Review
Chemistry, Physical
Marianna Kharlamova, Maria G. Burdanova, Maksim Paukov, Christian Kramberger
Summary: This review focuses on the importance of synthesizing high-quality chirality-pure single-walled carbon nanotubes, as well as research directions such as chirality-selective synthesis, sorting of SWCNTs, and applications of separated SWCNTs in various fields.
Article
Nanoscience & Nanotechnology
Sophia Zanoni, Brennan P. Watts, Kevin Tvrdy
Summary: Despite the commercial availability of many different hydrogel formulations, the effective gel-based purification of single-walled carbon nanotubes (SWNT) remains exclusive to Sephacryl S-200. In this study, various commercially available gels and custom-synthesized gels were investigated for their ability to purify SWNT, with findings showing that different gels exhibit unique SWNT chiral selectivity and physiochemical properties. Superose 6 was found to adsorb more SWNT than Sephacryl S-200 and exhibit a unique preference for specific SWNT chiralities, providing insights into the rational design of gels for SWNT purification.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Hai-Ning Zhang, Yin Fan, Hui-Shen Shen
Summary: This study analyzed the engineering Poisson's ratio (EPR) and incremental Poisson's ratio (IPR) of single-walled carbon nanotubes (SWCNTs) with different chiral angles and investigated the effect of chirality on rigidity. It was found that SWCNTs with different chiral angles exhibited different mechanical properties in terms of EPR and IPR in tension, compression, longitudinal, and radial directions. The critical strain for auxeticity was also found to be chirality-dependent. Additionally, a method for explaining the negative IPR phenomenon was proposed based on the contribution to radial strain.
Article
Materials Science, Multidisciplinary
W. M. Moslem, A. S. El-Said, R. E. Tolba, H. Bahlouli
Summary: Ion beam technology is efficiently used to modify the properties of nanomaterials. This study focuses on the structural modifications of carbon nanotubes using highly energetic heavy ions. The irradiation with high ion fluence induces significant topographic changes along the nanotubes. A hydrodynamic fluid model is introduced to explain the observed results by investigating the ion-induced plasma. The calculations show a qualitative coincidence between the evolution of the periodic electric potential and the observed broken nanostructured segments along the nanotube.
RESULTS IN PHYSICS
(2022)
Article
Chemistry, Physical
Yan Gao, Fangqian Han, Yahan Li, Xiaofan Qin, Dong Li, Qianru Wu, Guangyi Lin, Xiuyun Zhang, Maoshuai He
Summary: This study developed a supported catalyst that resists sintering and successfully synthesized SWNTs with a narrowly distributed chirality by incorporating Co in the supported catalyst. The addition of Pd promoter further optimized the catalytic reaction conditions, achieving preferential synthesis of (6, 5) SWNTs.
Article
Chemistry, Multidisciplinary
Dayan Liu, Kai Xiang, Shuchen Zhang, Ying Wang, Hongjie Zhang, Taibin Wang, Feng Yang, Ran Du, Jinjie Qian, Zhi Yang, Yue Hu, Shaoming Huang
Summary: This study reports the co-realization of high density and chirality controlling of single-walled carbon nanotubes (SWNTs) in a low-temperature growth process using a developed solid Trojan catalyst. The high temperature Trojan catalyst formation process provides sufficient catalyst number for high density. The liquid Trojan catalysts are cooled to solid state at a low growth temperature (540 degrees C), acting as a good template for chirality controlling of SWNTs with the six-fold symmetry face (111). A horizontal array of (9, 6) and (13, 1) SWNTs with a density of 4 tubes μm(-1) and approximately 90% purity is achieved. The comparison between the initial catalyst distribution and the density of as-grown tubes indicates no sacrificing of catalysts number to improve chirality selectivity. This work opens up new possibilities for catalyst design and chirality control in SWNTs growth.
Article
Chemistry, Physical
M. Dolan, B. P. Watts, K. Tvrdy
Summary: An alternative approach for understanding and advancing hydrogel-based SWNT purification has been described and employed, including experimental and atomistic modeling analysis. The role of the radical initiator APS in hydrogel-based SWNT purification has been explored through synthesis and characterization of gels containing varied APS concentration, revealing the significant impact of charged organosulfate groups on SWNT-gel interactions. This work demonstrates enhanced methodology for hydrogel-based SWNT purification and lays the foundation for further optimization of the gel medium.
