Article
Multidisciplinary Sciences
Martina Darmanin, Antje Froehling, Sara Bussler, Julia Durek, Susanne Neugart, Monika Schreiner, Renald Blundell, Ruben Gatt, Oliver Schlueter, Vasilis P. Valdramidis
Summary: This study found that the combined treatment of mung bean seeds with direct air CAP and air PAW did not negatively impact seed germination and growth, while reducing the microbial population in sprouts. Additionally, sustained plasma treatment through irrigation with PAW significantly enhanced seedling growth, supporting further applications of plasma in the agro-food industry.
SCIENTIFIC REPORTS
(2021)
Article
Physics, Applied
Nicholas S. L. Chew, Chien W. W. Ooi, Leslie Y. Y. Yeo, Ming K. K. Tan
Summary: We demonstrate the synergistic effects of combining atmospheric pressure plasma generation with aerosolization of plasma-activated water using direct current electrospraying for effective chemical-free spray-based surface disinfection. The DC electrospray acts as a secondary plasma generation source, enhancing the activation of water and increasing the concentration of reactive species in the aerosols, leading to enhanced bacteria inactivation efficacy. Additionally, pretreating stainless steel surfaces using this hybrid spray-deposition technique before pathogen exposure results in almost complete inactivation of bacteria colonies.
PLASMA PROCESSES AND POLYMERS
(2023)
Article
Infectious Diseases
Ewa Wielogorska, Padrig B. Flynn, Julie Meneely, Thomas P. Thompson, William G. Graham, Brendan F. Gilmore, Christopher T. Elliott
Summary: This study presents a comprehensive evaluation of cold atmospheric pressure plasma technology (CAPP) for the removal of β-lactam antibiotic residues. Optimized operating parameters were identified, and the highest degradation efficiencies were achieved using a helium jet operated at 6 kV. The main by-products detected indicate that pH-driven peroxidation is the main mechanism of CAPP-induced decomposition of β-lactams. No hepatocytotoxicity was observed in HepG2 cells, and E. coli exposed to CAPP-degraded β-lactams did not develop resistance. Over 50% decrease in antibiotic levels was achieved after only 5 min of treatment in surface water, but treatment efficiency depended on residue concentration, pH, and the presence of polar macromolecules.
Article
Physics, Fluids & Plasmas
Renze Yu, Zhaoyuan Liu, Jiao Lin, Xinyi He, Linsheng Liu, Qing Xiong, Qiang Chen, Kostya (Ken) Ostrikov
Summary: The study found that in DC plasma-liquid systems, the production of H2O2aq is 8-12 times higher when the liquid acts as a cathode compared to when it acts as an anode. Additionally, the rate of conversion from gaseous OH radicals to H2O2aq is 4-6 times greater when the liquid is a cathode.
PLASMA SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Jacob Manzi, Ariel E. E. Weltner, Tony Varghese, Nicholas McKibben, Mia Busuladzic-Begic, David Estrada, Harish Subbaraman
Summary: This paper demonstrates the use of plasma-jet printing (PJP) to deposit thermoelectric nanoflakes onto flexible substrates at room temperature, with substantial improvements in material adhesion and flexibility observed. The printed films exhibit electrical conductivity of 2.5 x 10(3) S m(-1) and a power factor of 70 mu W m(-1) K-2 at room temperature. This advancement in plasma jet printing promotes not only the development of energy harvesting but also large-scale flexible electronics and sensors for space and commercial applications.
Article
Engineering, Chemical
Mohammad Kazemi, Hamed Taghvaei
Summary: Efficient and economical methods for water recovery are in high demand due to recent water crisis caused by growing water demands. Cold atmospheric plasma technology has attracted attention for its chemical and physical effects in removing contaminants from wastewater. Experimental results with multi array dielectric barrier discharge (MADBD) plasma gas diffuser show that ozone (O-3) plays a key role in decolorization of water, with high efficiency and decolorization rate.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Biochemistry & Molecular Biology
Sung Un Kang, Chul-Ho Kim, Sanghyun You, Da-Young Lee, Yu-Kwon Kim, Seung-Joo Kim, Chang-Koo Kim, Hee-Kyung Kim
Summary: The efficiency of plasma surface modifications depends on the operating conditions. This study investigated the effect of chamber pressure and plasma exposure time on the surface properties of 3Y-TZP with N-2/Ar gas. The atmospheric plasma treatments increased zirconia's electron donation (?(-)) capacity, while the vacuum plasma treatments decreased ?(-) parameter with increasing times.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Engineering, Environmental
Jiao Lin, Jishen Zhang, Renwu Zhou, Li Guo, Dingxin Liu, Mingzhe Rong, Michael G. Kong, Kostya (Ken) Ostrikov
Summary: Pathogenic microorganisms pose a global threat to public health and environment. Electrolyzed oxidizing water (EOW) is a promising environment-friendly alternative disinfectant, but its production processes and mechanisms are unclear. This study presents an effective hybrid plasma electrochemical EOW production process and reveals the mechanisms by combining nonthermal plasmas and a two-chamber electrochemical cell separated by a cation exchange membrane (CEM). The study also explores the antibacterial ability of EOW produced under different conditions.
