JOURNAL OF CHROMATOGRAPHY A
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2021
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IF 4.759
Lizhen Qiao,Ruiting Sun,Yuan Tao,Yang Yan
In the present work, several new hydrophobic deep eutectic solvents (HDESs) were prepared with quaternary ammonium salts as hydrogen bond acceptors (HBAs) and salicylate esters as hydrogen bond donors (HBDs). Then, the obtained HDESs were used as extraction solvents to establish an ultrasound-assisted dispersive liquid-liquid microextraction method combined with high-performance liquid chromatography-ultraviolet detection technique for the determination of four endocrine-disrupting phenols (EDPs) compounds. One of the obtained HDESs composed of tetrabutylammonium chloride (N 4444 Cl) and methyl salicylate possessed a viscosity of 89.28 mPa•s lower than most reported ionic HDESs (>200 mPa•s), and the low viscous HDES was selected as the optimal extraction solvent. Several key parameters affecting the extraction efficiency were investigated, including the type and volume of HDES, ultrasound time, sample solution pH and salt addition. Under the optimized experimental conditions, the proposed method had good coefficients of determination ( R 2 > 0.9976) in the linear range of 0.5–400 µg•L −1 , the limits of quantification and limits of detection respectively were 0.5–2.5 µg•L −1 and 0.25–1 µg•L −1 , and the recoveries were in the range of 81.79–109.82%. Finally, the method was used for the preconcentration and determination of EDPs in different samples, including bottled water, tea beverage and milk.
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ACS Applied Materials & Interfaces
·
2021
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IF 9.229
Kai Wang,Huaqiang He,Baibing Wei,Tian C. Zhang,Haiqing Chang,Yingqi Li,Xiaobao Tian,Yubo Fan,Ying Liang,Shaojun Yuan
Surfaces with unusual under-liquid dual superlyophobicity are attractive on account of their widespread applications, but their development remains difficult due to thermodynamic contradiction. Additionally, these surfaces may suffer from limited antifouling ability, which has restricted their practical applications. Herein, we report a successful in situ growth of a hybrid zeolitic imidazolate framework-8 and zinc oxide nanorod on a porous poly(vinylidene fluoride) membrane (ZIF-8@ZnO-PPVDF) and its application as a self-cleaning switchable barrier material in rapid filtration for emulsified oily wastewater. The novel ZIF-8@ZnO-PPVDF exhibits superior mechanical strength, reversible under-liquid dual superlyophobicity, photocatalytic self-cleaning property, and an effective alternate separation capacity toward both oil-in-water (O/W) and water-in-oil (W/O) emulsions with ultrahigh fluxes and efficiencies (>99%). By simply using a “bait-hook-eliminate” method to separate the O/W emulsions containing soluble organic pollutants, we demonstrate that the ZIF-8@ZnO-PPVDF can achieve stable separation fluxes over 600 L m–2 h–1 with high efficiencies and be completely/nondestructively regenerated by visible-light irradiation after each cycle. This study would demonstrate a new approach to prepare an under-liquid dual superlyophobic revivable membrane for various applications.
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Sustainable Materials and Technologies
·
2023
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IF 9.6
Jinghan Guo,Yalin Wu,Yanhui Li,Shuangying Li,Zhi Li,Jingwen Niu,Chunmao Chen,Qingxiang Zhou
A creative electrochemical probe utilizing molecularly imprinted modified magnetic carbon dots was designed and fabricated. Carbon dots are a new kind of green, pollution-free, cheap and easy to obtain nanomaterials . The combination of Fe 3 O 4 and carbon dots improved the defect of ferric oxide being easy to aggregate, and their co-modification significantly enhanced the electrochemical activity of the electrode. Cyclic voltammetry and differential pulse voltammetry were executed to evaluate the electrochemical behavior of the co-modified electrode surface and performance of the probe. The constructed probe exhibited excellent selectivity and sensitivity for determining bisphenol AP in plastic products. The introduction of molecularly imprinted polymers endowed the sensor excellent selectivity, ensuring specific recognition of bisphenol AP. The fabricated sensor demonstrated a good two-stage linear range of 0.07–0.3 μM and 0.3–10 μM, and the detection limit was 0.027 μM. The constructed probe was validated to detect bisphenol AP in self-heating hot pot, instant noodle bucket and disposable plastic cup, and satisfactory results were achieved. These results indicated that the fabricated sensor was a cheap, rapid, and selective sensing-platform for detecting bisphenol AP, and could be employed as a reliable routine tool.
