CHEMICAL ENGINEERING JOURNAL
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2024
·
IF 13.3
Yu Jiang,Si-Chao Liu,Li-Ping Zhang,Guo-Wei Guan,Yi-Tao Li,Shuang Ni,Run-Yuan Jiang,Su-Tao Zheng,Hao-Ran Liu,Hao-Ling Lan,Qing-Yuan Yang
The photocatalytic reduction of carbon dioxide (CO 2 ) to carbon-based materials is challenging because of its intricate nature and the generation of multiple byproducts. Hence, developing photocatalysts with a high CO 2 -reduction yield and selectivity is critical. In this study, new photocatalysts (U-B-M, M = Co, Ni) were synthesized by incorporating 1,2-benzisothiazolin-3-one (BIT) into NH 2 -UiO-66, to create N, N’-chelating sites via an amine–aldehyde condensation reaction, followed by metal-ion chelation. The introduction of BIT decreased the resistance of the catalyst and enhanced the separation of photogenerated carriers. The catalytic performance of U-B-Ni (rate: 3.10 mmol·g −1 ·h −1 ; selectivity: 97 %) surpasses those most of all previously reported MOF-based photocatalysts. Moreover, U-B-Ni shows high stability and negligible deactivation on catalytic cycling for over 16 h. This study expands the utility of metal–organic frameworks (MOF) in photocatalysis and highlights the importance of amine–aldehyde condensation in MOF modification.
研究领域:
材料科学
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环境科学
·
化学工程
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产品关联
DOI
高影响因子
ANALYST
·
2015
·Vol. 140
·期 6
·1913-1920
·
IF 4.107
Cong Li,Jingyu Zhao,Xiaoyi Yan,Yue Gu,Weilu Liu,Liu Tang,Bo Zheng,Yaru Li,Ruixue Chen,Zhiquan Zhang
Electrochemical detection of dopamine (DA) plays an important role in medical diagnosis. In this paper, tremella-like graphene–Au (t-GN–Au) composites were synthesized by a one-step hydrothermal method for selective detection of DA. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Raman spectroscopy, and Fourier transform infrared (FTIR) spectroscopy were used to characterize as-prepared t-GN–Au composites. The t-GN–Au composites were directly used for the determination of DA via cyclic voltammetry (CV) and the chronoamperometry (CA) technique. CA measurement gave a wide linear range from 0.8 to 2000 μM, and the detection limit of 57 nM (S/N = 3) for DA. The mechanism and the heterogeneous electron transfer kinetics of the DA oxidation were discussed in the light of rotating disk electrode (RDE) experiments. Moreover, the modified electrode was applied to the determination of DA in human urine and serum samples.
研究领域:
医学诊断
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材料科学
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电化学
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DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2020
·
IF 7.183
Yunlong Qi,Tiezheng Tong,Song Zhao,Wen Zhang,Zhi Wang,Jixiao Wang
Mineral scaling and organic fouling are challenging and co-existing issues that compromise membrane performance in reverse osmosis (RO), but membrane materials possessing both scaling and fouling resistance have not been achieved so far. In this study, thin-film composite (TFC) polyamide membranes were modified with multilayered Ferric-phytic acid (PhA) complexes using layer-by-layer (LbL) assembly, which achieves simultaneous resistance against both silica scaling and BSA fouling. The Ferric-PhA complexes enhanced both hydrophilicity and negative charge, while decreasing the surface roughness of the TFC membrane . The Ferric-PhA assembled membranes exhibited excellent resistance against both individual silica scaling and bovine serum albumin (BSA) fouling in RO desalination, with an increase of layer number resulting in improved membrane performance. The Ferric-PhA assembled membranes further showed remarkably less flux decline compared to the pristine TFC membrane when silica scaling and BSA fouling co-existed. The favorable membrane surface properties imparted by Ferric-PhA complexes reduced the membrane interactions with both silica scalants and BSA foulants effectively, resulting in the exceptional and simultaneous scaling and fouling resistance. Our work demonstrates that it is feasible to achieve dual functions of scaling and fouling resistance of RO membranes by smart surface modification.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2014
·
IF 2.083
Zhenyu Bao,Weijiang Zhang,Yinglai Chen,Jiao Xu,Xianbao Cui
The densities and viscosities of BF 3 ·anisole and BF 3 ·phenetole complex were determined at T = (283.15 to 303.15)K under atmospheric pressure. The molar ratios of the complexes ranged from 0.0080 to 0.9588 for BF 3 ·anisole and 0.0090 to 0.9850 for BF 3 ·phenetole. The measured densities and viscosities of both complexes were well correlated by modified Guimarães' equation and extended Jones–Dole equation, respectively. The apparent molar volumes were calculated using densities, and the limiting partial molar volumes were obtained by regression analysis. Arrhenius-type equation was adopted to get viscous flow activation energy through data fitting of viscosity values.
