Journal of Water Process Engineering
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2025
·
IF 6.7
Xiaoyang Wei,Jingyun Zang,Pengju Chen,Zhenhai Wang,Sen Wang,Yajun Zhao,Zhi Fang
Plasma synergized Fenton-like catalysts are regarded as a highly promising method for antibiotic degradation. However, further enhancement is required in terms of the energy utilization efficiency of the plasma and the performance of the Fenton-like catalyst. In this study, a synergistic system of pulsed gas-liquid discharge (PGLD), heterogeneous Fenton-like catalyst CuFe 2 O 4 (CFO), and persulfate (PS) is constructed for the efficient degradation of tetracycline. The degradation rate in the PGLD/CFO/PS system reached 96.9 % with a synergistic factor of 2.85 when 80 mg of CFO and 3 mM of PS were added. The initial solution pH, the dosage of CFO and PS, and the working gas can also exert a considerable influence on degradation. The higher concentrations of H 2 O 2 and O 3 may account for the higher degradation rates observed in the PGLD/CFO/PS system. ESR experiments demonstrated that the PGLD/CFO/PS system was more conducive to OH and SO 4 − formation, which are the key active species for degradation. Three potential degradation pathways were postulated according to the degradation intermediates. The PGLD/CFO/PS system has been demonstrated to significantly reduce the toxicity of the antibiotic solution following treatment. This research provides a prospective approach for the sustainable implementation of wastewater treatment.
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JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Tian Yuan,Yong Wang,Yiming Zhou,Aijia Zhang,Jie Meng,Ling Li,Wenming Zhang
Highly sensitive sensors with extensive applications are extremely desired in the next-generation wearable electronics for human motion monitoring, human-machine interface and intelligent robotics, while single-functional pressure sensors cannot fulfill the growing demands of modern technological advances. Herein, an all-fabric and multilayered piezoresistive sensor based on conductive metal-organic framework/layered double hydroxide (cMOF/LDH) hetero-nanoforest is demonstrated to achieve multiple applications including pulse detection, joint motion detection, sound detection and information transmission. Benefiting from the synergism of cMOF/LDH hetero-nanoforest and multilayered structure, the sensor exhibits a high sensitivity (1.61×10 9 kPa −1 ) over a broad pressure range (0-100 kPa), a fast response/recovery time (71 ms/71 ms) and a low detection limit (18 Pa), as well as reliable dynamic stability (8000 cycles). It is gratifying to note that the introduction of cMOFs endows the sensor with the potential to detect the concentration of NH 3 (1-100 ppm) and sunlight intensity (10-100 mW cm −2 ). This work shows great potential in multifunctional sensing, which enlightens a strategy for advancing the development process of highly sensitive intelligent wearable devices.
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Plants-Basel
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2025
·Vol. 14
·期 5
·708
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IF 4.1
Zhongxiao Yue,Ruidong Zhang,Naihong Feng,Xiangyang Yuan
The flavour of foxtail millet (Setaria italica(L.) P. Beauv.) is an important indicator for evaluating the quality of the millet. The volatile components in steamed millet porridge samples were analysed using electronic nose (E-Nose) and gas chromatography–ion mobility spectrometry (GC-IMS) techniques, and characteristic volatile fingerprints were constructed to clarify the differences in the main flavour substances in different foxtail millet varieties (two hybrids and two conventional foxtail millets). After sensory evaluation by judges, Jingu 21 (JG) scored significantly higher than the other varieties, and the others were, in order, Jinmiao K1 (JM), Changzagu 466 (CZ) and Zhangzagu 3 (ZZ). E-Nose analysis showed differences in sulphides and terpenoids, nitrogen oxides, organosulphides and aromatic compounds in different varieties of millet porridge. A total of 59 volatile components were determined by GC-IMS in the four varieties of millet porridge, including 23 aldehydes, 17 alcohols, 9 ketones, 4 esters, 2 acids, 3 furans and 1 pyrazine. Comparative analyses of the volatile components in JG, JM, ZZ and CZ revealed that the contents of octanal, nonanal and 3-methyl-2-butenal were higher in JG; the contents of trans-2-butenal, 2-methyl-1-propanol, trans-2-heptenal and trans-2-pentenal were higher in JM; and the contents of 2-octanone, hexanol, 1-octen-3-ol, 2-pentanone and butyraldehyde were higher in ZZ. The contents of 2-butanol, propionic acid and acetic acid were higher in CZ. A prediction model with good stability was established by orthogonal partial least squares discriminant analysis (OPLS-DA), and 25 potential characteristic markers (VIP > 1) were screened out from 59 volatile organic compounds (VOCs). These volatile components can be used to distinguish the different varieties of millet porridge samples. Moreover, we found conventional foxtail millet contained more aldehydes than the hybridised foxtail millet; especially decanal, 1-nonanal-D, heptanal-D, 1-octanal-M, 1-octanal-D and 1-nonanal-M were significantly higher in JG than in the other varieties. These results indicate that the E-Nose combined with GC-IMS can be used to characterise the flavour volatiles of different foxtail millet, and the results of this study may provide some information for future understanding of the aroma characteristics of foxtail millet and the genetic improvement of hybrid grains.
