JOM
·
2024
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IF 2.1
Yu Shi,Pan Hong,Ju Jianbin,Xia Guangping,Huang Yipeng,Ruan Guihua,Jiang Fuyang
In this study, carbon spheres decorated with nickel nanoparticles (ACS@Ni NPs) were prepared through arginine-assisted hydrothermal treatment, followed by high-temperature carbonization in a nitrogen atmosphere. ACS@Ni NPs displayed uniform size and excellent monodispersity. The specific surface area increased from 9.03 m 2 /g to 428.69 m 2 /g after carbonization. The ACS@Ni NPs were employed as adsorbents in dispersive magnetic solid phase extraction (d-MSPE) to extract methylnaphthalene and acenaphthene. The adsorption capacities of ACS@Ni NPs for methylnaphthalene and acenaphthene were 1592.75 μg g −1 and 1652.83 μg g −1 , respectively. In addition, ACS@Ni NPs sustained adsorption efficiencies > 90% even after ten reuse times. Coupled with high-performance liquid chromatography-ultraviolet detection technology, under the optimum experimental conditions, the detection limits of methylnaphthalene and acenaphthene were 0.58 and 0.12 ng mL −1 . The recoveries of methylnaphthalene and acenaphthene in all samples remained > 95%, with relative standard deviations < 4.5%. The results indicated that ACS@Ni NPs could be applied in environmental pollution treatment and sample preparation.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2018
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IF 2.829
Li Lu,Yan Lin,Qiwei Chai,Shanying He,Chunping Yang
Rice bran, bamboo and the biochar derived from them were used as four sorbents for the removal of acenaphthene from aqueous solution. The effects of coexisting metal ions and organic compounds on their sorption performances were investigated. The sorption capacity of acenaphthene by biochar prepared from rice bran and bamboo was significantly higher than the raw biomass. The coexisting Cu 2+ and Cr(VI) both inhibited the sorption of acenaphthene by the biochar, whereas the sorption of acenaphthene by the biomass was less affected by the coexisting ions. The coexisting phenanthrene exhibited obvious competition with acenaphthene on the biochar, but it showed no competition with acenaphthene on the biomass. The partition process was a dominate sorption mechanism for acenaphthene on the biomass, which was not easily affected by the coexisting substances. Both partition and surface adsorption were enabled for acenaphthene on the biochar, and the latter was more affected by coexisting heavy metals and organic compounds.
研究领域:
环境科学
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生态学
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DOI
高影响因子
SYNTHESIS-STUTTGART
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2019
·Vol. 51
·期 23
·4425-4433
·
IF 2.867
Yong Jian,Ming Chen,Chao Yang,Wujiong Xia
A small molecule, namely nitroacenaphthene, is reported for the first time as a recyclable visible-light photocatalyst for the construction of the C=N bond from sulfonyl azides and amines. This scalable, site-selective protocol provides a convenient way to access various sulfonyl amidines under mild conditions. Two reaction pathways are proposed, according to different transformation patterns.
研究领域:
有机化学
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光催化
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DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
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IF 6.707
Yuxuan Dai,Yuting Wang,Gancheng Zuo,Jijie Kong,Yang Guo,Cheng Sun,Qiming Xian
We report a simple strategy to synthesize the Ag 3 PO 4 nanopolyhedrons with regular morphology and uniform size under mild conditions. The photocatalytic properties of the composite were optimized by adjusting the content of Ag nanoparticles. The as-prepared photocatalysts were characterized and the photocatalytic performances were evaluated by the degradation of acenaphthylene (ANY) under visible-light illumination. The surface plasmon resonance (SPR) of appropriate Ag nanoparticles was generated on surface under visible light irradiation, which enhanced the absorption and utilization of visible light. At the same time, the conductivity of Ag promoted the separation and transfer of photogenerated carriers, provided active sites for the reaction, and enhanced the photocatalytic degradation efficiency through the generation of active species. As a result, the optimized composite exhibited enhanced visible-light photocatalytic activity of 0.03512 min −1 and higher removal rate of 97.3% for ANY (4 times and 1.8 times higher than that of pristine Ag 3 PO 4 , respectively), more photogenerated active species (h + and •O 2 – ) and relatively high stability (4 times of cycle experiments). In addition, the possible degradation pathway of ANY was proposed. The work of this paper has a crucial guiding significance for the working principle and design direction of silver semiconductor composite photocatalysts with surface plasmon effect.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2022