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MICROCHIMICA ACTA
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2023
·Vol. 191
·期 1
·1-12
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IF 5.7
Liu Xinyu,Yu Yang,Xie Tianhua,Cao Zijin,Li Zhiyan,Li Yuejing,Gu Yingqiu,Han Caiqin,Yang Guohai,Qu Lulu
Monolayer g-C 3 N 4 -modified Au/Ag nanorods (g-C 3 N 4 /Au/Ag NRs) array is fabricated as a dual-function platform with high surface-enhanced Raman scattering (SERS) response and excellent photocatalytic degradation ability for bisphenol A (BPA) residues. FDTD simulation results of Au/Ag NRs proves that the electromagnetic field intensity is significantly enhanced at the gap of Ag NRs and Au NPs and the protrusion of Au NPs, which endows the arrays with excellent SERS activity. The arrays exhibit high sensitivity for rhodamine 6G (R6G) (LOD = 1.1 × 10 -11 mol/L) and high SERS enhancement (EF = 9.2 × 10 7 ). In addition, the g-C 3 N 4 /Au/Ag NRs could degrade ˃90% of BPA adsorbed on the substrate surface within 140 min under visible light irradiation, and maintains its SERS activity after repeated use for 4 times. The dual-function platform with high SERS response and excellent recycling capability is proved to be reliable and is very promising for monitoring of BPA residues in food. Graphical abstract
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Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Yifan Zeng,Shiyong Sun,Rui Lv,Ke Wang,Yevgeny Aleksandrovich Golubev,Sen Lin,Faqin Dong,Elena Leonidovna Kotova,Olga Borisovna Kotova
In recent years, nanozymes have become promising alternatives to natural enzymes owing to their high catalytic efficiency, substrate specificity, and mild reaction conditions. The catalytic performance of nanozymes can be further improved by doping heterogeneous metals to provide high redox potentials . However, nanozymes for the degradation of endocrine-disrupting chemicals (EDCs) have been scarcely studied, and the degradation mechanisms remain unclear. Herein, a series of aminoclays (ACs) containing various metal dopants were prepared and employed for the degradation of phenolic compounds . The as-synthesized ACs with a Cu-Mn molar ratio of 1:7 (CuMnAC-1–7) showed excellent stability and superior activity for oxidizing bisphenol A (BPA) than natural laccases owing to the electron transport between Cu 2+ /Cu + and Mn 4+ /Mn 3+ in the nanozyme. The catalytic oxidation process of BPA consists of a non-free radical pathway mediated by Mn 3+ , as well as a free radical pathway facilitated by superoxide radicals (O 2 ·- ) and singlet oxygen ( 1 O 2 ). Specifically, Mn 3+ deprived the electrons of the BPA benzene ring to form phenolic hydroxyl radicals , which were then polymerized to BPA dimers. Cu + in the structure reduced Mn 4+ to Mn 3+ , accelerating the electron deprivation of BPA and promoting the polymerization reaction. Finally, the high-charge-density region on the dimeric benzene ring tended to lose electrons and form free radicals, facilitating the polymerization into trimers and tetramers. The CuMnAC-1–7 could remove 95% of BPA at a concentration of 200 mg/L within 1 h under acidic conditions. This study provides a new strategy to design high-performance laccase nanozymes for EDCs degradation .
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Journal of Environmental Chemical Engineering
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2023
·
IF 7.7
Enliang Zhang,Peng Zhao,Guogang Xu,Fanpeng Meng,Xinzhen Wang,Yuanhui Gao,Lulu Liu,Shaowei Jin
In recent years, micropollutants contamination in aquatic environments has received increasing attention. Bisphenol A (BPA), an endocrine-disrupting compound, has emerged as a substantial threat to water safety owing to its widespread presence in various aquatic environments. To address this issue, this study focused on the development of ceramic membranes incorporating manganese-cobalt oxides (MCOs) to catalyze the ozone-based degradation of BPA. The catalytic layer was prepared by hydrothermal in-situ growth method, which enhanced BPA degradation during water treatment and improved the ceramic membrane’s resistance to contamination. Moreover this study investigated the synergistic effect of catalytic ozone oxidation in mitigating ceramic membrane pollution and degrading micropollutants. The catalytic mechanism and the contamination modeling were examined systematically to determine the mechanism of micropollutant contamination on ceramic membranes. The experimental results showed that the modified ceramic membrane exhibited a higher BPA removal efficiency (90.6%) and flux recovery (99.5%) than the unmodified membrane (64.2% and 79%, respectively). Furthermore, the MCOs-modified ceramic membrane (CCM) effectively enhanced the generation of hydroxyl radicals during ozonolysis. This enhancement resulted in better degradation of organic pollutants in water, thus improving the quality of the treated water. The combination of ceramic membrane catalytic separation with ozone oxidation technology offers a potential solution for the degradation of emerging pollutants and the mitigation of ceramic membrane pollution.
