RSC Advances
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2019
·Vol. 9
·期 8
·4635-4643
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IF 3.049
Xiufang He,Zhansheng Wu,Yongtao Xue,Zhenzhen Gao,Xia Yang
Graphitic carbon nitride (g-C3N4) has been considered to be a promising metal-free photocatalyst, although the high recombination rate of charge carriers and poor absorption of visible light have limited its applications. In order to overcome these problems, an interlayer composite photocatalyst that comprised β-cyclodextrin (β-CD), oxygen-doped C3N4 (O-C3N4) and molybdenum disulfide (MoS2) was successfully constructed for the highly enhanced photodegradation of glyphosate in this study. The structure and morphology, optical properties, and photoelectrochemical properties of the prepared photocatalyst were characterized via a series of characterization techniques. The average fluorescence lifetime of the composite photocatalyst was extended from 6.67 ns to 7.30 ns in comparison with that of g-C3N4, which indicated that the composite photocatalyst enhanced the absorption of visible light and also inhibited the recombination of electron–hole pairs. The mass ratio of MoS2 that corresponded to O-C3N4/MoS2-5 enabled the highest removal rate under simulated sunlight irradiation, which was almost twice that achieved using pure g-C3N4. Relative species scavenging experiments revealed that ·O2− was the main species during the process of photodegradation. Besides, a toxicity test indicated that glyphosate became less toxic or non-toxic after photodegradation. This study provided an effective, feasible and stable photocatalyst driven by simulated sunlight irradiation for the highly enhanced photodegradation of glyphosate.
研究领域:
环境科学
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材料科学
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PubMed
高影响因子
RSC Advances
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2015
·Vol. 5
·期 130
·107670-107679
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IF 3.84
Shoulian Wei,Jianwen Li,Yong Liu
Magnetic mesoporous nanoparticles of Fe3O4@mSiO2 were prepared through co-precipitation and tetraethoxysilane hydrolysis at 60 °C and pH 10 with hexadecyl trimethyl ammonium bromide as the template. Hydroxypropyl β-cyclodextrin was modified onto Fe3O4@mSiO2 under sodium citrate and N2 protection via an ultrasound process to increase the catalytic efficiency. The prepared nanoparticles were characterized by Fourier transform infrared spectrometry, X-ray diffraction, scanning electron microscopy and a peroxidase-like activity assay. The results showed that the prepared nanoparticles have magnetic properties, peroxidase-like activity and a loose spherical cluster structure. Compared with Fe3O4@mSiO2 nanoparticles, Fe3O4@mSiO2@HP-β-CD nanoparticles exhibit higher catalytic ability toward both H2O2 and 3,3′,5,5′-tetramethylbenzidine. Fe3O4@mSiO2@HP-β-CD nanoparticles can catalyse β-estradiol (β-E2) oxidation in the presence of H2O2 and be used as a colourimetric sensor for indirect detection of β-E2. A good linear relationship was obtained from 0.8 μM to 16 μM. The limit of detection of the proposed method was 0.2 μM. The visual method was successfully used in the analysis of β-E2 in commercial tablets and animal feeds, with recovery ranging from 92.6% to 110%.
研究领域:
生物化学
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分析化学
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材料科学
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高影响因子
TALANTA
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2022
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IF 6.556
Xiaoqing Cui,Yu Bao,Tingting Han,Zhenbang Liu,Yingming Ma,Zhonghui Sun
Here, we developed a wearable electrochemical sensor for pH and K + monitoring in sweat. The sensor was composed of flexible reference electrode, pH response electrode and K + selective electrode, which were prepared through printing β-CD functionalized graphene (β-CD/RGO) water suspension on conductive PET substrate with microelectronic printer. β-CD/RGO not only served as the pH sensitive material for pH response electrode with good sensitivity, selectivity and reproducibility due to its abundant oxygen-containing functional groups, but also worked as the ion-to-electron transducer for K + selective electrode with good sensitivity. The wearable sensor exhibited good potential stability at different bending states. On-body sweat pH and K + measurements showed high accuracy compared with ex-situ analysis.