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JOURNAL OF RARE EARTHS
·
2025
·
IF 7.2
Yinzhong Liu,Xuechun Yang,Yun Guo,Lingchao Wang,Xiaoshun Wei,Qingjie Wang,Yiyu Qiao,Xiaotao Zhu,Lingli Cheng,Zheng Jiao
n -Butanol, a volatile organic compound with relatively low toxicity, requires precise detection for public health and environmental safety. In this research, metal-organic framework (MOF)-ZnO nanostructures (zinc oxide nano-materials with the utilization of metal-organic frameworks as precursors) doped with rare earth elements (Ce, Eu, and Er) were synthesized via a homogeneous co-precipitation route. The produced samples were comprehensively characterized employing X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) method, X-ray photoelectron spectroscopy (XPS), and UV-vis spectroscopy to evaluate the morphological, structural, and optical characteristics. The gas-sensing capabilities of the RE (Ce, Eu, Er)-ZnO series of sensors were subsequently assessed in comparison to those of pristine MOF-ZnO by adjusting the doping type and ratio of rare earth elements to optimize the sensor performance. Among the materials tested, the 0.08 wt% Eu-ZnO sensor exhibits the best-of-breed sensitivity and selectivity, achieving the impressive response value of 616.11 and the detection limit of 361.52 ppb working at 230 °C under 100 ppm of n- butanol exposure, this achievement attains 8.7 times greater than that of pristine MOF-ZnO (70.72). Moreover, with the aid of ultraviolet excitation, the performance of the 0.08 wt% Eu-ZnO sensor is further enhanced, with the sensitivity response elevating to 1000.65 and 4.3 times greater than that of pristine MOF-ZnO (231), leading to the lower detection limit of 259.70 ppb at 220 °C. These findings underscore the significant potential of rare earth incorporation and UV irradiation playing as the synergistic strategy to augment the gas-sensing capabilities, preeminently in the detection of low-concentration volatile organic compounds.
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BIORESOURCE TECHNOLOGY
·
2025
·
IF 9
Guangqian Kuang,Xingming Jin,Hong Jin,Xiangyong Zheng,Ye Tang,Borui Zhu,Kairong Zheng,Min Zhao,Wenjuan Han
Antibiotic contamination in wastewater presents substantial ecological risks. However, the effects of antibiotics on nitrogen (N) removal and greenhouse gas (GHG) emissions in benthic fauna-enhanced constructed wetlands (CWs) remain poorly understood. In this study, 30 CW microcosms were established with three levels of benthic fauna richness (no fauna, three single-species, and one three-species), under conditions with or without sulfonamide antibiotics. Results showed that antibiotics significantly increased effluent N concentrations in single-species benthic fauna systems by plant and benthic fauna antioxidant capacity (superoxide dismutase, peroxidase, and catalase), plant biomass and N pool, the activities of N -transforming enzymes (e.g., hydroxylamine oxidoreductase, nitrous oxide reductase), and microbial community composition. In contrast, antibiotics reduced effluent nitrate N concentration by 42 % in fauna-free systems. Antibiotics and benthic fauna diversity also significantly influenced GHG emissions. Without antibiotics, the three-species systems exhibited the lowest total global warming potential (GWP CH4+N2O+CO2 ) per unit N removal, with a 265 % reduction relative to the control. With antibiotics, the Chironomus riparius systems showed the lowest GWP CH4+N2O+CO2 per unit N removal, reducing this indicator by 637 % compared to the control. Furthermore, antibiotics further enhanced this effect in C. riparius systems, resulting in a 372 % reduction. Results indicated that, without antibiotics, enhancing benthic fauna diversity can effectively improve pollutant removal and mitigate GHG emissions. Under antibiotic stress, however, introducing a tolerant keystone such as C. riparius may be a more effective strategy for achieving both water quality improvement and climate mitigation.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Jiayu Feng,Ruoxu Liu,Xuejin Yang,Shuo Cui,Rui Cao,Ping Ning,Fang Wang,Zibin Pan,Lijuan Jia
Efficient removal of the highly toxic gas phosphine (PH 3 ) from various exhaust gases is a major challenge. To address this, we developed a cost-effective NiO/TiO 2 adsorbent (Ni X /TiO 2 ) via facile impregnation, achieving efficient anaerobic PH 3 removal at a low temperature (350 °C) with an exceptional breakthrough capacity of 232.23 mg(PH 3 ) g −1 . Characterization revealed that superior performance stems from abundant surface basic sites, developed porosity, and strong NiO-TiO 2 interfacial interactions promoting PH 3 adsorption and dissociation. During PH 3 capture, phosphorus incorporation transforms active NiO into Ni 2 P species, leading to adsorbent deactivation. Crucially, recognizing the photocatalytic potential of both TiO 2 and Ni 2 P, we repurposed the spent adsorbent as a Ni 2 P/TiO 2 heterojunction photocatalyst. Proof-of-concept experiments demonstrated its high efficacy in visible-light-driven wastewater treatment, achieving 91 % degradation of malachite green (MG). This work advances PH 3 purification technology while establishing a sustainable circular economy strategy via repurposing deactivated adsorbents into photocatalysts, aligning with resource conservation and recycling.
