Article
Chemistry, Multidisciplinary
C. Pattyn, N. Maira, M. Buddhadasa, E. Vervloessem, S. Iseni, N. C. Roy, A. Remy, M-P Delplancke, N. De Geyter, F. Reniers
Summary: Nitrogen disproportionation in a N-2 DC plasma-driven electrolysis process with a plasma cathode is investigated. This process has gained interest for various applications, especially as a green alternative to the Haber-Bosch process for nitrogen fixation. Lowering the discharge current enhances nitrogen reduction and facilitates the transfer of nitrogen compounds to the liquid phase.
Article
Physics, Fluids & Plasmas
M. J. Johnson, W. A. Maza, V. M. Breslin, D. R. Boris, T. B. Petrova, S. G. Walton
Summary: This study investigates a plasma driven with high-voltage pulses for degrading PFOS in water and finds that the contact time between the plasma reactor and the solution is the main factor determining PFOS loss. The most energy efficient operating parameters for PFOS degradation come from minimizing the duration and frequency of the high-voltage pulses to reduce power consumption.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Green & Sustainable Science & Technology
Xi Li, Shiwen Wang, Xiao Zhang, Danhua Mei, Yanhua Xu, Peng Yu, Yongjun Sun
Summary: Ultrasmall TiO2 nanoparticles were encapsulated inside ZIF-8 to form a highly efficient TiO2@ZIF-8 catalyst. The catalyst showed high efficiency in toluene removal under nonthermal plasma conditions, with good stability and ozone decomposition efficiency. This work provides a new approach for synthesizing high-performance VOC catalysts.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Multidisciplinary
Yonghong Luo, Huachao Yang, Chongyan Ying, Rui Wang, Zheng Bo, Jianhua Yan, Kefa Cen, Kostya (Ken) Ostrikov
Summary: A low-temperature and environment-friendly approach using nonequilibrium plasmas with Ti3C2Tx dispersion is demonstrated to generate abundant and stable surface-terminating O groups. The discharge environment of Ar, O-2, and H-2 affects the structural characteristics and electrochemical performance of Ti3C2Tx nanosheets. Ti3C2Tx treated using H-2 plasmas exhibits the best capacitive performance with a capacity of 418.3 F g(-1) at 2 mV s(-1) and maintains 95.88% capacity after 10,000 cycles.
Article
Energy & Fuels
R. Bharathi Raja, Ramanujam Sarathi, Ravikrishnan Vinu
Summary: A novel reactor has been developed for the direct conversion of methane to hydrogen and solid carbon. The reactor design shows high conversion efficiency and selectivity. The study shows that, at the appropriate flow rate and input power, a high methane conversion rate and hydrogen selectivity can be achieved. Additionally, the reactor operates at a relatively low temperature and produces high-purity solid carbon.
Article
Mechanics
Ghazanfar Mehdi, Sara Bonuso, Maria Grazia De Giorgi
Summary: This study experimentally characterizes the induced flow dynamics by a disk-needle-type plasma actuator, analyzing different plasma actuation conditions and standoff distances. The results show that the flow dynamics can be controlled by varying the plasma power or the gap distance between electrodes. The use of POD and LDV techniques provides insights into the flow behavior and the relation between POD energy and TKE.
Article
Engineering, Chemical
Xing Fan, Ze-Yan Li, Meng-Wei Du, Jian Li
Summary: The study found that urea could be effectively hydrolyzed to NH3 and CO2 under ambient conditions when combined with ZrO2 and dielectric barrier discharge plasma, without considering the presence of O-2 in the carrier gas. Higher discharge power and the absence of O-2 in the carrier gas are favorable for increasing NH3 yield, suppressing byproduct formation, and reducing energy consumption.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Physics, Multidisciplinary
M. R. Edwards, V. R. Munirov, A. Singh, N. M. Fasano, E. Kur, N. Lemos, J. M. Mikhailova, J. S. Wurtele, P. Michel
Summary: This study demonstrates a method to create holographic plasma lenses using collinear pump lasers in a gas jet, which is crucial for manipulating high-intensity light and controlling the divergence of high-intensity pulses.
PHYSICAL REVIEW LETTERS
(2022)
Article
Plant Sciences
Jana Jiresova, Vladimir Scholtz, Jaroslav Julak, Bozena Sera
Summary: Recently, the use of low-temperature plasmas and plasma-activated water (PAW) in biological research has gained much attention. This article reviews the composition and properties of PAW prepared by different methods, and finds no significant difference between PAW prepared by plasma treatment and that prepared by mixing the active ingredients. The research also shows that PAW promotes germination and growth of wheat grains, and effectively decontaminates bacteria and yeast.
Article
Engineering, Environmental
Paula Navascues, Jose Cotrino, Agustin R. Gonzalez-Elipe, Ana Gomez-Ramirez
Summary: The study demonstrates the successful decomposition of CO2 into CO and O-2 using a nonthermal plasma reactor moderated with Lead Zirconate Titanate (PZT) as the fermelectric component, achieving high conversion rates and energy efficiencies. Optical emission spectroscopy analysis shows a direct correlation between energy efficiency and intensity of CO* emission bands, suggesting the involvement of high temperature electrons in the CO2 splitting process.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Multidisciplinary
Hamideh Hosseini
Summary: This article reviews the methods and parameters affecting the non-thermal plasma-catalysis ammonia synthesis, and discusses the mechanisms of ammonia production using this method. The study suggests that using dielectric barrier discharge plasma as a catalyst for ammonia synthesis has great potential.
Article
Engineering, Environmental
Guiyin Xu, Haibin Jiang, Myles Stapelberg, Jiawei Zhou, Mengyang Liu, Qing-Jie Li, Yunteng Cao, Rui Gao, Minggang Cai, Jinliang Qiao, Mitchell S. Galanek, Weiwei Fan, Weijiang Xue, Benedetto Marelli, Meifang Zhu, Ju Li
Summary: The study developed a carbon foam microwave plasma process to convert unsorted white wastes into gases and solid carbon, which can be buried as artificial coal. The process is self-perpetuating and does not require pre-sorting or washing, making it highly promising and feasible.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Optics
Wang Sheng, Fu Tang, Zhelin Zhang, Yanping Chen, Xiao-Yu Peng, Zheng-Ming Sheng
Summary: The study investigates Terahertz (THz) radiation generated from an inhomogeneous plasma filament by manipulating the plasma density distribution, which contributes to different frequencies of the THz spectrum. The collected THz radiation includes both coherent and partial-coherent components.
Review
Engineering, Chemical
Masaaki Okubo
Summary: Numerous studies have investigated the use of plasma for aftertreatment of exhaust gases, requiring hybrid processes to reduce power consumption; low-cost plasma processing in developing countries is gaining attention as an alternative method; reducing catalytic activity can be enhanced by plasma through increased combustion efficiency, with future work focusing on CO2 treatment in environmental plasma.
PLASMA CHEMISTRY AND PLASMA PROCESSING
(2022)
Article
Energy & Fuels
Shariful Islam Bhuiyan, Kunpeng Wang, Md Abdullah Hil Baky, Jamie Kraus, Howard Jemison, David Staack
Summary: A nanosecond pulsed non-equilibrium plasma reactor is used to crack hydrocarbons into hydrogen and lighter intermediates. The effects of various parameters on product generation are investigated, and statistical analysis is performed on hydrogen yield. Methane and argon are compared as carrier gases, with methane being more selective and sensitive to other operating parameters. Certain parameters like plasma power, capacitance, and energy per pulse appear to influence hydrogen yield, while others like pulsing frequency and breakdown voltage do not.
