PROCESS BIOCHEMISTRY
·
2022
·
IF 4.885
Jinmao Ma,Dongrun Wang,Wei Zhang,Xiangyu Wang,Xia Ma,Minsheng Liu,Quanlin Zhao,Lincheng Zhou,Sanxiang Sun,Zhengfang Ye
The host–guest β-cyclodextrin has attracted much attention for potential application in various fields due to its low price, natural pores, and functionality. Herein, we report a method using 1,4-phenylene diisocyanate (PPDI) to fabricate β-cyclodextrin (CD)-modified poly(chloromethyl styrene) (PCMS) resin, namely, PCMS@PPDI-CD. β-Cyclodextrin was utilized to improve the adsorption performance of PCMS, which was then applied to anchor β-cyclodextrin powder. The product exhibits excellent renewability and availability due to the application of PCMS. The adsorption performance was fully exerted by the combination of β-cyclodextrin and PCMS. SEM mapping, FTIR, TG , BET, and XPS analyses were conducted to explore the morphological and structural properties of PCMS@PPDI-CD. Adsorption experiments show that PCMS@PPDI-CD removed 100 % of TC and 75 % of Cu(Ⅱ), and the maximum adsorption capacity for Cu(Ⅱ) and TC reached 187.6 and 266.4 mg g −1 , respectively. After recycling six times, the adsorption ability of Cu(Ⅱ) and TC still achieved excellent removal performance. In addition, the chelation of the lone N pair, the hydrophobicity of the cavity, H-bonding, complexation, n-π interaction, and porous structure showed the possible mechanism. We used computational formulas to simulate the adsorption state and found that the resin is theoretically feasible. Most importantly, we propose a novel application of PCMS@PPDI-CD. This work shows that the resulting PCMS@PPDI-CD is highly efficient and can be easily recycled, making it an attractive resin for adsorption.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 15
·11562-11572
·
IF 4.6
Shuai Li,Haopeng Cai,Haichao Liu,Zhuang Xu,Wenjing Lou
Lubricating additives are essential for enhancing the tribological properties of grease. The development of low-cost lubricant additives with excellent biodegradability is expected to be the prevailing trend for future advancements. In this study, biodegradable ultrafine β-tricalcium phosphate (β-TCP) was utilized to enhance the friction reduction, anti-wear and extreme pressure properties of barium complex greases at high temperatures. At 150 °C and a load of 150 N, compared to the base grease, the average friction coefficient (AFC) of barium complex grease with 4.5% β-TCP was reduced by 21.82%. Meanwhile, the wear volume was reduced by 88.43%. Moreover, the extreme pressure properties of the barium complex grease were increased by 3.75 times. The lubrication mechanism of β-TCP is the formation of a protective film of P and Ca compounds on the surface of the friction partner.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Zhe Zong,Wei Zhao,Siyi Li,Na Liang,Shaoping Sun
A novel polymer Bio-CD-SS-TPE is designed and synthesized by modifying hydroxypropyl-β-cyclodextrin with the aggregation-induced emission (AIE) featured tetraphenylethylene derivative, disulfide bond, and biotin. The polymer can self-assemble into micelles in an aqueous phase and encapsulate paclitaxel (PTX) in the hydrophobic core. As expected, the Bio-CD-SS-TPE micelles exhibit excellent AIE performance and cell imaging capability. With the effect of disulfide bonds, the PTX-loaded micelles quickly release the drug upon the trigger of glutathione. In vivo study indicates the superior tumor inhibition effect and lower systemic toxicity of the PTX-loaded micelles. The Bio-CD-SS-TPE micellar system holds great potential in cancer treatment and bioimaging.
