Sustainability
·
2022
·Vol. 14
·期 19
·12872
·
IF 3.889
Zihan Lang,Lidong Xue
Triclosan (TCS) has been widely employed as active ingredient in household products and has received attention for its hepatotoxicity, endocrine disruption and disturbance on immune function. Polylactic acid (PLA) has been highlighted as an alternative biodegradable microplastic, and the knowledge about the adsorption affinity towards TCS is limited. In this study, the ability to act as carrier of TCS by PLA and non-biodegradable microplastics, including polystyrene (PS), polyvinyl chloride (PVC) and polyethylene (PE) with different particle sizes were explored. The influence factors (e.g., dosage, pH and salinity), adsorption kinetics and isotherms were also investigated. Batch experiment results indicated that the TCS adsorption onto PLA and non-biodegradable microplastics exhibited a pronounced pH-dependent pattern (pH of 4, 7 and 10), and the adsorption capacity decreased gradually as pH increased. Furthermore, the adsorption capacity of TCS on PS, PVC and PE decreased as salinity increased from 0 to 3.5%, while no significant inhibition for the sorption capacity of PLA was observed. The adsorption kinetic data of TCS was best fitted with the pseudo-second order model. The Freundlich model with R2(0.999) was suitable to describe the adsorption isotherms of TCS on PLA, while the isotherms data of TCS on PS, PVC and PE was fitted by linear and Freundlich model. The higher adsorption capacity of PLA (38.6 mg g−1) compares to those of PS, PVC and PE (31.3, 11.4 and 9.64 mg g−1, respectively), illustrated by the fact that the physicochemical properties of microplastics have a noticeable impact on adsorption process, and the biodegradable PLA is a stronger vector than the non-biodegradable microplastics.Keywords:triclosan;polylactic acid;vector;pH-dependent
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2021
·Vol. 168
·期 10
·103507
·
IF 4.316
Fuhua Chen,Hao Guo,Lili Zhao,Xin Guo,Shunchang Li,Ying Chu,Xueying Wang,Yongping Zhu
As a cathode material for thermal batteries, WS2 has high thermal decomposition temperature and large specific capacity, but it is an intermittent semiconductor, with relatively low conductivity. This low conductivity can prolong the activation time and reduce the discharge specific capacity of thermal batteries. Here, we prepared WS2 with sulfur vacancies through a simple high-temperature annealing method and used electron paramagnetic resonance spectroscopy and X-ray photoelectron spectroscopy to detect the presence of sulfur vacancies. The result shows that sulfur vacancies were successfully introduced in WS2, and the existence of sulfur vacancies can effectively improve the discharge performance of thermal batteries. While maintaining the nanostructure, the thermal decomposition temperature still exceeds 1000 °C, which is far beyond the traditional FeS2 (550 °C) and CoS2 (650 °C) cathodes. The Li-B/LiF-LiBr-LiCl/WS2 with sulfur vacancies (treated at 500 °C) couple has higher discharge specific capacity (when the cut-off voltage is 0.5 V, it is 380.58 mAh g−1, which is 14.85% higher than the original WS2) and lower total polarization (about 21% lower than original WS2). This work provides a beginning for further study of sulfur vacancies defect materials as the cathode of thermal batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY
·
2021
·
IF 4.86
Zhengyuan Chen,Yuhuan Wu,Bixia Wang,Jiamin Fang,Changlian Gan,Chuanlan Sang,Zhu Dun,Tajie Luosang,Qing Wang,Dawa Zeren,Tianqin Xiong
Clinical studies have shown that Intrahepatic cholestasis is closely related to intestinal injury. The gut-liver axis theory suggests that the intestine and liver are closely related, and that bile acids are important mediators linking the intestine and liver. We compared two cholestasis models: a single injection model that received a single subcutaneous ANIT injection (75 mg/kg), and a multiple subcutaneous injection model that received an injection of ANIT (50 mg/kg) every other day for 2 weeks. We used Transmetil (ademetionine 1,4-butanedisulfonate) to relieve intrahepatic cholestasis in the multiple injection group. In the multiple injection group, we found increased hepatic bile duct hyperplasia, increased fibrosis of the liver, increased small intestine inflammation and oxidative damage, increased harmful bile acids, decreased bile acids transporter levels. After treatment with Transmetil, the liver and gut injuries were relieved. These results suggest that intrahepatic cholestasis can cause disorders of the gut-liver axis.