Article
Metallurgy & Metallurgical Engineering
Kenta Nakazawa, Tatsuki Ohashi, Shotaro Saiki, Shoichi Kikuchi
Summary: The method of hardening AZ31 magnesium alloy using an atmospheric-pressure plasma jet at room temperature by exciting oxygen and nitrogen molecules to form an oxynitrided layer has been developed. This promising approach enhances the hardness of magnesium alloys without the need for heat treatment.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Metallurgy & Metallurgical Engineering
Kenta Nakazawa, Tatsuki Ohashi, Shotaro Saiki, Shoichi Kikuchi
Summary: Surface-hardening treatment for AZ31 magnesium alloy was achieved using an atmospheric-pressure plasma jet at room temperature, resulting in the formation of an oxynitrided layer and oxygen and nitrogen diffusion layer, which increased the hardness of the alloy. This method is a promising approach for locally hardening magnesium alloys without the need for heat treatment.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Food Science & Technology
Anna Hauswirth, Robert Koehler, Lars ten Bosch, Georg Avramidis, Christoph Gerhard
Summary: This study focused on the degrading effects of cold atmospheric pressure plasmas (CAPP) on sugars, such as glucose and sucrose. The results showed reduced crystallinity and changes in bonds after CAPP treatment.
Article
Food Science & Technology
Sarmistha Mitra, Mayura Veerana, Eun-Ha Choi, Gyungsoon Park
Summary: Pre-treatment with NTAPPJ or PTW can improve the antibacterial quality of mushroom surfaces by decreasing bacterial attachment (for NTAPPJ) and increasing bacterial lipid peroxidation (for both NTAPPJ and PTW).
Article
Environmental Sciences
Ana Kovacic, Martina Modic, Natasa Hojnik, Anja Vehar, Tina Kosjek, David Heath, James L. Walsh, Uros Cvelbar, Ester Heath
Summary: This study investigates the use of Cold Atmospheric pressure Plasma (CAP) for the removal of Bisphenol A (BPA) and Bisphenol S (BPS), two endocrine disrupting compounds, in water and wastewater. The results show that CAP technology is effective in degrading both BPA and BPS, with BPA degrading faster than BPS. The study also identifies several transformation products for both compounds.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Elias Abedelnour, Stephanie Ognier, Mengxue Zhang, Laurent Schio, Olivier Venier, Janine Cossy, Michael Tatoulian
Summary: The direct N-acylation of amines by esters in a microreactor using argon plasma is presented, resulting in high yields of amides.
CHEMICAL COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Kangwei Li, Yunlong Guo, Sergey A. Nizkorodov, Yinon Rudich, Maria Angelaki, Xinke Wang, Taicheng An, Sebastien Perrier, Christian George
Summary: Hydroxyl radicals (OH) play a crucial role as oxidants in atmospheric chemistry, and their aqueous sources have been mainly attributed to known bulk processes or interfacial chemistry driven by O3 and NO3 radicals. This study provides experimental evidence that OH radicals can be spontaneously produced at the air-water interface of aqueous droplets, even in the absence of known precursors, possibly due to the strong electric field formed at such interfaces. The measured OH production rates in atmospherically relevant droplets are comparable to or higher than those from known bulk sources, particularly in the dark. As aqueous droplets are widespread in the troposphere, this interfacial source of OH radicals is expected to have significant impacts on atmospheric multiphase oxidation chemistry, with implications for air quality, climate, and health.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Engineering, Chemical
Jia-Yin Lin, Min-Hao Yuan, Kun-Yi Andrew Lin, Chia-Hua Lin
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2019)
Article
Engineering, Environmental
Chia-Chi Chang, Yen-Hau Chen, Wei-Ren Chang, Chao-Hsiung Wu, Yi-Hung Chen, Ching-Yuan Chang, Min-Hao Yuan, Je-Lueng Shie, Yuan-Shen Li, Sheng-Wei Chiang, Tzu-Yi Yang, Far-Ching Lin, Chun-Han Ko, Bo-Liang Liu, Kuang-Wei Liu, Shi-Guan Wang
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
(2019)
Article
Engineering, Chemical
Hirotaka Sone, Shuhei Yoshida, Takuya Kageyama, Manabu Tanaka, Takayuki Watanabe
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
(2020)
Article
Green & Sustainable Science & Technology
Yan-Jhang Chen, Tang-Yu Fan, Li-Pang Wang, Ta-Wui Cheng, Shiao-Shing Chen, Min-Hao Yuan, Shikun Cheng
Article
Materials Science, Multidisciplinary
Hirotaka Sone, Shuhei Yoshida, Manabu Tanaka, Takayuki Watanabe
MATERIALS RESEARCH EXPRESS
(2020)
Article
Physics, Applied
Manabu Tanaka, Yuki Saito, Hiroki Maruyama, Takayuki Watanabe
JAPANESE JOURNAL OF APPLIED PHYSICS
(2020)
Article
Physics, Applied
Naoki Sakura, Masaki Yoshida, Manabu Tanaka, Takayuki Watanabe
JAPANESE JOURNAL OF APPLIED PHYSICS
(2020)
Article
Astronomy & Astrophysics
Junya Matsuno, Akira Tsuchiyama, Takayuki Watanabe, Manabu Tanaka, Aki Takigawa, Satomi Enju, Chiyoe Koike, Hiroki Chihara, Akira Miyake
Summary: Interplanetary dust particles contain GEMS, considered building blocks of the solar system, can form via melt condensation of high-temperature gases. They may be formed in the local environment of a protosolar disk or around evolved stars.