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Biomass Conversion and Biorefinery
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2023
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IF 4
Zhang Xian,Liu Ze,Khan Hafiz Ihsan Ul haq,Barati Bahram,Parakhonskiy Bogdan,Skirtach Andre G.,Rousseau Diederik P. L.,Van Hulle Stijn
Nitrogen source–modified biochar was produced from rice straw–derived biochar (RSBC) via pyrolysis carbonization using nitrogen sources such as ammonium chloride, dicyandiamide, melamine, thiourea, and urea. The characteristics of the resulting biochars were compared, including their elemental compositions, surface functional groups, and morphology. The N-modified biochar contained N- and O-based groups (N–H, C–N, C≡N, O–H, and C–O), primarily consisted of mesopores (3.01 ~ 14.42 nm pore diameter), and had a specific surface area ranging from 95.87 to 167.86 m2 g −1 . The N-modified biochar’s BPA adsorption capacity was correlated to the activation temperature (correlation coefficient n = 0.5), with adsorption capacities varying from 7.43 to 63.09 mg g −1 . Ammonium chloride–modified biochar synthesized at 800 °C had over twice the BPA adsorption capacity of pristine biochar (28.80 mg g −1 ) among various nitrogen sources evaluated. The pseudo-second-order model characterized the adsorption kinetics of BPA, while the Freundlich model faithfully captured its isotherms. This study emphasizes the significance of proper nitrogen source selection and optimal modification temperatures to enhance the BPA adsorption capacity of biochar. Graphical Abstract
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Environmental Progress & Sustainable Energy
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2023
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IF 2.8
Li Hua,Hui Zhao,Fanglin Dang,Lumengfei Yu,Ting Wei
Metal-loaded biochar (BC) catalytic systems are widely used for the removal of organic pollutants. However, there is still a lack of relevant research on the impact of different preparation conditions on the performance of synthetic materials. In the present research, CuO and Fe 2 O 3 were loaded on the surface of Ginkgo biloba BC by a hydrothermal method and a chemical co-precipitation method to prepare carbon-based metal catalytic materials. Bisphenol A (BPA) was selected as the target pollutant to study the activation effect of the metal-loaded BC to persulfate (PS). The results showed that the catalytic performance of the CuO/BC materials was better than that of Fe 2 O 3 /BC and Fe 2 O 3 /CuO/BC. By exploring the influence of the preparation process on the catalytic performance, it can be obtained that the optimal calcination temperature was 350°C and the optimal loading ratio was 2.5:1(w/w) for CuO/BC materials. The CuO/BC prepared under this condition could remove 81.5% of BPA within 60 min. The research results are beneficial to promote the efficient utilization of metal-loaded BC in the field of organic pollutant removal.
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
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2023
·
IF 11.4
Guiping Liu,Kai Chen,Zhiming Wu,Yanhan Ji,Lianghua Lu,Songmeng Liu,Zhi-Ling Li,Rong Ji,Shuang-Jiang Liu,Jiandong Jiang,Wenjing Qiao
Tetrabromobisphenol A (TBBPA), a widely used brominated flame retardant in electronics manufacturing, has caused global contamination due to improper e-waste disposal. Its persistence, bioaccumulation, and potential carcinogenicity drive studies of its transformation and underlying (a)biotic interactions. This study achieved an anaerobic enrichment culture capable of reductively dehalogenating TBBPA to the more bioavailable bisphenol A. 16S rRNA gene amplicon sequencing and quantitative PCR confirmed that successive dehalogenation of four bromide ions from TBBPA was coupled with the growth of both Dehalobacter sp. and Dehalococcoides sp. with growth yields of 5.0 ± 0.4 × 108 and 8.6 ± 4.6 × 108 cells per μmol Br– released (N = 3), respectively. TBBPA dehalogenation was facilitated by solid humin and reduced humin, which possessed the highest organic radical signal intensity and reducing groups −NH2, and maintained the highest dehalogenation rate and dehalogenator copies. Genome-centric metatranscriptomic analyses revealed upregulated putative TBBPA-dehalogenating rdhA (reductive dehalogenase) genes with humin amendment, cprA-like Dhb_rdhA1 gene in Dehalobacter species, and Dhc_rdhA1/Dhc_rdhA2 genes in Dehalococcoides species. The upregulated genes of lactate fermentation, de novo corrinoid biosynthesis, and extracellular electron transport in the humin amended treatment also stimulated TBBPA dehalogenation. This study provided a comprehensive understanding of humin-facilitated organohalide respiration.
