ACTA PHYSICO-CHIMICA SINICA
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2024
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IF 10.8
Changjun You,Chunchun Wang,Mingjie Cai,Yanping Liu,Baikang Zhu,Shijie Li
Photocatalytic wastewater decontamination techniques hold eminent promise in mitigating environmental deterioration, yet the lack of distinctive photocatalysts prevents their further large-scale application. Herein, an S-scheme heterojunction photocatalyst BiOBr/C 3 N 5 (BBN) was fabricated for efficiently dislodging micropollutants under visible light. Among the BBN samples, the optimal BBN-2 demonstrated exceptional activity in photocatalytic TC removal with a rate constant of 0.0139 min ‒1 , which surpassed that of pure BiOBr and C 3 N 5 by 0.6 and 2.8 times, respectively. The spatially segregated photoredox sites and efficient photo-carrier separation propelled by an internal electric field are found to play a cardinal role in promoting photoreaction kinetics. Moreover, BBN-2 exhibited remarkable resistance to environmental interference and stability, retaining a high activity level after five runs. Through active radical detection, •O 2 ‒ , h + and •OH were identified as the primary active species in the photocatalytic reaction process. This research would encourage the exploration of C 3 N 5 -based photocatalysts for environmental protection. Download: Download high-res image (91KB) Download: Download full-size image
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JOURNAL OF CHROMATOGRAPHY A
·
2025
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IF 4
Zhihao Li,Dihong Zhong,Haipeng Lin,Peiyin Li,Yongyi Li,Qingmei Huang,Lingzhi Yang,Xueji Zhang
Solid-phase microextraction (SPME) is essential for analyzing ultra-low concentration samples, such as trace drugs and environmental pollutants. Among various formats, pipette tip-based SPME (PT-SPME) stands out for its advantages in efficiency, automation, and flexibility. However, PT-SPME faces challenges such as material loss, high synthesis costs, and environmental impact. To address these issues, we developed a novel PT-SPME device by synthesizing Schiff-base covalent organic frameworks (COFs) in situ on diatomaceous earth (DE), which served as both a matrix and support. This approach significantly improved stability and reduced COFs consumption by 93.7 %. The DE@COFs were packed into pipette tips with a sandwich-like structure and used to extract polycyclic aromatic hydrocarbons (PAHs), with detection achieved through high-performance liquid chromatography coupled with fluorescence detection (HPLC-FLD). The method exhibited excellent sensitivity, with limits of detection (LODs) ranging from 2.05 to 52.5 pg/mL and limits of quantification (LOQs) from 15.0 to 159 pg/mL. It also demonstrated high accuracy, with recoveries between 87.05 % and 115.86 %, and strong repeatability, making it suitable for trace pollutant analysis in complex matrices This cost-effective and environmentally friendly PT-SPME system enhances extraction efficiency while reducing material usage, providing a practical and innovative solution for trace pollutant analysis in pharmaceutical and environmental applications.
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Energy Storage Materials
·
2024
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IF 18.9
Dengxu Wu,Jian Peng,Zhiwen Jiang,Lei Zhu,Yujing Wu,Chang Xu,Zhixuan Wang,Ming Yang,Hong Li,Liquan Chen,Fan Wu
Lithium-metal batteries with solid electrolytes (SEs) have emerged as promising electrochemical energy storage devices due to high energy density and safety. However , inherent challenges of deleterious lithium dendrite growth and poor interfacial stability hinder their practical application. Herein , a new type of room-temperature liquidous Li metal arene complex—Li-Phenanthrene (Phen)-Ether is explored to enable a 3D LiSi@Li-Phen-Ether (3D LSLL) anode with low cost, high safety and high ion/electron-conductivity. Symmetric cells with sulfide SE and 3D LSLL anode deliver an ultra-high critical current density (> 13 mA cm −2 ) and long cycle life (> 1000 h, 0.25 mA cm −2 ). Moreover, full battery (LFP/sulfide SE/3D LSLL) can operate at low-external pressure (0.5 MPa) and ambient temperature by introducing a flexible cathode/sulfide interlayer with high ion conductivity (2 mS cm −1 ). This unprecedented battery configuration demonstrates high-rate (2C) performance and long cycle life (over 300 cycles), which exceeds preciously-reported sulfide SE/lithium batteries at low stack pressures, and may open up a promising route for high-energy-density, cost-effective and safe rechargeable lithium batteries.