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IF 7.129
June Zhang,Kexin Wang,Jing Guo,Yong Huang,You Wei,Kun Jia,Yuan Peng,Huiqiang Lu
Acenaphthene is a polycyclic aromatic hydrocarbon (PAH) that is a widely distributed environmental pollutant that accumulates in organisms and leads to health risks in humans. Although acenaphthene is reported to be toxic to aquatic organisms, its effects of acenaphthene on the livers of these organisms have not been evaluated. Here, zebrafish were used as an experimental model. Zebrafish larvae were exposed to 4.5, 5.5, and 6.5 mg/L acenaphthene for 72 h while adult zebrafish were exposed to 1.5, 2, and 2.5 mg/L acenaphthene for 28 days. We investigated the mechanism by which acenaphthene causes liver toxicity in zebrafish. The results showed that acenaphthene affected the early development of zebrafish and led to mitochondrial damage by promoting the production of reactive oxygen species (ROS) resulting in oxidative stress. The expression of genes related to inflammation and apoptosis was analyzed, observing up-regulation of the pro-inflammatory factors IL-8 , TNF-α, and IL-6 . The pro-apoptotic genes p53 , Caspase-3 , and Bax and the Bax/Bcl-2 ratio were up-regulated, while the anti-apoptotic gene Bcl-2 was down-regulated. In addition, we investigated the effects of acenaphthene on liver metabolism. When exposed to acenaphthene, the glycogen content of the liver decreased, while lipid accumulation increased together with alterations in related indicators of liver metabolism. In conclusion, acenaphthene induced oxidative stress through ROS production, leading to mitochondrial damage and activation of pathways associated with inflammation and apoptosis, resulting in hepatotoxicity. This affects normal liver metabolism. Our results revealed the mechanism of hepatotoxicity in zebrafish acenaphthene, and provided new evidence for a more comprehensive understanding of the hepatotoxicity of acenaphthene.
研究领域:
环境毒理学
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分子生物学
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动物学
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生物化学
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DOI
PubMed
高影响因子
DYES AND PIGMENTS
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2021
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IF 4.889
Haifeng Lu,Lichao Xu,Hua Wang,Shengyu Feng
Fluorescent silicone polymers have attracted much attention owing to their strong fluorescence and high stabilities. However, most of these silicone polymers have suffered from fluorescence quenching caused by aggregation in high concentrations. In this work, 7, 11-diphenyl-8 H - acenaphth[1, 2 - f ] isoindole-8, 10 (9 H ) - dione functionalized polysiloxane (PMDF) with strong blue fluorescence was successfully synthesized via Diels-Alder reaction. Besides high thermal stability, PMDF showed unique aggregation-induced emission enhancement in high concentrations, indicating it is an excellent fluorescent silicone polymer in both disperse and aggregate state. Moreover, the product polymer showed highly sensitive fluorescence response to Fe 3+ , with low detection limit to 0.895 ppm and a high selectivity in the present of other metal ions. This work may open a new window for exploring fluorescent polymers as ideal probe for Fe 3+ .
研究领域:
材料科学
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分析化学
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高分子化学
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DOI
高影响因子
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
·
2020
·Vol. 34
·期 21
·e8899
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IF 2.2
Hanfeng Jin,Jiuzhong Yang,Aamir Farooq
Rationale Aromatic hydrocarbons play an important role in the formation and growth of polycyclic aromatic hydrocarbon (PAH) and soot particles. Measurements of their absolute photoionization cross-sections (PICSs), that benefit the quantitative investigation of mass spectrometry, are still lacking, however. Methods PICSs of some aromatic hydrocarbons were measured with tunable synchrotron vacuum ultraviolet photoionization mass spectrometry (SVUV-PIMS). Nitric oxide and benzene were chosen as standard references for PICS calibration, since their photoionization cross-sections are well documented in the literature. Binary liquid mixtures of the investigated molecules and their specific solvents were used in the measurements. Results The investigated aromatics include naphthalene, phenanthrene, 1-methylnaphthalene, indene, 2-/3-/4-methylphenylacetylene, 2-methylindene, diphenylacetylene, 1-/2-ethynylnaphthalene and acenaphthylene. Photo-induced fragments from the molecules were also observed with increasing photon energy. Conclusions Based on our measurements and literature data, PICSs of most aromatic molecules have very similar values beyond their ionization energies. However, molecules that contain the phenylacetylene structure have PICSs higher than other aromatics.
