Article
Chemistry, Applied
M. Magureanu, N. B. Mandache, F. Gherendi, C. Rizescu, B. Cojocaru, A. Primo, H. Garcia, V. Parvulescu
Summary: Plasma treatment in a hydrogen glow discharge significantly improves the catalytic activity of graphene oxide by inducing defects and surface acidic species. Optimal treatment can be achieved by tuning the electron temperature and dissociation of molecular hydrogen in the plasma, as revealed by optical emission spectroscopy diagnostics.
Article
Chemistry, Multidisciplinary
Jianpeng Liu, Wenchang Zhang, Chang Cheng, Juncheng Zhu, Tianle Wang, Kun Ni, Zifeng Lin, Zefeng Guan, Yanwu Zhu, Jiliang Zhu
Summary: This study presents a rapid reduction method for graphene oxide (GO) by bringing GO foam into contact with semi-molten metals such as tin (Sn) and lithium (Li). The electrical resistance of GO foam is significantly reduced by its interaction with these metals, even in dry air. By employing tin foil and calcination, the rGO with remarkably lower electrical resistivity is fabricated, demonstrating its potential as an electrode material for lithium-sulfur batteries.
Review
Chemistry, Multidisciplinary
Sri Hari Bharath Vinoth Kumar, Ruslan Muydinov, Bernd Szyszka
Summary: The investigation and development of reduced graphene oxide (rGO) derived from graphene oxide (GO) have made significant progress in the past decade. Despite having relatively inferior electronic characteristics compared to pristine graphene, rGO's high-yield production from inexpensive graphite and ease of fabrication with solution processing have led to its potential for large-scale applications and commercialization. The mature use of plasma technologies for GO reduction has unique merits and could expedite the pathway to commercialization, with applications across multiple fields in nanotechnology.
Article
Chemistry, Multidisciplinary
Qianhan Han, Ying Guo, Yarong Zhang, Jing Zhang, Jianjun Shi
Summary: In this experimental study, a plasma plume generated by radio frequency atmospheric pressure glow discharge was enhanced in terms of length and intensity by pulsed discharge. The enhanced plume was used to improve the O/C ratio of carbon fiber.
APPLIED SCIENCES-BASEL
(2022)
Article
Engineering, Chemical
Shaoyong Huang, Quanjia Huang, Jiaming Gan, Ting Li, Lei Wang
Summary: In this study, Fe-rich sludge was used as a Fenton catalyst for the degradation of 2,4-D in aqueous solution. The Fe-rich sludge pretreated by H-2-DBD significantly accelerated the 2,4-D degradation. Synergistic mechanism of the two plasmas during 2,4-D degradation was explored. The study provides a potential method for the recycle of Fe-rich sludge as a novel and cost-effective catalyst for 2,4-D removal from aqueous environments.
PLASMA CHEMISTRY AND PLASMA PROCESSING
(2023)
Article
Chemistry, Analytical
Krzysztof Greda, Maja Welna, Anna Szymczycha-Madeja, Pawel Pohl
Summary: For the first time, a dispersive micro-solid phase extraction (D-mu SPE) based on graphene oxide was used for the ultrasensitive determination of Cd. With this method, Cd can be efficiently extracted from a mixture of alkali and alkaline earth metals without the need for an elution step. The combination of D-mu SPE and SAGD OES significantly reduces matrix effects and improves the tolerance of Cd to alkali metals. The method shows simplicity in the measurement system and the commercially available nanosorbent used.
MICROCHEMICAL JOURNAL
(2024)
Article
Materials Science, Multidisciplinary
Ahmad Chaim, Heba Abunahla, Baker Mohammad, Nahla Alamoodi, Anas Alazzam
Summary: The development of flexible memristor devices using paper-based graphene oxide has great potential for wearable electronics. The PrMem device, made of cellulose and reduced graphene oxide, demonstrates resistive switching properties and eliminates the need for additional pumping structures due to its hydrophilic nature. The research opens up new possibilities for using paper-based memristor devices in various applications.