研究领域:
生物材料学
·
癌症治疗
·
药物递送系统
✓ 已验证
产品关联
DOI
高影响因子
CyTA-Journal of Food
·
2018
·
IF 1.371
Shuang Ma,Xu Yang,Cuina Wang,Mingruo Guo
Effect of ultrasound treatment on antioxidant activity and structure of β-Lactoglobulin were investigated using antioxidant indexes and spectroscopy techniques. The 1,1-Diphenyl-2-picrylhydrazyl (DPPH) radical scavenging activities had been applied to the experimental response obtained by a three-factor-three-level Box–Behnken design. Results showed that ultrasound treatment significantly increased antioxidant activity (p < 0.05). The maximum DPPH radical scavenging activity of β-Lactoglobulin was 57.59% at the ultrasound conditions of 45°C, 20 min and amplitude of 30%. The ultrasound-treated β-Lactoglobulin exhibited higher 2,2ʹ-Azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt radical scavenging activity and oxygen radical absorbance capacity. Circular dichroism data indicated that ultrasound treatment increased both α-helix and β-sheet contents of β-Lactoglobulin and altered Trp residues, which resulted in the secondary and tertiary structure changes. Differential scanning calorimeter and scanning electron microscopy micrographs showed that ultrasound-treated β-Lactoglobulin contained larger aggregates than untreated. In conclusion, ultrasound treatment had considerable effects on antioxidant activity and structure of β-Lactoglobulin. Ultrasound treatment may expand the applications of β-Lactoglobulin in food industries.
研究领域:
食品科学
·
生物化学
·
分子生物学
✓ 已验证
DOI
高影响因子
LUMINESCENCE
·
2019
·Vol. 35
·期 2
·222-230
·
IF 1.691
Bo Kong,Tong Yang,Peng Hou,Chun Hong Li,Hong Yan Zou,Cheng Zhi Huang
Energy transfer engineering based on fluorescent probes for directly sensing enzyme activities are in great demand as enzyme-mediated transformations, which are central to all biological processes. Here, a fluorescence carbon dot (CD)-based assay exhibiting selective responses to the quantitation of β-glucosidase and the effect of its inhibitor was developed. The most common substrate, para-nitrophenyl-β- d -glucopyranoside (pNPG) was hydrolyzed by β-glucosidase to release p -nitrophenol (pNP), which can efficiently quench fluorescence of CDs via an inner filter effect and electron transfer. However, in the presence of inhibitors of β-glucosidase, the fluorescence intensity gradually recovered as the concentration of inhibitors increased. Therefore, the enzyme-triggered fluorescence turn-off/turn-on of specific CDs successfully achieved sensitive detection of β-glucosidase and monitored the effect of its inhibitors. This new strategy was applied to detect β-glucosidase and monitor β-glucosidase inhibitor in hepatoma cells using cell imaging. All results suggest that the new method is sensitive and promising for use in cancer diagnosis and treatment.
研究领域:
生物化学
·
医学诊断
✓ 已验证
DOI
高影响因子
Molecular Catalysis
·
2024
·
IF 3.9
Qinglei Wu,Chenyang Shen,Chang-jun Liu
Molybdenum carbide is a promising support to tune the metal reactivity, which originates from the interaction between metal and support. In this work, Pd/β-Mo 2 C was prepared using a deposition-precipitation method for selective hydrogenation of acetylene. The high temperature calcination is employed to modulate the interaction between Pd and β-Mo 2 C. The Pd/β-Mo 2 C catalyst calcined at 600 °C exhibits significant promotion in selective hydrogenation, which shows 100 % acetylene conversion and 81.4 % ethylene selectivity at 160 °C. The activity promotion originates from the enhanced electronic metal-support interaction, which induces a shift of Pd 3d to higher binding energy. Besides, the Pd species become atomically dispersed after calcination. The changes in geometric and electronic structure suppress the formation of Pd hydrides, which consequently inhibits the excessive hydrogenation capacity of Pd. The structure variation also affects the adsorption of ethylene. No strong adsorbed ethylene (di-σ bonded ethylene) can be identified, which is conducive to the improvement of ethylene selectivity. Density functional theoretical (DFT) calculations confirm that Pd on β-Mo 2 C is positively charged. The desorption energy of C 2 H 4 * (0.78 eV) is significantly lower than that of further hydrogenation (1.45 eV), which explains the improved ethylene selectivity of the calcinated catalyst. The present study indicates calcination is an effective method to tune the activity of Pd/β-Mo 2 C for reactions beyond selective hydrogenation of acetylene.