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CHEMOSPHERE
·
2024
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IF 8.1
Zongyi Tan,Haiyang Deng,Huali Ou,Xinni Wu,Zhianqi Liao,Huase Ou
Examining the adsorption efficiency of individual contaminants on microplastics (MPs) is resource-intensive and time-consuming. To address this challenge, combined laboratory adsorption experiments with model simulations were performed to investigate the adsorption capacities and mechanisms of MPs before and after aging. Our adsorption experiments revealed that aged polyethylene (PE) and polyvinyl chloride (PVC) MPs exhibited increased adsorption capacity for benzene, phenol, and naphthalene . Additionally, density functional theory (DFT) simulations provided insights into changes in adsorption sites, adsorption energy, and charge density on MPs. The π bond of the benzene ring emerged as a pivotal factor in the adsorption process, with van der Waals forces exerting dominant influence. For instance, the adsorption energy of benzene on pristine PE was −0.01879 eV. When oxidized groups, such as hydroxyl, carbonyl, and carboxyl, on the surface of aged PE became the adsorption sites, the adsorption energy increased to −0.06976, −0.04781, and −0.04903 eV, respectively. Regions with unoxidized functional groups also exhibited higher adsorption energies than pristine PE. These results indicated that aged PE had a stronger affinity for benzene compared to pristine PE, enhancing its adsorption. Charge density difference and energy density of states corroborated this observation, revealing larger π-bond charge accumulation areas for benzene on aged PE, suggesting stronger dipole interactions and enhanced adsorption. Similar trends were observed for phenol and naphthalene. In summary, the DFT calculations aligned with the adsorption experiment findings, confirming the effectiveness of simulation methods in predicting changes in the adsorption performance of aged MPs.
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JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 141
·期 27
·e55594
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IF 2.7
Zhen Zhang,Yue Wang,Shuai Lv,Hailin Cong,Youqing Shen,Bing Yu
In this work, a two-step activated swelling technique was effectively employed to successfully synthesize monodisperse porous poly(styrene-divinylbenzene) (PS-DVB) particles. Diazoresin (DR) transform an ionic bond into a covalent bond by photoreaction. Under ultraviolet irradiation, DR was used to covalently attach dichlorophenyl isocyanate to sulfonated PS-DVB microspheres. The novel photo-crosslinking reaction effectively overcomes the toxicity issues associated with conventional coupling agents and enables green production of chromatographic fillers. Modified PS-DVB particles were indeed commonly used as filler material for the separation of chiral compounds by high performance liquid chromatography (HPLC). The porous modified microspheres designed effectively separate benzoone, DL-mandelic acid, 2-phenylcyclohexanone, ibuprofen, 2-hydroxyl flavone, DL-cysteine, chloraniline maleate, hesperidin, and other chiral compounds by 100 mm column. It is noteworthy that the isocyanate-chitin modified microspheres are effective in separating chiral drugs (1000 μg/mL) within 5 min. Compared with ordinary microspheres, porous isocyanate-chitin modified microspheres showed better separation efficiency under the same conditions. The enhancement is attributed to the increase in their specific surface area. Consequently, they are a better choice of chromatographic packing matrix.
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Journal of Analysis and Testing
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2025
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IF 7
Li Han,Cui Yuanyuan,Zhen Changqing,Lin Xiaohui,Li Ke,Yang Chengxiong
Microporous organic network (MON) has emerged as efficient stationary phases for high-performance liquid chromatographic (HPLC) separation. Nevertheless, the inherent superhydrophobic networks made their applications limited in the reversed-phase (RP) mode. In this work, a novel amino acid L-cysteine (L-Cys) modified core-shelled microsphere MON@SiO 2 -L-Cys was synthesized via the efficient thiol-yne “click” reaction for hydrophilic interaction chromatography /reversed-phase liquid chromatography (HILIC/RPLC) mixed-mode chromatographic separation. Baseline separation of various hydrophilic and hydrophobic compounds including aromatic ketones, phthalate esters, alkylbenzenes, amines, polycyclic aromatic hydrocarbons, phenols, nucleosides, nucleic acid bases, sulfonamides, water-soluble vitamins, cephalosporin antibiotics, and estrogens was realized on MON@SiO 2 -L-Cys packed column based on the predesigned mixed-mode retention mechanisms. The MON@SiO 2 -L-Cys packed column also exhibited higher selectivity compared to bare SiO 2 , MON@SiO 2 without L-Cys, and C 18 packed columns, revealing the synergistic interactions of MON’s networks and the modified L-Cys molecules. This work provided a feasible way to construct a novel amphipathic MON-based stationary phase, broadened the application scope of MON for hydrophilic analytes, and uncovered the prospects of MON in mixed-mode HPLC.
