Article
Chemistry, Physical
Arina R. Potylitsyna, Yuliya V. Rudneva, Yury I. Bauman, Pavel E. Plyusnin, Vladimir O. Stoyanovskii, Evgeny Y. Gerasimov, Aleksey A. Vedyagin, Yury V. Shubin, Ilya V. Mishakov
Summary: The catalytic utilization of chlorine-organic wastes is important for ecological reasons. This study focused on the catalytic decomposition of trichloroethylene over 100Ni and 96Ni-4W catalysts, resulting in the formation of carbon nanofibers. The optimal activity of the catalysts was observed at specific temperature ranges, and the 96Ni-4W catalyst showed better longevity compared to pure Ni catalyst.
Article
Chemistry, Physical
Justin K. George, Ashish Yadav, Nishith Verma
Summary: A hierarchical porous structured carbon micro-nanofiber containing nickel and ceria nanoparticles was synthesized for electrochemical hydrogen storage, showing high hydrogen storage capacity and excellent cyclic stability. Ni-CeO2-CNF/ACF electrode demonstrated economically viable and efficient hydrogen storage properties with 99% cycle retention capacity and 97.6% charge-discharge efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Lin Peng, Meixiu Qu, Rui Sun, Weiwei Yang, Zhenhua Wang, Wang Sun, Yu Bai
Summary: In this study, an ultrathin layer of Ni(OH)2 was introduced onto the surface of Ni2P, leading to enhanced electrochemical performance of Li-S batteries. The Ni(OH)2 layer strengthened chemical immobilization of LiPSs and accelerated LiPS conversion and Li2S deposition. This work provides insights into the design of high-performance Li-S batteries through a surface reconstruction strategy.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Consolato Rosmini, Tanya Tsoncheva, Daniela Kovatcheva, Nikolay Velinov, Hristo Kolev, Daniela Karashanova, Momtchil Dimitrov, Boyko Tsyntsarski, David Sebastian, Maria Jesus Lazaro
Summary: Ceria-iron oxide mesoporous materials were modified with Ni-Fe alloys and further transformed into ferrous carbides and metal alloys encapsulated within carbon nanofibers. The modified phases showed high electrochemical activity and low overpotential in the Oxygen Evolution Reaction. The morphological, textural and physicochemical properties of the samples were characterized in detail.
Article
Chemistry, Physical
Xia Gao, Huibin Pan, Chengfang Qiao, Yongliang Liu, Chunsheng Zhou, Quanguo Zhai, Mancheng Hu, Shuni Li, Yucheng Jiang
Summary: Porous materials Co3O4 and Co/C with hierarchical structure were prepared by self-sacrificial template strategy and functionalized with a bionic membrane for entrapping enzyme. The modified materials showed high catalytic activity, thermal stability, and reusability. Moreover, the enzyme immobilized materials exhibited extreme catalytic efficiency for pollutant degradation in simulated wastewater.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Hui Liu, Jianhang Sun, Ziqi Xu, Weiying Zhou, Ce Han, Guocheng Yang, Yuping Shan
Summary: In this study, a non-Pt electrocatalyst, Ru/Ni-V2NO/NCNFs, was successfully synthesized. It consists of Ru nanoparticles and Ni-V2NO heterostructures. The integration of Ru nanoparticles and Ni-V2NO heterostructures can regulate the electronic structure of Ru and improve HER performance. Additionally, the introduction of Ni-V2NO heterostructures enhances the exposure of active sites, leading to further improvement in HER performance.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Thermodynamics
Shuping Zhang, Haoxin Yin, Jiaxing Wang, Shuguang Zhu, Yuanquan Xiong
Summary: The study synthesized novel Ni nanoparticles embedded carbon nanofiber/porous carbon catalysts for catalytic cracking of biomass tar, which exhibited favorable catalytic activity and stability. The catalyst showed a good activity-structure relationship, effectively inhibiting coke deposition and sintering of metallic Ni.
Article
Energy & Fuels
Xiao Liu, Hongwei Liu, Liang Lv, Yongzhen Wang, Jun Liu
Summary: In this study, a new OER catalyst was prepared using lignite as the raw material, which not only makes high-value use of lignite, but also meets the research and development needs for new energy materials. A novel Fe/Fe3C active species was reported as a promising catalyst to replace precious metals. By catalytic pyrolysis of lignite using KOH and FeCO3, Fe3C@C/CNT hybrid materials with a special core-shell structure were prepared, and it showed great application potential as an OER catalyst. This work provides a new idea for the high-value-added utilization of lignite and contributes to improving its economic benefits.