研究领域:
肝病学
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胃肠病学
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药理学
✓ 已验证
DOI
PubMed
高影响因子
FOOD QUALITY AND PREFERENCE
·
2025
·
IF 4.9
Lele Chen,Jianshe Chen,Xinmiao Wang,Yue He
Odor-induced saltiness enhancement is an effective strategy in reducing salt usage of foods, making the aroma transfer a saltiness-related factor during food consumption; yet the contribution of aerosol-mediated retro-nasal delivery is underexplored. Aerosol droplets are well-recognized as carriers of aroma compounds, and their generation can be sensitively influenced by salt content. Therefore, this study aimed to quantitatively evaluate aerosol generation from salt solutions within their typical food applications, as well as the resulting release and perception of four representative aroma compounds known to enhance saltiness using both trained ( n = 10) and untrained ( n = 40) subjects. As main results, NaCl was approved to significantly increase aerosol numbers and mass contents than pure water at the in-vitro tests (up to ∼110 fold, p < 0.05). Aroma compounds, congruent with saltiness, and with higher hydrophilicity (3-(methylthio) propanal and 2,5-dimethylpyrazine) or lower volatility (2-ethyl-3,5-dimethylpyrazine) were more prone to be transferred via aerosol. In contrast, the release of aroma compounds with hydrophobic and high volatility (dimethyl trisulfide), was primarily governed by molecular diffusion. Significant correlations were observed between the release content of aroma compounds and aerosol numbers ( p < 0.05). The aerosol-induced olfaction was approved via the sensory tests (dual reminder A-not A test and 15-cm linear scale), and the resulted saltiness intensity was depended on the aroma concentration. This is the first study to demonstrate that both aroma release and odor-induced saltiness enhancement can be modulated by presence of aerosol droplets, which is also sensitively affected by the salt content.
研究领域:
食品科学
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感官科学
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风味化学
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气溶胶物理
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嗅觉研究
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Zixi Li,Wenduo Chen,Jiayin Liu,Dazhi Jiang
The formation mechanism of ordered helical structures of conjugated polymers wrapping onto single-walled carbon nanotubes (SWCNTs) has been full of controversy in recent decades. A formation mechanism is proposed for the linear conjugated polymers wrapping around SWCNTs that the formation of helical structures is dependent on the orientation competition between backbone segments and side groups via transmission electron microscopy observations and molecular dynamics simulations. Results show that the conjugated polymers cannot always form stable helical structures, even if they have the capability to form a stable helix. In fact, only part of polymer segments presents a stable helix on the SWCNTs for the internal rotation in polymer deformations. Furthermore, a design framework is proposed to choose specific conjugated homopolymers and copolymers which can form helical structures on the SWCNTs.
研究领域:
材料科学
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聚合物化学
·
纳米技术
✓ 已验证
DOI
高影响因子
Food & Function
·
2016
·Vol. 7
·期 8
·3524-3530
·
IF 2.686
Yuhui Li,Kaiyong Liu,Jie Shen,Yehao Liu
Environmental exposure to pollutants such as heavy metals is responsible for various altered physiological functions that are detrimental to health. Cadmium (Cd) is one of the most representative toxic, non-essential elements that can contaminate food and water. This study evaluated the protective effects of wheat bran, a selected prebiotic with good Cd binding ability, against Cd toxicity in mice. Thirty mice were divided into control and therapeutic groups. The control group was fed a low dietary fiber diet with no Cd for 8 weeks. In the therapeutic group, 100 mg L−1 Cd was administered along with a diet of 10% wheat bran. First, the binding ability of wheat bran for Cd was measured along with the protection of cell growth in vitro by wheat bran. Second, the effectiveness of wheat bran in preventing Cd from entering mice organs was evaluated. Finally, restoration of gut microbiota from alterations caused by Cd was investigated. The results showed that wheat bran could bind most of the Cd ions and restore the growth rate of cells in vitro. The wheat bran treatment group showed that the bran effectively prevented Cd from entering mice organs. In addition, the bacterial community structure was restored because the toxicity of Cd to gut microbiota was eliminated by the wheat bran. Our results suggest that wheat bran is more effective against chronic Cd toxicity than traditional treatments because of its special physiological functions, and it can be considered as a new dietary, therapeutic strategy against Cd toxicity.