研究领域:
催化
·
化学工程
·
材料科学
·
理论化学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2022
·Vol. 23
·期 18
·10753
·
IF 6.208
Zhimin Liu,Qingqing Zhou,Dan Wang,Yunli Duan,Xuehua Zhang,Yi Yang,Zhigang Xu
A novel high-throughput array analytical platform based on derived β-cyclodextrin supramolecular imprinted polymer (SMIP) fibers was constructed to achieve selective enrichment and removal of parabens. SMIP fiber arrays have abundant imprinting sites and introduce the host–guest inclusion effect of the derived β-cyclodextrin, which is beneficial to significantly improve the adsorption ability of fiber for parabens. Upon combination with HPLC, a specific and sensitive recognition method was developed with a low limit of detection (0.003–0.02 µg/L, S/N = 3) for parabens analysis in environmental water. This method has a good linearity (R > 0.9994) in the linear range of 0.01–200 µg/L. The proposed SMIP fiber array with high-throughput adsorption capacity has great potential in monitoring water pollution, which also provides a reliable reference for the analysis of more categories of pharmaceutical and personal care product pollutants.
研究领域:
分析化学
·
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
WOOD SCIENCE AND TECHNOLOGY
·
2016
·Vol. 50
·期 6
·1243-1260
·
IF 1.642
Sun Nan,Wang Ting,Liu Chang
A new wood-flour-based photocatalytic composite of wood flour/ β -cyclodextrin/titanium dioxide (WF/ β -CD/TiO 2 ) was synthesized via the photoinduced assembly method. For evaluation of the photocatalytic efficiency of methyl orange (MO) by WF/ β -CD/TiO 2 , three materials of TiO 2 , β -CD/TiO 2 and WF/TiO 2 were prepared and assessed under the same photocatalytic conditions. The morphology of these composites was characterized by scanning electron microscope (SEM) and transmission electron microscope (TEM), respectively. The chemical composition was detected by X-ray photoelectron spectroscopy (XPS). By means of phenolphthalein probe technique and back titration method, the contents of active β -CD (3.5 %) and TiO 2 (0.0581 g/0.1 g) in the prepared WF/ β -CD/TiO 2 composite were obtained. In the experiments of photocatalytic reaction, for completely degradation of 0.1 mmol L −1 MO, the degradation time of WF/ β -CD/TiO 2 was similar to that of β -CD/TiO 2 but shorter than those degraded by pure TiO 2 and WF/TiO 2 . The kinetics of photocatalytic degradation of MO by WF/ β -CD/TiO 2 was also investigated. The intraparticle diffusion kinetic model gave a better correlation for the photocatalytic reaction. In addition, after recycling for five times, the degradation efficiency of MO by WF/ β -CD/TiO 2 was still above 86 %, which was obviously higher than that by WF/TiO 2 , indicating a good regeneration property.
研究领域:
材料科学
·
环境化学
·
纳米催化
·
高分子复合材料
·
光化学
✓ 已验证
DOI
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2022
·Vol. 33
·期 12
·4120-4130
·
IF 3.348
Xue Meng,Da Zhang,Meng Wang,Ronghui Zhao,Pengfei Zhang,Jingyuan Zhao,Kuilin Deng
For the nontraditional aggregation-induced emission (AIE) active polymers, the heterocyclic structure on the macromolecular backbone and side chains play a crucial role in its fluorescence generation. In this paper, we facilely prepared a series of poly(β-lactam) derivatives (PLTM) by Staudinger polymerization. As expected, PLTMs with four-membered heterocycles along the main-chain shows a remarkable AIE performance with the fluorescence emission at 520 nm, while no fluorescence was observed for both β-lactam (repeating unit) and a model polymer for PLTM. The fluorescence properties of PLTMs greatly depend on the intramolecular aggregation of β-lactam structures, the size of the substituents, and appropriate length of CH 2 spacer. In addition, PLTMs can specifically detect Fe 3+ ions with a limit of detection (LOD) of 7.2 μM even in the presence of other 13 metal ions. Similar to the biological activity of β-lactam, AIE-active PLTMs shows a bactericidal effect on Staphylococcus aureus and Escherichia coli with the minimum inhibitory concentration of about 8 and 4 mg/mL. In brief, the preparation and versatility of PLTMs with β-lactam structure provide useful references for designing other nontraditional AIE-active polymers as well as for ion detection and antibacterial processes.