研究领域:
分析化学
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质谱学
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大气化学
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环境科学
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产品关联
DOI
PubMed
高影响因子
Catalysts
·
2024
·Vol. 14
·期 5
·311
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IF 3.8
Changzhao Chen,Zhe Yuan,Shenshen Sun,Jiacai Xie,Kunfeng Zhang,Yuanzheng Zhai,Rui Zuo,Erping Bi,Yufang Tao,Quanwei Song
Soil contamination by polycyclic aromatic hydrocarbons (PAHs) has been an environmental issue worldwide, which aggravates the ecological risks faced by animals, plants, and humans. In this work, the composites of nanoscale zero-valent iron supported on carbonylated activated carbon (nZVI-CAC) were prepared and applied to activate persulfate (PS) for the degradation of PAHs in contaminated soil. The prepared nZVI-CAC catalyst was characterized by scanning electron microscopy (SEM), X-ray diffractometer (XRD), Fourier transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). It was found that the PS/nZVI-CAC system was superior for phenanthrene (PHE) oxidation than other processes using different oxidants (PS/nZVI-CAC > PMS/nZVI-CAC > H2O2/nZVI-CAC) and it was also efficient for the degradation of other six PAHs with different structures and molar weights. Under optimal conditions, the lowest and highest degradation efficiencies for the selected PAHs were 60.8% and 90.7%, respectively. Active SO4−•and HO•were found to be generated on the surface of the catalysts, and SO4−•was dominant for PHE oxidation through quenching experiments. The results demonstrated that the heterogeneous process using activated PS with nZVI-CAC was effective for PAH degradation, which could provide a theoretical basis for the remediation of PAH-polluted soil.
研究领域:
环境科学
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化学工程
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土壤修复
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DOI
高影响因子
ANALYTICA CHIMICA ACTA
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2024
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IF 5.7
Min Sun,Jiaqing Feng,Yang Feng,Xubo Xin,Yali Ding,Juanjuan Feng
Background Because of the advantages of good selectivity , high sensitivity, and fast analysis, high performance liquid chromatography (HPLC) has become one of the modern analytical techniques in wide application range, such as biological analysis, environmental detection, pharmaceutical and food inspection, agriculture and other fields. The stationary phase greatly decides the chromatographic separation performance, so the development of novel stationary phase is most important for HPLC. Results Pyridyl conjugated microporous polymers (P-CMP) with one to four layers were modified on the surface of amino silica to obtain a novel core-shell material (SiO2@P-CMP) by the layer-by-layer assembly strategy and Chichibabin reaction . The relationship between the structure of SiO2@P-CMP and chromatographic performance was carefully investigated, and the retention mechanism was revealed. The interactions including π-π stacking, hydrophobic effect and hydrogen bond gradually enhanced with the increase of P-CMP layers on the silica surface. Compared with C18 column, SiO2@P-CMP columns displayed better separation selectivity for polycyclic aromatic hydrocarbons (PAHs). According to the relative retention values ( α ), the separation performance of SiO2@P-CMP columns ( α = 1.144–1.884) for PAH isomers and other analytes was obviously better than that of C18 column ( α = 0.998–1.487). Furthermore, the SiO2@P-CMP column with four layers was selected to separate different types of analytes (eight PAHs, four bisphenols , four estrogens and nine phthalates), and the peak order of analytes was different from that on the C18 column due to the influence of hydrogen-bonding and π-π interactions. The relative standard deviations (n = 10) of retention time and peak area on SiO2@P-CMP column were between 0.28 % and 1.98 %. Significance and novelty Pyridyl conjugated microporous polymer was introduced as the stationary phase for the first time in HPLC. The proposed column displayed better separation characteristics compared to Zorbax SB-C 18 column. It provided a new idea for the separation of small molecules and the development of chromatographic packing or extraction material.
