Materials
·
2022
·Vol. 15
·期 12
·4058
·
IF 3.748
Haijie He,Kuan Chai,Tao Wu,Zhanhong Qiu,Shifang Wang,Jie Hong
Organic dye rhodamine B is one of the common organic pollutants in the water and soil environment. This study investigated the feasibility of removing rhodamine B from an aqueous solution through adsorption by kaolin, kaolin-sodium bentonite, and kaolin-organic bentonite. Batch adsorption test results showed that the maximum adsorption quantities of kaolin, kaolin-sodium bentonite, and kaolin-organic bentonite were 7.76 mg/g, 11.26 mg/g, and 12.68 mg/g, respectively, implying that the addition of bentonite to kaolin can effectively improve its adsorption capacity for rhodamine B. Moreover, the Langmuir isotherm model is suitable to describe the adsorption of rhodamine B by kaolin and kaolin-sodium bentonite, while it is preferable to use the Freundlich isotherm model in the case of kaolin-organic bentonite. The adsorption kinetic characteristics of rhodamine B, by these three adsorbents, are suitable to be described with a pseudo-second order kinetic model. Furthermore, the characteristics of the above three adsorbents were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR). The above results indicated that kaolin and organic bentonite can be used to design efficient adsorbents for organic pollutants similar to rhodamine B.
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
JOURNAL OF THE CHINESE CHEMICAL SOCIETY
·
2023
·Vol. 70
·期 7
·1481-1492
·
IF 1.8
Jia-Rong Xue,Rong-Chao Xue,Pei-Yao Chen,Yong Wang,Li-Ping Yu
In this study, a hydrostable Z-scheme Ag/CsPbBr 3 /Bi 2 WO 6 photocatalyst was designed and fabricated for the degradation of Rhodamine B (RhB). The structural instability of CsPbX 3 perovskites in water is one of the main obstacles that restrict their practical application in photocatalytic wastewater treatment. The photocatalyst was prepared in three steps: passivation of CsPbBr 3 nanocrystals (NCs) with 3-mercaptopropionic acid (MPA), construction of a heterojunction between MPA-passivated CsPbBr 3 NCs and Bi 2 WO 6 ultrathin nanosheets, and doping Ag nanoparticles as charge mediators in the heterojunction. The as-obtained 5%Ag/20%CsPbBr 3 /Bi 2 WO 6 exhibits good stability and excellent photocatalytic activity. The degradation rate is 93.9% in 120 min, which is 4.41 times than that of Bi 2 WO 6 .
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
BIOMEDICAL CHROMATOGRAPHY
·
2025
·Vol. 39
·期 5
·e70068
·
IF 1.7
Sanwen Li,Qing Shao,Hongqun Qiao
Schisandrin B (Sch B), a natural lignan extracted from schisandra chinesis, has exhibited various pharmacological activities including anticancer effects. However, studies on the preclinical toxicokinetic profile of Sch B have not been publicly reported. This study aimed to investigate the preclinical concomitant toxicokinetics of multiple administration of Sch B. Sch B was administered orally to rats and dogs at 150, 300, and 600 mg/kg/day and 50, 100, and 200 mg/kg/day, respectively, for 26 weeks. Plasma concentrations of Sch B were determined by a validated HPLC–MS/MS method. According to the toxicokinetic results, significant gender differences were observed in the rats, and females had higher exposures than males for each dosing group. Toxicokinetic analysis demonstrated a notable accumulation in the plasma of dogs during the repeated administration of Sch B, and the degree of accumulation increased with the increase of the dose. The findings of this study indicated that there were differences in the concomitant toxicokinetics of Sch B between rats and dogs. These results can inform clinical studies and provide valuable insights for future human Sch B risk assessments.
