Article
Energy & Fuels
Marzieh Simani, Hossein Dehghani
Summary: A new nanocomposite with a zirconium-based metal-organic framework was synthesized to improve the hydrogen storage capacity of graphene oxide. The introduction of silver showed the best results, with a hydrogen storage capacity of 1600 mAh for the 25 wt% Ag/graphene oxide. Additionally, UiO-66/silver/graphene oxide nanocomposites demonstrated significantly enhanced hydrogen storage capacity, reaching 6100 mAhg(-1) (22.94 wt%) after 20 cycles, which was about 3.8 times higher than the Ag/graphene oxide sample and approximately 2 times higher than the UiO-66 sample.
Article
Chemistry, Physical
Zeynel Ozturk
Summary: Hierarchical novel metal graphene framework structures were designed and used for hydrogen storage, with the addition of aqua molecules found to enhance the storage efficiency, while removal of aqua molecules in the same structure led to a significant decrease in hydrogen storage capacity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Chemistry, Physical
Sachin P. Shet, S. Shanmuga Priya, K. Sudhakar, Muhammad Tahir
Summary: Hydrogen has potential as a clean energy carrier, but its storage and safety issues need to be addressed. Metal-organic frameworks are efficient materials for hydrogen adsorption, and improvements in surface area and parameters can enhance hydrogen uptake capabilities.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
Bo Xie, Bosheng Ding, Peng Mao, Ying Wang, Yini Liu, Minrui Chen, Changjiang Zhou, Hui-min Wen, Shengjie Xia, Min Han, Richard E. Palmer, Guanghou Wang, Jun Hu
Summary: This paper presents a hybrid hydrogen sensor composed of a Pd nanocluster film, a metal-organic framework (MOF), and a polymer. The polymer coating provides the sensor with excellent selectivity and resistance to CO poisoning. The MOF acts as an interface layer, improving sensing performance through altered hydrogen interaction and interfacial electronic coupling with the Pd nanoclusters.
Article
Chemistry, Multidisciplinary
Ivan Esteve-Adell, Maria Porcel-Valenzuela, Leire Zubizarreta, Mayte Gil-Agusti, Marta Garcia-Pellicer, Alfredo Quijano-Lopez
Summary: It was found that graphene nanoplatelets with high specific surface area can improve the electrochemical performance of Li-ion battery electrodes compared to graphite electrodes, showing higher reversible capacity.
FRONTIERS IN CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Muhammad Ramzan Abdul Karim, Muhammad Noman, Khurram Imran Khan, Waseem Shehzad, Ehsan Ul Haq, Nadia Shahzad, Khurram Yaqoob
Summary: In this study, Ni-Co-metal organic framework (MOF)/graphene nanoplatelets (GNPs) nanocomposites were successfully synthesized using solvothermal synthesis method for their potential application as electrode material in energy storage devices. The addition of GNPs enhanced the charge storage performance of MOF nanocomposites. The Ni-Co-MOF/GNP-50 composite electrode showed the highest specific capacity, good reversibility, low internal resistance and charge transfer resistance, and good thermal stability. The electrochemical evaluation on the asymmetric supercapacitor (ASC) real device demonstrated high specific capacity, maximum energy density, maximum power density, and good stability performance.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Nikolaos Kostoglou, Chi-Wei Liao, Cheng-Yu Wang, Junko N. Kondo, Christos Tampaxis, Theodore Steriotis, Konstantinos Giannakopoulos, Athanassios G. Kontos, Steve Hinder, Mark Baker, Etienne Bousser, Allan Matthews, Claus Rebholz, Christian Mitterer
Summary: A nanoporous graphene-based material with large surface area was decorated with Pt nanoparticles via plasma treatment and thermal reduction, showing slightly improved hydrogen sorption behavior at room temperature. The presence of Pt may lead to weak chemisorption phenomena and potential hydrogen spillover effect.
