FOOD HYDROCOLLOIDS
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2026
·
IF 13.8
Xinting Zhang,Chaohui Wang,Ke Liu,Yuying Zhang,Jingfeng Yang
In this study, sodium alginate (SA) was extracted from Macrocystis pyrifera using dielectric barrier discharge (DBD) plasma (DBD-SA). Its structure and rheological properties were compared with those of conventionally sodium-carbonate-extracted SA (SC-SA). DBD plasma technology offers significant advantages, most notably its SA extraction yield of 48.53%, which is 8.8% higher than that of the traditional sodium carbonate method (39.73%). It also significantly shortens extraction time and lowers energy consumption. Additionally, the absence of alkali makes it compliant with the principles of green chemistry. Fourier-transform infrared spectroscopy (FTIR) confirmed that DBD-SA retained its fundamental polysaccharide backbone and key functional groups. By analyzing nuclear magnetic resonance (NMR) spectra, DBD-SA showed a high quantity of both homo polymeric mannuronic and guluronic blocks (FMM = 0.33) and (FGG = 0.33), respectively, and the mannuronic/guluronic ratio of 0.54. However, DBD caused mild polysaccharide degradation, resulting in a lower molecular weight and solution viscosity. The molecular weight of DBD-SA is 34.98 kDa. These findings demonstrate that DBD plasma extraction is a sustainable and efficient method for producing SA, offering reduced chemical use, shorter processing times, and lower energy consumption.
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高影响因子
CHEMISTRY OF MATERIALS
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2016
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IF 9.407
Zhiyong Mao,Jingjing Chen,Guanghao Li,Dajian Wang,Zhihao Yuan,Bradley D. Fahlman
In this work, we demonstrate damage-free removal of residual carbon in a dielectric barrier discharge (DBD) plasma for carbothermal-synthesized materials, such as CaAlSiN3:Eu2+ phosphors, SnSb alloy anode materials, and TiN ceramic powders. The efficiency of residual carbon removal and the damaging effects of the plasma for treated materials are investigated in detail, with carbothermal-synthesized CaAlSiN3:Eu2+ phosphors being used as an example. Results show that the residual carbon in carbothermal-synthesized CaAlSiN3:Eu2+ phosphors could be removed effectively within a DBD plasma generator, resulting in the significant improvement of luminescent properties. The damage-free character of this DBD plasma decarburization process to phosphors is revealed, showing amazing superiority over the traditional high-temperature decarburization route. These results offer an attractive strategy for the removal of residual carbon for various carbothermal-synthesized materials with finely controlled compositions.
研究领域:
材料科学
·
等离子体物理
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无机合成
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能源材料
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荧光粉技术
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高影响因子
MICROCHEMICAL JOURNAL
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2026
·
IF 5.1
Zhiguang Yang,Zexiang Liu,Ke He,Qianqian Chen,Chenxue Yao,Qiaohuan Cheng,Huiqiang Li,Renjie Wang,Zhiwei Zhao,Xiaochen Li
Given that dopamine (DA) is an essential neurotransmitter for regulating physiological functions, the accurate detection of its concentration is critical for diagnosing neurological disorders. With their tunable pore structures and ultrahigh specific surface area, MOFs are an ideal candidate for electrochemical DA sensing. However, their inherent poor electrical conductivity and insufficient structural stability remain the major bottlenecks hindering practical application. In this study, a two-dimensional hollow leaf-structured ZIF-PDA-Fe composite was successfully constructed through a synergistic strategy of polydopamine (PDA) modification and iron (Fe) doping. Subsequently, a short (10 min) dielectric barrier discharge (DBD) plasma treatment was applied to enhance its electrochemical DA sensing performance. Characterizations revealed that the DBD-treated ZIF-PDA-Fe-10 not only retained the original crystalline and morphological structure but also exhibited a significant increase in the content of surface Fe O and Zn O functional groups. Notably, a 55.7% reduction in charge transfer resistance (Rct) was achieved, indicating a marked acceleration of electron transfer kinetics. The preserved hollow porous framework, combined with the functionally modified surface, further facilitated DA mass transport-collectively contributing to a synergistic enhancement of the electrochemical response. The resulting sensor demonstrated a wide linear detection range for DA (1–400 μM) with a low detection limit of 0.93 μM. It also showed excellent selectivity against interfering substances (ascorbic acid and uric acid) and maintained 80% signal stability over 100 continuous cycles, outperforming conventional pyrolysis-derived counterparts. This work thus provides a novel strategy for the surface engineering of MOF-based electrochemical sensors.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2022
·
IF 8.025
Zhi-Wei Liu,Ying-Xue Zhou,Yi-Cheng Tan,Jun-Hu Cheng,Alaa El-Din Bekhit,Amin Mousavi Khaneghah,Rana Muhammad Aadil
The effects of dielectric-barrier discharge (DBD) plasma treatment (20 s to 120 s treatment time with 40 kV, 12 kHz) induced mild oxidation on the gelling properties, and related structural changes of glycinin were investigated. The gelling ability of glycinin was improved by the mild oxidation induced by the plasma treatment. Treated glycinin gels exhibited a continuous and uniform network microstructure. Samples treated for 120 s had a 2.07-, 3.99- and 2.03-fold increase in hardness, chewiness, and resilience compared to the 20 s treated samples. Structural analyses showed that primary and secondary structures of glycinin were unaffected. The tertiary structure was shifted, accompanied by a decrease in free sulfhydryl (-SH) content. At the same time, carbonyl content and average particle diameter were increased by DBD treatment. The DBD treatment facilitated the generation/exchange of intermolecular disulfide bonds and enhanced gelling properties of glycinin. It is concluded that controlled plasma-induced protein oxidation can improve protein functionality.