研究领域:
药理学
·
毒理学
·
分析化学
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产品关联
DOI
PubMed
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Jialong Ma,Yishuai Jing,Yuting Li,Shanbo Cui,Xin Zhao,Jiaming Song
The demand for water pollution control accelerated the development of environment-friendly technologies, e.g., photocatalysis, for resolving the pollution issue efficiently. Wide bandgap rare earth oxide semiconductors are potential photocatalysts with low toxicity for the environment, but the luminescence of rare earth ions and narrow light absorption band restrict their photocatalytic degradation efficiency. In this study, we synthesized a composite structure consisting of Eu 2 O 3 nanoparticles (NPs) and carbon-nanospheres (CNSs) by annealing both monomers in argon atmosphere together. The photocatalytic degradation performance of the composites with different mass ratios were investigated by utilizing rhodamine B (RhB) dye as the target organic pollutant. The results show that the combination with CNSs significantly improved the photocatalytic performance of Eu 2 O 3 , and the composite's highest removal efficiency reached up to 55 % within 60 min, which is competitive to those for other rare earth oxides. The improved photocatalytic degradation capacity for the composite structure was attributed to the luminescence suppression of Eu 3+ and the increased visible-light absorption by CNSs. Our research sheds light on the possible routes for enhancing the photocatalytic degradation capability of rare earth oxides in the environment pollution abatement.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Materials
·
2017
·Vol. 10
·期 11
·1247
·
IF 2.654
Tao Wang,Wei Sun,Xingyuan Zhang,Haiyan Xu,Fei Xu
Colored waterborne polyurethanes have been widely used in paintings, leathers, textiles, and coatings. Here, a series of black waterborne polyurethanes (WPUs) with different ratios of black dye, Sudan Black B (SDB), were prepared by step-growth polymerization. WPU emulsions as obtained exhibit low particle sizes and remarkable storage stability at the same time. At different dye loadings, essential structural, statistical and thermal properties are characterized. FTIR (fourier transform infrared) spectra indicate that SDB is covalently linked into waterborne polyurethane chains. All of the WPUs with covalently linked SDB show better color fastness and resistance of thermal migration than those with SDB mixed physically. Besides, WPUs incorporated SDB covalently with different polymeric diols, polytetramethylene ether glycol (PTMG), polypropylene glycol (PPG), poly-1, 4-butylene adipate glycol (PBA) and polycaprolactone glycol (PCL), were prepared to obtain different properties to cater to a variety of practical demands. By a spraying method, the black WPUs can be directly used as metal coatings without complex dyeing process by simply mixing coating additive and other waterborne resins, which exhibit excellent coating performance.Keywords:Sudan black B;waterborne polyurethane;polymeric dye;metal coatings
研究领域:
材料科学
·
高分子化学
·
涂层技术
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Tongzhou Li,Tao Huang,Qilin Wei,Wenchao Lin,Xiaoyan Lu,Xiaodong Shen,Shichao Zhou,Weizheng Liang,Bingsuo Zou
The [InX 4 ] − tetrahedron is a structure with stronger rigidity than the [InX 6 ] 3− octahedron, which makes it a possible blue light emitting material. In this study, the method of mixed B-sites is used to control the polyhedral transition in the crystal structure. In 3+ ions partially replace Pb 2+ ions to form the mixed B sites of Pb-In. The electronegativity difference of both causes clear energy transfer between Pb and In. The movement of the electron cloud causes a change in the polyhedral structure, which promotes the formation of [PbBr 5 ] 3− pyramid and [InBr 4 ] − tetrahedra. In this way, we have achieved the efficient blue light emission of [InBr 4 ] − tetrahedron for the first time. Under 372 nm UV light excitation, (PPh 3 H) 4 [PbBr 5 ][InBr 4 ] can achieve efficient blue emission, the photoluminescence quantum yield is 74.03 %, and the emission center at 463 nm. The rigid environment and the [InBr 4 ] − tetrahedron are the sources of the minor Stokes shift, and the self-trapping exciton of the zero dimensions [InBr 4 ] − tetrahedron is the source of efficient blue light emission. Meanwhile, we found that there are two optical transition processes between [PbBr 5 ] 3− and [InBr 4 ] − . One is the transfer from the excited state of [PbBr 5 ] 3− to the excited state of [InBr 4 ] − , and triphenylphosphine acts as the energy transfer medium of the two. The other is the transfer from the ground state of [PbBr 5 ] 3− (donor) to the excited state of [InBr 4 ] − (acceptor).