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MATERIALS RESEARCH BULLETIN
·
2025
·
IF 5.7
Yuan Zhang,Yongtao Tan,Fengwei Tuo,Haorui Liu,Ning Mi,Jiantie Xu
Vanadium nitride (VN) has attracted significant attention as a promising electrode material for supercapacitors mainly owing to its high theoretical specific capacitance and broad electrochemical stability window. However, poor cycling stability caused by dissolution in alkaline electrolyte largely restricts its practical applications. Herein, a series of heterojunction Fe 3 C/VN/C- x composites were synthesized via a one-step pyrolysis strategy for pyrolysis mixture of iron-vanadium precursor and melamine at 700 °C for 2 h. Among the series, the optimized Fe 3 C/VN/C-2 exhibits a high specific capacitance of 291.2 F g -1 at 0.5 A g -1 , which is 2.7 times higher than pristine VN with 108.3 F g -1 . Moreover, the Fe 3 C/VN/C-2 enables asymmetric supercapacitor device (Ni(OH) 2 ||Fe 3 C/VN/C-2) achieving a high energy density of 14.9 Wh kg -1 with high power density of 400.1 W kg -1 and a high power density of 3998.6 W kg -1 with an energy density of 6.2 Wh kg -1 , and retaining 92.7 % of its initial capacitance after 10,000 cycles (17.2 F g -1 ). The enhanced electrochemical performance of Fe 3 C/VN/C-2 is attributed to the synergistic effect of the heterojunction and carbon matrix, which suppress vanadium dissolution and accelerate charge transfer kinetics.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2025
·
IF 7.7
Xingxing Yu,Faxun Wang,Huakang Zong,Yufei Gan,Guotao Duan,Yuanyuan Luo
The modification of ionic liquid electrolytes is of particular importance for the development of high-performance electrochemical oxygen sensors with zero power consumption but still quite challenging. Herein, we designed and synthesized an electrochemical oxygen sensor based on the modified Pt/CMK-3-COOH-[EMIM][OAc] ionic liquid as composite electrolyte, where the -COOH functional group was introduced by acidifying CMK to provide hydrogen protons, and then Pt nanoparticles with different contents were loaded to improve the activity of the sensor towards O 2 gas as well as the conductivity of ionic liquid. Such composite ionic liquid sensor exhibits excellent O 2 detection ability with high sensitivity (0.58 μA/[%O 2 ]), high stability, wide detection range (0.4-10%), and zero-power consumption, along with the detection limit as low as 0.4%. Furthermore, it has humidity-independent gas-sensing characteristic. Moreover, density functional theory (DFT) calculations combined with experimental results were applied to deeply unveil the improved O 2 sensing mechanism. Compared with CMK, the introduction of Pt/CMK-3-COOH material increases the conductivity of the ionic liquid, decreases the adsorption energy of the sensor for O 2 and hydrogen protons, promotes the oxygen reduction reaction, and simulates the transfer of effective charge, thereby significantly improving O 2 sensing. This work provides a high-performance ionic liquid oxygen sensor, showing potential application in zero-power consumption and low concentration O 2 detection.
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Journal of Materials Chemistry A
·
2025
·
IF 9.5
Wen Li,Feng Yue,Mengke Shi,Lingji Zhang,Shuo Zhang,Yankai Xie,Fuyong Liu,Weifeng Zhou,Hongxia Chao,Shi Tang,Nan Liu,Hongzhong Zhang
Thermally assisted photocatalytic CO2 conversion into high value-added chemicals represents an effective strategy for carbon emission reduction and circular carbon economy. This study constructed an integrated gas–solid interface thermally assisted photocatalytic system using NH2-MXene/TiO2/NH2-MIL-125 (Ti-NMT), achieving in situ CO2 capture from industrial flue gases and its efficient conversion to carbon monoxide (CO) with a production efficiency of 332.43 μmol g−1 h−1, along with 100% selectivity, and 94% activity retention over 5 cycles. The exceptional catalytic performance is attributed to MXene's metallic conductivity for rapid interfacial electron transfer, amine-induced Lewis acid–base interactions that enhance CO2 adsorption via dual-binding sites, and charge separation driven by synergistic S-scheme heterojunction and Schottky barrier effects. In addition, MXene's localized surface plasmon resonance (LSPR) effect boosts hot carrier density and reduces the activation energy of the catalytic reaction. This work resolved critical bottlenecks through heterointerface engineering and functional group optimization, providing both a viable pathway and experimental validation for industrial flue gas CO2 capture and resource recovery.
