Article
Chemistry, Physical
Lubna Naheed, Miriam Koppel, Maarja Paalo, Khadija Alsabawi, Krystina E. Lamb, Evan MacA. Gray, Alar Janes, Colin J. Webb
Summary: The properties of the adsorbed hydrogen phase in three carbide derived carbons have been studied, and it was found that all three CDCs had the same maximum adsorbate density, with the adsorption proportional to the total pore volume.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Hongwei Liu, Yongzhen Wang, Liang Lv, Xiao Liu, Ziqi Wang, Jun Liu
Summary: Functional coal-based carbon materials with suitable pore structure and surface properties were prepared from lignite through a ball milling-assisted bimetallic salt catalytic pyrolysis strategy. The optimized carbon material, OHPC-1, exhibited a large specific surface area, rational pore structure distribution, and suitable oxygen doping, leading to excellent charge storage and fast electrolyte ions diffusion. The assembled OHPC-1//OHPC-1 symmetrical capacitor showed high energy density and cycling stability at different power densities, demonstrating the promising application of lignite in the preparation of cost-effective porous carbons for high-performance supercapacitors.
Article
Chemistry, Multidisciplinary
Dong Liu, Tao Sun, Yuqin Hu, Yigang Ding, Baomin Fan, Haitao Wang
Summary: A versatile K2CO3 activation approach is proposed to adjust and control the pore structure of sunflower plate-derived hierarchical porous carbon materials. The specific surface area of the optimal material is 2526 m2/g, and it exhibits superior capacitance activity. The assembled supercapacitors also demonstrate high energy density in different electrolyte solutions.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Applied
Wanlu Li, Meruyert Nazhipkyzy, Teresa J. Bandosz
Summary: Porous carbons obtained from rice husk using two different chemical activation methods were studied as supercapacitors. The results showed that the capacitance of the carbon material is dependent on its porosity, and while a high ash content may limit accessibility to electrolyte ions, it does not significantly impact specific capacitance.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Energy & Fuels
Shun Zhao, Yun Zhang, Yunfei Wu, Lijun Zhang, Haoquan Hu, Lijun Jin
Summary: Catalytic methane decomposition (CMD) is a promising route for H2 production. In this study, MOF-derived hierarchical carbon catalysts were prepared and their catalytic performances were investigated. The results showed that by adjusting the carbonization temperature and carbon source, the morphology and pore structure of the derived carbon materials can be improved, leading to enhanced catalytic performance. Increasing the reaction temperature also significantly enhanced the catalytic performance.
JOURNAL OF THE ENERGY INSTITUTE
(2022)
Review
Chemistry, Multidisciplinary
Xianyou Luo, Shaorui Chen, Tianzhao Hu, Yong Chen, Feng Li
Summary: Biomass is a rich, renewable, sustainable, and green resource that can be utilized for the fabrication of various carbon materials. The diverse structures and morphologies of biomass can help in obtaining carbon materials with different performances. Biomass-derived carbons show excellent properties in electrochemical capacitors and can be further enhanced by compositing with other materials.
Article
Chemistry, Multidisciplinary
Changwan Nou, Byeong Geun Kim, Soo-Young Suk, Soon-Mok Choi
Summary: Carbide-based MAX phases, titanium silicon carbide (Ti3SiC2), were synthesized using a sintering process with eggshell membranes as carbon sources. The influence of silicon content on the formation of secondary phases and peak shifts in the Ti3SiC2 phase was investigated, and the thermoelectric properties of the products were also explored.
Article
Chemistry, Multidisciplinary
Zhi-Yuan Feng, Long-Yue Meng
Summary: Hierarchical porous carbons (HPCs) were successfully prepared using corncob as a natural carbon precursor and Mg(C2H3O2)(2) as a nano-template precursor, with the resulting materials showing excellent gas and solution absorbency. Increasing the ratio of Mg(C2H3O2)(2)/corncob led to higher specific surface area, pore volumes, and increased adsorption capacities for CO2, CH4, and MB.
Article
Engineering, Environmental
Jiangfang Yu, Haopeng Feng, Lin Tang, Ya Pang, Jiajia Wang, Jiajing Zou, Qingqing Xie, Yani Liu, Chengyang Feng, Jingjing Wang
Summary: A hierarchical porous biochar (HPB) derived from shrimp shell was prepared with good adsorption capacity and fast adsorptive equilibrium towards aromatic organics. The study revealed the relationship between adsorption forms, structural features, and adsorption performance of biochar.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xiuping Yin, Yufeng Zhao, Xuan Wang, Xiaochen Feng, Zhixiu Lu, Yong Li, Hongli Long, Jing Wang, Jinyan Ning, Jiujun Zhang
Summary: By coating low-cost pitch on the surface of resin-derived hard carbons, it is possible to produce materials with excellent electrochemical performance at a relatively low pyrolysis temperature, suitable for use in both sodium-ion batteries and potassium-ion batteries.
