Article
Materials Science, Multidisciplinary
Qiuhong Lin, Haiyang Peng, Wuming Xie, Lijuan Duan, Cairu Shao, Dongxing Wang, Shuai Rao, Hongyang Cao
Summary: The study investigated the use of DBD plasma technology combined with Ag/TiO2 composites for phenol degradation, showing successful doping of Ag on TiO2 and a decrease in electron-hole pair recombination rate. The addition of Ag/TiO2 enhanced phenol removal efficiency under certain conditions, but had a slight inhibiting effect at higher voltages.
Article
Biochemistry & Molecular Biology
Yu Ren, Ziyao Zhao, Tingyue Fan, Rui Luan, Lirong Yao, Hong Shen, Xingqi Hu, Li Cui, Mei-Xian Li
Summary: Chitosan/TiO2 functionalized polypropylene nonwoven fabrics were prepared through crosslinking of chitosan with glutaraldehyde followed by loading of TiO2 nanoparticles. The functionalized material showed super hydrophilicity and excellent visible light induced photocatalytic antibacterial properties due to the synergistic effects of chitosan and TiO2. SEM images demonstrated the even distribution of TiO2 nanoparticles on the surface of the material. Photocatalytic degradation experiments showed higher photocatalytic properties compared to pure polypropylene under visible light, with a methylene blue degradation rate of 96.4% after 90 minutes of light exposure. The antibacterial properties against E. coli and S. aureus were significantly increased, with bacterial reduction percentages of 98.7% and 96.3%, respectively. The functionalized composite material exhibited promising potential in environmentally friendly antibacterial applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Physical
Bo Yu, Lianhong Zhang, Hongbo Wu, Jie Wen, Arshid Mahmood Ali, Hui Zhang, Guoping Zhang, Mingwei Yu
Summary: The F modification of titanium dioxide was achieved for the first time through a plasma method, resulting in efficient degradation of dyes under visible light.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Environmental Sciences
Li-qiang Qi, Zhe Yu, Qi-hao Chen, Jing-xin Li, Hao-bo Xue, Feng Liu
Summary: This paper proposed a hybrid system that combined dielectric barrier discharge plasma with catalysis for toluene degradation. Photocatalysts TiO2 doped with Mn and Fe were used to improve the performance of the system. The effects of doping ratio, electric field intensity, AC frequency, gas flow rate, and initial concentration on toluene degradation efficiency, ozone decomposition capacity, and COx selectivity were investigated. The best doping ratios were found to be 1.0% for both Mn and Fe, and increasing electric field intensity significantly improved the synergism of the system.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Ceramics
Pengfei Liang, Jie Zhu, Di Wu, Hui Peng, Xiaolian Chao, Zupei Yang
Summary: In this study, Ag+/Nb5+ co-doped TiO2 ceramics with colossal permittivity over a wide frequency and temperature range were successfully prepared, showing low dielectric loss, high dielectric permittivity, and good thermal stability. The giant dielectric permittivity in these ceramics was mainly attributed to electron-pinned defect-dipoles and internal barrier layer capacitance.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Engineering, Electrical & Electronic
Kaiyue Wu, Jingnan Liu, Jiacun Wu, Mo Chen, Junxia Ran, Xuexia Pang, Pengying Jia, Xuechen Li, Chenhua Ren
Summary: This article reports a double-mode argon planar plume, which operates in the streamer mode and transits to the filamentary mode. Discharge characteristics and plasma parameters are compared for the two modes, showing that the streamer mode and the filamentary mode correspond to pulsed and humped discharges respectively. Fast photography reveals that the streamer-mode plume is composed of stochastically branching streamers, while the filamentary-mode plume results from a series of moving filaments similar to those in barrier discharge. The filamentary mode has lower excited electron temperature and vibrational temperature, whereas higher electron density and gas temperature, and it achieves better hydrophilicity of polyethylene terephthalate surface.