研究领域:
生物医学工程
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材料科学
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传感技术
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PubMed
高影响因子
FOOD CHEMISTRY
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2023
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IF 8.8
Jiaxuan Li,Yu Li,Wentao Su,Xuedi Zhang,Duo Liang,Mingqian Tan
Fucoxanthin (Fx) has poor water solubility and bioavailability, which limits its application in the food industry. To improve the physicochemical properties of Fx, hydroxypropyl-β-cyclodextrin (HP-β-CD) encapsulated Fx nanofibers (Fx/HP-β-CD nanofibers) were fabricated via electrospinning without using polymer. Molecular docking analysis showed the Fx/HP-β-CD nanofibers contained Fx and HP-β-CD at 1:2. Morphological analysis revealed the nanofibers were homogeneous without beads, having a diameter around 499 nm. The thermostability of Fx was significantly improved after encapsulationg by HP-β-CD. Animal studies showed that there was a 14% decrease of body weight, 11% white adipose tissue reduction and 9% lower of liver triglyceride for the mice treated with Fx/HP-β-CD nanofibers as compared with that of Fx treated mice. The total cholesterol was reduced by 23% in mice serum after treatment with Fx/HP-β-CD as compared with that of Fx. Interestingly, the Fx/HP-β-CD in this study could attenuate the testicular histopathology in obese mice.
研究领域:
食品科学
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营养学
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药理学
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肥胖研究
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2023
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IF 8.4
Niu Wu,Di Wu,Yueyi Shen,Li-e Liu,Lihua Ding,Yongjun Wu,Ningge Jian
Thiophenols are widely used in chemical and pharmaceutical industries , but the acute toxicity and irritating effects of these chemicals pose a threat to public health. A nanofibrous membrane-based fluorescent and colorimetric sensor was synthesized for the convenient and portable detection of thiophenols relying on the nucleophilic substitution reaction of chlorinated dipyrrole fluoride (BODIPY). To improve the sensing efficiency, β-CD was introduced as an addictive to regulate the molecular structure and physicochemical properties of the substrate membrane. The result showed that β-CD with appropriate cavity had good capability for complexing with the probe BODIPY, which successfully reduced the leakage of BODIPY during used. Also, thiophenol could be enriched by β-CD, and enhanced ratiometric fluorescence responses were achieved. The improved hydrophilicity facilitated the full contact of the NFM with thiophenol, contributing to a fast and efficient sensing process.The sensor system achieves a much shorter response time (180 s) and an extremely lower detection limit (0.11 nM). Furthermore, the sensor's fluorescent color changes can be identified by naked eye, showing great promise for the real-time on-site monitoring of thiophenols in both water and gas phases. Possible sensing mechanisms were investigated through theoretical calculation. Practical feasibility was validated through the actual sample analysis.