研究领域:
分析化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Lilin Fang,Peng Cui,Dongni Liu,Xiaosi Sun,Hao Ren,Hanyu Zhang,Yan Huang,Wenshuai Zhu,Zhichang Liu
The polycyclic aromatic hydrocarbons (PAHs) are serious organic contaminants that are produced naturally and anthropogenically. The separation of PAHs by adsorption approach provides an efficient method to avoid the negative effects of PAHs pollution. In this study, cyclodextrin (CD) was grafted to chitosan (CS) by using glutaraldehyde as crosslinking agent to construct shaped CD-CS polymers and carbonization was executed subsequently. The carbonized β-CD-CS-1000 exhibited a significant increasement of BET surface area (CD-CS polymer: 1 m 2 ·g −1 ; β-CD-CS-1000: 1083 m 2 ·g −1 ) and great PAHs adsorption performance (anthracene: 106.34 mg/g; acenaphthylene: 41.02 mg/g). The adsorption kinetic behavior and the equilibrium adsorption process were further explored. β-CD-CS-1000 showed good cyclic adsorption capacity and anti-interference stability with the xylenes as interferon. Furthermore, the adsorbents based CD-CS can be synthesized at the gram-level in the lab and exhibited great adsorption capacity in real diesel. The large-scale preparation of shaped CD-CS adsorbents made it possible to be applied to the petrochemical industry.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
FOOD CHEMISTRY
·
2024
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IF 8.5
Guijiao Zhao,Chenhuan Wang,Min Kang,Lin Hao,Weihua Liu,Zhi Wang,Xiaodong Shi,Qiuhua Wu
Developing effective methods for highly sensitive detection of phenolic endocrine disruptors (EDCs) is especially urgent. Herein, a magnetic hydroxyl-functional porous organic polymer (M-FH-POP) was facilely synthesized by green diazo-couple reaction using basic fuchsin and hesperetin as monomer for the first time. M-FH-POP delivered superior adsorption performance for phenolic EDCs. The adsorption mechanism was hydrogen bonds, hydrophobic interaction and π-π interplay. With M-FH-POP as adsorbent, a magnetic solid phase extraction method was established for extracting trace phenolic EDCs (bisphenol A, 4- tert -butylphenol, bisphenol F and bisphenol B) in water and fish before ultra-high performance liquid chromatography tandem mass spectrometry analysis. The method displayed low detection limit (S/N = 3) of 0.05–0.15 ng mL −1 for water and 0.08–0.3 ng g −1 for fish. The spiked recoveries were 88.3 %–109.8 % with the relative standard deviations of 2.4 %–6.4 %. The method offers a new strategy for sensitive determination of phenolic EDCs in water and fish samples.
研究领域:
环境科学
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分析化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xudong Zhang,Yang Deng,Yanhua Liu,Fan Yang,Yugao Wang,Jun Shen
Carbazole is a highly value-added compound derived from crude anthracene. Deep eutectic solvents (DESs) have been extensively used as promising green solvents for the separation of target compounds from mixture. In this work, 135 acidic DESs, formed by combining 9 quaternary ammonium salts with 15 common acids, were screened based on the conductor-like screening model for real solvents (COSMO-RS) model. The four top-ranked DESs, including tetraethylammonium chloride (TEAC)/2 acetic acid (AA), TEAC/2 propionic acid (PA), tetrapropylammonium chloride (TPAC)/2AA, and TPAC/2PA were identified as suitable extractants for carbazole separation based on their performance index (PI). Among them, TEAC/2AA had the best separation performance for carbazole due to its highest PI value (1448.19). Liquid–liquid extraction experiments were performed, and the results were in good accordance with those predicted by COSMO-RS calculations. Therefore, TEAC/2AA was determined as the most promising DES for the carbazole separation. The extraction conditions of TEAC/2AA were optimized. The extraction efficiency (EE) and selectivity (SE) of carbazole were 97.67 % and 66.64 %, respectively, under the optimal extraction conditions (25 ℃, 5 min of extraction time, DES-oil mass ratio of 1:5, initial carbazole concentration of 5000 ppm). Additionally, the deionized water was employed to regenerate the DES and recovery of carbazole. The recycling performance of promising DES was also investigated. Finally, quantum chemical calculations and Fourier Transform Infrared spectroscopy (FT-IR) analysis were conducted to explore the separation mechanism. The results indicated that the separation of carbazole by DESs were predominantly dominated by hydrogen bonds and van der Waals interaction. This work provided a valuable reference for the selection and design of DES extractants to separate other high value-added components from mixture.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）