Article
Chemistry, Multidisciplinary
Qidong Liu, Feng Yang, Yan Zhang, Xue Zhao, Zeyao Zhang, Sheng Zhu, Yan Li
Summary: In this study, a new intermetallic compound catalyst, CoSi2, was developed for the selective growth of carbon nanotubes by chemical vapor deposition. The catalyst showed high selectivity for the synthesis of (11, 7) tubes and high purity of semiconducting SWCNTs. However, ethanol is not suitable as a carbon feedstock due to the sensitivity of CoSi2 to oxygen-containing environments at high temperatures.
Article
Chemistry, Inorganic & Nuclear
Xue Zhao, Xiyan Liu, Feng Yang, Qidong Liu, Zeyao Zhang, Yan Li
Summary: By using graphene oxide as a support, well-dispersed CoWO4 nanoparticles were prepared to facilitate the controlled growth of single-walled carbon nanotubes. CoWO4 proved to be a superior catalyst precursor for obtaining nanoparticles with a well-controlled size, while graphene oxide acted as a feasible substrate to ensure the uniform formation and dispersibility of nanoparticles in aqueous solution. This strategy may have broad applications in the preparation of various functional nanomaterials.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Review
Energy & Fuels
Jin-Myung Choi, Jiye Han, Tushar Rane, Soyeon Kim, Ick Soo Kim, Il Jeon
Summary: This review discusses the fundamentals of utilizing SWCNTs in PSCs, including their characteristics as electron-transporting layer, hole-transporting layer, photoactive layer, and interfacial materials. It also presents strategies to improve PSCs performance through defect control and enhancement of electrical and morphological properties.
JOURNAL OF PHYSICS-ENERGY
(2022)
Article
Chemistry, Physical
Weilu Gao, Davoud Adinehloo, Xinwei Li, Ali Mojibpour, Yohei Yomogida, Atsushi Hirano, Takeshi Tanaka, Hiromichi Kataura, Ming Zheng, Vasili Perebeinos, Junichiro Kono
Summary: This study investigates the chirality-dependent electronic transport properties of single-chirality SWCNT films, revealing pronounced electronic localization phenomena and providing insights for designing and deploying macroscopic SWCNT solid-state devices. The research highlights the importance of understanding chirality-dependent behaviors in SWCNTs for various applications.
Article
Multidisciplinary Sciences
Mazen Alrahili
Summary: This study experimentally investigates the photothermal conversion efficiency of two classes of s-SWCNTs, finding that the many chiralities (MC) s-SWCNTs have a 1.88-fold higher efficiency compared to the double chiralities (DC) s-SWCNTs, resulting in a 19% decrease in the heating rate of DC.
JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE
(2022)
Article
Chemistry, Physical
Qianyu Ji, Bowen Wang, Yajuan Zheng, Xueping Yan, Fanguang Zeng, Bingheng Lu
Summary: The study introduces bulk graphene/carbon nanotubes hybrid materials for field emission applications, showcasing excellent stability and high efficiency. These bulk emitters are suitable for high-power cold cathode applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Fei-Peng Du, Hui Zhang, Jun-An Yao, Si-Ying Chen, Jin-Kun Xiao, Ping Fu, Yun-Fei Zhang
Summary: In this study, a graphene quantum dots (GQDs) intermediate layer was used to couple poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) and single-walled carbon nanotubes (SWCNTs) to enhance the thermoelectric properties. The multilayer films showed improved interfacial adhesion, enhanced electrical conductivity, and reduced thermal conductivity, resulting in an enhanced figure of merit. The strategy employed in this study provides novel insights into high-performance SWCNTs-based thermoelectric materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
S. S. Zhukov, E. S. Zhukova, A. V. Melentev, B. P. Gorshunov, A. P. Tsapenko, D. S. Kopylova, Albert G. Nasibulin
Summary: The study found that plasma treatment gradually suppresses the Drude spectral weight of SWCNTs films, while the length of nanotubes affects the carrier scattering rate and the damping of plasmon resonance. The values of ac TCR in the films significantly increase as the films cool and the frequency decreases.
Review
Materials Science, Multidisciplinary
Chuanlong Ma, Anton Nikiforov, Dirk Hegemann, Nathalie De Geyter, Rino Morent, Kostya (Ken) Ostrikov
Summary: This review presents recent advances in low-temperature plasma processing for controlling surface wettability. The underlying mechanisms, key features of fabrication processes, and water-surface interactions are discussed. It aims to guide further development of advanced functional materials.
