INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Ketao Shi,Youbing Zhu,Zhen Xu,Nianming Jiao,Hui Wang
The metal coordination state and the corresponding acid property of zeolite closely relate to its catalytic performance. In this study, DBD-plasma (dielectric barrier discharge-plasma), a low-temperature and energy-efficient external activation method, was proposed to activate the NH4+-type ZSM-5 zeolite and to regulate the Al coordination. It was found that DBD treatment could efficiently decompose NH4+ species at 115 °C, far below that required for calcination (550 °C). Characterizations, including X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), 27Al magic angle spinning nuclear magnetic resonance (27Al MAS NMR), and pyridine-adsorption infrared spectroscopy (Py-IR), revealed that DBD-plasma treatment could inhibit zeolite framework destruction and retain more framework Al and mesoporous structure, thus improving the stability and enhancing the amount of medium-strong Brønsted acid sites. In n-hexane cracking, DBD-activated zeolite exhibited improved conversion and C2–C4 olefin selectivity due to the enhanced monomolecular cracking pathway induced by increased Brønsted acidity, while reducing aromatics and coke formation by suppressing side reactions. This paper presents an alternative method that is more energy-efficient, highly effective, and capable of regulating the metal coordination and acidity of ZSM-5 zeolite.
研究领域:
催化
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材料科学
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化学工程
·
物理化学
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产品关联
DOI
高影响因子
Plasma Processes and Polymers
·
2024
·
IF 2.9
Yichi Ma,Xiaolong Gao,Aoran Li,Ben Zhang,Bing Xiao,Weiran Wang,Jing Mei,Jianli Jia
The efficiency and influencing factors during PAH-polluted soil remediation by dielectric barrier discharge (DBD) low-temperature plasma technology are investigated in this study. Gas chromatography, microbial community structure analysis, and response surface analysis were used to optimize suitable remediation processing factors. The degradation rates of phenanthrene and benzo[a]pyrene reached 94.37% and 86.53%, respectively, at an initial concentration of 100.00 mg/kg, whereas optimal parameters for the system were identified as 130 V for voltage, 160 Hz for frequency, 0.60 L/min for gas flow rate, and 40 min for discharge time. Comprehensively, DBD plasma is an efficient, low-energy, and sustainable remediation technology according to the energy consumption calculation and comparison with the relevant literature.
研究领域:
环境科学
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土壤学
·
等离子体技术
·
微生物学
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产品关联
DOI
高影响因子
Analytical Methods
·
2023
·Vol. 15
·期 7
·884-895
·
IF 3.1
Xin Wang,Xiaoqi Sun,Yueying Jin,Shengyu Cheng,Yu Han,Minghui Zhang,Lingli Zhang,Xi-Ling Li,Chun-Yan Xu,Jun Zhe Min
This study reports a novel fluorescent chiral derivatization reagent, 4-(N,N-dmethylaminosulfonyl)-2,1,3-benzoxadiazole-(2-succinimidoxy)-trans-2-methyl-L-proline (DBD-S-M-Pro), with a benzoxadiazole structure containing an N-hydroxysuccinimide activation group. DBD-S-M-Pro targets chiral amino-functional compounds under alkaline conditions without a condensation agent. Gradient elution was performed on a BEH C18 (100 × 2.1 mm, 1.7 μm) column with a mobile phase of 0.05% formic acid (FA) in 10 mM ammonium acetate (CH3COONH4) and 0.1% FA in acetonitrile or methanol. The efficiency of the chiral resolution was evaluated under excitation and emission wavelengths of 450 nm and 560 nm, respectively. The 19 chiral amino acids were separated in the range of 1.45–14.84. The resolutions of almost all DL-amino acids exceeded 1.5; the exceptions were serine (Ser) and lysine (Lys), with resolutions of 1.45 and 1.46, respectively. In addition, a new approach was devised for the simultaneous analysis of four chiral amino acids (DL-Glu, DL-Ala, DL-Val, and DL-Phe) in human hair. These amino acids were analyzed in the range of 12.5–400 pmol, with R2 ≥ 0.9990, limits of detection (S/N = 3) of 4–10 pmol, and intraday and interday precisions of 0.57–6.23%. The average spikes in the hair recoveries were 89.76–111.54%, and the matrix effects were 92.47–102.40%. Next, the contents of free chiral amino acids in the hair samples of 10 healthy volunteers (five males and five females) were analyzed with this method, and the differences were compared. The developed DBD-S-M-Pro provides a novel strategy for the sensitive determination of free chiral amino acids in living organisms.