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Water
·
2024
·Vol. 16
·期 17
·2537
·
IF 3
Bo Li,Hulong Liu,Xiaona Liu,Li Han,Jing Yang,Lingke Kang,Liuyuan Tang,Tianwei Qian
Bioremediation is a promising technique owing to its effectiveness, low cost, and environmental friendliness. Previous studies have focused on the degradation efficiency of polycyclic aromatic hydrocarbons (PAHs) in soil and water. However, the expression of PAH-catabolic genes in organisms involved in the degradation process has been rarely and unsystematically reported. In this study, a PAH-degrading strain—Pseudomonas aeruginosa(PQ249631)—was successfully isolated from coking-contaminated soil and used for PAH degradation in soil and water. Furthermore, the degradation of PAHs (naphthalene, fluorene, phenanthrene, anthracene, and pyrene) was investigated in single, binary, and mixture systems to explore the interaction of substrates. The results showed that when naphthalene was used as a cometabolite carbon source, the removal rates of fluorene, phenanthrene, anthracene, and pyrene increased from 14.33%, 17.25%, 6.61%, and 4.47% to 72.08%, 100.00%, 15.63%, and 6.63%, respectively. In a PAH mixture, the degradation rate of each PAH was higher when naphthalene, rather than glucose, was used as the cometabolite carbon source. Transcriptome analysis revealed significant differential expression of PAH-catabolic genes and ATP-binding cassette transporter-related genes under naphthalene stress. The enhanced degradation of PAHs could be attributed to the augmentation of the PAH metabolic pathway and membrane transportation, facilitating the transfer of PAHs to bacteria. These findings underscore the effectiveness ofP. aeruginosaas a PAH degrader and provide molecular insights into enhancing PAH degradation.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
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2024
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IF 8
Meipeng Jian,Yongjian Che,Mingchen Gao,Xiaoran Zhang,Ziyang Zhang,Chaohong Tan,Haiyan Li
Biochar has been proved as a promising and efficient filler in bioretention facilities for enhancing the stormwater pollutants removal. However, the migration behaviors of stormwater pollutants in biochar filled bioretention facilities is unclear. In this study, as one of the most typical stormwater pollutants, naphthalene was selected as an example and a HYDRUS-1D model was first used to understand the migration behavior of naphthalene in a bioretention facility. In comparison with the conventional bioretention soil media (sandy loam), the amended biochar filled bioretention cell showed that the naphthalene removal rate was enhanced by up to 10.1%. Meanwhile, the experimental data was well-fitted by the “two-site sorption model” in HYDRUS-1D model. Another, the effect of rainfall intensity on the naphthalene migration in both bioretention columns was further investigated. The HYDRUS-1D model fitting indicated that the increase in rainfall intensity promoted naphthalene migration by increasing hydraulic conductivity and water flux. In addition, static batch experiments revealed that the biochar filled fillers achieved about 50% higher adsorption capacity than sandy loam. The sensitivity analysis from the HYDRUS-1D model data verified adsorption coefficient K d and longitudinal dispersivity λ are the main factors affecting naphthalene migration. Finally, the model simulation displays that the proportion of naphthalene retained by the fillers was highest during high rainfall intensities, indicating that the fillers remain the most important fate for naphthalene. This study presents research on the behavior and mechanisms of stormwater pollutant transport through improved bioretention facilities.
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JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Yixin Kuang,Suxin Zhou,Yuefan Liu,Xiaoying Feng,Luyi Chen,Juan Zheng,Gangfeng Ouyang
The size of the adsorbent has the potential to influence extraction performance, but the size effect at the nanoscale is still poorly understood. In this study, organic-inorganic hybrid nanospheres (OIHNs) with controllable nanoscale sizes of 30, 50, and 100 nm were successfully prepared. These materials were further fabricated as solid phase microextraction (SPME) coatings with similar thicknesses, and coupled with gas chromatography-mass spectrometry (GC-MS) to investigate their extraction performance. The results showed that the extraction capacities of OIHNs for chlorobenzenes (CBs) and polycyclic aromatic hydrocarbons (PAHs) were much better than those of their corresponding derived carbon materials, despite the smaller specific surface areas and lower porosities of them. In addition, the enrichment performance increased significantly with decreasing particle size, and the OIHN-30 coating demonstrated the best performance, with enrichment factors ranging from 1098 to 6853 for CBs. Finally, a highly sensitive and practical analytical method was established with a wide linear range of 0.5–5000 ng·L −1 , and the limits of quantification (LOQs) were 0.43–1.7 ng·L −1 . The determinations of ultratrace CBs in five marine water samples and five fresh water samples were realized successfully. This study is expected to contribute to a deep understanding of the environmental effects of nanoparticles and the design of high-performance adsorbents.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Maolin Wang,Mi Deng,Gang Zhao,Yanchun Fan,Tianwen Liu,Ying Huang,Lan Peng,Haoyang Fu,Shengqiong Fang