Article
Nanoscience & Nanotechnology
Guosheng Wang, Zhaoxiong Yan, Nenghuan Wang, Ming Xiang, Zhihua Xu
Summary: In this study, NiO/Ni metal-organic framework composites were successfully synthesized by tuning the conversion degree of NiO to Ni-MOF, leading to enhanced performance of the electrode material for supercapacitors. The assembled asymmetric supercapacitor with NiO/Ni-MOF-25 exhibited superior electrochemical performance and decent cyclic durability, achieving a high energy density and power density. This work provides a facile way to design and synthesize composite electrode materials for powerful supercapacitors.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
A. J. R. Thom, D. G. Madden, R. Bueno-Perez, A. N. Al Shakhs, C. T. Lennon, R. J. Marshall, C. A. Walshe, C. Wilson, C. A. Murray, S. P. Thompson, G. F. Turner, D. Bara, S. A. Moggach, D. Fairen-Jimenez, R. S. Forgan
Summary: To achieve optimal performance in gas storage and delivery, metal-organic frameworks (MOFs) need to have high gravimetric and volumetric capacities. This study reports an interpenetrated MOF named GUF-1, which demonstrates a potentially viable route to high-performance gas storage materials comprised of relatively simple building blocks.
MATERIALS TODAY CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Junjie Xie, Rui Ma, Haobin Fang, Haoran Shi, Dingxin Liu
Summary: Metal-organic frameworks (MOFs) have unique potential in energy storage devices, especially in supercapacitors. However, the advantages of acid electrolyte are often overlooked due to the instability of MOFs in an acidic environment. This study explores the potential of aqueous acid electrolyte in MOFs-based supercapacitors by using a stable MOF MIL-101(Fe) and graphene oxide (GO) as composite material. The results show excellent electrochemical performance, stability, and cycling stability, suggesting the promising use of aqueous acid electrolyte in MOFs-based supercapacitors.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Physical
Bin Wang, Xin Zhang, Hongliang Huang, Zhangjing Zhang, Taner Yildirim, Wei Zhou, Shengchang Xiang, Banglin Chen
Summary: BUT-22 is a microporous aluminum-based MOF with high storage capacities for methane, hydrogen, and carbon dioxide, showing excellent performance under different conditions.
Article
Chemistry, Multidisciplinary
Yanqiu Jiang, Ziyang Zhang, Di Chen, Jigang Du, Yuhao Yang, Song Wang, Fan Guo, Xinyu Chen, Chao Gao, Wen-Jun Wang, Pingwei Liu
Summary: Hierarchically structural engineering of electrodes is critical for achieving high energy density and high power density in electrochemical energy storage. In this study, electrodes with well-defined hierarchical pores spanning multiple length scales were constructed, leading to outstanding capacitance retention and gravimetric capacitance.
ADVANCED MATERIALS
(2022)
Article
Environmental Sciences
Akash Garg, Miroslav Almasi, Jozef Bednarcik, Rishabh Sharma, Vikrant Singh Rao, Priyanka Panchal, Ankur Jain, Anshu Sharma
Summary: The present study synthesized and characterized a Gd(III)-based MOF (MOF-76(Gd)) with excellent hydrogen adsorption/desorption capacity and humidity sensing properties. The results showed that MOF-76(Gd) exhibited high thermal stability and good surface area and pore volume. Additionally, MOF-76(Gd) demonstrated fast response and recovery time in humidity sensing.