研究领域:
分析化学
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生物化学
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药学
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产品关联
DOI
PubMed
高影响因子
WATER RESEARCH
·
2024
·
IF 11.4
Danjing Lu,Xin Mao,Ruoxi Wu,Bin Liu
This study investigated a sustainable approach through dielectric barrier discharge (DBD) enhanced Fenton technology coupling nanofiltration (NF) process for landfill leachate treatment. The DBD/Fe(II)/H 2 O 2 system exhibited significant synergistic effects, removing 55.07 % of TOC and 53.79 % of UV 254 within 60 min, respectively. Additionally, the DBD/Fe(II)/H 2 O 2 system demonstrated exceptional performance in removing fluorescent substances and large molecular organic compounds, thereby reducing the formation of cake layer on the nanofiltration membrane. Moreover, membrane flux increased by 2.34 times, with reversible and irreversible resistances decreasing by 75.79 % and 81.55 %, respectively. Quenching experiments revealed ·OH as the primary active species for perfluorooctanoic acid (PFOA) degradation in the DBD/Fe(II)/H 2 O 2 process. The degradation pathway of PFOA was also elucidated via capillary electrophoresis-quadrupole time-of-flight mass spectrometry analysis. Correlation analysis indicated that TOC and EEM were the primary fouling factors. Lastly, through an assessment of energy consumption, economic costs, and carbon dioxide emissions, the advantages and practical application potential of the DBD/Fe(II)/H 2 O 2 system were demonstrated. In summary, the DBD/Fe(II)/H 2 O 2 system emerges as a feasible strategy for NF pretreatment, holding immense potential for treating landfill leachate.
研究领域:
环境工程
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水处理
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膜技术
·
高级氧化过程
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产品关联
DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2023
·
IF 7.8
Yongyang Chen,Xiaomin Sun,Lijiao Zheng,Yuan Liu,Yimo Zhao,Shimeng Huang,Shanping Li
A highly catalytic activity dielectric barrier discharge (DBD) plasma-catalyst synergistic system was constructed by DBD plasma and Ce 0.5 Bi 0.5 VO 4 /honeycomb ceramic plate (Ce 0.5 Bi 0.5 VO 4 /HCP) catalytic coating. Various characterization techniques were employed to analyze the physicochemical properties of the prepared photocatalysts. The catalytic activity of different catalytic systems was evaluated using amoxicillin (AMX) as the target contaminant. The DBD plasma-catalyst synergistic system exhibited significantly enhanced catalytic capacity compared to the single DBD plasma system. H 2 O 2 and O 3 concentrations in the solution during the reaction were monitored, and their formation process and roles were analyzed. The TOC results indicated that AMX exhibits a good mineralization rate in the synergistic system, and the 3D EEMs further revealed the changes in organic pollutant types during the mineralization process. The possible degradation pathways of AMX were inferred through mass spectra results and theoretical calculations. Additionally, the LC 50 results for fathead minnow and daphnia show a significant downward trend of the main degradation intermediates. A possible synergistic mechanism was discussed based on the characterization results, experimental data, and relevant literature. This study offers a straightforward technical approach and theoretical backing for the synergistic wastewater treatment using DBD plasma combined with photocatalysts.
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DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Yi Chen,Weilin Shi,Claudia Li,Kang Hui Lim,Xueqian Wang,Langlang Wang,Ping Ning,Yixing Ma,Sibudjing Kawi
Global warming, driven by rising levels of CO2 in the atmosphere, is an environmental predicament confronted by humanity. Plasma catalytic decomposition of carbon dioxide into carbon monoxide is a practical approach to mitigate this challenge, which can be a crucial step in carbon recycling. Metal selenides are promising candidates owing to their abundant reserves and outstanding electron transfer properties, making them highly active in chemical reactions. In this study, the morphology of AlO(OH) and the dispersion of Cu2−xSe were optimized by hydrothermal synthesis temperature. Specifically, the Cu2−xSe-Al-180 catalyst, prepared at a hydrothermal temperature of 180 °C, formed AlO(OH) with good crystallinity and a nanoscale thin-sheet structure, with Cu2−xSe uniformly distributed on the AlO(OH) support. The reaction of CO2 decomposition to CO production by integrating Cu2−xSe-Al-180 with dielectric barrier discharge (DBD) plasma led to a CO2 conversion of up to 28.07% at a specific input energy (SIE) of 58.07 kJ L−1. The excellent CO2 adsorption properties of AlO(OH) and Cu2Se reduce the activation energy barrier of the reaction, and Cu2Se further promotes the excited activation of CO2 in the plasma. These findings offer valuable insights for the development and design of catalysts in the field of plasma catalysis and highlight the potential of CuSe-based materials in CO2 reduction technologies.