研究领域:
食品科学
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生物化学
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DOI
PubMed
高影响因子
CHEMOSPHERE
·
2023
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IF 8.8
Jing Lou,Jiutao An,Xiangyou Wang,Xiaonan Yang,Guanglu Lu,Liang Wang,Zitong Zhao
A systematic investigation of coupling dielectric barrier discharge (DBD) plasma and different ultraviolet bands (UVA, UVB, UVC, and VUV) was constructed for antibiotic-contaminant wastewater treatment . Compared with DBD, UV, or other combined DBD/UV systems, the DBD/VUV/UVC system exhibited excellent degradation and mineralization efficiencies for oxytetracycline (OTC), achieving 93.2% removal rate (reaction rate constant 1.05 min −1 ) and higher decarbonization efficiency (mineralization rate 0.47 mg C min −1 ) within 2.5 min treatment. The radical quenching tests revealed that HO⋅, O 2 · - , and 1 O 2 were all involved in the decomposition of OTC in the DBD/VUV/UVC system, among which O 2 · - played a dominant role. Possible degradation pathways of OTC in the DBD/VUV/UVC process were proposed using density functional theory and detected intermediates. Four indexes were used to assess the toxicity of OTC and its degraded intermediates. The inorganic anions and HA slightly reduced the degradation efficiency of the DBD/VUV/UVC system. This research provides new ideas to broaden the application of plasma and alleviate the water environment crisis.
研究领域:
环境科学
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水处理
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等离子体化学
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药学
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DOI
PubMed
高影响因子
Nanomaterials
·
2019
·Vol. 9
·期 10
·1396
·
IF 4.034
Yan Mi,Jiaxi Gou,Lulu Liu,Xin Ge,Hui Wan,Quan Liu
Filling epoxy resin (EP) with boron nitride (BN) nanosheets (BNNSs) can effectively improve the thermal conductivity of BN/EP nanocomposites. However, due to the few hydroxyl groups on the surface of BNNSs, silane coupling agent (SCA) cannot effectively modify BNNSs. The agglomeration of BNNSs is severe, which significantly reduces the AC breakdown strength of the composites. Therefore, this paper uses atmospheric pressure bipolar nanosecond pulse dielectric barrier discharge (DBD) Ar+H2O low temperature plasma to hydroxylate BNNSs to improve the AC breakdown strength and thermal conductivity of the composites. X-ray photoelectron spectroscopy (XPS) shows that the hydroxyl content of the BNNSs surface increases nearly two fold after plasma modification. Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA) show that plasma modification enhances the dehydration condensation reaction of BNNSs with SCA, and the coating amount of SCA on the BNNSs surface increases by 45%. The breakdown test shows that the AC breakdown strength of the composites after plasma modification is improved under different filling contents. With the filling content of BNNSs increasing from 10% to 20%, the composites can maintain a certain insulation strength. Meanwhile, the thermal conductivity of the composites increases by 67% as the filling content increases from 10% (SCA treated) to 20% (plasma and SCA treated). Therefore, the plasma hydroxylation modification method used in this paper can provide a basis for the preparation of high thermal conductivity insulating materials.Keywords:bipolar nanosecond pulse;low temperature plasma;hydroxylation modification;BN nanosheets;nanocomposites;breakdown strength;thermal conductivity
研究领域:
材料科学
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电气工程
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PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Tongtong Xia,Zuliang Wu,Ehao Gao,Jiali Zhu,Shuiliang Yao,Jing Li
n -Undecane (C11) is a typical alkane pollutant, accounting for 6 % of the total volatile organic compounds (VOCs) emitted from the printing industry in China. A dielectric barrier discharge (DBD) reactor coupled with a catalyst of abundant oxygen vacancies prepared by Au nanoparticles 100 % loading on CeO 2 was developed for the plasma catalytic degradation of C11. Compared with CeO 2 , CeO 2 /γ-Al 2 O 3 , Au/γ-Al 2 O 3 , and Au/CeO 2 /γ-Al 2 O 3 , Au/CeO 2 exhibited significantly higher C11 oxidation performance with 98.8 % C11 conversion and 97.9 % COx selectivity. The strong interaction between nanosized Au and CeO 2 enhanced the ratios of Ce 3+ /(Ce 3+ +Ce 4+ ) and Au + /(Au + +Au 0 ), resulting in the formation of abundant oxygen vacancies with the highest band gap energy, which facilitated C11 oxidation. In addition, the reservation of reactive oxygen species generated by gas discharges on Au/CeO 2 catalyst synergistically promoted C11 complete oxidation, thus improving the oxidation stability within 600 min with stable C11 conversion and COx selectivity. This work presents an effective strategy to regulate the performance of catalysts for VOCs oxidation, and demonstrates that the plasma catalytic degradation of VOCs is feasible.