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ACS Applied Polymer Materials
·
2024
·
IF 4.4
Shuai Han,Junjian Yu,Fei Wang,Xiangwei Li,Hongzhe Ni,Yuchao Wang,Zhe Wang
Zeolite is a commonly utilized filler in mixed matrix membranes (MMMs) to enhance the effectiveness of gas separation due to its molecular sieving properties with high separation coefficients. However, the compatibility and suitability between the zeolite and the polymer membrane are prerequisites for preparing homogeneous membranes and an essential factor affecting gas separation performance. Herein, we synthesized nucleus-crown-crown structures by surface modification of SOD zeolite and prepared MMMs by doping them into Polymers of Intrinsic Microporosity (PIM-1) for efficient gas separation. FTIR, XRD, SEM, and TGA characterized the fillers and the MMMs. The average particle size of the filler was estimated to be approximately 552.43 nm by SEM images. The surface-modified SOD zeolite facilitates the rapid permeation of specific gas molecules and enhances the dispersion of SOD zeolite in the PIM-1 membrane, thereby improving gas separation performance. Compared with pure PIM-1 membrane, the MMMs with a loading of 7 wt % exhibited CO2 and H2 permeabilities reaching up to 7000.0 and 3600.0 Barrer; their selectivities for CO2/N2 and H2/N2 were measured at 17.7 and 9.29, respectively. MMMs with the best fill ratios exceeded the 2008 Robeson upper limits. The methods for surface modification of SOD zeolites provide a new way for the application of SOD zeolite in the area of gas separation.
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JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
·
2024
·
IF 5.7
Cheng Wang,Lian Duan,Binwang Yang,Zhixiong Ye,Jianna Yu,Jiaxu Liu,Xiuqin Zheng,Qi Yang,Guoxin Jing,Wen Liu,Wenshan Li,Wenjie Liu
Herein, we develop a novel method using gas chromatography-ion mobility spectrometry (IMS) with an ammonia dopant for the determination of volatile N-nitrosamines in meat products. The IMS system was implemented with Fourier deconvolution multiplexing to simultaneously improve the resolving power and sensitivity. The ammonia dopant mitigated the formation of N-nitrosamine dimer ions, suppressing the ionization of interferents and shifting the reactant peak from hydrated protons to hydrated ammonium ions. The ammonium adduct product ions of N-nitrosamines were confirmed using time-of-flight mass spectrometry. The instrument limits of detection and quantitation for nitrosamines were 0.78–1.79 and 2.60–5.82 ng/mL, respectively, with recoveries between 71.39% and 110.59% using a simple water distillation method. The developed method showed satisfactory performance when applied to the detection of nitrosamines in various meat products.
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CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2024
·
IF 3.7
Zhirong Zhang,Linhui Sun,Xu Huo,Xianggui Liu,Xiuxiu Pan
Carbon Dioxide capture, oil displacement and Storage (CCUS-EOR) projects inject captured carbon dioxide into developed reservoirs suitable for gas displacement. However, due to the strong heterogeneity of the reservoir, the CO 2 channeling is seriously. In this study, using tung oil as renewable chemical raw material, environmentally friendly surfactants and hydrophobic nano-SiO 2 were synthesized as the main components of smart gel system. Fourier transform infrared (FT-IR), nuclear magnetic resonance spectrum (NMR) and thermogravimetric analysis (TGA) were used to characterize the chemical structure. The smart gel system was obtained through the CO 2 response experiment. The system can cycle back and forth between low and high viscosity multiple times, and a good temperature resistance and salt resistance. The results of rheological experiments and dynamic light scattering show that the nanoparticles promote the growth and entanglement of WLMs. The plugging capacity and auxiliary CO 2 -EOR performance of the system were evaluated through the laboratory displacement test. The intelligent response system has good gas channeling plugging ability, plugging efficiency reaches 97 %, and CO 2 flooding oil recovery efficiency increases by 22.2 %. In addition, in the acute toxicity assessment, the bio-based gel system from plants showed slightly toxic, which is expected to become a new generation of green oilfield chemicals.
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危险品化学品经营许可证（带存储）