研究领域:
环境科学
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营养学
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微生物学
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毒理学
✓ 已验证
DOI
PubMed
高影响因子
PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY
·
2021
·
IF 3.963
Feixu Mo,Xianfeng Hu,Yi Ding,Rongyu Li,Youhua Long,Xiaomao Wu,Ming Li
Rice sheath blight is a destructive fungal disease caused by Rhizoctonia solani . To find a safe and green measure, the biological activity of six plant extracts against R. solani was determined by mycelial growth rate method. The results showed that magnolol possessed better antifungal activities against R. solani , with an EC 50 value of 7.47 mg/L. further action mechanism of magnolol against R. solani was carried out. Studies by scanning electron microscopy (SEM) showed that the morphology of R. solani mycelia was deformation and surface folds. Transmission electron microscope (TEM) observation on treated R. solani showed that magnolol could induce cytoplasmic membrane rupture and cytoplasmic membrane even disappeared completely accompanied with cellular debris was covered around this fungal, and the mycelia treated with magnolol showed fluorescence after PI staining. Further study showed that the content of malondialdehyde (MDA) and activity of chitinase , β-1,3-glucanase and relative conductivity of mycelia were increased, while the content of soluble protein and activities of catalase (CAT), polyphenol oxidase (PPO), superoxide dismutase (SOD), succinate dehydrogenase (SDH) and NAD-malate dehydrogenase (NAD-MDH) were significantly decreased. These results indicated that magnolol could significantly damage the plasma membrane of R. solani , and interfere with cell respiratory metabolism, thus inhibiting the growth of mycelium.
研究领域:
植物学
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真菌学
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药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Xiaohong Hu,Jia Wen,Haibo Zhang,Qian Wang,Caiya Yan,Lang Xing
The most important thing to do with hexavalent chromium (Cr(VI)) removal in wastewater through adsorption-reduction method is to find an adsorbent that has both strong adsorbability and reducibility. Herein, an eco-friendly material ZIF-8-EGCG, which was a combination of epicatechin gallate (EGCG) and ZIF-8, was synthesized to treat Cr(VI)-containing wastewater. At room temperature, the maximum adsorption amount of Cr(VI) reached 136.96 mg·g −1 , and the Cr(VI) reduction rate (96%) was much better than that of the original ZIF-8 (37%). Such outcome was among the best in the existing studies using MOFs to treat Cr(VI). In addition, the characterization results showed that the surface of ZIF-8-EGCG was electronegative. The material was irregular sphere with pore size of 7.12 nm and BET surface area of 113.02 m 2 ·g −1 . The well-fitted Langmuir adsorption isotherm and pseudo first/second-order kinetics model suggested that the adsorption of Cr(VI) on ZIF-8-EGCG was governed by both physical and chemical processes. Stability results revealed that the overall stability of ZIF-8-EGCG due to the etched structure was slightly inferior to ZIF-8, especially at higher temperatures (>35 °C). Simultaneously, the reaction between ZIF-8-EGCG and Cr(VI) was a spontaneous, exothermic, entropic decrease process.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Sciences
·
2015
·
IF 2.002
Shujuan Zhang,Li Wang,Fang Ma,Xue Zhang,Zhe Li,Shiyang Li,Xiaofeng Jiang
Our study sought to assess how much phosphorus (P) runoff from paddy fields could be cut down by fertilizer management and inoculation with arbuscular mycorrhizal fungi. A field experiment was conducted in Lalin River basin, in the northeast China: six nitrogen–phosphorus–potassium fertilizer levels were provided (0, 20%, 40%, 60%, 80%, and 100% of the recommended fertilizer supply), with or without inoculation with Glomus mosseae . The volume and concentrations of particle P (PP) and dissolved P (DP) were measured for each runoff during the rice growing season. It was found that the seasonal P runoff, including DP and PP, under the local fertilization was 3.7 kg/ha, with PP, rather than DP, being the main form of P in runoff water. Additionally, the seasonal P runoff dropped only by 8.9% when fertilization decreased by 20%; rice yields decreased with declining fertilization. We also found that inoculation increased rice yields and decreased P runoff at each fertilizer level and these effects were lower under higher fertilization. Conclusively, while rice yields were guaranteed arbuscular mycorrhizal inoculation and fertilizer management would play a key role in reducing P runoff from paddy fields.