Article
Chemistry, Analytical
Krzysztof Greda, Maja Welna, Anna Szymczycha-Madeja, Pawel Pohl
Summary: By combining ICP OES with a novel FIGA mode, a more sensitive determination of Hg was achieved. The proposed method showed a much higher analytical signal for Hg compared to conventional PN-ICP OES, resulting in a significantly improved detection limit (0.035 μg/L) and measurement precision (2.5%). It also offered a 4 times lower detection limit compared to CVG-ICP OES (0.15 μg/L).
Article
Food Science & Technology
Yue Tong, Yonggang Yue, Mengxing Hou, Tiantian Zhang, Zhijian Lu, Lanjun Yang, Peiling Liu
Summary: Glow discharge plasma (GP) was used to investigate the hydration mechanism of whey protein with varying moisture content. The strongest hydration effect was observed at a moisture content of 20%. Fourier transform infrared spectroscopy (FTIR) results confirmed enhanced hydrogen bonding, with a shift in signals from 3283.49 cm-1 to 3286.26 cm-1. The treated whey protein exhibited a more flexible structure, with decreased alpha-helix and beta-sheet content, as well as reduced crystallinity degree. Oxidation reactions and the formation of disulfide bonds were also observed. Scanning electron microscopy (SEM) showed highly aggregated and porous polymers. The treated whey protein displayed higher antioxidant activity, improved water/oil holding capacity, and increased light transmittance.
INNOVATIVE FOOD SCIENCE & EMERGING TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Zhiyuan Xiong, Pei Yu, Qinghua Liang, Dan Li
Summary: This study presents a rapid microwave reduction method for electrochemically-derived graphene oxide (EGO), which can transform EGO membranes into high-crystalline graphene membranes in just 3 seconds. The efficiency of microwave reduction is attributed to the unique molecular structure of EGO, which enables efficient microwave absorption and transient volumetric heating.
SCIENCE CHINA-MATERIALS
(2023)
Article
Materials Science, Coatings & Films
Kei Kiyokawa, Reiko Saito, Masato Morita, Tetsuo Sakamoto
Summary: This article investigates the impact of metal redeposition on the sputtering rate in ion sputtering and finds that redeposition significantly enhances the rate. The experimental data align with the model equation, explaining the sputtering by desorbed redeposited metal and the reduction of sublimation enthalpy by adsorbed redeposited metal. This finding provides new insights for the application of sputtering technology.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2022)
Article
Forestry
Zirun Xiao, Ruyi Ai, Yanan Wang, Liying Xu, Jingkui Li
Summary: This study successfully constructed an aluminum superhydrophobic nano-coating on wood using magnetron sputtering, which improves the hydrophobicity and service life of wood. The nano-clusters and voids structure formed by the coating provide the superhydrophobic properties.
Article
Engineering, Chemical
Hailong Lin, Wei Wang, Oleg Kikhtyanin, David Kubicka, Zhaolu Feng, Chunmu Guo, Xuefeng Bai, Linfei Xiao, Wei Wu
Summary: A novel method of in-situ glow discharge plasma reduction is introduced to prepare highly effective bifunctional catalysts for long-chain n-alkane hydroisomerization. The catalysts exhibit higher yield and stability, providing an effective pathway for the development of clean biodiesel.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Chemistry, Physical
Frantisek Zelenak, Maria Kovacova, Zdenek Moravec, Mirko Cernak, Richard Krumpolec
Summary: This study presents a scalable, fast, safe, and eco-friendly method for preparing highly conductive rGO thin paper. The method involves the use of a plasma source and spraying cycles to prepare thin GO paper, followed by rapid GO reduction-exfoliation to create highly porous rGO paper within seconds. The short duration and scalability of this method make it suitable for large-scale industrial applications.