Article
Chemistry, Physical
Jin Seul Byun, Yo Chan Jeong, Jae Ho Kim, Min Chang Shin, Jeong Yeon Park, Hyoung-Joon Jin, Chong Rae Park, Taehoon Kim, Seung Jae Yang
Summary: The desire for multi-functional carbon materials has led to extensive study on exploiting mesostructured porous carbon derived by pseudo metal-organic coordination. The use of zinc ions as both a mesostructure inducer and self-vanishing porogen enables the direct carbonization of non-carbonizable precursors, resulting in porous carbon materials with diverse pore architectures. These materials show great potential for various applications, demonstrated by their ability to adsorb large molecules and enhance the electrochemical performance of sulfur cathodes for Li-S batteries.
Article
Chemistry, Physical
Beichen Xue, Jiahuan Xu, Yi Feng, Mingyang Ma, Rui Xiao, Xiaofeng Wang
Summary: The morphology of carbon significantly affects its capacitive performance. Biomass-derived porous carbons have inferior capacitive performance due to their three-dimensional blocked morphologies. This study provides a strategy to regulate the morphology of porous carbons and investigates the effect of morphology on charge storage capability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Shuwen Wang, Fernando Vallejos-Burgos, Ayumi Furuse, Yasunori Yoshikawa, Hideki Tanaka, Katsumi Kaneko
Summary: The study compares Ar and N-2 adsorption isotherms of non-graphitized carbon blacks to choose the best reference material for surface area determination. Microporous carbon blacks and capillary condensation reference blacks both underestimate surface area. Surface area determination with Ar adsorption is more affected by reference carbon blacks' microporosity than with N-2 adsorption. An open repository provides optimized reference data and calculations for precise characterization of porous carbons using the SPE method.
Article
Chemistry, Physical
Chenhong Fang, Zhi Xu, Le Li, Huijun Ouyang, Guyu Xiao
Summary: In this study, a post-impregnation approach was used for the first time to incorporate a micropore template into a carbon precursor. By pyrolysis, abundant mesopores and numerous micropores were simultaneously generated, resulting in hierarchical pore structures and high specific surface area in the porous carbons.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Geochemistry & Geophysics
Ju-Hwan Kim, Young-Jun Kim, Seok-Chang Kang, Hye-Min Lee, Byung-Joo Kim
Summary: This study prepared asphalt-pitch-derived activated carbon (Pitch AC) using a physical activation method for an electric double-layer capacitor (EDLC) electrode. The crystal structure and textural properties of Pitch AC were analyzed, and the electrochemical performance was evaluated. The results showed that the pore characteristics of Pitch AC changed from a microporous structure to a micro-mesoporous structure with increased activation time. The specific capacity of Pitch AC also increased with activation time. Pitch AC-9 exhibited the best electrochemical performance and had a specific capacitance similar to commercial activated carbon for EDLC.
Article
Chemistry, Applied
Shuhe Liu, Yonggang Jin, Jun-Seok Bae, Zhigang Chen, Peng Dong, Shuchun Zhao, Ruyan Li
MICROPOROUS AND MESOPOROUS MATERIALS
(2020)
Article
Energy & Fuels
Junjun Yin, Shi Su, Xinxiang Yu, Jun-Seok Bae, Yonggang Jin, Alex Villella, Maurice Jara, Michael Ashby, Michael Cunnington, Michael Loney
Article
Engineering, Chemical
Jun-Seok Bae, Shi Su, Xin Xiang Yu, Junjun Yin, Alex Villella, Maurice Jara, Mick Loney
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2020)
Article
Engineering, Chemical
Xuechao Gao, Chao Da, Cheng Chen, Zongheng Li, Xuehong Gu, Suresh K. Bhatia
Summary: This research reveals that the orientation of permeating molecules significantly affects gas transfer behavior, with linear molecules experiencing reduced permeance due to unfavorable orientation. However, the ideal selectivity for H-2 relative to linear molecules is enhanced in the presence of the alkali lignin molecule. This study provides insights into how inducing specific molecular orientations can improve the separation efficiency of nanoporous membranes.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Physical
Ravi C. Dutta, Christian C. Zuluaga-Bedoya, Suresh K. Bhatia
Summary: Fluid transport in finite-sized nanoporous materials is significantly affected by apparent interfacial barriers, where transport coefficients are non-uniform and increase with distance from the external surface, approaching the bulk system value far from the surface. The attenuation of transport occurs in a finite entrance region due to the fluid momentum decorrelation, which has remarkable effects on membrane selectivity.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Biochemistry & Molecular Biology
Manh-Tuan Vu, Gloria M. Monsalve-Bravo, Rijia Lin, Mengran Li, Suresh K. Bhatia, Simon Smart
Summary: The study proposes an efficient approach to improve the polymer/filler interfacial interaction in CO2/N-2 separation membranes by decorating the surface of ND with PEI. The introduction of PEI reduces the agglomeration of ND in the polymer matrix, which is evidenced by FIB-SEM observation.