研究领域:
物理化学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yushi Wang,Mengjiao Xing,Lijia Duan,Aya Fatihi,Miao Ji,Danli Wang,Ling Li,Gongshuai Song,Tinglan Yuan,Jinyan Gong
In this study, complexes of chlorogenic acid (CA) with starch from different sources were prepared by thermal treatment (70 °C, 20 min) and ultrasound (450 W, 20 kHz, 25 °C, 20 min). Both ultrasound and thermal treatment are effective methods for preparing starch-CA complexes, but the two treatments have different effects on different starches. Characterization of the complexes prepared using the two methods showed that thermal treatment and ultrasound reduced the crystallinity of starch to some extent, with thermal treatment having a greater effect. Thermal treatment also reduced the amount of double-helix structures in starch. In contrast, ultrasound was relatively mild and had less effect on starch granular structure. However, these two methods promoted the binding of CA, thereby increasing the crystallinity of starch and forming a more ordered and compact structure, which, to some extent hindered the enzymatic degradation of starch. Moreover, the RDS of starch-CA complexes were reduced to different degrees, with the most significant changes in U (PS-CA) and T (CS-CA), which were reduced by 5.96 % and 4.55 %, respectively.
研究领域:
食品科学
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生物化学
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产品关联
DOI
PubMed
高影响因子
Antioxidants
·
2024
·Vol. 13
·期 2
·167
·
IF 6
Wanqin Zhang,Jiaman Liu,Tao Zhang,Bo Teng
This study aims to enhance gelatin film performance in the food industry by incorporating polyphenol–titanium complexes (PTCs) as crosslinkers. PTCs introduce multiple linkages with gelatin, including coordination and hydrogen bonds, resulting in synergistic crosslinking effects. This leads to an increased hydrodynamic volume, particle size, and thermal stability of the gelatin films. Compared to films crosslinked solely by polyphenols or titanium, PTC-crosslinked gelatin films exhibit significant improvements. They show enhanced mechanical properties with a tensile strength that is 1.7 to 2.6 times higher than neat gelatin films. Moreover, these films effectively shield UV light (from 82% to 99%), providing better protection for light-sensitive food ingredients and preserving lutein content (from 74.2% to 78.1%) under light exposure. The incorporation of PTCs also improves film hydrophobicity, as indicated by water contact angles ranging from 115.3° to 131.9° and a water solubility ranging from 31.5% to 33.6%. Additionally, PTC-enhanced films demonstrate a superior antioxidant ability, with a prolonged polyphenol release (up to 18 days in immersed water) and a higher free radical scavenging ability (from 22% to 25.2%). Overall, the improved characteristics of gelatin films enabled by PTCs enhance their performance, making them suitable for various food packaging applications.Keywords:gelatin film;polyphenol–titanium complexes;synergistic effect
研究领域:
食品科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2012
·
IF 2.159
Yan-Jing Gu,Bing Yan,Xiao-Fei Qiao
Novel rare earth complex-functionalized mesoporous SBA-16-type hybrid materials are synthesized by the co-condensation of modified 2-methyl-9-hydroxyphenalenone (MHPOSi), from modified 3-(triethoxysilyl)-propyl isocyanate (TEPIC), and tetraethoxysilane (TEOS) in the presence of Pluronic F127 as a template. These inorganic–organic mesoporous hybrids are characterized by FT-IR spectra, small-angle X-ray diffraction (SAXRD), N 2 adsorption–desorption measurements, thermal analysis and spectroscopy. Their photophysical properties, which show novel light conversion properties, are discussed in detail. The Eu 3+ hybrid system shows ultraviolet excitation and visible emission, and the Nd + and Yb 3+ hybrids exhibit visible excitation and NIR emission.
