyaba Noor, Umair Imtiaz
Summary: This study investigates a novel catalyst based on nitrogen-doped carbon and manganese-zinc nanocomposite for the oxygen reduction reaction in an alkaline medium. The nanostructured composite surpasses the commercial platinum/carbon catalyst in terms of material resources and application efficacy, exhibiting lower overpotential and higher activity for oxygen reduction, as well as tolerance to methanol.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Syed Farooq Adil, Shoomaila Latif, Muhammad Waqar, Muhammad Imran, Sadia Noreen, Mujeeb Khan, Mohammed Rafi Shaik, Mohammad Rafe Hatshan
Summary: In this study, mixed metal oxides and La-doped oxides were prepared using the sol-gel method. These materials were then blended with graphene oxide to obtain nanocomposites, which were characterized using various techniques. The dielectric properties of the composites were studied, with La-doped composites showing a higher dielectric constant compared to the non-doped composites.
Article
Materials Science, Multidisciplinary
Shishir Kumar Pandey, Abhinav Kumar, Sagar Sarkar, Priya Mahadevan
Summary: Through a combination of ab initio electronic structure calculations and microscopic modeling, the study investigates the origin of a charge-ordered ferromagnetic insulating state in VO2 with 12.5% Cr doping, successfully reproducing the state and charge ordering at V and Cr sites. The quantification of the energy gain from different exchange pathways sheds light on the role of charge ordering in stabilizing the ferromagnetic insulating state.
Article
Chemistry, Physical
Haochen Zhu, Bo Hu, Han Hu, Wenzhi He, Juwen Huang, Guangming Li
Summary: The dielectric behavior of water in graphene nanochannels has been studied, showing a decrease in dielectric constant with narrower spaces. With higher oxidation concentration, wider interval spaces have a greater influence on dielectric constant. The number of hydrogen bonds and dynamic stability correlate with the disorder of water molecules in different nanochannels.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
Sumit Mandal, Abu Jahid Akhtar, Bikash Kumar Shaw, Shyamal K. Saha
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2015)
Article
Physics, Applied
Abu Jahid Akhtar, Abhisek Gupta, Bikash Kumar Shaw, Shyamal K. Saha
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2016)
Article
Physics, Applied
Abu Jahid Akhtar, Abhisek Gupta, Bikash Kumar Shaw, Shyamal K. Saha
APPLIED PHYSICS LETTERS
(2013)
Article
Materials Science, Multidisciplinary
Abhisek Gupta, Abu Jahid Akhtar, Shyamal K. Saha
MATERIALS CHEMISTRY AND PHYSICS
(2013)
Article
Nanoscience & Nanotechnology
Abu Jahid Akhtar, Abhisek Gupta, Dipankar Chakravorty, Shyamal K. Saha
Article
Engineering, Electrical & Electronic
Abu Jahid Akhtar, Shubhankar Mishra, Sudip Kumar Saha
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2020)
Article
Polymer Science
Arpita Dutta, Shubhankar Mishra, Sudip Kumar Saha, Sanjit Sarkar, Asim Guchhait, Abu Jahid Akhtar
Summary: By wrapping ZnO nanoparticles with graphene sheets in a three-dimensional conductive manner, the efficiency of supercapacitors can be significantly improved, enhancing power density and cycling stability.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2022)
Review
Engineering, Electrical & Electronic
Monisha Nayak, Abu Jahid Akthar, Asim Guchhait, Sudip K. Saha
Summary: Organic-inorganic hybrid perovskite solar cells have shown promising efficiency and properties, but the toxicity and hygroscopic nature due to lead and organic cations call for alternatives to improve stability.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Ceramics
Shubhankar Mishra, Anurup Das, Abu Jahid Akhtar
Summary: The research demonstrates a single-phase material with significant magnetoelectric coupling at room temperature, allowing for easy tuning of memory states and switching with electric pulses.
CERAMICS INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Arpita Dutta, Karabi Chatterjee, Shubhankar Mishra, Sudip K. Saha, Abu Jahid Akhtar
Summary: The study found that doping can improve the performance of ZnO supercapacitors by increasing the efficiency of electron and ion transfer and improving conductivity. In addition, doping with cobalt can generate oxygen vacancies in ZnO, further improving its conductivity. Different performance of supercapacitors can be achieved by varying the doping amount.
JOURNAL OF MATERIALS RESEARCH
(2022)
Article
Materials Science, Ceramics
Karabi Chatterjee, Arpita Dutta, Shubhankar Mishra, Bapan Bairy, Moni Baskey Sen, Anupam Gorai, Sudip K. Saha, Abu Jahid Akhtar
Summary: Metal doping can enhance the photocatalytic activity and photo-induced conductivity of semiconductor metal oxides. In this study, cobalt doping was found to significantly improve the photocatalytic activity of ZnO QD as well as increase its photoconductivity and photosensitivity.
CERAMICS INTERNATIONAL
(2023)
Article
Physics, Applied
Poulami Hota, Abu Jahid Akhtar, Shatabda Bhattacharya, Milon Miah, Shyamal K. Saha
APPLIED PHYSICS LETTERS
(2017)