Article
Engineering, Environmental
Bihe Yuan, Yong Wang, Gongqing Chen, Fangzhou Yang, Hongming Zhang, Chengran Cao, Boyu Zuo
Summary: Boric acid-modified graphene oxide (GO-BA) paper, constructed with a nacre structure, shows improved thermal-oxidative stability and can rapidly thermally reduce to conductive reduced graphene oxide under flame exposure, providing a quick flame-detection time for ideal fire-alarm response.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
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
Materials Science, Multidisciplinary
Yanzhe Zhu, Renbo Zhu, Fandi Chen, Shuo Zhang, Yu-Chieh Kuo, Peiyuan Guan, Mengyao Li, Yunjian Liu, Zhaojun Han, Tao Wan, Dawei Wang, Caiyun Wang, Dewei Chu
Summary: In this study, a flexible quasi-solid-state Ag-Zn battery system with superior performance was developed by using mild electrolyte and binder-free electrodes. The introduction of a copper foam current collector impedes the growth of Zn dendrite, and the structure of Ag cathode is engineered to improve the areal capacity. This battery demonstrates remarkable cycle retention and high energy density.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Engineering, Manufacturing
Zhao Sha, Xinying Cheng, Mohammad S. Islam, Pichsinee Sangkarat, Wenkai Chang, Sonya A. Brown, Shuying Wu, Jin Zhang, Zhaojun Han, Shuhua Peng, Chun H. Wang
Summary: This study introduces a hybrid method to enhance the electrical conductivity of carbon fibre reinforced polymers (CFRPs) by functionalizing carbon fibres with vertical graphene (VG) and modifying the matrix with silver nanowires (AgNWs). The results showed a significant increase in through-thickness and in-plane electrical conductivities without affecting mechanical properties. Finite element modelling and computational modelling explained the synergy and demonstrated the reduction in joule heat density under lightning strike conditions.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(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)
Review
Chemistry, Multidisciplinary
Jae Muk Lim, Young Seok Jang, Hoai Van T. Nguyen, Jun Sub Kim, Yeoheung Yoon, Byung Jun Park, Dong Han Seo, Kyung-Koo Lee, Zhaojun Han, Kostya (Ken) Ostrikov, Seok Gwang Doo
Summary: To achieve a zero-carbon-emission society, increasing the use of clean and renewable energy is crucial. However, renewable energy resources have limitations in terms of geographical locations and limited time intervals for energy generation. Therefore, there is a rising demand for high-performance energy storage systems (ESSs) to effectively store and utilize energy during peak and off-peak periods. Supercapacitors, particularly electrical double layer capacitors (EDLCs), show promise as short-term ESSs due to their long cycle retention, high power densities, fast charge/discharge characteristics, and moderate operating voltage window. However, further research is needed to increase the operating voltage and energy densities of EDLCs while maintaining long-term cycle stability and power densities, which are crucial for ESS operation. This article examines advancements in EDLC research to achieve a high operating voltage window and high energy densities for next-generation supercapacitor-based ESSs.
NANOSCALE ADVANCES
(2023)
Article
Nanoscience & Nanotechnology
Peiyuan Guan, Jie Min, Fandi Chen, Shuo Zhang, Long Hu, Zhipeng Ma, Zhaojun Han, Lu Zhou, Haowei Jia, Yunjian Liu, Neeraj Sharma, Dawei Su, Judy N. Hart, Tao Wan, Dewei Chu
Summary: In this study, a defect-rich SrTiO3-x coating was applied on a Ni-rich layered cathode (LiNi0.8Co0.15Al0.05O2) to enhance its electrochemical performance. The optimized sample exhibited a high discharge capacity of around 170 mA h/g after 200 cycles at 1C rate, with a capacity retention of over 81.1%. Postmortem analysis revealed that the SrTiO3-x coating not only alleviated the growth of internal resistance due to uncontrollable cathode-electrolyte interface evolution but also served as a lithium diffusion channel during prolonged cycling. This work presents a feasible strategy for improving the electrochemical performance of high-nickel content layered cathodes for next-generation LIBs.
ACS APPLIED MATERIALS & INTERFACES
(2023)
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)
Article
Chemistry, Physical
Lingyi Peng, Ding Zhang, Zhipeng Ma, Dewei Chu, Claudio Cazorla, Rose Amal, Zhaojun Han
Summary: This paper reports a pH-universal HER catalyst Ru/a-Ni-MoO3, which shows superior performance compared to the commercial Ru/C catalyst. The electron transfer from Ru to a-Ni-MoO3 is identified, leading to a modified electronic structure of the Ru active sites. Density functional theory calculations reveal that the modulated electronic structure facilitates the interactions between the Ru active sites and the reaction intermediates, promoting the HER reaction steps. The experimental and theoretical findings provide insights into enhancing pH-universal HER performance.
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.