研究领域:
材料科学
·
光学
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产品关联
DOI
高影响因子
Food & Function
·
2024
·
IF 5.1
Lan Sang,Shuyu Yang,Ying Zhu,Zhigang Zhu,Binrui Yang,Ziguang Li,Xin Mao,Siling Chen,Chengsi Li,Jun Du,Xiao Zheng,Hua He,Jianheng Zheng,Yin Huang
B vitamins and probiotics are commonly used dietary supplements with well-documented health benefits. However, their potential interactions remain poorly understood. This study aims to explore the effects and underlying mechanisms of the combined use of B vitamins and probiotics by liquid chromatography-triple quadrupole mass spectrometry analysis, pharmacokinetic modeling, and 16S rRNA gene sequencing. By intragastric administration of seven B vitamins and three Lactobacillus strains to healthy rats (n = 8 per group), we found that probiotics significantly promoted the absorption (by approximately 14.5% to 71.2%) of vitamins B1, B3, B5, and B12. By conducting in vitro experiments (n = 3 per group) and a pseudo-germ-free rat model-based pharmacokinetic study (n = 6 per group), we confirmed that probiotics primarily enhanced the B vitamin absorption through gut microbiota-mediated mechanisms, rather than by directly producing B vitamins. Furthermore, we evaluated the effects of B vitamins and probiotics on the colon and gut microbiota by treating the pseudo-germ-free rats with blank solution, B vitamins, probiotics, and B vitamins + probiotics (n = 5 per group), respectively. Histopathological examination showed that the combination of B vitamins and probiotics synergistically alleviated the rat colon damage. High-throughput genetic sequencing also revealed the synergistic effect of B vitamins and probiotics in modulating the gut microbiota, particularly increasing the abundance of Verrucomicrobia and Akkermansia. In summary, the combined administration of B vitamins and probiotics may have a higher efficacy than using them alone.
研究领域:
营养学
·
微生物学
·
药理学
·
胃肠病学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Jianning Zhang,Yanpei Dang,Tianhao Li,Yangzhong Zhao,Liantai Duan,Ke Chen,Xiao Zhang,Hengli Duan,Wensheng Yan,Sihua Feng,Gang Shao,Zhaoju Yu,Qing Huang,Yujie Song
Silicon boron carbonitride (SiBCN) ceramics have garnered significant attention due to their exceptional high-temperature stability, resistance to creep, and favorable electrical properties. However, the ceramicization mechanism of covalently bonded boron atoms in polyborosilazane (PBSN), which is crucial in determining the structural and crystalline phase evolution of silicon boron carbonitride (SiBCN) ceramics through the polymer-to-ceramic process, still needs further clarification for the design of advanced ceramics. Therefore, PBSN precursors constructed with B–C bonds were systematically investigated in the polymer-to-ceramic conversion process. B–C bonds were transformed into B-N bonds between 300°C and 600°C, ultimately resulting in the formation of h-BN at high temperatures. Meanwhile, higher levels (8.11–14.12%) of B facilitated the formation of SiC at equivalent temperatures but hindered the formation of Si 3 N 4 crystal nuclei. That is due to the formation of B–N and NB 3 units, which inhibited the formation of Si–N bonds and SiN 4 units, thereby interfering with the nucleation process of Si 3 N 4 and facilitating the crystallization of SiC. This study offers valuable insights for regulating the microphase evolution and properties of PDC nanocomposites.