研究领域:
环境科学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2018
·
IF 4.946
Qisen Xiang,Xiufang Liu,Junguang Li,Shengnan Liu,Hua Zhang,Yanhong Bai
This work aimed to evaluate the effects of dielectric barrier discharge (DBD) plasma on inactivation of spoilage yeast Zygosaccharomyces rouxii ( Z. rouxii ), in apple juice. Results showed that DBD plasma treatment at 90 W for 140 s resulted in about 5-log reduction of Z. rouxii in apple juice. The levels of extracellular nucleic acids and proteins as well as contents of H 2 O 2 and NO 2 − in yeast extract-peptone-dextrose (YPD) medium increased significantly after DBD plasma treatment at 90 W for 40–200 s. The increases in membrane permeability and generation of reactive species would likely contribute to DBD plasma-mediated inactivation of Z. rouxii . DBD plasma caused significant changes in pH, titratable acidity, and certain color parameters of apple juice, but had no effect on the contents of total soluble solids, reducing sugar, and total phenolics. This study provides key implications for the application of DBD plasma in fruit juice processing.
研究领域:
食品科学
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微生物学
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产品关联
DOI
PubMed
高影响因子
Food Analytical Methods
·
2021
·Vol. 14
·期 6
·1099-1109
·
IF 3.366
Jin Yueying,Xu Chun-Yan,Wang Jing,Man Xiaoxi,Shi Qing,Nie Fenghuan,Nan Jun,Min Jun Zhe
A new simple and sensitive method for the simultaneous detection of free DL-amino acids (DL-AA) in natto was established by UPLC-fluorescence (FL) using the newly developed fluorescence derivatization reagent DBD-trans-2-methyl-L-proline (DBD-M-Pro) by precolumn derivatization. DBD-M-Pro reacts with DL-amino acids at 60 °C for 60 min. Using BEH C18 (2.1 mm × 100 mm, 1.7 μm) column gradient analysis for 20 min, the resolution of diastereomers after the derivatization of four DL-amino acids was 1.65–3.50. The detection limit for amino acids was 0.25–2.5 pmol. The average recovery (%) of DL-amino acids was 86.65–118.70%. The method was applied to the detection of chiral amino acids in natto beans and mucus, and four chiral amino acids, DL-Gln, DL-Asp, DL-Glu, and DL-Ala, were simultaneously detected. At the same time, the DL-amino acid content and D/L ratio of three different manufacturers of natto were compared quantitatively.
研究领域:
生物化学
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食品科学
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产品关联
DOI
高影响因子
LUMINESCENCE
·
2022
·Vol. 37
·期 12
·2050-2058
·
IF 2.613
Xin Hou,Xiaohui Wen,Juan He,Xiandeng Hou
Lanthanide metal–organic frameworks Eu(BTB) MOFs was synthesized in low-temperature plasma produced by dielectric barrier discharge (DBD). This DBD synthesis possesses the characteristics of rapid reaction (within 20 min), mild condition (low temperature and atmospheric pressure) and simple operation compared with many traditional synthesis methods. The prepared Eu(BTB) MOF material exhibits typical red light emitting of europium (Eu 3+ ) at 617 nm, which can selectively and sensitively be quenched in the presence of trace iron(III) ion (Fe 3+ ). A simple, fast and sensitive fluorescence sensing strategy of Fe 3+ was thus constructed, with a limit of detection (LOD) of 0.5 μM. Compared with reported fluorescence probes, Eu(BTB) MOFs have also demonstrated the advantages of low cost, easy and fast preparation, great stability, and excellent optical properties, thus making them a promising fluorescence candidate for trace Fe 3+ sensing for the potential application in biological systems in the future.