Article
Physics, Applied
Guanglin Yu, Bangfa Peng, Nan Jiang, Ronggang Wang, Haoyang Sun, Zhengyan Liu, Kefeng Shang, Na Lu, Jie Li
Summary: The plasma characteristics in a DBD device with a rotating dielectric barrier were investigated in this study. The results showed that rotating the barrier improved discharge power and the number of current pulses. The rotation reduced the grayscale standard deviation of the discharge images and resulted in a diffusion distribution of microdischarges. The mechanism of enhancing discharge energy and uniformity was analyzed based on surface charges and electron detachment from space negative charges.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2023)
Article
Physics, Fluids & Plasmas
Romain Magnan, Gerjan Hagelaar, Mohamed Chaker, Francoise Massines
Summary: This study investigates the transition mechanism of a dual frequency dielectric barrier discharge (DBD) from alpha to alpha-gamma mode at atmospheric pressure, and finds that the increase in emissions of argon and NH, as well as the particle density, characterize this transition. Additionally, it is observed in experiments that increasing the NH3 concentration leads to a decrease in the LF voltage amplitude required to reach the alpha-gamma mode.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Chemical
Hao Ma, Chenchen Yuan, Xiaomin Wang, Hongjun Wang, Yupei Long, Yuqi Chen, Qi Wang, Yanqing Cong, Yi Zhang
Summary: In this study, CeO2 was deposited on TiO2-NRs through DBD plasma treatment, forming a CeO2/TiO2-NR electrode. The composite electrode showed excellent PEC performance under specific conditions, and could effectively remove phenol from simulated seawater.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Environmental Sciences
Jixing Liu, Yanyan Ji, Shuping Zhu, Teng Guo, Li Xu, Junguo Dong, Ping Cheng
Summary: The study focused on the efficiency and selectivity of degrading toluene using non-thermal plasma combined with catalysts. Results demonstrated that the plasma-catalyst hybrid system significantly improved energy efficiency and reaction selectivity, achieving a maximum toluene degradation efficiency of 99.6% and CO2 selectivity of 83.0%. The appropriate amount of C-dot doping greatly enhanced catalyst efficiency in the hybrid plasma system.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Ryuta Ichiki, Tomoki Komatsu, Kaito Yakushiji, Kosuke Tachibana, Takashi Furuki, Seiji Kanazawa, Shinji Yoshimura
Summary: The ignition area of a planar dielectric barrier discharge extends beyond the opposite electrode when the ambient temperature increases, even with a small opposite electrode. The creeping discharge around the opposite electrode is not the cause of this extension phenomenon.
RESULTS IN PHYSICS
(2021)
Article
Physics, Fluids & Plasmas
Haitao Wang, Weidong Zhang, Wei Zhang, Zhongyu Hou
Summary: This paper focuses on enhancing the dielectric-barrier-discharge plasma actuation performance using chemically reliable TiO2 nanoparticles processed through the doctor blade method. The study finds that the thrust enhancement rate can reach approximately 72% compared to the controlled samples. It also discovers a threshold phenomenon where lower applied voltage and frequency lead to a decrease in thrust generation. The results suggest that the increase in ionization frequency caused by the field enhancement effect of the nanostructures is the main mechanism for the extra thrust generation.
PHYSICS OF PLASMAS
(2022)
Article
Engineering, Environmental
Wenjiao Sang, Cheng Zhan, Shiwen Hao, Longjie Mei, Jiaqi Cui, Qian Zhang, Xi Jin, Cuihua Li
Summary: In this study, RGO-TiO2 composites were used in combination with dielectric barrier discharge plasma for phenol degradation. The presence of Cl- and SO42- inhibited the degradation of phenol, while NO3- had a lesser effect. The addition of CO32- significantly accelerated the degradation process, possibly facilitated by the generation of O3 and H2O2.
JOURNAL OF WATER PROCESS ENGINEERING
(2021)
Article
Engineering, Environmental
Baowei Wang, Xiaoyan Li, Xiaoxi Wang, Bo Zhang
Summary: The study indicates that using filled dielectric materials can significantly improve the conversion rate and energy efficiency of CO2 decomposition technology, with the filled MgO reactor showing the highest performance.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Liying Jiang, Pengju Wang, Yufen Zhang, Zhiwei Yao
Summary: This study successfully improved the oxidation removal efficiency of CVOCs using a DBD reactor with segmented electrodes and Co-Mn/TiO2 catalyst. The introduction of segmented electrodes and the catalyst enhanced the plasma characteristics and increased the generation of active species, favoring the oxidation of chlorobenzene.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Yanzhao Zhang, Xiya Wang, Peimei Dong, Zhengfeng Huang, Xiaoxiao Nie, Xiwen Zhang
Article
Chemistry, Multidisciplinary
Yanzhao Zhang, Xiya Wang, Peimei Dong, Zhengfeng Huang, Xiaoxiao Nie, Xiwen Zhang
Article
Chemistry, Multidisciplinary
Zihao Wo, Hua Ma, Chaofan Shi, Yier Su, Xiwen Zhang
Summary: In this study, Ag-TiO2-rGO nanocomposites were fabricated using a one-pot hydrothermal method. The resulting nanocomposites were characterized and evaluated for their photocatalytic performance. The nanocomposites exhibited a porous structure with chemical bonds formed between TiO2 and rGO. By optimizing the loading content, the adsorption and photodegradation performances were improved. Possible photocatalytic mechanisms were proposed.
Article
Chemistry, Physical
Haowen Sun, Zihao Wo, Yier Su, Hua Ma, Xiwen Zhang
Summary: This study presents a facile approach to prepare sponges from PEDOT:PSS and konjac glucomannan (KGM) that exhibit excellent electromagnetic interference (EMI) shielding performance in both GHz and THz bands. By controlling the structure and properties of the material, the sponge achieves efficient electromagnetic wave shielding across a wide frequency range.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Zihao Wo, Yier Su, Hua Ma, Chaofan Shi, Haowen Sun, Xiwen Zhang
Summary: Flexible Janus membranes based on cellulose substrate were fabricated for effective fog collection. The formation mechanisms of the membranes, including asymmetric growth of titania and single-side hydrophobic modification, were studied in detail. The perforated membranes showed the highest fog collection efficiency and desirable anti-acid, anti-pollution, and reusability properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)