Article
Chemistry, Multidisciplinary
Arijit Halder, Ryan A. Klein, Sarah Shulda, Gavin A. McCarver, Philip A. Parilla, Hiroyasu Furukawa, Craig M. Brown, C. Michael McGuirk
Summary: Step-shaped adsorption-desorption of gaseous payloads by flexible metal-organic frameworks can facilitate the delivery of large usable capacities with reduced energetic penalties. The multivariate linker approach is a powerful tool for tuning the phase change behavior of flexible frameworks. In this work, a multivariate framework was developed with a considerably reduced threshold pressure and desirable adsorption-desorption profile for efficient storage and delivery of weakly physisorbing species.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Sandeep Kumar, Yohanes Pramudya, Kai Mueller, Abhinav Chandresh, Simone Dehm, Shahriar Heidrich, Artem Fediai, Devang Parmar, Delwin Perera, Manuel Rommel, Lars Heinke, Wolfgang Wenzel, Christof Woll, Ralph Krupke
Summary: Graphene is inherently sensitive to vicinal dielectrics and local charge distributions, and can be used as a sensor; metal-organic frameworks can selectively adsorb specific molecular species; growing a surface-mounted metal-organic framework directly onto graphene field-effect transistors demonstrates a selective ethanol sensor with unprecedented shifts in Dirac point voltage response.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Composites
Gayatri Vineela Marrivada, Phaneendra Kiran Chaganti, Ravindran Sujith, Bhavika Sharma
Summary: This study investigates the effect of graphene nanoplatelet addition on glass fibre triaxial braided composites and finds that adding graphene nanoplatelets can improve the mechanical properties of the composites.
ADVANCED COMPOSITE MATERIALS
(2023)
Article
Polymer Science
Yasser Zare, Kyong Yop Rhee, Soo Jin Park
Summary: This study expands the power-law model for composite conductivity of graphene-based samples by considering the effects of interphase, tunnels, and net. The effective filler fraction, percolation start, and b exponent are determined by filler dimensions, interphase thickness, tunneling distance, and net dimension/density. The model is validated using experimental data and it is found that thick interphase, large tunneling distance, high aspect ratio, large nets, and skinny and large graphene nano-sheets contribute to low b values and high conductivity. The developed model can optimize the performance of biosensors for the biosensing of breast cancer cells.
Article
Chemistry, Multidisciplinary
Yasser Zare, Kyong-Yop Rhee, Soo-Jin Park
Summary: This study investigates the relationship between interfacial conductivity, CNT length, and the effective conductivity of polymer CNT nanocomposites. The research finds that a small CNT length and high interfacial conductivity can significantly impact the beginning of percolation and the effective conductivity. The developed model can be used for optimizing breast cancer cell sensors.
Article
Materials Science, Multidisciplinary
Yasser Zare, Kyong Yop Rhee
Summary: The crucial interfacial shear strength plays a crucial role in the strength of nanocomposites filled with halloysite nanotubes. Both network strength and interfacial shear strength directly govern the strength of the nanocomposite, while the crucial interfacial shear strength and the beginning of percolation adversely affect the strengthening effect.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Ankit Sharma, Sujith Ravindran, Amit Kumar Gupta
Summary: Metal foams are lightweight and have high impact energy absorption ability, making them suitable for dynamic load applications. Density-graded foams have superior compressive properties compared to uniform foam, and the tri-layer functionally graded foam material (FGFM) achieved a maximum compressive strength of 142 MPa. The inclusion of B4C reinforcement in the FGFM further enhanced its energy absorption efficiency to approximately 67%.
ADVANCED ENGINEERING MATERIALS
(2023)
Article
Chemistry, Physical
Yasser Zare, Kyong Yop Rhee, Soo-Jin Park
Summary: A new Halpin-Tsai model is developed to calculate the modulus of halloysite-nanotube based composites considering the nets of filler and interphase. The calculations match well with experimental facts, and the parametric examinations show acceptable outputs.
SURFACES AND INTERFACES
(2023)
Review
Chemistry, Analytical
Ali Mohammadpour-Haratbar, Seyyed Behnam Abdollahi Boraei, Yasser Zare, Kyong Yop Rhee, Soo-Jin Park
Summary: Breast cancer is the second most common cancer in the world, and various biosensor strategies, including electrochemical biosensors, have been studied for its recognition. Graphene-based electrochemical biosensors have received increasing attention due to their outstanding mechanical and electrical performances. This review examines the latest advances in graphene-based electrochemical biosensors for breast cancer biosensing, analyzing the detection limit, linear range, and diagnosis techniques for each biosensor, discussing prospects, challenges, and potential strategies for enhancing their performance.