研究领域:
材料科学
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分析化学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Xueqian Wu,Jin Zhao,Jiangyan Tao,Jiawen Chi,Xin Min,Songjian Zhao
As a major greenhouse gas, the rational conversion and utilization of CO 2 can help reduce carbon emissions and mitigate the greenhouse effect. In this study, mesoporous SiO 2 as a carrier, with CuO and NiO employed to construct a binary metal composite silica-based catalyst, coupled with dielectric barrier discharge (DBD) plasma, for the conversion of CO 2 . Physicochemical analysis confirmed the successful introduction of CuO into the mesoporous SiO 2 . NiO and CuO bimetals were dispersed on SiO 2 surfaces with large specific surface areas, ensuring an optimal distribution of metal oxide. Gas chromatography was utilized to investigate the performance of DBD-coupled x%CuO-3 %NiO/Si for CO 2 conversion. The results indicated that the CuO-NiO binary composite silica catalysts significantly improved CO 2 conversion, CO yield, and energy efficiency compared to the monometallic 3 %NiO/Si materials. Further microstructural analysis of the 9 %CuO-3 %NiO/Si catalyst revealed near-elliptic particles with dimensions of 200 by 500 nm and a large number of irregular fine particles attached to the surface. When the CuO loading reached an optimal level and the input power was set at 30 W, the energy efficiency of the 9 %CuO-3 %NiO/Si catalyst increased by 119.6 %. The CuO-NiO binary composite Si-based catalyst developed in this study boasts simple operation and environmental friendliness, making it highly significant for CO 2 treatment.
研究领域:
环境科学
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材料科学
·
能源化学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Zhongqing Yu,Yabing Sun,Guyu Zhang,Chunxiao Zhang
This study investigated the degradation feasibility of N, N-diethyl-m-toluamide (DEET) in aqueous solution by water falling film dielectric barrier discharge (DBD) plasma under three different operating modes. The results exhibited that bubbling the gas of discharge area into DEET solution at the same time of DEET solution flowing through the discharge area (model-3) achieved better effect, the degradation efficiency and rate constant of 300 mL DEET solution with initial concentration of 20 mg/L could reach 76.8% and 0.0526 min −1 , respectively, after 27 min. In addition, the energy yield of model-3 was highest. The reactive species (H 2 O 2 , O 3 ) generated from the DBD system were measured, and the effects of different radical scavengers were analysed. Meanwhile, the removal efficiency of total organic carbon (TOC) in model-3 was much higher, could reach about 24%. The effects of various parameters such as discharge voltage, initial pH, gas bubbling flowrate and liquid circulation flowrate on the degradation of DEET in model-3 were further examined and it was also observed that higher discharge voltage, lower pH, larger gas bubbling flowrate and larger liquid circulation flowrate could promote the removal of DEET. Finally, the DEET degradation pathway was deduced based on HPLC-MS analysis and Gaussian calculation.
研究领域:
环境科学
·
化学工程
·
等离子体技术
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产品关联
DOI
高影响因子
Foods
·
2022
·Vol. 11
·期 10
·1494
·
IF 5.561
Zhe Zheng,Yousheng Huang,Liping Liu,Yi Chen,Yuanxing Wang,Chang Li
In this study, dielectric barrier discharge (DBD) cold plasma was used to degrade zearalenone and the efficiency of degradation were evaluated. In addition, the degradation kinetics and possible pathway of degradation were investigated. The results showed that zearalenone degradation percentage increased with increasing voltage and time. When it was treated at 50 KV for 120 s, the degradation percentage could reach 98.28%. Kinetics analysis showed that the degradation process followed a first-order reaction, which fitted the exponential function model best (R² = 0.987). Meanwhile, liquid chromatographywith quadrupole time-of-flight mass spectrometry (Q-TOF LC/MS) was used to analyze the degradation products, one major compound was identified. In this study, the reactive species generated in cold plasma was analyzed by Optical Emission Spectroscopy (OES) and the free radicals were detected by Electron Spin Resonance (ESR). This study could provide a theoretical basis for the degradation of zearalenone to a certain extent.Keywords:DBD cold plasma;zearalenone;degradation kinetics;degradation products
研究领域:
食品科学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）