研究领域:
材料科学
·
光学
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产品关联
DOI
高影响因子
EMBO JOURNAL
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2017
·Vol. 36
·期 6
·816-829
·
IF 9.792
Shen Wang,Ucheor B Choi,Jihong Gong,Xiaoyu Yang,Yun Li,Austin L Wang,Xiaofei Yang,Axel T Brunger,Cong Ma
The soluble N-ethylmaleimide-sensitive factor attachment protein receptor (SNARE) protein syntaxin-1 adopts a closed conformation when bound to Munc18-1, preventing binding to synaptobrevin-2 and SNAP-25 to form the ternary SNARE complex. Although it is known that the MUN domain of Munc13-1 catalyzes the transition from the Munc18-1/syntaxin-1 complex to the SNARE complex, the molecular mechanism is unclear. Here, we identified two conserved residues (R151, I155) in the syntaxin-1 linker region as key sites for the MUN domain interaction. This interaction is essential for SNARE complex formation in vitro and synaptic vesicle priming in neuronal cultures. Moreover, this interaction is important for a tripartite Munc18-1/syntaxin-1/MUN complex, in which syntaxin-1 still adopts a closed conformation tightly bound to Munc18-1, whereas the syntaxin-1 linker region changes its conformation, similar to that of the LE mutant of syntaxin-1 when bound to Munc18-1. We suggest that the conformational change of the syntaxin-1 linker region induced by Munc13-1 initiates ternary SNARE complex formation in the neuronal system.
研究领域:
神经生物学
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细胞生物学
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分子生物学
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产品关联
DOI
PubMed
高影响因子
Food Bioscience
·
2025
·
IF 5.9
Yu Li,Jiaxuan Li,Wentao Su,A.M. Abd El-Aty,Yukun Song,Mingqian Tan
Microbial contamination significantly accelerates food spoilage and poses serious risks to public health, thereby necessitating the urgent development of eco-friendly antimicrobial materials to ensure food safety and mitigate health hazards. In this study, a curcumin-zinc complex (Cur-Zn) was synthesized through a hydrothermal method under alkaline conditions, resulting in a metal-polyphenol composite targeted for antibacterial applications. The optimized Cur-Zn (at pH 8, 80 °C) exhibited a spherical nanostructure (30-40 nm) with a substantial Zn 2+ content of 13.56% (m/m) and exceptional aqueous dispersibility. Cur-Zn demonstrated the pH-responsive release kinetics of curcumin, adhering to a first-order model in acidic environments, and exhibited superior antioxidant capacity compared with that of the physically mixed components. Notably, Cur-Zn effectively inhibited the growth of E. coli and S. aureus by disrupting bacterial membranes while concurrently reducing intracellular reactive oxygen species (ROS) levels under oxidative stress at safe dosages. This investigation underscores the dual antioxidative and antibacterial functions of Cur-Zn and its pH-triggered release mechanisms, thereby presenting a green strategy for the design of metal-phenolic antimicrobial agents.
研究领域:
纳米医学
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食品科学
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生物材料
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药剂学
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微生物学
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分子生物学
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环境友好材料
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Liyuan Yin,Zhenjia Zheng,Qiannan Liu,Wei Liu,Ruixuan Zhao,Honghai Hu
The purpose of this study was to investigate the effect of starch gelatinization degree on the complexation mode and complexation strength of polyphenols (chlorogenic acid), as well as the changes in the physicochemical properties of potato starch with varying degrees of gelatinization before and after the addition of chlorogenic acid. The result show that the degree of gelatinization of potato starch increased from 0 % to 100 %, while the recombination rate of chlorogenic acid increased from 21.92 ± 0.67 % to 40.93 ± 0.15 %. An increase in gelatinization degree enhances the interaction between chlorogenic acid and potato starch, resulting in the formation of V-type complexes. The setback value of potato starch with 100 % pasting degree decreased from 27.74 ± 3.65 (×10 2 mPa s) to 24.78 ± 0.73 (×10 2 mPa s) after chlorogenic acid was added. The results showed that chlorogenic acid delayed the retrogradation of potato starch. The addition of chlorogenic acid enhanced the thermal stability of potato starch. The markedly bound water content (A 21 ) of potato starch-chlorogenic acid complex gels increased from 0.96 ± 0.10 % to 2.24 % ± 0.14 % as the degree of gelatinization from 0 % to 100 %, indicative of an enhanced water-holding capacity of potato starch gels by chlorogenic acid. These findings provide a theoretical foundation for expanding the use of potato starch in the food industry and improving the quality of starch-based foods.