研究领域:
化学传感
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环境科学
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材料科学
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SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Yan Huang,Qiang Zuo,Mengyang Yin,Jingzhen Wang,Boqiang Gao,Jia Song,Xiaodang Tang,Yali Zhang,Shuanglong Ma,Dangling Hua,Rui Wang
The efficient removal of H 2 S is necessary for clean production and energy safety. However, industrial gases are usually accompanied by CO 2 significantly affecting desulfurization effects. Hence, novel imprinted adsorbents (PMo 12 @UiO-66@H 2 S-MIP-CDs) were synthesized through surface imprinting technology using cyclodextrins (CDs) as molecular scaffolds and UiO-66 modified by phosphomolybdic acid (PMo 12 @UiO-66) as a support. Wherein, PMo 12 @UiO-66@H 2 S-MIP-β-CD was determined as the optimal adsorbent since β-CD with low solubility is prone to keep its inherent cavity to promote dispersion of imprinted polymers and enrich internal pore channels. H 2 S capacity of PMo 12 @UiO-66@H 2 S-MIP-β-CD (31.67 mg/g) was about 2.4 and 1.7 times that of PMo 12 @UiO-66 and PMo 12 @UiO-66@H 2 S-MIPs, respectively, revealing the remarkable contribution of β-CD as a molecular scaffold to improve desulfurization. The results showed that PMo 12 @UiO-66@H 2 S-MIP-β-CD can maintain stable desulfurization efficiency regardless of the presence of CO 2 or moisture, and O 2 can strengthen the redox reaction between H 2 S and PMo 12 accompanied by the increased reduction degree of Mo 6+ in PMo 12 . After five adsorption-regeneration cycles, PMo 12 @UiO-66@H 2 S-MIP-β-CD still exhibited ideal removal efficiency. The excellent desulfurization performance is mainly ascribed to the selective adsorption role of H 2 S-MIP-β-CD and oxidative removal ability of PMo 12 . This work provides a valuable reference for the directional design of high-capacity functional adsorbents for room-temperature desulfurization.
研究领域:
环境科学
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材料科学
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化学工程
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Analytical Methods
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2021
·Vol. 13
·期 17
·2011-2020
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IF 2.896
Yi-Xin Sun,Dan-Dan Zhang,Yang Sheng,Defeng Xu,Rong Zhang,Mark Bradley
The β-CD@PEI-Fc chiral interface was prepared based on the supramolecular host–guest interaction between ferrocene (Fc) grafted polyethyleneimine (PEI-Fc) and chiral β-cyclodextrin (β-CD). SEM results show that β-CD@PEI-Fc interface has a regular spatial structure, which can effectively distinguish tryptophan (Trp) enantiomers. Under the optimal conditions, differential pulse voltammetry shows that the peak current ratio (ID/IL) of Trp enantiomers can reach 2.84 at 15 °C. More interestingly, the β-CD@PEI-Fc/GCE exhibited chiral recognition of D-Trp and L-Trp via water contact angle measurements. There was a good linear relationship between the peak current and the concentration of Trp enantiomers in the range from 0.005 mM to 0.10 mM. Finally, the chiral interface can be applied for quick detection of the proportion of isomers in Trp racemic solution, which is very important for chiral recognition in racemic mixture of chiral compounds. Meanwhile, the β-CD@PEI-Fc/GCE showed good stability and reproducibility.
研究领域:
分析化学
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电化学
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手性
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材料科学
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Weimin Wan,Ziqi Li,Xi Wang,Fei Tian,Jian Yang
Improving the biocompatibility and water dispersibility of hydroxyapatite (HAP) is an effective way to expand its application in biomedicine. Here, we present a nanosystem (HAP-β-CD-HPG) that is constructed by riboflavin sodium phosphate (HE) functionalized hydroxyapatite (HAP) and hyperbranched β-cyclodextrin (β-CD-HPG) through a simple, mild and rapid approach. Firstly, the successful construction of HAP-β-CD-HPG nanosystem is confirmed by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and so on. Next, Doxorubicin (DOX) is loaded onto HAP-β-CD-HPG with a high encapsulation potency (60.3%) and further use for the simultaneously cell-imaging and controlled release of the cytotoxic drug DOX. Furthermore, the pH-triggered DOX release process in A549 cancer cells can be visualized dynamically by tracking the fluorescence of HAP-β-CD-HPG and DOX. This work both provides a new protocol for the construction of dual-function nanosystem for imaging of cell cytoplasm and drug delivery via a simple approach and promotes a potential application of this diagnosis-therapy integrated system for cancer treatment in the future.