INTERNATIONAL MATERIALS REVIEWS
(2023)
Article
Chemistry, Physical
Xin Zeng, Shuai Zhang, Xiucui Hu, Cheng Zhang, Kostya (Ken) Ostrikov, Tao Shao
Summary: With the increase in the greenhouse effect and reduction of fossil fuel resources, finding a feasible solution to directly convert power to chemicals using renewable energy is urgent. The power-to-chemicals approach, such as non-thermal plasma, electro-catalysis, and photo-catalysis, has shown great potential in the past two decades. This paper introduces the application of plasma technology in energy conversion, focusing on plasma-enabled ammonia synthesis and analyzing its state-of-the-art, mechanisms, and techno-economics. It emphasizes the importance of the power-to-chemicals approach in reducing carbon emissions and environmental pollution.
FARADAY DISCUSSIONS
(2023)
Article
Chemistry, Multidisciplinary
Amandeep Singh Pannu, Suvankar Sen, Xiaodong (Tony) Wang, Robert Jones, Kostya (Ken) Ostrikov, Prashant Sonar
Summary: Organic-inorganic hybrid lead trihalide perovskites have shown promise in various optoelectronic devices. Red-emitting perovskite-based LEDs have been less developed compared to green and blue ones. This study utilizes red-emitting 2D perovskites and carbon dots to create a stable composite material for red-emitting LEDs with improved performance.
Article
Nanoscience & Nanotechnology
Negar Zebardastan, Jonathan Bradford, Josh Lipton-Duffin, Jennifer MacLeod, Kostya (Ken) Ostrikov, Massimo Tomellini, Nunzio Motta
Summary: Face-to-face annealing is an effective method for obtaining epitaxial graphene with precise control over size, quality, growth rate and thickness.
Article
Physics, Fluids & Plasmas
Kun Liu, Wenqiang Geng, Xiongfeng Zhou, Qingsong Duan, Zhenfeng Zheng, Kostya (Ken) Ostrikov
Summary: Two modes of the atmospheric-pressure plasma discharge, characterized by the dominant O-3 and NO (x) species, were studied using numerical and experimental methods. A global chemical kinetics model was developed to investigate the mode transition mechanisms, and it accurately described the transition. The individual and synergistic effects of discharge energy and gas temperature on species density and the relative contributions of dominant reactions were quantified under increasing discharge voltage conditions.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Darwin Kurniawan, Jacob Mathew, Michael Ryan Rahardja, Hoang-Phuc Pham, Pei-Chun Wong, Neralla Vijayakameswara Rao, Kostya (Ken) Ostrikov, Wei-Hung Chiang
Summary: This study reports the development of smart anticancer drug nanocarriers through plasma engineering technique. The nanocarriers containing chitosan and nitrogen-doped graphene quantum dots can release drugs in a pH-responsive manner and exhibit enhanced toughness. The loaded nanocarriers demonstrate improved drug loading capability and stable release, showing great potential in cancer treatment.
Article
Chemistry, Multidisciplinary
Xin Zeng, Shuai Zhang, Yadi Liu, Xiucui Hu, Kostya Ken Ostrikov, Tao Shao
Summary: To meet global net-zero emission targets, sustainable and low-carbon alternatives are urgently needed for energy-intensive industrial processes like ammonia synthesis. In this study, plasma catalysis is used to achieve renewable-electricity-driven ammonia synthesis under mild conditions. By identifying energy loss pathways and optimizing process parameters, such as pulse voltage and gap distance, high ammonia yields with high energy efficiency and low emission footprint are obtained.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Rusen Zhou, Dejiang Zhou, Baowang Liu, Lanlan Nie, Yubin Xian, Tianqi Zhang, Renwu Zhou, Xinpei Lu, Kostya Ken Ostrikov, Patrick J. Cullen
Summary: The addition of helium can enhance the synthesis of ammonia by modifying the energy transfer mechanism in the plasma, leading to more efficient activation of N2 and production of NH3.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Review
Chemistry, Physical
Tianlai Xia, Yu Yang, Qiang Song, Mingchuan Luo, Mianqi Xue, Kostya (Ken) Ostrikov, Yong Zhao, Fengwang Li
Summary: Recently, electrocatalytic reactions involving oxygen, nitrogen, water, and carbon dioxide have been developed to produce clean energy, fuels, and chemicals. Understanding catalyst structures, active sites, and reaction mechanisms is crucial for improving performance. In this review, we summarize state-of-the-art in situ characterisation techniques used in electrocatalysis, categorizing them into microscopy, spectroscopy, and other techniques. We discuss the capacities and limits of these techniques to guide further advances in the field.