研究领域:
食品科学
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生物化学
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产品关联
DOI
PubMed
高影响因子
IMMUNITY
·
2025
·
IF 26.3
Yuwei Zhu,Wenbo Gao,Jianlin Zheng,Ye Bai,Xinyu Tian,Tengjin Huang,Zebin Lu,De Dong,Anqi Zhang,Changyou Guo,Zhiwei Huang
Phosphoantigens (pAgs), produced by infected or cancer cells, trigger the assembly of a membrane receptor complex comprising butyrophilin (BTN) members BTN3A1 and BTN2A1, leading to the activation of γδ T cells. BTN3A2 or BTN3A3 forms heteromers with BTN3A1, exhibiting higher γδ T cell receptor (TCR)-stimulating activity than BTN3A1 homomers. Cryoelectron microscopy (cryo-EM) structure reveals a pAg-induced BTN2A1-BTN3A1 heterotetramer with a 2:2 stoichiometry, stabilized by interactions between the intracellular B30.2 domains and the extracellular immunoglobulin V (IgV) domains. BTN3A2 or BTN3A3 heterodimerizes with BTN3A1, forming a pAg-induced tetrameric complex with BTN2A1. However, BTN3A1 heterodimers are more stable than BTN3A1 homodimers in this interaction. Cryo-EM reveals that BTN2A1-BTN3A1-BTN3A2 binds two γδ TCR ectodomains, with one being sandwiched between the IgV domains of BTN2A1 and BTN3A2, while the other interacts with the free BTN2A1 IgV in the complex, as evidenced by functional data. Together, our findings uncover the mechanism of ligand-induced inside-out stabilization of BTN receptor complexes for dimeric activation of γδ TCR.
研究领域:
免疫学
·
结构生物学
·
细胞生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2024
·
IF 8.3
Guanhua Wang,Huibin Zhang,Weilun Qian,Anyang Tang,Huazhen Cao,Wenyu Feng,Guoqu Zheng
In this study, a spherogranular porous composite tin pyrophosphate antimonate (SSbPP) adsorbent was developed for the efficient extraction of rubidium (Rb) and cesium (Cs) resources. This granular composite adsorbent was prepared using the anti-solvent method with polyvinyl chloride (PVC) as carrier and the incorporated SSbPP powder as adsorbent. The composition , molecular structure, and adsorption performance of SSbPP, along with the microstructure and adsorption behavior of the granulated PVC-SSbPP adsorbent, were comprehensively investigated. The results showed that the SSbPP adsorbent with superior performance was synthesized at a Sn:Sb:P molar ratio of 0.5:0.25:2. The adsorption behavior of PVC-SSbPP was evaluated using the pseudo-second-order kinetic model and Langmuir isotherm. The maximal adsorption capacities of PVC-SSbPP for Rb + and Cs + were found to be 81.3 mg g −1 and 95.23 mg g −1 at optimal condition, respectively. The PVC-SSbPP also exhibited high adsorption selectivity for Rb + /Cs + in the presence of competitive metal ions such as K + , Na + , Li + , Mg 2+ and Ca 2+ . Furthermore, through dynamic adsorption-desorption experiment using a fixed-bed column, a low-concentration Rb + /Cs + solution (10 mg L −1 ) could be concentrated by approximately 140 times. This research offers a promising approach for the selective extraction of low-concentration Rb and Cs resources from highly saline solutions.
研究领域:
化学工程
·
环境科学
✓ 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）