ASTROPHYSICAL JOURNAL
(2021)
Article
Engineering, Chemical
Xiaoyu Zhang, Yiran Wang, Byeong-Il Min, Eri Kumai, Manabu Tanaka, Takayuki Watanabe
Summary: Carbon coated silicon nanoparticles have been recognized as a promising anode material for future lithium ion batteries, but the development of a cost-effective and environmentally friendly preparation method remains a challenge. This research proposes a controllable synthesis method for silicon nanoparticles with amorphous hydrogenated carbon coating, utilizing induction thermal plasma. By adjusting the ratio of tangential and radial gas flow rates, the plasma properties can be tuned to modify the compositions and properties of synthesized particles. Higher tangential gas flow rates can eliminate the formation of SiC, leading to improved capacity of silicon anode for batteries.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Chemistry, Physical
Xiaoyu Zhang, Byeong-Il Min, Yiran Wang, Ririko Hayashida, Manabu Tanaka, Takayuki Watanabe
Summary: Silicon nanoparticles coated with carbon coating can solve stability issues in lithium ion batteries, and the use of induction thermal plasma synthesis technology can achieve this goal, introducing a new injection method to limit unfavorable byproducts. The choice of appropriate carbon sources has a significant influence on the properties and thermal decomposition of the carbon coating.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Engineering, Chemical
Xiaoyu Zhang, Kentaro Yamano, Ririko Hayashida, Manabu Tanaka, Takayuki Watanabe
Summary: In this study, carbon coated silicon nanoparticles were prepared using induction thermal plasma, and the effect of methane injection methods was investigated. It was found that when the methane injection position was near the plasma torch, SiC, a byproduct that limits the battery capacity, was formed. By adjusting the methane injection position, the properties of the synthesized carbon coatings, including the sp(2) ratio and H content, could be controlled. These findings are important for the synthesis of carbon coated silicon nanoparticles and the design of high energy density lithium-ion batteries.
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
(2022)
Article
Chemistry, Inorganic & Nuclear
Yiran Wang, Xiaoyu Zhang, Byeong-Il Min, Manabu Tanaka, Takayuki Watanabe
Summary: The synthesis of amorphous Li3BO3 was successfully conducted using induction thermal plasma, and the formation mechanism was systematically investigated. Various characterization techniques were employed to understand the morphology and chemical composition of the products. It was found that higher O2 and quenching gas flow rates resulted in a higher degree of amorphous Li3BO3, but also increased the possibility of by-product formation.
JOURNAL OF SOLID STATE CHEMISTRY
(2023)
Article
Chemistry, Physical
Yiran Wang, Byeong-Il Min, Manabu Tanaka, Takayuki Watanabe
Summary: Induction thermal plasma has been widely used for the synthesis of amorphous nanoparticles. In this study, amorphous Li4GeO4 nanoparticles were successfully synthesized by adjusting the Li/Ge molar ratio and quenching gas flow rate in the induction thermal plasma. The product morphology and chemical composition were characterized using transmission electron microscopy, X-ray diffraction, and Raman spectroscopy. The formation mechanism was investigated based on experimental results and thermodynamic analysis. The results showed that an enhanced amorphous degree of Li4GeO4 nanoparticles could be achieved by controlling the Ge content and quenching rate.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Kazumasa Oshima, Hiromichi Kondo, Eriko Konishi, Tsuyoshi Yamamoto, Yoshifumi Tsuge, Takayuki Watanabe, Masahiro Kishida
Summary: The study investigated the effective removal of As(iii) from wastewater by catalytic oxidation to As(v) and precipitation with Fe(iii) ions. The combination of Pt/SiO2 catalyst and Fe(iii) precipitant improved the removal efficiency of As(iii) by functioning as both oxidation and precipitation sites.
Article
Engineering, Multidisciplinary
Malee Santikunaporn, Tattep Techopittayakul, Snunkheam Echaroj, Sumaeth Chavadej, Yi-Hung Chen, Min-Hao Yuan, Channarong Asavatesanupap
ENGINEERING JOURNAL-THAILAND
(2020)