Article
Nanoscience & Nanotechnology
Gangadhar Jella, Dillip K. K. Panda, Nawraj Sapkota, Michelle Greenough, Santanu P. P. Datta, Apparao M. M. Rao, Ravindran Sujith, Rajendra K. K. Bordia
Summary: Carbon-rich SiOC-I and silicon-rich SiOC-II were synthesized and their elemental and structural characteristics were evaluated. The composite anode (SiOC-II/GNP) achieved high specific capacity (744 mAh/g) and excellent cycling stability. The enhanced electrochemical performance was attributed to better electronic conductivity, lower charge-transfer resistance, and short ion diffusion length.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
Saurabh Khandelwal, Gyeong Hun Han, Sanghoon Kim, Kyong Yop Rhee
Summary: This study investigates the effect of high-temperature calcination on the thermal and mechanical properties of bentonite clay. It is found that the dehydration and amorphization process of bentonite clay at 800 degrees Celsius can improve the microstructure and thermal stability of basalt epoxy composites, leading to enhanced mechanical performance.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Vivek Dhand, Jiseok Lim, S. Bharadwaj, Sanghoon Kim, Kyongyop Rhee
Summary: We investigated the synthesis of ternary transition metal boride (TTMB) powders by auto-ignition based sol-gel approach and studied their magnetic property. The TTMB powders obtained showed different crystallinity and magnetic behavior, depending on the boron to metal ratio and the introduction of dysprosium. The TTMB powders can be potentially used in various applications such as sensors, environmental catalysts, radiation shielding, and contrasting agents.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Chemistry, Physical
Yasser Zare, Kyong Yop Rhee, Soo-Jin Park
Summary: The effects of Lc on the depth of the operative interphase, operative filler concentration, and mechanical percolation start are studied. An equation is proposed to determine the strength of HNT composites with an imperfect interphase and an HNT network. The relationships between B and Lc, HNT size, and percolation start are analyzed. The lowest Lc, lowest percolation start point, slimmest and longest HNTs, and highest interfacial shear strength yielded the highest B values and the toughest samples.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Ali Mohammadpour-Haratbar, Yasser Zare, Nima Gharib, Kyong Yop Rhee
Summary: In this study, a simple model is proposed to predict the Young's modulus of polymer composites containing cellulose nanocrystals (CNCs). The model is validated by experimental results and shows good agreement with measured values. Various factors such as interphase thickness, volume fraction of interphase regions, densities of polymer matrix and CNC, and CNC size are investigated for their effects on the Young's modulus. Thinner CNCs and thicker interphase contribute to higher modulus, while the volume fraction of interphase regions has the least influence on the nanocomposite modulus.
SURFACES AND INTERFACES
(2023)
Review
Chemistry, Physical
Ravindran Sujith, Jella Gangadhar, Michelle Greenough, Rajendra K. Bordia, Dillip K. Panda
Summary: Lithium-ion batteries (LIBs) are widely used in transportation and portable electronics, and are being considered for renewable energy storage. Silicon-based anodes have high theoretical specific capacities, but suffer from capacity fading. Silicon oxycarbide (SiOC) materials have been developed as a substitute anode material due to their versatile synthesis routes and ability to accommodate large strains. However, SiOC anodes face challenges such as low electrical conductivity and coulombic efficiencies. Techniques like nanoparticle incorporation and prelithiation have been employed to overcome these limitations. SiOC materials also show potential in other battery systems and supercapacitors.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Energy & Fuels
Pawan K. Chauhan, Venkataraman Vidhukiran, Surendran Jyothis, Ravindran Sujith
Summary: Highly porous materials with high specific surface areas are promising for hydrogen storage, but finding chemically stable adsorbents is still a challenge. Silicon oxycarbide (SiOC) ceramics, known for their chemical stability, can overcome this obstacle. Surprisingly, the addition of graphene nanoplatelets (GNP) to SiOC ceramics resulted in a lower gravimetric density. We propose a theoretical framework to explain this phenomenon and suggest that pore sizes play a crucial role in determining hydrogen uptake in these composites.