NANOSCALE HORIZONS
(2023)
Article
Engineering, Chemical
Liangliang Lin, Yunming Tao, Sergey A. Starostin, Chengdong Li, Hongyu Huang, Ailin He, Yingjun Wu, Volker Hessel, Kostya Ken Ostrikov
Summary: A dielectric barrier discharge (DBD) plasma was used to reactivate spent Pd/Al2O3 catalysts, and the gas composition in the plasma process affected the extent of coke elimination and electrochemical performance of the reactivated catalysts. The electrochemical performance was found to improve with the increase of gas flow rate and treatment time for Ar and N2 gases, but decrease for O2 gas. Higher oxidation degrees of Pd reduced the electrochemical performance. This study presents a new strategy for reusing waste catalysts in a simple and environment-friendly manner.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Physics, Multidisciplinary
Sanjib Sarkar, Jyoti K. Atul, Modhuchandra Laishram, Dandan Zou, Kostya (Ken) Ostrikov
Summary: The Farley-Buneman and Gradient Drift instabilities in a partially ionized dusty electrojet region were investigated using a fluid model. The effects of dissociative electron-ion recombination and dust charge fluctuation on the instabilities were considered. The dispersion relation describing the propagation of electrojet instabilities within the dust ion acoustic range in a magnetized partially ionized dusty plasma was solved numerically and analytically. The results showed that the Gradient Drift instability was unstable at a much longer wavelength compared to the Farley-Buneman instability. The threshold electron drift velocity for Farley-Buneman instability was affected by the charge on dust, with a decrease at lower altitudes and an increase at higher altitudes. Furthermore, the dissociative electron-ion recombination had a stronger damping effect than the dust charge fluctuation on both instabilities.
Article
Chemistry, Multidisciplinary
Haotian Gao, Guoli Wang, Zhongzheng Huang, Lanlan Nie, Dawei Liu, Xinpei Lu, Guangyuan He, Kostya Ken Ostrikov
Summary: Nitrogen fixation is a crucial process for various biological and industrial processes, but it is also a major source of carbon emissions globally. In this study, a novel approach using plasma-activated mist (PAM) is proposed for efficient and sustainable nitrogen fixation. The PAM system generates nitrogen-fixation species through the reaction of air plasma and water mist, and the liquid-phase nitrogen fixation product is dominated by NO3-. This system is applied to deliver nitrogen-based nutrients directly to plant roots using an aeroponic system, leading to significant improvements in plant growth.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Qilei Xu, Qianqian Wu, Chenglin Wang, Xiumei Zhang, Zhengyang Cai, Liangliang Lin, Xiaofeng Gu, Kostya (Ken) Ostrikov, Haiyan Nan, Shaoqing Xiao
Summary: This study employed a two-step KI-assisted confined-space chemical vapor deposition method to prepare multilayer WSe2/SnS2 p-n heterojunctions. The optical characterization and electrical tests revealed clear interfaces and vertical heterostructures, as well as good rectification characteristics and high photoresponse. These performances are likely attributed to the ultra-low dark current generated in the depletion region and the high direct tunneling current during illumination.
Article
Chemistry, Multidisciplinary
Hsiuan Ling Ho, Jung Yen Yang, Chun Hung Lin, Jiann Shieh, Yu Fang Huang, Yi Hong Ho, Tsung Shine Ko, Chiung Chih Hsu, Kostya (Ken) Ostrikov
Summary: The development of reliable and cost-effective molecular detection at the attomolar level on analyte-immobilizing surfaces without lithographic patterning is a challenge in chemical sensing. This study presents a novel approach using plasma etching to produce custom-designed adhesive superhydrophobic silicon nanograss surfaces. These surfaces enable effective immobilization of Ag nanoparticles and R6G target molecules, providing a reliable Raman scattering platform for detecting trace analytes. The study also introduces a plasma-enabled approach for precise interface nanostructuring, potentially leading to unprecedented capabilities in molecular-level sensing technologies.
ADVANCED MATERIALS INTERFACES
(2023)
Review
Chemistry, Multidisciplinary
Jinyong Lin, Dong Li, Changhong Li, Ziqi Zhuang, Chengchao Chu, Kostya (Ken) Ostrikov, Erik W. W. Thompson, Gang Liu, Peiyu Wang
Summary: Cancer cells are more susceptible to oxidative stress and nanomaterials-based therapies that generate reactive oxygen species (ROS) have been effective in eliminating cancer cells. These therapies, including chemodynamic therapy, photodynamic therapy, sonodynamic therapy, as well as multi-modal therapies such as combination therapy, have shown significant inhibition of tumor growth. However, the limitations of multi-modal therapy in material preparation and operation protocols hinder its clinical application. Cold atmospheric plasma (CAP), as a reliable source of ROS, light, and electromagnetic fields, provides a simple alternative for implementing multi-modal treatments. Therefore, the emerging field of tumor precision medicine is expected to benefit from these promising multi-modal therapies based on ROS-generating nanomaterials and reactive media like CAPs.