Article
Engineering, Chemical
Bhaskar Bhaduri, Rishabh Anand Omar, Nishith Verma
Summary: The present study synthesizes carbon nanofibers (CNF) over a graphitic carbon nitride (g-C3N4) substrate without requiring an external carbon-source. In this novel route of the synthesis, g-C3N4 acts as the substrate as well as the internal source of carbon. Ni nanoparticles (NPs) dispersed in g-C3N4 catalyze the decomposition of triazine rings and N heterocycles in the material to form a web of CNF over g-C3N4. Tested for its catalytic activity towards the reduction of aqueous nitrobenzene (NB) using the hydrazine monohydrate reducing agent, Ni-CNF/g-C3N4 shows an approximately 95% conversion of NB. The high catalytic activity of the material is ascribed to the combined effects of g-C3N4, Ni NPs, and CNF. The present study has clearly established an efficient, easy, and inexpensive route for synthesizing CNF-based 3D nanostructures that are useful in many engineering applications including energy and environment.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Electrochemistry
Haider Ali, Nishith Verma
Summary: A folic acid sensor based on Ni-tipped carbon nanofibers was developed using UV-Vis spectroelectrochemical technique. The sensor showed high sensitivity and resistance to interference, and was successfully tested in commercial multivitamin tablets.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Guizheng Liu, Jiajie Pan, Junhao Li, Zikang Chen, Qilan Chen, Yongxian Lin, Jie Ren, Kaixiang Shi, Quanbing Liu
Summary: In this study, nickel nanoparticles (Ni NPs) were used as a catalyst to induce the growth of villus cavity carbon nanotubes (CNTs) inside N-doped hollow carbon nanofibers (NHCF), which were attached to active silicon nanoparticles (Si NPs), forming an adaptive conductive and mechanical carbon network (Si@Ni-CNTs@NHCF). The Ni catalytic activity of Ni-CNTs contributed to the balanced behavior of lithiation and de-lithiation, improving the structural compatibility and long-cycle stability of the electrode. The findings deepen our understanding of structural modification for stable lithiation and de-lithiation cycling processes for Si/C anodes.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Energy & Fuels
Jiaxing Wang, Shuping Zhang, Yinhai Su, Shuguang Zhu
Summary: In this study, a carbon-based metal catalyst was prepared using sawdust as raw material, and Fe embedded graphene nanoshell/carbon nanofibers catalyst was prepared by impregnation and carbothermal reduction in CO2 atmosphere. During CO2 etching and FeCl3 catalysis, a structure was formed where carbon nanofibers/graphene shells wrapped metallic iron deposited on the porous carbon support.
Article
Chemistry, Inorganic & Nuclear
Xinyi Lin, Jina Ding, Xiaohua Li, Zhuo Tang, Hongbing Chen, Huan Dong, Anhua Wu, Linwen Jiang
Summary: This study effectively regulates the too-fast electron-hole pair compounding in photocatalysis by using the polarization field of pyroelectric materials, providing a new approach to pyroelectric catalytic degradation of organic pollutants.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Dong Hyun Ko, Seok Chang Kang, Chul Wee Lee, Ji Sun Im
Summary: By investigating the effects of porous properties of supports on Co-Mo/MgO catalysts, it was found that improving the pore structure of MgO enhances the dispersibility of Co active metal, thereby improving methane conversion and multi-walled carbon nanotube (MWCNT) production.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Chemistry, Physical
Yury Shubin, Yury Bauman, Pavel E. Plyusnin, Ilya Mishakov, Maria S. Tarasenko, Maxim S. Mel'gunov, Vladimir O. Stoyanovskii, Aleksey A. Vedyagin
Summary: In this study, sponge-like porous Ni-Mo-W alloys were prepared as catalysts for the catalytic chemical vapor deposition of 1,2-dichloroethane. The synthesis of the alloys was performed via high-temperature reductive thermolysis of multicomponent precursors, showing synergistic effects of Mo and W on process efficiency during the decomposition of 1,2-dichloroethane. The catalytic activity of the alloys was studied in a flow-through reactor at 600 degrees C for 2 hours.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
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.