研究领域:
高分子化学
·
分析化学
·
生物化学
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2020
·
IF 7.182
Zhen Wu,Chenyang Zhao,Yongxia Huang,Fayin Ye,Guohua Zhao
Environmental temperature and pH induced significant changes in the size and surface charge ( ζ ) of octenylsuccinated oat β -glucan aggregates. The underlying mechanisms were explored by using 1 H-NMR, fluorescence spectra, thermodynamic analysis, and SAXS. At pH 6.5, the size decreased with temperature while ζ continuously increased. With increasing pH at 293 K, parabolic and U-shaped trends were observed in the size and ζ , peaking at pH 8.5 and 6.5, respectively. At any tested pH, the size decreased with temperature. Overall, ζ significantly increased with temperature at each pH. As temperature increased, the compactness of hydrophobic-domains increased while the compactness of hydrophilic-domains decreased. In an acidic environment, both the compactness increased with decreasing pH, but in an alkaline environment, they decreased with pH. The compactness changes were co-driven by enthalpy and entropy and corresponded to changes in the hydrophobic interactions in hydrophobic-domains, hydrogen bonds in hydrophilic-domains and electrostatic repulsions among octenylsuccinate molecules.
研究领域:
食品科学
·
分子生物学
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2017
·
IF 4.811
Guangyang Liu,Lingyun Li,Donghui Xu,Xiaodong Huang,Xiaomin Xu,Shuning Zheng,Yanguo Zhang,Huan Lin
A novel magnetic copper-based metal–organic framework (M-MOF) was prepared using a Fe 4 O 3 –graphene oxide (GO)–β-cyclodextrin (β-CD) nanocomposite as the magnetic core and support, and used for adsorption and removal of neonicotinoid insecticide pollutants from aqueous solution. M-MOF characterization suggested that 1 Fe 4 O 3 –GO–β-CD consisted of a thin single layer with anchored Fe 3 O 4 . The M-MOF was coated on the Fe 4 O 3 –GO–β-CD surface. The M-MOF had a large Brunauer–Emmett–Teller surface area (250.33 m 2 g −1) and high super-paramagnetism with saturation magnetization of 10.47 emu g −1 . Adsorption model analysis showed that the equilibrium data for thiacloprid fitted Langmuir monolayer adsorption and the other insecticides tested showed Freundlich bimolecular layer adsorption. The results show that M-MOF is a promising hybrid adsorbent for rapid removal of neonicotinoid insecticide pollutants from environmental waters.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Wei Wang,Hong-ze Gang,Homely Isaya Mtui,Shi-Zhong Yang,Bo-Zhong Mu
The hydrophilic head structure can significantly influence the interfacial performance of biobased zwitterionic surfactants. Among various hydrophilic groups, the hydroxyl group plays a considerable role in the influence on interfacial activity. However, the relevant mechanism remains to be elucidated. To study this point, in this work two new biobased zwitterionic surfactants, anisole-based oleamide ethyl hydroxypropyl sulfonyl quaternary ammonium salt (AEHSQA) and anisole-based oleamide ethyl sulfonylpropyl quaternary ammonium salt (AESPQA), were synthesized from biomass material methyl oleate, and the interfacial performances of the two surfactants were evaluated. It showed that AEHSQA can lower the interfacial tensions between crude oil and groundwater to the ultralow level (<10–2 mN/m) at a temperature of up to 120 °C and a concentration of Ca2+ of up to 2500 mg/L with one more β-hydroxyl group, while the corresponding tolerances of AESPQA are only 90 °C and 250 mg/L. Molecular dynamics simulation (MDS) was employed to study the interfacial behaviors of surfactant molecules at the oil–water interface under conditions of different temperatures and salinities. The results of MDS implied that introducing a hydroxyl group could improve the thermal resistance and salt tolerance of zwitterionic surfactants via resisting the hydrophilicity decline and interfacial looseness of surfactant molecules resulting from the increases in temperature and salinity.
研究领域:
化学工程
·
界面科学
·
生物材料
✓ 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）