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Journal of Nanomaterials
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2021
·Vol. 2021
·期 1
·4145010
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IF 2.986
Jin Xu,Xuecheng Sun,Xiaodong Sun,Ye Lu
In this paper, a capillary coated with poly(glycidyl methacrylate) nanoparticles (PGMA NPs) was prepared and applied to construct a capillary electrophoresis (CE) enantioseparation system with glucosyl- β -cyclodextrin (Glu- β -CD) as a chiral selector. The PGMA NP coating can be easily introduced through a simple ring-opening reaction. Two basic drugs were used as models to evaluate the separation performance of the PGMA coating. Under the optimal conditions selected, the separation of the two enantiomers was obtained.
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高影响因子
JOURNAL OF POLYMER SCIENCE
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2026
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IF 3.9
Jiangtao Guo,Hongxiang Ou,Wenqian Zhou,Honglai Xue,Fang Zhu,Weikang Liu
In this work, a core–shell flame retardant (MF@β-CD) was prepared by coating β-cyclodextrin (β-CD) with melamine-formaldehyde (MF) resin through in situ polymerization. Amino-functionalized attapulgite (ATP-NH 2 ) was also prepared via silane modification. MF@β-CD and ATP-NH 2 were incorporated with piperazine pyrophosphate (PAPP) to fabricate flame-retardant PP composites through melt blending. The incorporation of MF@β-CD and ATP-NH 2 improved the fire performance and thermal stability of PP composites. The PP composite containing the MF@β-CD/ATP-NH 2 system exhibited a limiting oxygen index (LOI) of 33.8% and achieved a UL-94 V-0 rating. Compared with neat PP, the peak heat release rate and total smoke production decreased by 91.9% and 87.7%, respectively. Thermal analysis and char characterization suggested that the MF@β-CD/ATP-NH 2 system promoted the formation of a more continuous and stable char layer during combustion. The MF shell contributed to improved interfacial compatibility between β-CD and the PP matrix, while ATP-NH 2 helped maintain the integrity of the char structure. This work provides a feasible approach for improving the fire safety and condensed-phase stability of PP using bio-based flame-retardant components. Graphical Core–shell structured MF@β-CD was prepared via in situ polymerization and combined with amino-modified attapulgite (ATP-NH 2 ) and piperazine pyrophosphate (PAPP) to synergistically modify polypropylene (PP). The optimized composite achieved a limiting oxygen index (LOI) of 33.8% and a UL-94 V-0 rating. The incorporation of ATP-NH 2 resulted in a distinct lamellar stacking structure on the char residue surface, with the layered silicate sheets of ATP-NH 2 uniformly embedded in the organic char matrix. This enhanced the structural stability and thermal shock resistance of the char layer, preventing its cracking and peeling during high-temperature combustion.
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高影响因子
ANALYTICA CHIMICA ACTA
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2026
·
IF 6.1
Xiaoqian Yuan,Ziyi Cheng,Jiajia Fu,Wanting Duan,Yuchen Cui,Ruijun Tang,Xinru Wang,Youxin Li
Background Enantiomeric separation is essential in pharmaceutical analysis because enantiomers can differ markedly in pharmacological activity, metabolism, and safety. HPLC using chiral mobile-phase additives (CMPAs), particularly cyclodextrin-based selectors, provides a flexible and cost-effective alternative to dedicated chiral stationary phases. However, conventional cyclodextrin CMPA systems are often limited by insufficient stereodiscrimination under aqueous-organic mobile-phase conditions, where solvation and weak noncovalent interactions can restrict chiral recognition. This study explores the potential of deep eutectic solvents (DESs) as auxiliary mobile-phase modifiers for enhancing enantioseparation in β-cyclodextrin polymer-based HPLC chiral mobile phase analysis. Results Seven DESs with different hydrogen-bond donor/acceptor compositions and molar ratios were prepared