The remediation of organic-contaminated water is a critical environmental challenge, and iron-based persulfate (PS) activation processes have emerged as a promising solution. However, the introduction of reductive sulfur species, while accelerating the Fe(III)/Fe(II) redox cycle, may also quench reactive species, potentially compromising the efficiency of Fenton-like systems. Here we systematically investigate the trade-off between accelerated Fe(III)/Fe(II) cycling and quenching effects in the zerovalent iron/PS (ZVI/PS) system using thiosulfate (TSF) as an activator. Our results show that low-level TSF (0.03–1.00 mmol/L) effectively facilitated the removal of naphthalene (Nap) and atrazine (ATZ), respectively. This enhancement is attributed to accelerated ZVI dissolution and FeS x formation, which promote the Fe(III)/Fe(II) cycle, with Fe(IV) was identified as the primary active species. However, high-level TSF (>1.0 mmol/L) drastically reduced Nap removal due to PS consumption and active species elimination. The optimal TSF dosage of 0.20 mmol/L (TSF/PS molar ratio of 1:10) demonstrated robust organic pollutant degradation, achieving a 22-fold increase in the rate constant ( k obs ) for Nap removal and 0.47–7.5-fold increases for ATZ removal. These findings highlight the potential of the TSF-ZVI/PS system as a versatile and efficient solution for degrading a wide range of organic pollutants, including PAHs and herbicides, in water treatment applications.
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JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Ziyue Li,Xiaolei Wang,Fei Peng,Ning Chen,Guodong Fang
The use of peracetic acid (PAA) in advanced oxidation processes has gained significant attention recently, but the knowledge of activating PAA to degrade polycyclic aromatic hydrocarbons (PAHs) is limited due to the variety and selectivity of reactive substances in PAA oxidation system. This paper presented the first systemically study on the degradation of PAHs by PAA activation in soil. It was found that heat-activated peracetic acid (heat/PAA) was capable of degrading phenanthrene (PHE) efficiently with degradation efficiency > 90 % within 30 min. Experimental results demonstrated that a series of reactive oxygen species (ROS) including organic radicals (RO • ), hydroxyl radicals (HO • ) and singlet oxygen ( 1 O 2 ) were generated, while acetylperoxyl (CH 3 C(O)OO • ) and acetyloxyl (CH 3 C(O)O • ) radicals were primarily responsible for PHE degradation in soil. Further analysis shows that polymerization products such as diphenic acid , 2′-formyl-2-biphenylcarboxylic acid and other macromolecules were dominant products of PHE degradation, suggesting polymerization driving PHE degradation instead of the conventional mineralization process. Toxicity analysis shows that most of the polymerization products had less toxicity than that of PHE. These results indicate that PAA activation was a highly effective remediation method for PAHs contaminated soil, which also provided a novel mechanism for pollutant degradation with the PAA activation process for environmental remediation.
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PLANT PHYSIOLOGY AND BIOCHEMISTRY
·
2024
·
IF 6.1
Siyue Liu,Jinge Xie,Wenqi Luan,Chen Liu,Xiwen Chen,Defu Chen
The current trend in agricultural development is the establishment of sustainable agricultural systems. This involves utilizing and implementing eco-friendly biofertilizers and biocontrol agents as alternatives to conventional fertilizers and pesticides. A plant growth-promoting fungal strain, that could alter root system architecture and promote the growth of Arabidopsis seedlings in a non-contact manner by releasing volatile organic compounds (VOCs) was isolated in this study. 26S rDNA sequencing revealed that the strain was a yeast-like fungus, Papiliotrema flavescens . Analysis of plant growth-promoting traits revealed that the fungus could produce indole-3-acetic acid and ammonia and fix nitrogen. Transcriptome analysis in combination with inhibitor experiments revealed that P . flavescens VOCs triggered metabolic alterations, promoted auxin accumulation and distribution in the roots, and coordinated ethylene signaling, thus inhibiting primary root elongation and inducing lateral root formation in Arabidopsis . Additionally, transcriptome analysis and fungal infection experiments confirmed that pretreatment with P . flavescens stimulated the defense response of Arabidopsis to boost its resistance to the pathogenic fungus Botrytis cinerea . Solid-phase microextraction, which was followed by gas chromatography-mass spectrometry analysis, identified three VOCs (acetoin, naphthalene and indole) with significant plant growth-promoting attributes. Their roles were confirmed using further pharmacological experiments and upregulated expression of auxin- and ethylene-related genes. Our study serves as an essential reference for utilizing P . flavescens as a potential biological fertilizer and biocontrol agent.
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