研究领域:
环境科学
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催化
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等离子体化学
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污染控制
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2019
·
IF 8.355
Jingyu Ren,Nan Jiang,Kefeng Shang,Na Lu,Jie Li,Yan Wu
In this study, trans-ferulic acid (FA) was degraded by water falling film dielectric barrier discharge (DBD) plasma coupled with CoOOH catalyst. The results reveal that CoOOH improved the degradation of FA by DBD plasma through an apparent catalytic effect. 98.2% of FA was degraded in 10 min by DBD + CoOOH (0.5 g/L dosage) system at 11.2 kV applied voltage, which was 23.8% higher than that in a sole DBD system; the corresponding energy yield ( G 50 ) was increased by 186% and the synergistic intensity for FA degradation reached up to 2.76. The evolution of reactive species reveals that the synergistic effect of DBD plasma and CoOOH catalyst can be attributed to the catalytic conversion of O 3 and H 2 O 2 into ·OH on the active sites of CoOOH surface. The results of Lewis acid sites, X-ray photoelectron spectroscopy and Raman spectroscopy suggest that the abundant oxygen vacancies and Lewis acid sites, which are offered by the lattice OH groups in CoOOH, serve as the catalytic active sites of CoOOH. According to the detected byproducts by liquid chromatograph/mass spectrometer, a possible FA degradation pathway was also tentatively proposed.
研究领域:
环境科学
·
化学工程
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高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2023
·
IF 7.8
Cao Fang,Changsheng Shao,Shenhao Wang,Yahui Wu,Chao Liu,Qing Huang
Antibiotics are abused and discharged into environmental water, posing a constant potential threat to ecosystem. It is still a challenge to treat the wastewater containing various antibiotics. While many studies have reported the plasma treatment of different antibiotics, how to treat multiple antibiotics simultaneously with high efficiency still remains an unsolved problem. In this work, we employed atmospheric-pressure dielectric barrier discharge (DBD) to treat levofloxacin and sulfadiazine as two typical antibiotics in water, and investigated the treatment efficiency and the involved mechanism. The experimental results indicated that under proper conditions, the total antibiotics removal efficiency could be enhanced compared to separate single antibiotic treatment. The contributions from the plasma-induced reactive oxygen/nitrogen species (RONS) were examined, showing that ·OH played a major role in levofloxacin degradation, while ozone and peroxynitrite also played a certain role in sulfadiazine degradation. The bio-toxicity evaluation for the plasma treatment of levofloxacin and sulfadiazine was also provided, showing that the DBD degradation products were harmless to the ecological environment. As such, this work may not only provide a practical solution to treatment of wastewater containing multiple antibiotics, but also give the insights into the mechanism for the efficient DBD treatment of mixed antibiotics in wastewater.
研究领域:
环境科学
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水处理技术
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抗生素污染控制
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Jingyi Zhao,Ai Zhang,Yinyin Zhang,Paul Héroux,Luxiang Zhu,Xiang Li,Pan Li,Yanan Liu
Soil contaminated by PCBs from the electronic processing industries has attracted global concern because of their potentially persistent risks to human and ecological health. In this study, remediation of PCBs polluted soil using dielectric barrier discharge plasma (DBD) focused on 3,3′,4,4′-tetrachlorobiphenyl (PCB77) and 2,2′-dichlorobiphenyl (PCB4). About 90 % of PCB77 and PCB4 were degraded under input power of 120 W within 30 min. The carbon dioxide mineralization of PCB77 achieved at 18.2 % in 10 min treatment. Greater PCBs degradation was obtained with higher input power, lower moisture content, weaker acidity and presence of oxygenated gas. Increasing initial concentration of PCBs had no significant effect on PCB77 degradation, but contributed to PCB4 removal. PCBs degradation reactions were initiated by high-energy electrons. Reactive oxygen species (ROS) played major roles in PCBs degradation, which was also promoted by reactive nitrogen species (RNS) such as peroxynitrous radicals (HOONO). Multiple spectroscopies showed that chlorine radicals participated in PCBs degradation reactions. Chlorine substitution, ring-opening and bridge cleavage reactions were the main degradation pathways for PCB77. The production and re-degradation of trace dioxin-like substances ensured the safety of DBD use in the remediation of PCBs-contaminated soils.