Article
Nanoscience & Nanotechnology
Christian C. Zuluaga-Bedoya, Ravi C. Dutta, Suresh K. Bhatia
Summary: The study conducted simulations using ideal nanosheets and found that transport resistance is mainly distributed within the solid, unaffected by interfacial effects. It also revealed the presence of an internal entry region in nanomaterials, where incomplete decorrelation leads to a decrease in internal transport coefficient.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Correction
Chemistry, Physical
Ravi C. Dutta, Christian C. Zuluaga-Bedoya, Suresh K. Bhatia
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Thermodynamics
Luke Henderson, Pradeep Shukla, Victor Rudolph, Suresh K. Bhatia
Summary: A 2-D population balance model with internal variables of carbon mass and surface sites was developed to study soot formation during hydrocarbon decomposition reactions. The model accurately predicts the size and composition distribution of soot particles under various conditions, which was confirmed by experimental data.
COMBUSTION AND FLAME
(2022)
Article
Engineering, Chemical
Jun-Seok Bae, Xin Xiang Yu, Shi Su
Summary: In an effort to reduce greenhouse gas emissions and harness low-quality coal mine methane (CMM) as an energy source, this paper explores the use of adsorption-based swing processes to enrich CMM to a level suitable for direct utilization. Various combinations of vacuum swing adsorption (VSA) and vacuum, temperature, and vacuum swing adsorption (VTVSA) processes were applied, resulting in an increase in methane content and elimination of safety concerns. The findings provide valuable insights for mine operators and other applications such as methane capture from landfill sites.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
Suresh K. Bhatia, Ravi C. Dutta
Summary: Interfacial resistance is a major obstacle for transport in nanomaterials and membranes, especially when the system size is reduced. However, the mechanism behind this resistance and its prediction still remain unclear. In this study, a kinetic theory-based approach is developed to explain low-density transport in finite nanopores, revealing the relationship between interfacial resistance and the entry region of developing flow. It is found that the enhanced influence of short molecular trajectories in this region reduces the local transport coefficient, leading to interfacial resistance. The application of this approach to H2 transport in carbon nanotubes shows the increase in apparent interfacial resistance with decreasing nanotube diameter and increasing fluid-solid interaction strength.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Electrochemistry
Ravi C. Dutta, Suresh K. Bhatia
Summary: Water-in-salt electrolyte (WISE) systems have the potential for high performance and affordable energy storage devices such as batteries and supercapacitors. The structure and ion dynamics in these systems are different from aqueous electrolytes and poorly understood. Molecular dynamics simulations were used to investigate the structure and ion dynamics of WISE materials with pure and eutectic mixtures of Li-NTF2 and Li-MM3411 salts at various concentrations. The simulations revealed the existence of small water clusters, and the binding of water molecules to cations and anions at high salt concentrations. Li ions display different solvation environments depending on the salt and its concentration. The results suggest a solvent-assisted Li-ion diffusion mechanism in WISE systems. Adding a small amount of another salt can regulate the cation transport number and optimize the salt concentration for high apparent transference number and ionic conductivity.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Matthew M. Kratzer, Suresh K. Bhatia, Alexander Y. Klimenko
Summary: In gas transport systems of the nanoscale, fluid-surface interactions dominate the flow state evolution. The added effective resistance induced by the non-equilibrium entrance region becomes significant, leading to the breakdown of classical effusion models. This study develops a stochastic model of interfacial resistance and applies it to analyze gas flow through long nanotubes, demonstrating the presence of non-equilibrium effects within current manufacturing capabilities and discussing gas separation in carbon nanotube arrays.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Christian C. Zuluaga-Bedoya, Suresh K. Bhatia
Summary: Nanoscale systems, such as hierarchical nanoporous materials, nanosheets, and ultrathin membranes, are being increasingly explored for their potential in reducing transport resistance. However, the analysis of finite-size systems often overlooks the effects of end effects and framework flexibility, leading to a lack of understanding in their gas transport limitations. This study evaluates the limitations in finite zeolite/MOF nanosheets and uncovers the specific effects of framework flexibility, including vibrating window, thermal, and finite-size effects. The results highlight the importance of considering framework flexibility in realistic nanomembrane design for improved separation performance.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Hamidreza Ramezani, Ianis Ellien, Zineb El Oufir, Nathalie Mathieu, Sandrine Delpeux, Suresh K. Bhatia
Summary: Motivated by the importance of caffeine removal from wastewater, this study investigates the clustering and adsorption of caffeine in activated carbon using Molecular Dynamics and Grand Canonical Monte Carlo simulations. The results are validated by experiments and reveal similar clustering mechanisms in large pores as well as high caffeine concentrations in water. The study also uncovers the strong interaction between caffeine and water, and the presence of caffeine dimers and more complex forms in the activated carbon.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
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.