研究领域:
农业生态学
·
土壤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL AND EXPERIMENTAL BOTANY
·
2022
·
IF 6.028
Xianbo Zhang,Hui Yang,Taisheng Du
Osmotic adjustment is an important mechanism for plants to withstand osmotic stress. The accumulation of Na + can improve the osmotic adjustment of plants and enhance the ability of plants to withstand osmotic stress. However, the Na + accumulation, osmotic stress, ion toxicity and oxidative damage of plants have not been fully explored under combined water and salt stress. The objectives of this study were to explore the effect of soil salinity on the drought tolerance of tomato. We set up four soil salinity treatments and three water treatments in 2019 and four soil salinity treatments and four water treatments in 2020. The salt was evenly mixed into the soil before the soil was filled into the growing area, and water treatment was carried out during the reproductive growth stage. Both water deficit and soil salinity reduced the dry matter accumulation of plants, but the interaction effect of water deficit and soil salinity on dry matter accumulation was less than that of single water stress when salt was added to the soil at 3 g/Kg dry soil. When water deficit was conducted, soil salinity enhanced osmotic adjustment more than aggravates osmotic stress. When the Na + concentration in the leaves was lower than 100 mmol/L, the Na + had little effect on the K + concentration. Furthermore, mild and moderate water deficit did not lead to further increases malondialdehyde content in leaves under mild soil salinity (salt was added to the soil at 3 g/Kg dry soil). When leaf Na + concentration was lower than concentration threshold (100–120 mmol/L in this study), osmotic adjustment was significantly enhanced, but there was no further significant influence on ion balance and oxidative damage, which effectively improved the drought resistance of tomato. Therefore, mild soil salinity may improve tomato yield under water deficit.
研究领域:
植物生理学
·
农业科学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Yan Cheng,Shanchi Wang,Zhiguang Xu,Lianyi Jiang,Yan Zhao
Oil-repellency of fabric is essentially based on perfluoroalkyl substances (PFAS, or called perfluorochemicals (PFCs)). However, plans to phase out the use of these chemicals, even those short-chain ones (C4-C6), have been announced because they accumulate in the human body and are extremely persistent in the environment. It is urgent to develop non-fluorine surface chemistry for oil-repellent fabric finishing. Here, we report the non-fluorine oil repellency of brush-like polydimethylsiloxane (PDMS) coating (g-PDMS), and the comparison of its oil repellency with that of a common PFAS crosslink polysiloxane coating (C 4 -PFAS). A catalyst-free, solvent-free chemical vapor deposition (CVD) process was used to prepare the g-PDMS coating. For smooth glass, g-PDMS coating exhibits ultralow contact angle hysteresis (∆ θ ) for various oils (1.3–7.3°), while the ∆ θ of C 4 -PFAS coating is much higher (30.7–49.7°). For fabrics, g-PDMS and C 4 -PFAS achieved almost the same contact angles to castor oil (~134°). According to GB/T 19977-2014 standard, the oil repellency of coated fabrics was rated Grade 5 for both g-PDMS and C 4 -PFAS. Therefore, the non-fluorine oil repellency of g-PDMS is able to meet the basic requirement of oil-repellent fabric finishing, and it is expected that the oil repellency can be further improved by the rational design on surface topography .
研究领域:
材料科学
·
化学工程
·
纺织科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF FLUORESCENCE
·
2023
·
IF 2.7
Liu Yinghua,Duan Wenxiu,Li Huiqing,Wu Jiang,Liu Dan,Mi Jiaying,Qi Shengda,Ren Cuiling,Chen Hongli
Multi-targets detection has obtained much attention because this sensing mode can realize the detection of multi-targets simultaneously, which is helpful for biomedical analysis. Carbon nanoparticles have attracted extensive attention due to their superior optical and chemical properties, but there are few reports about red emission carbon nanoparticles for simultaneous detection of multi-targets. In this paper, a red emission fluorescent carbon nanoparticles were prepared by 1, 2, 4-triaminobenzene dihydrochloride at room temperature. The as-prepared red emission fluorescent carbon nanoparticles exhibited strong emission peak located at 635 nm with an absolute quantum yield up to 24%. They showed excellent solubility, high photostability and good biocompatibility. Furthermore, it could sensitively and selectively response to hypochlorite and pH, thus simultaneous detection of hypochlorite and pH was achieved by combining the red emission fluorescent carbon nanoparticles with computational chemistry. The formation mechanisms of red emission fluorescent carbon nanoparticles and their response to hypochlorite and pH were investigated, respectively.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）