研究领域:
材料科学
·
陶瓷材料
·
聚合物衍生陶瓷
·
固态化学
·
高温材料
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产品关联
DOI
高影响因子
Chemical Biology & Drug Design
·
2022
·Vol. 100
·期 3
·305-312
·
IF 2.873
Shiyang Zhou,Xiaofeng Zhou,Gangliang Huang
In order to explore the potential anti-tumor activity functional molecules, a series of Fissitungfine B derivatives were designed and synthesized. Their anti-tumor activity effects on Hela, MCF-7 and A-549 cell lines were evaluated in vitro. The results showed that some of these Fissitungfine B derivatives exhibited moderate to good anti-tumor activities. Especially, compound 4 g with the highest inhibitory activities against all tested cell lines with the Hela was IC 50 = 3.82 ± 0.56 μM, MCF-7 was IC 50 = 5.53 ± 0.68 μM, and A-549 was IC 50 = 4.55 ± 0.53 μM. Furthermore, the compounds 4 g have higher inhibitory effects on TDP2 in vitro . In vivo, the biological activities assay results showed that the target compound 4 g had a good inhibitory effect on tumor growth . The target compound 4 g could inhibit tumor growth well, which might be use as a candidate drug or lead compound for further research and development anti-tumor agents.
研究领域:
药物化学
·
肿瘤学
·
合成化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Qizhou Dai,Lei Jiang,Xubiao Luo
Titanium based lead dioxide electrodes were successfully prepared by the method of electrodeposition in nitrate solution, including titanium base, Sn-SbO X interlayer, α-PbO 2 middle layer and β-PbO 2 active layer. Rhodamine B (RhB) was selected as the model pollutant to optimize the effects of operational factors in the electrochemical oxidation process. The removal of RhB and chemical oxygen demand (COD) were detected at different reaction time and the relative optimized results were achieved on condition of the concentration of supporting electrolyte, initial RhB concentration, pH value and applied current density at 0.1 mol/L, 200 mg/L, 4.4, and 20 mA/cm 2 , respectively. The kinetics results on RhB removal indicated that RhB degradation by electrochemical oxidation followed the pseudo- first-order reaction. Besides, UV-vis spectra revealed that the conjugated structure of RhB was easier and prior to be degraded. The intermediates generated in the solution were identified by GC/MS and a possible degradation pathway of RhB was proposed.
研究领域:
环境科学
·
化学工程
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产品关联
DOI
高影响因子
TETRAHEDRON
·
2017
·
IF 2.651
Yanmin Yao,Xiaobin Wang,Guangxin Liang
We report concise asymmetric total syntheses of tetracyclic marine alkaloids (+)-agelastatin A and (+)-agelastatin B using a cationic cyclization-based approach, which features straightforward transformations with cost-effective chemicals and reagents.
研究领域:
有机化学
·
药物化学
✓ 已验证
DOI
高影响因子
Materials Today Communications
·
2021
·
IF 3.383
Lei Hou,Chenyang Xie,Mohan Di,Hongzan Song,Yanfang Liu,Ming-tao Run
In order to prepare white fluorescent polymer materials, poly(ethylene succinate- co -cyclohexane dimethanol) (PESC) emitting blue fluorescence and poly (butylene terephthalate- co -propylene terephthalate) (PBTT) modified with 1,6,7,12-tetrachloroperylene tetracarboxylic acid dianhydride (TTAD) are prepared individually by melt polycondensation. Then the two polymers were linked to form a block polymer PESC- b -PBTT by chain extension reaction. The chemical structure, fluorescence emission and crystallization melting behavior of copolyesters are characterized by nuclear magnetic resonance (1H NMR), fluorescence spectrophotometer and differential scanning calorimetry (DSC). The effect of the ratio of PESC and PBTT in PESC- b -PBTT on the fluorescence properties of the products is discussed. The results shows that the fluorescence color of the material can be controlled by adjusting the proportion of each block in the PESC- b -PBTT copolymer. When the PESC’s content reaches 85wt%, the product emits white fluorescence which can be controlled by isothermal crystallization. Attributed to the increase of crystallinity and crystal size caused by the rise of isothermal crystallization temperature, blocking the energy transfer of blue light unit to orange light unit, the fluorescence of the sample turns to cool white gradually.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）