研究领域:
环境科学
·
污染治理
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高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2021
·
IF 4.759
Xi-Ling Li,Yu Han,Yuan Huang,Xiaoqi Sun,Shuyun Xiao,Jun Zhe Min
We developed a novel fluorescent chiral probe, DBD-trans-2-methyl-L-proline (DBD-M-Pro), which can be used to target recognition of amino functional groups using chiral resolution. To investigate the chiral resolution efficiency, 20 chiral amino enantiomers (19 DL-amino acids and phenylethylamine) were labeled using ultra-performance liquid chromatography (UPLC) with a fluorescence (FL) system. Diastereomers were formed by the reactions of DBD-M-Pro with enantiomers of amino functional groups at 60 °C for 60 min and detected on a BEH C18 column (100 × 2.1 mm, 1.7 μm). Gradient elution of 10 mM ammonium acetate with 0.05% formic acid (FA) aqueous solution and 0.1% FA acetonitrile or 0.1% FA methanol solution was performed at an excitation wavelength (Ex) 460 nm and emission wavelength (Em) 550 nm. Each resulting derivative of D- and L- type was effectively separated. The results showed that the resolution (Rs) of 17 amino acids and phenylethylamine (PEA) in the range of 1.59–24.11, except for histidine (His) (Rs = 1.32) and serine (Ser) (Rs = 1.47), achieved completely separation. The DBD-M-Pro chiral probe has a robust chiral selectivity for D-amino acids. Furthermore, a new method for the simultaneous determination of six DL-amino acids (Pro, Val, Trp, Phe, Leu, Lys) in human saliva was developed. The proposed method showed resolution values of 1.78–16.38, and an excellent linear relationship was obtained in the range of 2.5–500 pmol ( R 2 ≥ 0.9990). The limit of detection (S/ N = 3) ranged from 0.5 to 3.75 pmol. The intra-day and inter-day coefficient of variation (CV) were within the range of 1.75–11.73%. The average addition recoveries in saliva ranged from 95.99 to 106.97%. The methodology was used to determine the content of DL-amino acids and the D/L-amino acid ratio in the saliva of 40 healthy volunteers (15 males and 25 females), as well as evaluating the differences between men and women. Our study suggests that the DBD-M-Pro chiral probe could be an effective tool for screening potential D-amino acid biomarkers in disease.
研究领域:
分析化学
·
生物化学
·
医学诊断
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2026
·
IF 10.4
Huanhuan Liu,Yi Zhao,Boyu Cheng,Fengyi Guo,Xiuqing Yao,Jie Gao,Dima Atehli,Tianyu Qi,Ji Kang,Steve W. Cui,Yuanlin Sun,Qingbin Guo
DBD plasma enables catechin grafting on CAX without disrupting its skeleton. • ECG shows the highest grafting yield among four catechin monomers. • ECG moieties mainly anchor to the inner xylan backbone of CAX. • Catechin grafting partly restores plasma-condensed CAX chain expansion. • Catechin grafting shifts CAX sheets into porous fibrous networks. A green, non-thermal dielectric barrier discharge (DBD) plasma protocol was established to covalently graft four structurally distinct catechin monomers, epicatechin, epicatechin gallate (ECG), epigallocatechin, and epigallocatechin gallate, onto corn bran arabinoxylan (CAX). Among the synthesized conjugates, ECG-CAX showed the highest grafting yield (72.66 mg/g). Fourier transform infrared spectrum (FT-IR) and ultraviolet-visible (UV–vis) spectroscopy analyses verified phenolic incorporation while preserving the primary polysaccharide skeleton. Two-dimensional nuclear magnetic resonance (2D-NMR), supported by gradient acid hydrolysis, indicated a free-radical-mediated, heterogeneous multi-site conjugation network, with the B- and D-rings of ECG predominantly anchored to the inner xylan backbone. Plasma treatment contracted native CAX from flexible random coils into compact coil conformations, whereas phenolic grafting partially reversed this transition by introducing steric hindrance and promoting chain re-expansion into semiflexible coils. This conformational evolution reduced apparent viscosity and shifted the micromorphology from lamellar sheets to interconnected porous fibrous networks, providing mechanistic insight into plasma-mediated polysaccharide–polyphenol conjugation. Download: Download high-res image (189KB) Download: Download full-size image
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