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2023
·
IF 11.4
Mengxi Tan,Xiaoshan Zheng,Wanchao Yu,Baoliang Chen,Chiheng Chu
Reactive oxygen species (ROS) are widespread in nature and play central roles in numerous biogeochemical processes and pollutant dynamics. Recent studies have revealed ROS productions triggered by electron transfer from naturally abundant reduced iron minerals to oxygen. Here, we report that ROS productions from pyrite oxidation exhibit a high facet dependence. Pyrites with various facet compositions displayed distinct efficiencies in producing superoxide (O2• –), hydrogen peroxide (H2O2), and hydroxyl radical (•OH). The 48 h •OH production rates varied by 3.1-fold from 11.7 ± 0.4 to 36.2 ± 0.6 nM h–1, showing a strong correlation with the ratio of the {210} facet. Such facet dependence in ROS productions primarily stems from the different surface electron-donating capacities (2.2–8.6 mmol e– g–1) and kinetics (from 1.2 × 10–4 to 5.8 × 10–4 s–1) of various faceted pyrites. Further, the Fenton-like activity also displayed 10.1-fold variations among faceted pyrites, contributing to the facet depedence of •OH productions. The facet dependence of ROS production can greatly affect ROS-driven pollutant transformations. As a paradigm, the degradation rates of carbamazepine, phenol, and bisphenol A varied by 3.5–5.3-fold from oxidation of pyrites with different facet compositions, where the kinetics were in good agreement with the pyrite {210} facet ratio. These findings highlight the crucial role of facet composition in determining ROS production and subsequent ROS-driven reactions during iron mineral oxidation.
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ACS Applied Polymer Materials
·
2023
·
IF 5
Yi Liu,Ling Yuan Liao,Wen Hong Ruan,Ming Qiu Zhang,Li Weihao
With the soaring development of device integration, miniaturization, and high frequency, electric devices have put forward synchronous and urgent requirements for thermal management composites with insulation, high thermal conductivity (TC), and low dielectric properties. However, due to phonon scattering and interfacial polarization, these performance requirements are difficult to meet simultaneously. In this work, based on the principles of interfacial engineering, hexagonal boron nitride (BN) was functionalized with methylvinyldimethoxysilane (MVDMS), and poly(phenylene oxide) (PPO) was modified by methacrylic anhydride. Owing to the introduction of reactive groups, the reaction between modified BN (BN@Si) and modified PPO (MPPO) in the mixing process enhances the interfacial forces, improves filler dispersions, and helps to reduce phonon scattering and interfacial polarization. The resulting polymer composites have a high TC of 5.21 W/(m K) at 70 wt % filler loading, 20.7 times than that of the pure MPPO resin, low dielectric loss of 0.00252, and high thermal stability. It is shown that interfacial regulation is crucial for BN@Si/poly(phenylene oxide) composites. The obtained composites hold great potential as thermal management materials for 5G electronic devices.
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APPLIED CATALYSIS A-GENERAL
·
2023
·
IF 5.5
Sisheng Guo,Yuqi Zheng,Xinyue Zhang,Xinying Lei,Hongfei Sun,Tao Wen
MXenes materials are burgeoning candidates for advanced water purification . However, the self-restacking and surface passivation of MXenes severely hamper the utilization of their electronic properties and surface reactivity. Herein, we employed the strategy of carbon nanoplating stabilization of MXenes for not only effectively stabilizing the structure of MXenes but also providing nucleation growth of MnO 2 . The MXene@C@MnO 2 -activated PMS system was able to degrade ∼ 100% of bisphenol A (BPA) (20 mg/L) within 4 min with the turnover frequency (TOF) of 8.14 min −1 . Specifically, the generation of superoxide radicals by activation of peroxymonosulfate (PMS) through reversible redox cycling between Mn(IV) and Mn(III) cations was regarded as the crucial driver of BPA removal. The scale-up experiment in actual water bodies achieved more than 90% BPA removal at 1200-bed volumes with stable catalytic properties during 20 h continuous operation. This work offers a potential macroscopic MXene-based nanohybrids for advanced oxidation processes .
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危险品化学品经营许可证（带存储）