and characterized by FT-IR, 1 H NMR, DSC, viscosity, and column-pressure measurements. The DESs were incorporated into HPLC-CMPA systems containing boric acid-modified β-cyclodextrin polymer (BA-β-CDP) and four other cyclodextrin derivatives as chiral selectors. The DES-assisted BA-β-CDP system improved the resolution of all ten chiral analytes. The resolutions of chlorpheniramine, propranolol, metoprolol, and bisoprolol increased by 17.16, 14.61, 12.63, and 8.86, respectively. Furthermore, danshensu, salbutamol, naringin and neohesperidin achieved complete separation with Rs of 2.60, 1.82, 1.52 and 2.52, respectively, which were slightly separated (Rs = 0.98 for danshensu and 0.40 for salbutamol) or remained unresolved in the absence of DES (Rs = 0 for naringin and neohesperidin). The system remained stable for at least 60 days, with RSD values below 1.30%. Significance and novelty In this paper, deep eutectic solvents (DESs) by modulating the hydrogen-bonding network and solvation microenvironment were introduced as auxiliary modifiers into the chiral mobile-phase additive (CMPA) mode of HPLC for the first time which could synergistically enhance chiral recognition. This strategy offers a green, versatile, and cost-effective solution for advancing chiral separation on conventional C18 columns in HPLC.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Yanying Rao,Binggui Wang,Hong Li,Xiaoying Ding,Kaiguo Liu,Xiaojuan Wang,Yue Li
Integrating β-CD-AgNPs and AuNSs arrays enables rapid, quantitative SERS sensing of antibiotic residues. • The system detects AMP, CIP, ENR, NFX individually and in mixtures with high sensitivity. • The combined substrate enabled accurate, applicable antibiotic detection in real waters. β-Cyclodextrin-functionalized Ag nanoparticles (β-CD-AgNPs) were synthesized via a one-step method and integrated with ordered Au nanoshells (AuNSs) arrays to construct a highly sensitive surface-enhanced Raman scattering (SERS) sensor for antibiotic detection. The specific dimensions of the β-CD-AgNPs enable selective binding, drawing antibiotic molecules into close proximity with the AgNPs surface. This proximity generates plasmonic hot spots, significantly amplifying the Raman signals. In this design, the β-CD-AgNPs serve a dual role as both the primary SERS substrate and an internal standard. A strong linear relationship was established between the concentration of antibiotics and the intensity ratio of the characteristic antibiotic peak to the β-CD-AgNPs peak. Based on this principle, we achieved sensitive detection of both individual antibiotics and their mixtures, and validated the method through spike-and-recovery experiments in environmental water samples. The calibration plots were established by linearly fitting the intensity ratio (antibiotic characteristic peak/internal standard peak) against the concentration of Ampicillin (AMP), Ciprofloxacin (CIP), Enrofloxacin (ENR), and Norfloxacin (NFX) solutions, all exhibiting excellent linearity (R 2 > 0.99), as well as for binary mixtures of CIP and AMP, with R 2 values of 0.9942 and 0.9953, respectively. The limits of detection (LODs) for these antibiotics ranged from 0.0827 to 0.3365 μmol·L −1 , and the limits of quantification (LOQs) ranged from 0.27 to 1.11 μmol·L −1 . The linear working ranges were 0.61–5.00, 0.55–12.00, 0.48–12.00, and 1.11–12.00 μmol·L −1 for AMP, CIP, ENR, and NFX, respectively. In environmental water samples, apparent recovery rates of individual antibiotics ranged from 98.84% (±0.03%) to 100.02% (±0.01%), with relative standard deviations (RSDs) between 1.32% and 4.92%. For CIP and AMP mixtures in similar samples, recoveries ranged from 98.53% (±0.01%) to 111.29% (±0.04%), with RSDs between 1.15% and 5.71%. These results demonstrate that the proposed SERS sensor enables efficient and accurate antibiotic detection, offering a viable approach for the rapid and highly sensitive monitoring of antibiotic contaminants in the environment. Download: Download high-res image (188KB) Download: Download full-size image
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